Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum # 1 – April 22, 2016
SECTION 01 11 00 SUMMARY OF WORK
PART 1 GENERAL
1.01 SUMMARY
A. Contract Documents
B. Contract Description
C. Measurement and Payment
D. Scope of Work
E. Contract Limits
F. Site Access
G. Hours of Work
H. Not Used
I. Not Used
J. Interfaces with Other Agencies and Contractors
K. Permits
L. Temporary Storage of Materials and Laydown Area
1.02 CONTRACT DOCUMENTS
A. The Work shall be performed and completed in accordance with the following documents:
1. The General Conditions for Construction Contracts and the Supplementary Conditions; the Contract Specifications which invoke, modify, and augment the Standard Specifications; and the various forms and exhibits; all contained in the Contract Book.
2. The AREMA Manual for Railway Engineering, 2015.
3. The Caltrans Standard Specifications, current edition.
4. The Contract Drawings and, if applicable, Reference Drawings, contained in the Contract Book or bound separately.
1.03 CONTRACT DESCRIPTION
A. Construct a precast concrete pedestrian underpass tunnel, around 80 feet long, under existing rail lines. Construct a cast-in-place concrete ramp/stair structure, around 275 feet long and up to 36 feet wide from the tunnel to grade at Brokaw Road. Construct associated drainage, electrical, lighting, station communications, civil and architectural elements. Installation of tunnel segments will be completed during a four-day weekend track closure.
1.04 MEASUREMENT AND PAYMENT
A. Separate measurement and payment will not be made for Work required under this Section. All costs in connection there with will be considered incidental to the item of work to which they pertain.
1.05 SCOPE OF WORK
A. Prior to track closures:
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1. Supply 14 precast concrete tunnel segments.
2. Dewater tunnel area.
B. During four-day weekend track closure:
1. Remove and reinstall portion of track by others.
2. Remove existing ballast and subballast. Supply and install new subballast under the supervision of the Railroad. Supply and installation of new ballast is by others.
3. Excavate, haul and dispose of all spoils from excavation. Provide temporary excavation support and dewatering as required. Make provisions for and dispose of any contaminated spoils.
4. Furnish and place aggregate base.
5. Install tunnel segments.
6. Furnish and install waterproofing.
7. Furnish and place backfill.
8. Disconnect, reconnect and test of rail signals for track closure will be by others.
9. Construct conduit bank adjacent to tunnel.
10. Install conduits to existing pull-boxes in the platform using jack and bore method.
C. After track closures:
1. Remove existing bulkhead wall and install concrete closure pour at connection of tunnel to existing below-grade ramp structure.
2. Excavate, haul and dispose of all spoils from excavation for ramp structure. Provide temporary excavation support and dewatering as required. Make provisions for and dispose of any contaminated spoils.
3. Furnish and place aggregate base.
4. Construct cast-in-place U-wall ramp structure.
5. Furnish and install waterproofing.
6. Furnish and place backfill.
7. Construct curved cast-in-place concrete pony walls inside ramp structure.
8. Construct cast-in-place concrete topping slab at ramp and tunnel.
9. Construct cast-in-place concrete walls with formlined surface inside tunnel.
10. Install electrical service. Transformer to be supplied and installed by others. Provide equipment and operators to assist operations by others.
11. Furnish and install security cameras and integrate into existing security system.
12. Furnish and install lighting and power receptacles inside tunnel and in ramp structure.
13. Furnish and install public address speakers and ambient noise microphone and integrate into existing PA system.
14. Furnish and install handrails and guardrails at ramps.
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15. Construct trench drains in underpass, area drains and sump pump within ramp structure. Connect drainage system with existing storm drain.
16. Furnish and install chain-link fencing and fabricated picket fencing.
17. Construct gate and driveway for UPRR maintenance access.
18. Furnish and install signage.
19. Construct new sidewalk.
20. Protect in place existing fiber optic duct bank and vault and other existing utilities.
1.06 CONTRACT LIMITS
A. Contract limits are described in the Contract Drawings.
1.07 SITE ACCESS
A. The Contractor’s access to the Job site shall be coordinated with the VTA or the VTA’s representative. The VTA’s presence shall not relieve the Contractor of responsibility for performing the Work.
B. Access to VTA facilities will only be permitted provided the Contractor has received approval of the work schedule. In addition, the Contractor shall give the VTA at least two (2) weeks advance notice in writing prior to starting work at the Jobsite.
C. Work shall be scheduled and performed only in accordance with a VTA approved Site Specific Work Plan (SSWP) as indicated in Contract Specifications 01 35 14, Work Planning specified herein.
1. VTA reserves the right to change the Work sequence described in the SSWP. The change of the Work sequence shall not impact the construction schedule and the VTA shall not be liable for any additional cost.
2. Operating and physical data of all construction equipment shall be included in the SSWP for VTA review and approval.
D. Any power connections and power up tests shall be performed during non-revenue hours and with the permission from the VTA.
E. For track access, see Section 01 04 0 , PCJPB Work Hours and Track Access.
1.08 HOURS OF WORK
A. As specified in Section 01 04 0 , PCJPB Work Hours and Track Access.
1.09 NOT USED
1.10 NOT USED
1.11 INTERFACES WITH OTHER AGENCIES AND CONTRACTORS
A. VTA has endeavored to identify agencies having jurisdiction over the Work and owning facilities in the vicinity of the Work. There may be, and very likely are, additional agencies having jurisdiction other than those on this list, and Contractor shall be bound by requirements of other agencies having jurisdiction over the Work.
B. The identified agencies and owners include:
1. Peninsula Corridor Joint Powers Board (JPB)
2. Ericsson Services for Sprint-Nextel Corp
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3. Silicon Valley Power
4. Cool Box Portable Storage
5. Union Pacific Railroad (UPRR)
6. Union Sanitary District (USD)
7. City of Santa Clara
8. Pacific Gas and Electric
9. AT&T
10. MCI/Verizon
11. Comcast
1.12 PERMITS
A. General
1. Attention is directed to GC-5, Permits, Licenses, Fees and Notices.
2. Prepare permit applications and obtain permits not provided by the VTA but required by regulating agencies to perform the Work. Work shall not commence in areas requiring permits prior to issuing of permits from the authorities having jurisdiction. In obtaining permits the Contractor shall:
a. Verify the permit requirements conform to the Contract Documents.
b. Coordinate with regulating agencies to obtain the required permits.
c. Coordinate with the VTA when obtaining permits.
d. Comply with permit requirements.
e. Assume responsibility for violations of permit requirements.
B. Permits Obtained By VTA
1. The VTA has obtained the following permits; it will not be the Contractor’s responsibility to obtain them. The VTA will obtain extensions to permit expiration dates as needed. Comply with the requirements of the permits.
a. Encroachment Permit from the City of Santa Clara..
C. Approvals Obtained by VTA
1. The VTA has obtained the following approvals:
a. Approval from Ericsson Services for Sprint-Nextel Corp to permit work adjacent to fiber optic lines. Fiber optic lines shall be protected during all construction activities in the vicinity of the lines.
D. Permits to be Obtained by Contractor
1. The VTA has identified the following permits as required for performance of the Work, but the permits have not been obtained by the VTA. This list is not intended as a comprehensive list and is provided as a convenience to the Contractor. Obtain these and other permits or approvals as necessary to comply with regulatory agency requirements.
a. Submit a Notice of Intent to the Regional Water Quality Control Board and obtain coverage
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under a National Pollutant Discharge Elimination System (NPDES) Permit for storm water discharges associated with construction activities required by this contract. Refer to Section 01 57 00, Temporary Controls, for Storm Water Pollution Prevention Plan requirements.
b. Permit to dispose of treated water resulting from dewatering at Santa Clara Station into the City of Santa Clara sewer system.
1.13 TEMPORARY STORAGE OF MATERIALS AND LAY DOWN AREA (WHEN APPLICABLE)
A. The Contractor shall be responsible for temporary storage of materials/equipment at the Work Sites and shall assume all risk or losses of materials/equipment and the safety/liability associated with the storage of the materials/equipment.
B. The Contractor may submit a request in writing for material storage on VTA property. Approval of such request is not guaranteed.
PART 2 PRODUCTS - Not Used
PART 3 EXECUTION - Not Used
END OF SECTION
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This Page Not Used
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SECTION 01 33 00 SUBMITTAL PROCEDURES
PART 1 GENERAL
1.01 SECTION INCLUDES
A. List of material sources.
B. Submittal requirements.
1.02 RELATED SECTIONS
A. Project progress schedules and status reports are specified in SC-23 –Progress Schedules.
B. General requirements and procedures for preparing and submitting Shop Drawings, product data, and samples are specified in Section 01 33 23 - Shop Drawings, Product Data, and Samples.
C. Submittals related to the Contractor's quality program are specified in Section 01 45 00 – Quality Control.
D. Submittals required to complete the Contract closeout are specified in Section 01 77 00 - Closeout Procedures.
E. Preparation and submission of project record documents are specified in Section 01 78 39 - Project Record Documents.
F. Site Specific Work Plans are specified in Sections 01 011 PCJPB Work Planning and 01 35 14 Work Planning.
G. Refer to SC-51 Technical Submittal List.
1.03 MEASUREMENT AND PAYMENT
A. Separate measurement or payment will not be made for work required under this Section. All costs in connection with the work specified herein will be considered to be included with the related item of work in the Bid Schedule of the Bid Form, or incidental to the Work.
1.04 LIST OF MATERIALS SOURCES
A. The Contractor shall submit to the VTA a list of the Contractor’s sources of materials. The list shall be submitted insufficient time to permit proper inspections and testing of materials to be furnished from such listed sources in advance of their use.
1.05 SUBMITTAL REQUIREMENTS
A. Schedule of Submittals: Within ten calendar days after the effective date of Notice to Proceed, the Contractor shall submit a completed submittal schedule and list of products for all items requiring the VTA’s review and approval, as follows:
1. Submittals, including description of the item and name of manufacturer, trade name and model number.
2. Specification reference.
3. Intended submission/resubmission date(s).
4. Order release date.
5. Lead time to delivery/anticipated delivery date(s).
6. Highlight any items that require expedited review to meet the project schedule.
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These schedules shall be presented in a form acceptable to the VTA in both electronic and hard copy versions and shall be updated and sent to the VTA on a monthly basis. Identify all submittals that are required by the Contract Documents and determine the date on which each submittal will be submitted in conformance with the schedules specified in SC-23 - Progress Schedules.
B. Professional Seal Required: Submittals involving engineering design services, when required by the Contract Documents or by governing codes and regulations, such as shoring and underpinning, excavation support structures, falsework for concrete, fire protection system design, and load and design calculations, shall be sealed and signed in blue ink by a professional engineer, currently registered in the State of California, for the discipline involved.
C. Review Period:
1. Prepare submittals sufficiently in advance so that approval may be given before commencement of related work.
2. Unless specified otherwise in Section 01 011 PCJPB Work Planning, Section 01 35 14 Work Planning and Section 13 35 15 Union Pacific railroad Interface, allow 30 calendar days after receipt by the VTA for review of each submittal, including resubmittals.
3. The Contractor shall be responsible for determining whether or not certain governmental entities and utility districts require longer review periods. When longer review periods are required, the Contractor shall schedule the Work accordingly, so that the Work and project progress schedules are not adversely impacted.
D. Submittal Delivery: Ship submittals prepaid or deliver by hand directly to the VTA.
E. Transmittal Form: Accompany submittals with a VTA-furnished transmittal form induplicate containing the following information:
1. The Contractor's name, address, and telephone number;
2. Submittal number and date;
3. Contract title and number;
4. Supplier's, manufacturer's, or Subcontractor's name, address, and telephone number; and
5. Subject identification including Contract Drawing and Specification reference.
F. Changes in Approved Submittals: Changes in approved submittals will not be allowed unless those approved submittals with changes have been resubmitted and approved, in the same manner as the original submittal.
G. Supplemental Submittals: Supplemental submittals initiated by the Contractor for consideration of corrective procedures shall contain sufficient data for review. Make supplemental submittals in the same manner as initial submittals.
1.06 CONTRACTOR’S RESPONSIBILITIES
A. Contractor's Review and Approval:
1. Each submittal shall be reviewed, stamped, and signed as reviewed and approved by the Contractor prior to submission. The Contractor’s approval shall indicate review and approval with respect to the following responsibilities:
2. The Contractor shall be responsible for:
a. The correctness of the drawings, for shop fits and field connections, and for the results obtained by the use of such drawings.
b. Verification of catalog numbers, and similar data.
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c. Determination and verification of field measurements and field construction criteria.
d. Checking and coordinating information in the submittal with requirements of the Work and of the Contract Documents.
e. Determination of accuracy and completeness of dimensions and quantities.
f. Confirmation and coordination of dimensions and field conditions at the site.
g. Safety precautions.
h. Errors or omissions on submittals.
i. Coordination and performance of work of all trades.
j. Identification of deviation(s) from Contract requirements.
3. The Contractor shall coordinate each submittal with the requirements of the Work, placing particular emphasis upon assuring that each submittal of one trade is compatible with other submittals of related work. Ensure submittal is complete with all relevant data required for review.
4. The Contractor shall stamp, initial or sign the submittal, certifying:
a. Dimensional compatibility of the product with the space in which it is intended to be used.
b. Review of submittals for compliance with Contract requirements.
5. Do not start work for that requires approval by the VTA until submittals have been returned to the Contractor with official indication that approval has been granted by the VTA.
6. If the submittal is designated to be sent to the VTA for information, approval by the designated approval authority shall take place before submission to the VTA.
7. Approval of drawings and associated calculations by the VTA shall not relieve the Contractor from the responsibility for errors or omissions in the drawings and associated calculations, or from deviations from the Contract Documents, unless submittals containing such deviations were submitted to the VTA and the deviations were specifically called to the attention of the VTA in the letter of transmittal and within the submittal, and approved specifically by the VTA as a Contract change.
8. Approval of the Contractor’s submittal by the VTA shall not relieve the Contractor of any responsibility, including responsibility for accuracy and agreement of dimensions and details.
B. Submittal Quantities: Refer to Contract Specifications Section 013323 - Shop Drawings, Product Data, and Samples, for submittal quantities.
C. Review by the VTA: One marked up reproducible set of drawings, one copy of product data, and one sample will be returned to the Contractor.
D. Distribution of Submittals after Review: Distribute prints or copies of approved submittals, bearing the VTA's or designated approval authority's stamp and signature, to the Contractor's field office and the VTA's field office; to affected and concerned Subcontractors, Suppliers, and fabricators; and to affected and concerned members of the Contractor's work force.
1.07 VTA'S REVIEW
A. Submittals will be reviewed for conformance with requirements of the Contract Documents. Review of a separate item will not constitute review of an assembly in which the item functions. Nether review nor approval shall relieve the Contractor from Contractor’s responsibility for accuracy of submittals, for conformity of submittals to requirements of Contract Documents, for compatibility of described product with other provided products and the rest of the system, or for prosecution and completion of the Contract
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in accordance with the Contract Documents.
B. Submittals shall be understood as being made for approval, unless otherwise specified, for example, as being made for information, record, or review. The VTA will indicate its reviews of submittals and the action taken (approvals and non-approvals) by means of its review stamp. The review stamp will be affixed by the VTA, the action block will be marked, and the stamp will be signed in blue ink and dated.
1. Approval of the submittal by the VTA does not relieve the responsibilities of the professional engineer who originally signed and sealed the submittal or the responsibilities of the Contractor to meet the Contract requirements.
C. The review-stamp action-block marks will have the following meanings:
1. The mark APPROVED is an acceptance, and means that the submittal appears to conform to the respective requirements of the Contract Documents; that fabrication, assembly, manufacture, installation, application, and erection of the illustrated and described product may proceed; and that the submittal need not be resubmitted.
2. The mark APPROVED AS NOTED – RESUBMISSION NOT REQUIRED is an acceptance, and means that the submittal appears to conform to the respective requirements of the Contract Documents upon incorporation of the reviewer's corrections, and that fabrication, assembly, manufacture, installation, application, and erection of the illustrated and described product may proceed. Submittals so marked need not be resubmitted unless the Contractor challenges the reviewer's exception within 7 calendar days. All noted changes will be reflected in the as-built drawing by the Contractor.
3. The mark LIMITED APPROVAL–RESUBMISSION REQUIRED is an approval except for the work impacted by the notes and comments, and means that the submittals requires corrections to conform to the respective requirements of the Contract Documents. Fabrication, assembly, manufacture, installation, application, and erection of the illustrated and described product may proceed at the Contract’s risk only for the elements of work not impacted by and changes required to incorporate the reviewer’s corrections. The noted work cannot proceed until verification by the VTA that the review’s correction have been properly incorporated in the submittal.
4. The mark NOT APPROVED-RESUBMISSION REQUIRED is a disapproval, and means that the submittal requires corrections to conform to the respective requirements of the Contract Documents, and that fabrication, assembly, manufacture, installation, application, and erection of the illustrated and described product may not proceed until incorporation of the reviewer's corrections and verification by the VTA that the reviewer's corrections have been properly incorporated in the submittal.
5. The mark REJECTED–RESUBMISSION REQUIRED is a disapproval, and means that the submittal is deficient to the degree that the reviewer cannot correct the submittal with a reasonable degree of effort, has not made a thorough review of the submittal, and that the submittal needs revision and is to be corrected and resubmitted.
6. The mark NOT REVIEWED is acknowledgement of receipt and means that the submittal is for information and record purposes only.
D. Review stamps or other approval methods of the various designated approval authorities may not be the same as those of the VTA. The Contractor shall work with the various designated approval authorities and shall obtain approvals in the clearest and most straight forward manner possible.
END OF SECTION
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SECTION 01 35 14 WORK PLANNING
PART 1 GENERAL
1.01 SUMMARY
A. Section includes general requirements for planning and performing the Work both within and outside of the railroad operating environment.
1.02 RELATED SECTIONS
A. Section 01 040, PCJPC/Caltrain Work Hours and Track Access.
B. Section 01 35 15, Union Pacific Railroad Interface
1.02 GENERAL
A. Contractor shall not endanger the operations of the VTA and the Operating Railroad of Record (ORR), including its right-of-way, tracks, embankments, structures, rolling stock, signal systems, and other equipment and appurtenances. If any of the foregoing is endangered in any manner by or as a result of the performance of the Work, the Contractor shall take immediate action to restore operations to a safe condition. Should the Contractor fail to take immediate action, the VTA may, at the Contractor's expense, take whatever steps it determines necessary to restore operations to a safe condition.
B. Contractor shall familiarize itself with VTA's property and right-of-way, adjacent properties; the schedules of trains operating over the VTA’s and other railroads’ right-of-way in the vicinity of said Work; and private or public operations on adjoining properties. The Work shall be performed in such a manner and at such times so as to avoid any delay or interference with the train service of the railroad operations unless prior written approval of the VTA has been obtained. Reference is made to GC-38, Public Convenience and Safety.
C. Roadway Worker Protection (RWP) will be required whenever the Contractor performs a construction task, activity, or operation within the Operating Envelope or with potential to affect the Operating System including conducting an operation which fouls, or has potential to foul track, or impacts, or has potential to impact, any operating system component. Refer to Section 01 35 15, Union Pacific Railroad Interface for VTA furnished RWP personnel.
D. Contractor shall obtain VTA’s approval in accordance with the procedures specified in this section for work requiring track outages or Fouling of Track.
E. Contractor shall complete all necessary preparatory work and have all materials at worksite prior to Work Window.
F. The Contractor shall work expeditiously, with an adequate work force, during the Work Window, to complete work and allow service to be fully restored as scheduled in accordance with the approved Site Specific Work Plan and Request to Work.
1.03 MEASUREMENT AND PAYMENT
A. Separate measurement or payment will not be made for work required under this Section. Full compensation for conforming to the requirements of this Section involving Work Planning shall be considered as included in the contract prices paid for the various contract items of work involved and no additional compensation will be allowed therefore.
1.04 DEFINITIONS
A. Operating System: All components and facilities which together constitute the system for operating the railroad or are essential for normal operation of the railroad. The Operating System includes track and track structure; signal and communication structures, houses, and cables; bridges, tunnels, drainage system components, grade crossings, station platforms, building structures housing communication and
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maintenance facilities.
B. Operating Envelope: Also On-Track Safety Envelope. The space bounded by two imaginary lines, measured 15 feet horizontally from the field side (outside) of each rail of any track on which trains or on-track equipment operate or may potentially operate. The Operating Envelope also includes the width and length of any active station platform. The boundaries of the Operating Envelope extend vertically up and down infinitely.
C. Work Window: A period of time with a specific beginning and ending time and duration approved by the VTA and ORR during which access to the operating envelope or operating system is provided for construction purposes.
D. Minor Impact Work Window: A work window for performing work within the operating envelope, or which has potential to foul tracks, but will not disturb the track structure or the proper operation of the signal system or protective devices, and such that work crews and equipment are able to clear tracks promptly to allow trains to pass. All work within 25 feet of the centerline of any track, or which requires any equipment, devices and materials to be located at a distance from any track such that any apparatus or part of any piece of equipment, device or material, such as the boom of a crane or a dragline, could under any circumstances reach closer than 25 feet to the centerline of any track, shall be considered to have the potential to foul tracks.
E. Single Track Outage Work Window: A work window for performing work within the operating envelope of a track which will disturb the track structure or affect the proper operation of the signal system or is such that work crew and equipment are not able to clear tracks promptly.
F. Multiple Track Outage Work Window: A work window for performing work within the operating envelope of multiple tracks which will disturb the track structure or affect the proper operation of the signal system or is such that work crew and equipment are not able to clear tracks promptly.
G. Signal System Work Window: A work window for performing work outside the operating envelope but which will, or has potential to, disturb the proper operation of the signal system or protective devices.
H. ORR Work Window: A work window specifically designated for the Operating Railroad of Record to perform work within the operating envelope or to the operating system.
I. Fouling of Track: The placement of an individual or an item of equipment in such proximity to a track that the individual or equipment could be struck by a moving train or by on-track equipment, or is within the operating envelope (or on-track safety envelope).
J. Track Bulletins: Track Bulletins provided by the Operating Railroad of Record (ORR) are defined as follows:
1. Form A: Train slow order, as determined by the ORR.
2. Form B: Working Limits, as determined by the ORR.
3. Form C: Track out of service provided by ORR.
4. Form D: Train allowed to run against the normal current of traffic.
1.05 DEFINITIONS – WORK PLANNING DOCUMENTS
A. Site Specific Work Plan (SSWP): An integrated plan and schedule prepared and submitted by the Contractor and approved by the VTA, which describes in detail the manner in which work will be accomplished within the Work Windows, including interrelation of work activities, work schedule, and responsibility of parties.
B. Request to Work: A document submitted by the Contractor to request permission to work on a specific portion of the Work at a specific time and location.
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C. Approval to Work: A document issued by the VTA which authorizes the Contractor to perform work under stated conditions in response to an acceptable Request to Work.
1.06 SUBMITTALS
A. Site Specific Work Plan: Submit SSWP for VTA’s approval at least six (6) weeks prior to the first day of planned work for the specific task, activity or operation or as otherwise required in this section. Site Specific Work Plans that include temporary shutdown of train operations shall be submitted at least twelve (12) weeks prior to the week in which the work is requested to be performed.
B. Request to Work: Submit Request to Work to the VTA no later than the Monday three (3) weeks prior to the week in which the work is requested to be performed. Requests to Work that include temporary shutdown of train operations shall be submitted no later than the Monday six (6) weeks prior to the week in which the work is requested to be performed. The work week for purposes of the Request to Work is defined as 4 AM Monday to 4 AM the following Monday.
1.07 SITE SPECIFIC WORK PLAN (SSWP)
A. Prepare a detailed Site Specific Work Plan for every construction task, activity, or operation of the Work to be performed within a Work Window. Contractor’s SSWP shall demonstrate Contractor’s understanding of the contract requirements pertaining to execution of construction tasks, activities, or operations and their impacts on railroad operations, and represents Contractor’s intent and plan for performing work in such manner as to meet all contractual requirements, minimize impacts, and prevent delays to railroad operations. Include text, diagrams, or drawings as necessary to provide the required information.
B. Format and Content: The SSWP shall include the following information:
1. Summary: Including:
a. Work Description: Identify the primary work task, activity or operation to be performed. If applicable, identify and differentiate scope of work to be performed by Contractor’s and other’s forces.
b. Location: Describe the specific location and limits of work.
c. Duration: Indicate which Work Window(s) apply.
d. Track Impact: Indicate tracks effected by the work and proposed times and dates of impact.
e. Anticipated Impacts to Operations: Describe impacts to Caltrain passengers and the general public, including changes to pedestrian or vehicular traffic patterns, boarding locations, or access points. Describe impacts to train operations, including need for single or multiple track outages, possible train delays, and possible speed restrictions during and after work.
f. Construction Method: Describe the construction method, labor, materials, and equipment to be used. Include maximum dimensions for width, depth, height and travel path of all equipment.
g. Hazard and Risk Description: Identify and describe foreseeable hazards and risks associated with the performance of the work and which could impact return of track to service. Hazards and risks include utilities and hazardous materials not previously identified.
h. Accident and Delay Prevention Methods: Describe controls and procedures that will be implemented to reduce or eliminate each foreseeable hazard and risk described above, including contingency plans for returning track to service in the event key elements of the plan fail to occur as planned.
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2. Detailed Work Breakdown: Including:
a. Step by step breakdown of all work activities to be performed within the Work Window.
b. List of all assumptions and tasks, availability of materials, equipment and labor, which must be completed or on hand prior to the commencement of the work.
c. Identify critical milestones which must be achieved prior to continuing with the next work activity.
d. Staffing requirements for all disciplines and shifts within the Work Window, including Subcontractors. Incorporate VTA furnished labor requirements.
e. Identify Contractor’s responsible person(s) in charge for the overall operation and individual tasks, including name, role, responsibility, and contact information for each person.
f. List of materials and equipment required for each work task, activity, or operation. For materials, include size and number of containers, bundles, etc as appropriate, handling equipment, staging areas and any special handling or storage requirements. For equipment, include specifications with size and weight and any special precautions to be used.
3. Detailed Schedule of Work Activities: Prepare a detailed critical path method schedule of all activities required to complete the work covered by the plan, including activities to be performed by Contractor’s or other’s forces. Schedule shall be developed in the same manner and format as other schedules submitted in accordance with Section SC-23, Progress Schedule.
a. Include duration of each activity with a planned duration of one half hour or greater.
b. Include time for inspections required to place the tracks and signal system back in service, if applicable.
C. The VTA will review the Site Specific Work Plan. Furnish additional information as requested by the VTA.
1.08 REQUEST TO WORK AND APPROVAL TO WORK
A. Obtain VTA’s approval of applicable Site Specific Work Plans prior to submittal of a Request to Work.
B. Prepare a Request to Work for every construction task, activity or operation and obtain an Approval to Work prior to performing any such construction task, activity or operation.
C. Request to Work shall include the following information:
1. Work elements to be constructed.
2. Copy of the approved SSWP for each work element.
3. Schedule of requested days and dates for each work element.
4. Requested Work Windows for each work element.
5. Requested Railroad representatives, inspectors, conductors, flagpersons or watchmen that are to be furnished by the Railroad or the VTA.
D. The VTA will review the Request to Work. If acceptable, the VTA will issue an Approval to Work including the conditions under which the work shall be performed.
E. If Approval to Work is not granted by Monday two (2) weeks prior to the week in which the work is planned to be performed, it shall be deemed not approved; submit a new Request for Work.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 14 Work Planning - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1.09 CANCELLATION OF WORK
A. The VTA or ORR may, at any time, withdraw its approval for a track outage.
B. If approval is withdrawn after the Contractor has begun work, the Contractor shall fully cooperate to vacate the area in a safe and rapid manner. The Contractor shall inform the VTA, as soon as possible (but within one hour) after requested to vacate the area(s), of the extent of the work that must be performed in order to vacate the area(s) and the estimated time required to perform such work.
C. If Contractor cancels work in a scheduled Work Window after receiving an Approval to Work with less than 24 hours notice, the Contractor will be assessed costs of VTA furnished labor and equipment as specified in Section 01 35 15, Union Pacific Railroad Interface.
D. If the VTA cancels a Work Window with less than 24 hours notice, the VTA will pay reasonable and documented costs for Contractor’s crew and equipment mobilization. The Contractor shall take measures to minimize its costs in case of such cancellation.
E. If the Contractor cancels work for a scheduled Work Window with at least 24 hours notice or the VTA cancels a Work Window with at least 24 hours notice, there will be considered to be no costs to either party.
1.10 QUALIFICATIONS
A. Personnel and their designated representatives required to be at each distinct work area to ensure track and signal are constructed in accordance with the Contract Documents, required to perform preliminary inspections prior to returning track to service, and required to be present during VTA and ORR inspections shall be qualified as required by FRA Part 213.7, Part 234, Part 236, and Section 01 35 15, Union Pacific Railroad Interface.
1.11 TRACK BACK IN SERVICE
A. At the end of each Work Window, all track will be returned to operation.
B. VTA will determine whether there has been a delay to train operations and the amount of delay and such determination will be final. Rail Service Interruption assessments will be made in accordance with SC-10.2.4 Caltrain Delay Damages, when any of the following occurs.
1. The Contractor’s construction operations exceed the approved Work Window time limits.
2. The Contractor’s construction operations results in a slow order (Form A) on any main line track, except as required by PCJPB standard requirements for temporary speed restrictions for track stabilization.
3. The Contractor’s construction operations working under an approved Minor Impact Work Window result in the stoppage of a scheduled train. In this case, the delay will be calculated from the time the train is stopped at the working limit until the train has completely passed through the working limits.
1.12 INSPECTION PRIOR TO PLACING SIGNAL SYSTEM BACK IN SERVICE
A. Not Used.
B. The VTA will provide a standard operating procedure to the Contractor outlining the coordination requirements for inspection prior to placing track and signal system back in service.
C. The VTA will furnish staff from the ORR to participate in the final inspection required to place track and signal facilities in service for PCJPB use at the end of Work Windows or when otherwise required.
D. Not Used. .
E. Schedule operations to allow the VTA and ORR a minimum of 30 minutes to perform the necessary inspections required in order to place the tracks and signal system back in service at the prescribed
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 14 Work Planning - 5 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
time.
1.13 ON-TRACK SAFETY AND RWP
A. The VTA will provide Roadway Worker Protection and RWP personnel as specified in Section 01 35 15, Union Pacific Railroad Interface. Do not proceed with work subject to RWP until the required RWP personnel are in position and have authorized start of work. Comply with instructions and directions of RWP personnel.
1. Upon warning of an approaching train, cease work activities, and place materials, equipment and tools in an idle position clear of the track structure. All personnel shall move clear of the track fouling envelope, where they shall remain until receiving a signal from RWP personnel that work may resume.
B. The VTA and the ORR will determine the specific type of RWP that will be provided for each work window. The maximum protection distance covered by one flagman is 300 feet in either direction when providing Train Approach Warning. Perform no work beyond this protection limit without additional flagmen. Provision of additional flagmen is subject to the approval of the VTA and possible labor charges to the Contractor in accordance with Section 01 35 15, Union Pacific Railroad Interface The VTA and ORR reserve the right to require additional RWP at any time and for any reason. In such cases, additional RWP personnel will be furnished by the VTA and not result in an assessment of a labor charge to the Contractor.
1.14 GRADE CROSSING CLOSURES
A. Existing grade crossings may be closed to vehicular and pedestrian traffic on a temporary basis to support construction as follows:
1. The grade crossing may be closed only during Work Windows or allowable work hours at the project site, subject to the approval of the local agency having jurisdiction over the grade crossing. Plan the Work such that when the grade crossing is opened, all lanes of the roadway are open and in a safe condition for vehicular and pedestrian traffic. All crossing warning devices must be fully functional prior to opening the crossing.
2. No warranty is made that closure of adjacent grade crossings will be approved or allowed, either by the VTA or the local agency having jurisdiction.
B. Attention is directed to Vehicular and Pedestrian Traffic Control of Caltrain Standards. The Contractor shall coordinate with and obtain approval of the traffic handling plan for the grade crossing closure from the VTA and the affected local agencies.
PART 2 PRODUCTS (Not Used)
PART 3 EXECUTION (Not Used)
END OF SECTION
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 14 Work Planning - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
SECTION 01 35 15 UNION PACIFIC RAILROAD INTERFACE
PART 1 GENERAL
1.01 DESCRIPTION
A. The term "Railroad" in this Section shall be understood to mean the Union Pacific Railroad (UPRR) Company.
B. It is expected that the Railroad will cooperate with the Contractor to the end that the work may be handled in an efficient manner. However, except for the additional compensation provided hereinafter for delays in completion of specific units of work to be performed by the Railroad, and except as provided in Public Contracts Code Section 7102, the Contractor shall have no claim for damages, extension of time or extra compensation in the event the Contractor’s work is held up by any of the work to be performed by the Railroad.
C. The Contractor must understand the Contractor's right to enter the Railroad’s property is subject to the absolute right of Railroad to cause the Contractor's work on Railroad's property to cease if, in the opinion of Railroad, Contractor's activities create a hazard to Railroad's property, employees and/or operations.
D. The contractor shall obtain a Right of Entry Permit from UPRR prior to any work activity within the UPRR operating envelope. The Contractor will be required to include Certificate of Railroad Protective Liability Insurance and submit to the Railroad together with the signed Railroad Protective Insurance Form (see Appendix K).
E. All employees and representatives of the Contractor and its subcontractors that are expected to be physically within the right-of-way of the Railroad shall be safety trained and certified including Roadway Worker Protection (RWP). Additionally, any employees or representatives of the Contractor who perform operations that have the potential to foul the tracks shall be safety trained and certified. Such training and certification will be coordinated through VTA.
F. Number of trains per day:
Freight = 4 to 6, excluding yard switching operations
G. UPRR will be responsible for track removal and reinstallation during the four day shutdown. UPRR will furnish and install new ballast for the tracks. The Contractor is responsible for providing a large crane and one track hoe/ excavator with operator to support track removal and restoration work.
H. For the four day thanksgiving week shutdown, the contractor shall provide an hour by hour schedule of activities that includes UPRR’s activities for rail removal and installation of ballast and tracks.
I. Refer to Appendix K for UPRR Right of Entry Permit, Insurance, Safety and Technical requirements.
1.02 MEASUREMENT AND PAYMENT
A. The contractor shall bid an allowance of $55,000 for UPRR support during the four day shutdown. This allowance will be paid by force account for the field labor, equipment and material costs for coordinating with UPRR for the removal and reinstallation of track (by UPRR).
B. Other costs related to the interface with UPRR shall be considered to be included in contract prices paid for various contract items of work involved and no additional compensation will be allowed therefor
1.03 RAILROAD REQUIREMENTS
A. The Contractor shall cooperate with the Railroad where work is over or under the tracks, or within the limits of Railroad property, in order to expedite the work and to avoid interference with the operation of Railroad equipment.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
B. The Contractor shall comply with the rules and regulations of the Railroad or the instructions of its representatives in relation to the proper manner of protecting the tracks and property of the Railroad and the traffic moving on such tracks, as well as the wires, signals and other property of the Railroad, its tenants or licensees, at and in the vicinity of the work during the period of construction.
C. The Contractor shall perform its work in such a manner and at such times as shall not endanger or interfere with the safe operation of the tracks and property of the Railroad and traffic moving on such tracks, as well as wires, signals and other property of the Railroad, its tenants or licensees, at or in the vicinity of the work.
D. The Contractor shall take protective measures necessary to keep Railroad facilities, including track ballast, free of sand or debris resulting from the Contractor’s operations. Any damage to railroad facilities resulting from Contractor's operations will be repaired or replaced by the Railroad and the cost of such repairs or replacement shall be deducted from the Contractor's progress and final pay estimates.
E. The Contractor shall contact the Railroad's "Call Before You Dig" at least 48 hours prior to commencing work, at 1-800-336-9193 (a 24-hour number) to determine location of fiber optics. If a telecommunications system is buried anywhere on or near railroad property, the Contractor will coordinate with the Railroad and the Telecommunication Company(ies) to arrange for relocation or other protection of the system prior to beginning any work on or near Railroad property. One fiber optic duct bank and vault is known to be present within the footprint of the ramp structure and is to be protected in place as shown on the Contract Drawings.
F. The Contractor shall not pile or store any materials nor park any equipment closer than 25 feet 0 inches to the centerline of the nearest track, or on railroad property unless specifically requested and included in the Site Specific Work Plan, and shall not be undertaken until an Approval to Work has been issued by the VTA and the Railroad..
G. The Contractor shall also abide by the following temporary clearances during the course of construction:
12 feet 0 inches horizontally from centerline of track
21 feet 0 inches vertically above top of rail
1. The temporary vertical construction clearance provided above will not be permitted unless specifically requested and included in the Site Specific Work Plan, and shall not be undertaken until an Approval to Work has been issued by the VTA and the Railroad.
2. Walkways with railing shall be constructed by Contractor over open excavation areas when in close proximity of tracks, and railings shall not be closer than 8 feet 6 inches horizontally from centerline of the nearest track, if tangent, or 9 feet 6 inches if curved.
3. Any request to infringe on the above temporary construction clearances due to the Contractor's operations shall be included in the Site Specific Work Plan, and shall not be undertaken until an Approval to Work has been issued by the VTA and the Railroad. No extension of time or extra compensation will be allowed in the event the Contractor's work is delayed pending Railroad approval.
4. When the temporary vertical clearance is less than 22 feet 6 inches above the top of the rail, the Railroad shall have the option of installing other protective devices that the Railroad deems necessary for protection of Railroad trainmen or rail traffic.
H. Four sets of plans, in 11 inches x 17 inches format, and two sets of calculations showing details of construction affecting the Railroad's tracks and property not included in the contract plans, including but not limited to shoring and falsework, shall be submitted to the VTA for review prior to submittal to the Railroad for final approval. Shoring and falsework design shall be in accordance with the "Guidelines for Design and Construction of Grade Separation Underpass Structures", latest edition, issued by the Railroad's Office of Chief Engineer and Caltrans "Trenching and Shoring Falsework
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
Manual," latest edition, issued by the Office of Structure Construction. Shoring and falsework plans and calculations shall be prepared and signed by a registered professional engineer. This work shall not be undertaken until such time as the Railroad has given such approval; review by Railroad may take up to 12 weeks after receipt of all necessary information.
I. The Contractor shall obtain an Approval to Work from the VTA for the installation of temporary work less than 25 feet from the centerline of any track. See Section 01 35 14 – Work Planning for the requirements for Site Specific Work Plan and Request to Work Submittals.
J. No blasting by the Contractor will be permitted.
K. The Contractor shall, upon completion of the work covered by this contract to be performed by the Contractor upon the premises or over or beneath the tracks of the Railroad, promptly remove from the premises of the Railroad all of the Contractor's tools, implements and other materials, whether brought upon said premises by said Contractor or any subcontractor, employee or agent of Contractor or of any subcontractor, and cause said premises to be left in a clean and presentable condition.
1.04 SAFETY
A. The Contractor shall be responsible for providing Roadway Worker Protection (RWP) training to all site personnel, including subcontractors, suppliers, and visitors. The RWP training shall be compatible with UPRR’s RWP training. The proposed course outline shall be submitted to the VTA for approval in such a timeframe so as to allow the Contractor to assume this responsibility within one (1) month of Notice to Proceed (NTP). The Contractor shall provide hard hat stickers to each worker trained under its RWP program. The stickers shall be numbered and shall identify the training expiration date. Each worker must have this sticker displayed on his/her hard hat when entering the worksite or the UPRR right of way. The Contractor shall provide a copy of the latest and up to date RWP training records to the VTA after each training session under the provisions of SC-6, Contract Data Requirements, and GC-43, Submittal of Shop Drawings, Product Data and Samples. The RWP training records shall be a summary log form and at a minimum list each employee’s name, his or her sticker number, the latest trained date, and the level or type of training received. The records should be listed alphabetically by employee’s last name.
B. The Contractor shall keep the job site free from safety and health hazards and ensure that its employees are competent and adequately trained in all safety and health aspects of the job. The Contractor shall promptly notify VTA of any U.S. Occupational Safety and Health Administration reportable injuries to any person that may arise during the work performed on the job site. The Contractor shall be responsible that its employees, while on the job site or any other property of the Railroad, shall not use, be under the influence of or have in their possession any alcoholic beverage or illegally obtained drug, narcotic or other substance.
C. The employees of the Contractor shall be suitably dressed to perform their duties safely and in a manner that will not interfere with their vision, hearing or free use of their hands or feet. Only waist length shirts with sleeves and trousers that cover the entire leg are to be worn. If flare-legged trousers are worn, the trouser bottoms shall be tied to prevent catching. The employees shall wear sturdy and protective footwear. Employees shall not wear boots (other than work boots), sandals, canvas-type shoes or other shoes that have thin soles or heels that are more than two inches high. In addition, the Contractor shall require its employees to wear personal protective equipment as specified by UPRR's rules, regulations or Railroad officials overlooking the work at the job site. In particular, the protective equipment to be worn shall be:
1. Protective head gear that meets the latest provisions of ANSI Z89.1, "Personnel Protection - Protective Headwear for Industrial Workers - Requirements." All hard hats shall be affixed with the Contractor's or subcontractor's company logo or name and shall be affixed with safety training certificates.
2. Eye protection that meets the latest provisions of ANSI Z87.1, "Practice for Occupational and Educational Eye and Face Protection." Additional eye protection must be provided to meet specific job situations such as welding, grinding, burning, etc.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
3. Hearing protection that affords enough attenuation to give protection from noise levels that will be occurring on the job site.
D. All heavy equipment provided or leased by the Contractor shall be equipped with audible back-up warning devices.
E. If, in the opinion of the VTA or the Railroad's Representative, any of the Contractor's or any of its subcontractor's equipment is unsafe for use on the Railroad's right-of-way, the Contractor, at the request of the VTA or the Railroad's Representative, shall immediately remove such equipment from the Railroad's right-of-way.
1.05 WORK NEAR THE TRACK
A. Except as authorized by an Approval to Work from the VTA, the Contractor shall not work within 25 feet of the centerline of any track, and shall locate all equipment, devices and materials at a sufficient distance from any track to ensure that no apparatus or part of any piece of equipment, device or material, such as the boom of a crane or a dragline, could under any circumstances reach closer than 25 feet to the centerline of any track. When the Contractor is required to work within 25 feet of the centerline of any track, the VTA will provide Railroad or Railroad-approved flagpersons. The Contractor shall provide timely notification for requesting flagging support per SC-10.5 Item No. 19 requirements.
1.06 CROSSINGS
A. Except as authorized by an Approval to Work from the VTA, the Contractor shall not construct temporary crossings over any track at any location. Where temporary crossings are needed or desired, the Contractor shall make arrangements directly with the VTA. Temporary crossings required by the Contractor for his convenience shall be constructed and later removed at the Contractor's expense. If the Contractor must cross tracks with cleated or crawler type equipment, then the track shall be protected with a temporary surfacing approved by the VTA and the Railroad. The VTA will provide Railroad or Railroad-approved flagpersons at temporary crossings, The Contractor shall notify the VTA, as part of the Request to Work submittal, at least 20 calendar days in advance of the date the Contractor wishes to commence using a temporary crossing. The Contractor shall also notify the VTA at least 8 calendar days in advance of the date the Contractor will cease using a temporary crossing.
1.07 TEMPORARY SHUTDOWN OF TRAIN OPERATIONS
A. Railroad operations will only be suspended for a limited period as defined in SC-10.3..
1.08 TRACK AND BALLAST REMOVAL AND RESTORATION
A. The Railroad will install temporary bolted rail connections as required for the temporary track removal and will install permanent rail connections after track and ballast restoration. The Railroad will disconnect the temporary rail connections immediately prior to removing the track.
A. The Contractor shall deliver Subballast to the edge of the excavation where the material will be utilized, and deposited, placed and compacted as directed by the VTA or the Railroad. See Section 34 11 26 – Subballast and Ballast for additional requirements.
1.09 EQUIPMENT
A. The Contractor's equipment shall be in good operating condition. The VTA and the Railroad are not responsible for equipment failure. The VTA and the Railroad will not be responsible for the Contractor's equipment which is stolen or vandalized.
1.10 INSPECTION
A. A representative of the Railroad will, at all times, have access to the work on Railroad property, wherever it is in progress. Except for emergencies or other railroad safety concerns, orders from the Railroad Representative will be issued through the VTA.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
B. The VTA shall decide all questions that may arise as to the quality or acceptability of materials furnished and the work performed; and the Contractor shall make any adjustments necessary as directed by the VTA.
1.11 USE OF PREMISES
A. The Contractor shall confine construction equipment, the storage of materials and the operations of its workers to limits indicated by laws, ordinances, permits or directions of the VTA, and shall not unreasonably encumber the premises with its materials. The Contractor shall enforce the VTA's instructions regarding signs, advertisements, fire and smoking.
1.12 COORDINATION OF WORK
A. The work involves construction and operations on the Railroad's right-of-way, and the Contractor will be required to coordinate its activities with the activities of the Railroad as well as others not party to the Contract.
B. The safe operations of the Railroad's trains shall take precedence over all work, and nothing shall be done or suffered to be done by the Contractor that will endanger the Railroad's operations.
C. The Contractor shall comply with the Railroad's rules and regulations concerning protection of persons and property, and Contractor shall consult with the VTA concerning the Railroad's rules and regulations. Any questions arising about coordination of work between the Contractor and the Railroad or between Contractor and others shall be taken up with the VTA and a method of coordination agreed upon before the work is commenced.
D. The method of work will be left to the discretion of Contractor but shall in all cases be subject to the approval of the VTA. Approval of the method of work shall not make the VTA, or the Railroad responsible or liable in case of accident.
1.13 PROTECTION OF RAILROAD FACILITIES
A. Upon advance notification of not less than 30 calendar days by the Contractor following the requirements in SC-10.5 Item No. 19, Railroad representatives, conductors, flagpersons or watchmen will be provided by the Railroad or the VTA to protect its facilities, property and movements of its trains or engines. The request must include the required duration in days/weeks and also identify the hours of the day the flagging is required such as 7AM to 3PM. This project must be completed without interruption to both freight and passenger service and the contractor must schedule all work to avoid impacting rail service. Any subsequent deviation from said schedule shall also require 15 calendar days advance notice from the first affected date. In general, the Railroad or VTA will furnish such personnel or other protective devices:
1. When any part of any equipment is standing or being operated within 25 feet, measured horizontally, from centerline of any track on which trains may operate, or when any erection or construction activities are in progress within such limits or have equipment that has the potential to foul no matter the distance from active tacks such as cranes, regardless of elevation above or below track.
2. For any excavation below elevation of track subgrade if, in the opinion of Railroad's representative or VTA, track or other Railroad facilities may be subject to settlement or movement.
3. During any clearing, grubbing, grading or blasting in proximity to Railroad which, in the opinion of the Railroad's Representative or VTA, may endanger Railroad facilities or operations.
4. During any of the Contractor's operations when, in the opinion of Railroad's representatives or VTA, Railroad facilities, including, but not limited to, tracks, buildings, signals, wire lines or pipe lines, may be endangered.
B. The cost of flagging and inspection provided by the VTA during the period of constructing that portion of the project located on or near Railroad property, as deemed necessary for the protection of
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 5 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum #1 – April 22, 2016
Railroad's facilities and trains, will be borne by the VTA to the extent provided in Sub Section 1.05 of this Section.
1.14 DELAYS DUE TO WORK BY RAILROAD
A. A delay due to work by the Railroad will be considered to occur whenever:
1. Railroad fails to perform when the Contractor has provided the minimum required notice, as provided herein, and reached agreement with Railroad, as to the date the Railroad is requested to execute a specific item of work to allow Contractor’s construction work to proceed.
2. The Railroad has not completed said specific unit of work within the number of performance days listed for that unit after said date or the date when the site was made available to the Railroad, whichever is later.
3. In the opinion of the VTA, the Contractor's operations are delayed or interfered with by reason of the Railroad not completing the unit of work on time.
4. The Contractor has provided written notice to the VTA that the Contractor’s operations are being delayed or interfered with by reason of the Railroad not completing the unit of work on time.
B. The Contractor shall notify the VTA of the dates when the Contractor will have completed all work necessary to permit the Railroad to begin work on each of the above units of work. Such notice shall be provided, in writing, at least the number of days listed above in advance of said dates. If after providing said notice, it becomes apparent to the Contractor that the Contractor’s work will not progress to the stage necessary to permit the Railroad to begin work on the scheduled date, the Contractor shall file a corrected notice with the VTA. Should a corrected notice not be filed in sufficient time to prevent the Railroad from unnecessarily mobilizing workers and equipment, including movement to the job site, any related costs incurred by the Railroad for nonproductive work shall be borne by the Contractor, and sums sufficient to cover the claims based upon bills rendered to the State by the Railroad for such costs will be deducted from the progress and final pay estimates due to the Contractor.
C. A performance day is defined as any day on which the Railroad crew that is performing the unit of work would normally work – except days on which the crew is prevented by inclement weather or conditions resulting immediately therefrom, as determined by the VTA – from proceeding with at least 75 percent of the normal labor and equipment force for at least 60 percent of the total daily time currently spent on the unit of work.
D. If delays due to work by the Railroad occur, and the Contractor sustains loss that, in the opinion of the VTA, could not have been avoided by the judicious handling of forces, equipment and plant, the amount of said loss shall be determined as provided in GC-32, Excusable Delays and Extensions of Time, of the General Conditions.
E. If a delay due to work by the Railroad occurs, an extension of time determined pursuant to the provisions in Article GC-32, Excusable Delays and Extensions of Time, of the General Conditions will be granted.
PART 2 PRODUCTS - Not Used
PART 3 EXECUTION - Not Used
END OF SECTION
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 35 15 Union Pacific Railroad Interface - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 01 45 30 STRUCTURAL QUALITY CONTROL
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes requirements for structural quality control, including the Contractor’s structural quality control and inspections and testing by Independent Testing Agency for the Santa Clara Station PUP Extension.
1.02 RELATED SECTIONS
A. GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. SC-33, Modifications to General Conditions, GC47 Quality Assurance
C. Section 02 41 16, Structure Demolition.
D. Section 03 05 10, Portland Cement Concrete.
E. Section 03 11 00, Concrete Formwork.
F. Section 03 11 14, Falsework.
G. Section 03 15 13, Waterstops.
H. Section 03 2100, Reinforcing Steel.
I. Section 03 30 00, Cast-in-Place Concrete.
J. Section 03 35 00, Concrete Finishing.
K. Section 03 41 00, Structural Precast Concrete.
L. Section 03 62 00, Non-Shrink Grouting.
M. Section 07 13 00 Membrane Waterproofing
N. Section 31 23 43, Structure Excavation and Backfill.
O. Section 31 50 00, Excavation Support and Protection.
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for Structural Quality Assurance shall be considered as included in the Contract lump sum price paid for Quality Assurance Program and no separate payment will be made therefor.
B. Full compensation for Structural Quality Control shall be considered as included in the Contract price paid for the various items of work involved and no additional compensation will be allowed therefor.
1.04 REFERENCES
A. American Society for Nondestructive Testing (ASNT):
1. Recommended Practice No. SNT-TC-1A - Personnel Qualification and Certification in Nondestructive Testing
B. American Welding Society (AWS):
1. AWS QC1 Standard for AWS Certification of Welding Inspectors
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 45 30 Structural Quality Control - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
C. Valley Transportation Authority (VTA):
1. Silicon Valley Rapid Transit Program - Draft Inspection, Sampling and Testing Plan, dated June 9, 2010
1.05 SUBMITTALS
A. Structural Quality Control Plan: Submit a Quality Control Plan in accordance with the provisions of Article 1.06B, “Structural Quality Control Plan,” herein, SC-33, Modifications to General Conditions, GC47 Quality Assurance and Section 01 45 00 - Quality Control.
B. Qualifications: Submit qualifications and documentation of certifications for personnel, facilities and agencies in accordance with the provisions of Article 1.06B, “Structural Quality Control Plan,” and Article 1.08B, “Qualifications of the Independent Testing Agency,” herein, SC-33, Modifications to General Conditions, GC47 Quality Assurance and Section 01 45 00 - Quality Control.
1.06 CONTRACTOR STRUCTURAL QUALITY CONTROL
1. Contractor Structural Quality Control: Quality Control and Quality Assurance for construction of all structures and structure components shall conform to the requirements of SC-33, Modifications to General Conditions, GC47 Quality Assurance and Section 01 45 00 - Quality Control, and these Technical Specifications.
2. The Contractor shall designate in writing a Structural Quality Control Manager (SQCM) to monitor the quality of work related to construction of structural components. The SQCM shall be responsible directly to the Contractor’s Quality Manager for the quality of all structural construction operations, including materials and workmanship, performed by the Contractor and all subcontractors.
a. The SQCM shall be responsible to the Contractor’s Quality Manager for submitting, receiving, and approving all correspondence, required submittals and reports related to quality control and quality assurance for construction of structures.
b. The SQCM shall not be employed or compensated by any subcontractor, or other persons or entities hired by subcontractors, or suppliers, who will provide other services or materials for the project. The SQCM may be an employee of the Contractor. The responsibilities of the SQCM may be fulfilled by the Contractor’s Quality Manager per SC-33, Modifications to General Conditions, GC47 Quality Assurance and Section 01 45 00 - Quality Control.
3. Structural Quality Control shall be the responsibility of the Contractor for the construction of all structures and all of the structural components of work as shown on the Structural Contract Drawings and as specified in these Technical Specifications. Structural construction operations shall include, but not necessarily be limited to the following:
a. Furnishing, forming, placing, and finishing cast-in-place concrete
b. Fabricating, furnishing, and erecting precast concrete
c. Constructing non-shrink grout
d. Fabricating, furnishing, and erecting structural steel and miscellaneous metal
e. Fabricating, furnishing, and erecting metal railings and ornamental picket fencing
f. Welding operations
g. Furnishing and installing waterproofing systems
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 45 30 Structural Quality Control - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
h. Structure excavation and backfill operations
B. Structural Quality Control Plan:
1. The SQCM shall provide a Structural Quality Control Plan (SQCP) to assure quality control and uniformity of materials and workmanship and conformance with the Structural Contract Drawings and these Technical Specifications. The SQCP shall be an extension of the Contractor’s Quality Plan (CQP) as outlined in SC-33, Modifications to General Conditions, GC47 Quality Assurance and Section 01 45 00 - Quality Control.
2. Prior to submitting the SQCP required herein, a meeting between the VTA, the Contractor, the SQCM and a representative from the Independent Testing Agency shall be held to discuss the requirements for Structural Quality Control.
3. As a minimum, the SQCP shall include the following information:
a. An organizational chart showing all QC personnel and their assigned responsibilities;
b. The name and qualifications of the SQCM. The SQCM shall be a licensed civil engineer in the state of California with a minimum of 10 years of experience in the construction of structures;
c. The name, address, telephone number, and qualifications of the Independent Testing Agency;
d. The names, qualifications, and documentation of certifications for all Quality Control (QC) inspection personnel to be used by the Independent Testing Agency;
e. The methods and frequencies for performing all required quality control procedures, including all inspections, material testing, and any required special procedures for all structural components of work;
f. A system for identification and tracking of required work, Shop Drawings, reviews, sampling, testing and inspections;
g. Forms to be used for Certificates of Compliance, daily production logs, and daily reports; and
h. Additional provisions and requirements as outlined in this Section and these Technical Specifications.
4. Additional SQCP Requirements for Structural Cast-in-Place Concrete:
a. Refer to Section 03 05 10 – Portland Cement Concrete, for additional requirements pertaining to quality control.
5. Additional SQCP Requirements for Structural Precast Concrete:
a. Refer to Section 03 41 00 - Structural Precast Concrete for additional requirements pertaining to designation of a Precast Concrete Quality Control Manager (PCQCM) and to preparation of a Precast Concrete Quality Control Plan (PCQCP)
6. Additional SQCP Requirements for Structural Welding:
a. The SQCP shall include a list of all laboratory facilities, technicians and inspectors and indicate which tests each will perform. Submit copies of all current certifications for approval by the VTA.
7. It is expressly understood that the VTA's review of the Contractor's SQCP and any inspection or testing performed by the VTA shall not relieve the Contractor of any responsibility under the Contract for the successful completion of the Work in conformance with the requirements of the
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Contract Drawings and Technical Specifications. The VTA's approval shall neither constitute a waiver of any of the requirements of the Contract Drawings and Technical Specifications nor relieve the Contractor of any obligation thereunder; and defective work, materials, and equipment may be rejected notwithstanding approval of the SQCP.
1.07 VTA QUALITY ASSURANCE OVERSIGHT
A. The VTA will monitor the implementation of the Contractor’s quality control programs through observation, inspection, sampling and testing in accordance with the Silicon Valley Rapid Transit Program - Draft Inspection, Sampling and Testing Plan, dated June 9, 2010.
B. Regardless of the acceptance for a given structural component by the Contractor or Independent Testing Agency, the VTA will reject any structural component that does not conform to the approved Structural Quality Control Plan (SQCP), the details shown on the Contract Drawings, or the requirements in these Technical Specifications.
1.08 INDEPENDENT TESTING AGENCY
A. Sampling, Testing and Inspection:
1. The Contractor’s approved Independent Testing Agency shall perform sampling, testing, and inspections to verify compliance with these Technical Specifications. The Independent Testing Agency shall be responsible directly to the SQCM for the quality of all structural sampling, testing and inspection of materials, workmanship, and operations, required by these Technical Specifications and as directed by the VTA.
2. The Independent Testing Agency shall perform inspection and testing prior to, during, and after structural construction operations as necessary to ensure that materials and workmanship conform to the details shown on the Contract Drawings, and to these Technical Specifications.
3. Notify the VTA at least 48 hours in advance of sampling, tests and inspections being performed by the Independent Testing Agency. The VTA may elect to observe these procedures. Provide samples and facilities for inspection to the VTA if requested.
4. The Independent Testing Agency shall collect samples of materials for testing in accordance with the provisions of these Technical Specifications and as directed by the VTA.
B. Qualifications of the Independent Testing Agency:
1. The Independent Testing Agency shall not be a subsidiary or be partly or wholly owned by the Contractor or any subcontractor.
2. Laboratory tests shall be carried out in facilities that have current accreditation for that test.
3. California laboratory tests shall be carried out in a facility that is a Caltrans Approved laboratory for that test. Technicians shall be Caltrans Certified Technicians for that test.
4. Field tests, inspections and sampling required in these Technical Specifications to meet California Tests shall be performed by a Caltrans Certified Inspector.
5. Field tests, inspections and sampling of concrete shall be performed by an International Code Council (ICC) Certified Special Inspector for Reinforced Concrete.
6. Inspections of plant-precast concrete shall be performed by a civil engineer licensed in the State of California, or a Plant Quality Personnel Certification, Level II Inspector, certified by the Precast/Prestressed Concrete Institute. An inspector from the Independent Testing Agency shall witness all precast concrete operations.
7. Inspections of field-precast concrete shall be in accordance with the requirements for cast-in-place concrete.
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8. Field Inspections and sampling of structural steel and miscellaneous metal shall be performed by an ICC Certified Special Inspector for Structural Steel.
9. Welding inspections shall be performed and certified by an AWS Certified Welding Inspector (CWI), certified in accordance with AWS QC1.
10. Nondestructive testing (NDT) shall be performed and certified by an inspector certified in accordance with ASNT Recommended Practice No. SNT-TC-1A. Only persons certified for NDT Level I and working under a NDT Level II person or persons certified for NDT Level II may perform nondestructive testing.
11. Inspections of structural earthwork shall be performed by a geotechnical engineer licensed in the State of California.
PART 2 PRODUCTS (Not Used)
PART 3 EXECUTION (Not Used)
END OF SECTION
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SECTION 01 55 26
TRAFFIC CONTROL
PART 1 - GENERAL
1.01 SUMMARY
A. This Section includes requirements for:
1. Preparing traffic control and detour plans, obtaining applicable permits, complying with local jurisdictional agency requirement, adapting the traffic control and detour plans to changing conditions, and providing temporary pedestrian/bike facilities.
2. Flagging and traffic handling equipment and devices for use by Contractor in discharging its responsibilities for convenience of the public, public traffic, and public safety.
3. Steel plating of trenches and other depressions in areas in or adjacent to public traffic.
B. The requirements for final pavement markings are included in Section 32 17 23, Pavement Markings.
1.02 RELATED SECTIONS
A. Section 01 20 00, Price and Payment Procedures
B. Section 01 32 16, Construction Progress Schedule
C. Section 32 17 23, Pavement Markings
D. SC-6, Contract Data Requirements
E. SC-7, Permits, Fees and Inspection
F. SC-10, Site Access, Completion Milestone, and Specific Construction Requriements
G. SC-12, Sound Control Requirements
H. SC-13, Safety Precautions, Programs and First Aid Requirements
I. SC-33, Modifications to General Conditions, GC47 Quality Assurance
J. SC-51, Technical Submittals List
K. GC-34, Contractor’s Work Area
L. GC-35, Temporary Construction Facilities and Utilities
M. GC-38, Public Convenience and Safety
N. GC-43, Submittal of Shop Drawings, Product Data and Samples
O. GC-49, Certificates of Compliance and Testing
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1.03 MEASUREMENT AND PAYMENT
A. The contract lump sum price paid for Traffic Control shown on the Schedule of Quantities and Prices shall include full compensation for furnishing all labor, materials, tools, equipment and incidentals, and for doing all the work involved in Traffic Control System, including preparation, stamping and signing of the traffic control drawings, submission and approval from all jurisdictions having authority, as well as placing, removing, storing, maintaining, moving to new locations, replacing, and disposing of the components of the traffic control system including construction area signs, electronic changeable message signs, temporary railing (Type K), temporary barricades, temporary crash cushion modules, channelizers, temporary pavement striping (2 coat retro reflective paint), pavement markings, and pavement markers including Type N marker panels, as required, and removal of existing pavement striping, pavement markings and pavement markers as required by the jurisdictional authority, specified in these technical specifications, and as directed by the VTA, and no additional compensation will be allowed there for.
B. Full compensation for traffic control for detours and closures of sidewalks, lanes, streets, and intersections; temporary walkways and temporary paving; and maintaining required access through intersections and driveways will not be paid for separately and shall be included as part of the payment for Traffic Control and shall include full compensation for all labor, including flagmen and local reserve police forces as required by the affected authority, materials, including aggregate base and asphalt concrete pavement, traffic plates, tools, equipment, and all other costs necessary to perform the work as herein described and shown on the plans.
C. Full compensation for providing temporary fence and temporary railing at pedestrian facilities and all Chain Link (access control) fence locations shall be considered as included in the contract lump sum price paid for Traffic Control and no additional compensation will be allowed there for.
D. Full compensation for temporary barricades, temporary railing (Type K) and crash cushion modules that may be required for public convenience and safety as specified elsewhere shall be considered as included in the contract lump sum price paid for Traffic Control system and no additional compensation will be allowed therefor.
E. Full compensation for furnishing, installation, and removal of the construction area signs, as required by the plans and these specifications, as shown on the Contractor’s traffic control drawings and as well as those required by the VTA and the jurisdictional authority, shall be considered as included in the contract lump sum price paid for Traffic Control and no additional compensation will be allowed therefor.
F. Full compensation for the work involved including placing and removing steel plates and grinding and restoring adjacent paving as specified herein shall be considered as included in the contract items of work requiring steel plating over trenches and no additional compensation will be allowed there for.
1.04 REFERENCES
A. County of Santa Clara Standard Specifications, May 2000 http://www.sccgov.org/rda/attachments/(004_standard_specifications_may_2000_ss.pdf and 2005 cumulative Amendments http://www.sccgov.org/rda/attachments/(005_standard_specifications_- _cumulative_amendments_ss.pdf
B. State of California, Department of Transportation:
1. California Manual of Uniform Traffic Control Devices for Streets and Highways (FHWA’s MUTCD 2003 Edition)
1.05 SYSTEM DESCRIPTION
A. Traffic control system shall consist of all flagging, stamped and signed traffic control submittals, including approval of all jurisdictions having authority, construction traffic control devices, in accordance with the
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requirements of the local jurisdiction and the provisions of Sections 12-1, 12-2, and 12-3 of “Construction Area Traffic Control Devices,” of the Standard Specifications as modified by these technical specifications.
B. Attention is directed to GC-38, “Public Convenience and Safety,” and Section 12, "Construction Area Traffic Control Devices," of the Standard Specifications, and these technical specifications. Nothing in these technical specifications shall be construed as relieving the Contractor from the responsibilities specified in GC-38, “Public Convenience and Safety.” Maintain property and pedestrian access and bicycle routes at all times.
C. Lane closures shall conform to the provisions of Article 3.04, "Traffic Control System for Lane Closure" herein.
D. Detour Plans: Traffic control working drawings shall include the following:
1. The extent and configuration of traffic pattern changes, including beginning and completion dates of the work and duration of temporary and interim traffic control.
2. The means and devices for traffic control, including:
a. Details of temporary signal operations.
b. Details of type and location of signs, striping, markers, barriers, delineators, and other devices.
3. Description of the work, time required for roadway closure and detours, method of roadway repairs and paving conforms prior to opening, and required construction area signs.
4. Haul routes and ingress to and egress from medians.
E. Traffic control working drawings submitted by Contractor shall include specific details for transportation of materials and equipment to and from the Worksite. These details shall include haul routes and times, ingress/egress locations, methods of delivery, and traffic control measures to be taken to provide safe ingress/egress without disruption to the traveling public. These delivery plans are required for each traffic stage and delivery location. Specific mention shall be made to deliveries performed during peak traffic hours which are generally from 5:00 AM to 9:00 AM and from 3:00 PM to 8:00 PM on weekdays.
F. Detours shall conform to the following:
1. Contractor shall not impact traffic or close traffic lanes during peak commute hours. Lane closures shall consist of closing only one traffic lane in a single direction. In case of emergency, Contractor shall only be able to close a lane in one direction at a time. Contractor shall fully close lanes before intersections and not within intersections to avoid traffic merging within the intersection.
2. Signs of all detours will be posted, and notices distributed to adjacent and fronting businesses and residents 1 week in advance of the road closure.
3. All road closures shall be coordinated with, and approved by, the traffic engineers of the relevant authorities before providing the required advance notifications.
4. Vehicular Traffic: The full width of the traveled way shall be open for use by public traffic when construction operations are not actively in progress. Upon approval of traffic control plan by the VTA and all jurisdictions having authority, multiple lane closures and area detours will be permitted in accordance with the Plans.
G. In regard to street, lane, and driveway closures and service or utility disruptions within the City of Santa Clara, the Contractor shall provide timely, at least one week in advance of closure or disruption, the information necessary for the VTA to make notifications to the following entities:
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1. City of Santa Clara
2. County of Santa Clara
3. Affected School Districts
4. Affected bus riders
5. Ambulance companies and other emergency response entities.
H. The Contractor shall provide construction area signs notifying bike riders and pedestrians of pending bike and pedestrian route closures and detours at least one week in advance of closure.
I. Safe pedestrian walkways shall be provided to allow unimpeded pedestrian movement along streets and at crosswalks. At least one side of the street shall be open to pedestrian/bike traffic at all times. Alternative walk shall be appropriately marked. Pedestrian walkways shall be provided to allow unimpeded pedestrian movement along streets and at crosswalks. Pedestrian walkways through construction areas shall meet all ADA requirements unless existing conditions preclude the Contractor’s ability to meet the ADA requirements. Temporary walkways that the Contractor elects to construct using plywood shall meet ADA requirements for coefficient of friction to prevent pedestrians from slipping on the walkway.
J. In the event that Contractor exceeds the access closure duration as approved, Contractor shall perform additional work for traffic control as required by the VTA at Contractor's expense.
K. The Contractor shall keep access to side streets open at all times.
1.06 SUBMITTALS
A. Submittals General Requirements:
1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. Contractor shall submit traffic control working drawings for each staged activity or detour that requires re- routing of traffic including re-routing of pedestrian and bicycle traffic or a lane closure to VTA for its review and to all other jurisdictions having authority for review and appropriate action. These working drawings shall be submitted to VTA no less than 35 working days before performing the staged activity or detour that affects the traffic flow. Do not start construction until the traffic control plan is approved by the City of Santa Clara and the County of Santa Clara. The construction dates shall be in accordance with the approved construction schedule. Include haul routes and provisions for access to and egress from medians. Include construction area signage and signage for business access on traffic control working drawings.
1. The VTA shall supply the Contractor with electronic files of the construction drawings (AutoCAD), for the Contractor’s use in developing the traffic control working drawings.
2. VTA reserves the option to revise the drawings as deemed necessary to comply with site specific conditions. Contractor shall not detour traffic or interfere with the normal flow of traffic until Contractor's detour and traffic control drawings are approved by VTA and all other jurisdictions having authority, including City of Santa Clara, County of Santa Clara, and Santa Clara Valley Water District.
3. Traffic control drawings shall be reviewed, stamped, and signed by a Traffic Engineer registered in the State of California.
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C. Submit working drawings showing layout of steel plating for the intersections including detailing showing how plates are prevented from shifting, the means taken to ensure bicycle safety, and the protection of existing paving to remain. Submit any requests for exceptions to the requirements specified herein for steel plating to the VTA in writing. For steel plates spanning more than 4 feet, submit structural design prepared and signed by a registered civil engineer.
D. Submittals for Addition to VTA’s List: Materials and products will be considered for addition to said approved prequalified and tested list if the manufacturer of the material or product submits to the VTA a sample of the material or product. The sample shall be sufficient to permit performance of all required tests. Approval of such materials products will be dependent upon a determination as to compliance with the specifications and any test the VTA may elect to perform.
E. Quality Assurance/Control Submittals
1. Submit a Certificate of Compliance as specified in GC-49, Certificates of Compliance and Testing, for signing and delineation materials and products. Said certificate shall also certify that the signing and delineation material or product conforms to the prequalified testing and approval of the VTA and was manufactured in accordance with the approved quality control program.
1.07 QUALITY ASSURANCE
A. Refer to SC-33, Modifications to General Conditions, GC47 Quality Assurance for Contractor’s responsibilities for Quality Assurance.
B. Regulatory Requirements:
1. The Contractor shall be responsible for obtaining approvals and permits for traffic control plan, including temporary and interim traffic signals, closure of part or all roads or streets, and diversion of traffic. Such approval shall be obtained from the VTA and all other jurisdictions having authority, including the City of Santa Clara and County of Santa Clara.
2. The Contractor shall verify the traffic control requirements with the jurisdictional authorities, including the City of Santa Clara and County of Santa Clara, and submit traffic control working drawings, as specified under “Submittals” herein. Routing and detour proposals shall be submitted by the Contractor for approval by the VTA.
3. The VTA will submit the Contractor’s traffic working drawings including detour plans to the jurisdictional authorities for their approval, including the City of Santa Clara and County of Santa Clara. Contractor shall assist the VTA when requested in obtaining approvals.
1.08 DELIVERY, STORAGE AND HANDLING
A. Transportation of materials and equipment to and from the work site shall not be performed during peak traffic hours, as established on Capitol Expressway, and in accordance will all other special restrictions outlined in the encroachment permit.
1.09 SCHEDULING
A. Necessary submittals, approvals, and notifications required in this section shall be shown in the Construction Progress Schedule, with time allowances for submittals, re-submittals, and approvals.
B. Designated legal holidays are: January 1st, the third Monday in February, the last Monday in May, July 4th, the first Monday in September, November 11th, Thanksgiving Day, and December 25th. When a designated legal holiday falls on a Sunday, the following Monday shall be a designated legal holiday. When November 11th falls on a Saturday, the preceding Friday shall be a designated legal holiday.
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C. Minor deviations from the requirements of this Section concerning hours of work which do not significantly change the cost of the work may be permitted upon the written request to the VTA. Permission may be granted if, in the opinion of the VTA, public traffic will be better served and the work expedited. Such deviations shall not be adopted until the VTA has indicated its written approval. All other modifications will be made by contract change order. The Contractor shall not receive additional time or payment for possible delays if the Contractor fails to provide written notification to the VTA in a timely manner.
PART 2 - PRODUCTS
2.01 CONSTRUCTION AREA TRAFFIC CONTROL DEVICES
A. Contractor shall use signing and delineation materials which have been prequalified and tested by the California State Department of Transportation (Caltrans). A complete list of State approved products may be found in the latest version of Caltrans Standard Special Provisions S8-M03, on the Caltrans website at the following URL address: http://www.dot.ca.gov/hq/traffops/signtech/signdel/contractorfurnished.htm.
B. Approval of these materials does not preclude the VTA from sampling and testing any of the signing and delineation materials or products at any time.
C. Channelizers: Channelizers shall be surface mounted type. Channelizer posts shall be orange in color. If channelizers are surface mounted with epoxy to pavement to remain, Contractor shall replace damaged paving to the satisfaction of VTA at no additional expense to VTA. Channelizers shall have double-base.
D. Pavement Markers: Temporary reflective raised pavement markers shall be, at the option of Contractor, one of the temporary pavement markers listed for short term day/night use (14 days or less) or long term day/night use (6 months or less).
E. Traffic Control Signs: Provide each change in location of traffic with adequately posted signs mounted on barricades or standard posts. Regulatory signs required for the construction areas, as well as temporary NO PARKING signs which are to be used for short periods, shall be provided and removed by Contractor in accordance with the approved traffic plan.
F. Temporary Railing (Type K) and crash cushion modules required for public safety and convenience shall be in accordance with Section 12-3 of the Standard Specifications.
G. Portable Changeable Message Signs: Where noted on the plans and as required by the VTA or the jurisdictional authority, the Contractor shall supply, install and maintain portable changeable message signs in accordance with Section 12-3.12, “Portable Changeable Message Signs”, of the Standard Specifications.
H. Flashing Arrow Signs: Where required by the VTA or the jurisdiction authority, or shown on the Plans, the Contractor shall supply, install and maintain flashing arrow signs in accordance with Section 12-3.03, “Flashing Arrow Signs”, of the Standard Specification.
PART 3 - EXECUTION
3.01 3.01 MAINTENANCE AND CONTROL OF TRAFFIC
A. Furnish, install, maintain, and remove when no longer required, traffic control and protective devices required on the approved traffic plan. Traffic control and protective devices shall include temporary directional electrical warning signs (arrow boards), detour signs, informational signs, and danger signals; temporary barricades and guard rails; temporary lighting, overhead warning lights, and flashing lights; removal of permanent and temporary pavement markings; and the services of certified flagmen. Maintain communication with the VTA regarding Contractor's operations in maintaining and controlling traffic. Street and road closures shall comply with the General Conditions.
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B. Redirecting Traffic:
1. Channelizing, shifting of traffic lanes, and barricading of traffic in connection with the work will be done in accordance with the approved traffic plan. Existing local standards for signing and marking of construction areas will apply in addition to Manual on Uniform Traffic Control Devices with the California Supplement.
2. When required by the technical specifications, shown on the Plans, or required by responsible public agencies, construct, maintain, and remove detours and detour bridges for the use of public traffic.
3. The failure or refusal of Contractor to construct and maintain detours at the proper time shall be sufficient cause for closing down the work, at the Contractor’s expense, until such detours are in satisfactory condition for use by public traffic.
C. Temporary Closing: Prior to temporarily closing to traffic part of any street, sidewalk, or other access or to changing traffic patterns from those indicated on the Plans, obtain approval from VTA at least two weeks before such closures or changes are made. VTA will obtain approval from the jurisdictional authorities. Deviations will be for an emergency condition affecting life and property only, and Contractor shall immediately notify VTA and the appropriate jurisdictional agency of any such emergency changes. Copies of approvals shall be furnished to VTA.
D. Contractor's Surface Operation: Schedule and conduct excavation or construction activities as required to permit opening of the street areas to traffic without unnecessary delays or provide supplemental access.
E. Temporary Walkways: In areas where removal of existing sidewalks is necessary, maintain safe access to adjacent businesses, entrances, and properties by temporary walkways having a width of not less than 4 feet. Refer to pedestrian facilities specified herein.
F. Intersections: When an intersection is indicated on the Plans or on the Contractor’s traffic control working drawings to remain open during construction within the intersection, phase construction so that the required number of traffic lanes on each street will be provided at all times during these operations. Upon completion of decking installation, traffic in intersection shall be fully maintained except where closure has been previously approved. Trenches or open excavations shall be adequately bridged at the end of each work day where traffic lanes are to be open to traffic.
G. Temporary Paving and Patching: Construct, maintain, and remove temporary pavement and patching required to safely and expeditiously handle vehicle and pedestrian traffic, within or adjacent to the construction site. Temporary pavement and patching composition shall conform to the specifications of the local jurisdictional agency. Any construction, maintenance, or removal required by the Contractor's operations off site shall conform to the requirements specified herein.
H. Maintenance of Traffic Control System
1. Contractor shall patrol the traffic control area and reset all disturbed signs and traffic control devices immediately on a continuous 24 hour basis including weekends and holidays. All non-applicable signs shall be removed or covered during periods not needed.
2. Upon failure of the Contractor to provide immediately such flagmen, or to properly provide, erect, maintain, or remove such barricades and lights, and erects, maintain, or remove standard signs when ordered to do so by the VTA, the VTA shall be at liberty, without further notice to the Contractor or his surety, to provide the necessary flagmen or local reserve police forces, to provide, erect, maintain, or remove barricades and lights, and to erect, maintain and remove standard sign, and deduct all of the costs thereof from any payments due or coming due the Contractor.
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I. Contractor shall maintain access for fire, ambulance and law enforcement emergency vehicles at all times. Said access requirements may require the Contractor to temporarily suspend his operations until the emergency is over.
J. The Contractor shall coordinate its plans for control of traffic with local authorities having jurisdiction over the area and shall cooperate with such authorities during the period of control of traffic.
1. The traffic engineering division or field inspector of the authority having jurisdiction shall be advised by the Contractor of the Contractor’s plans for implementing the approved traffic control measures at least 48 hours in advance of execution of such control measures.
K. Channelizers shall be placed in accordance with Section 12-3.07, “Channelizers”, of the Standard Specifications, along both sides of the median whenever construction is occurring within the median. Channelizers shall be placed at intervals no greater than 10 feet on center.
3.02 CONSTRUCTION OPERATIONS UNDER TRAFFIC
A. General:
1. Construction equipment is defined for the purposes of this Article as all types of equipment, vehicles, and tools used in connection with construction work. The term workers include every person or firm performing work in or adjacent to public streets.
2. Night time work shall be in compliance with Caltrans’ nighttime traffic control criteria and with the City of Santa Clara noise requirements.
B. Construction Equipment: When in traffic lanes, operate vehicles and equipment at normal traffic speeds. If this is not practicable, display a slow moving vehicle emblem in accordance with the Motor Vehicle Code. Construction equipment shall not be parked in any lane currently open for use by normal traffic. Equipment parked or stored at the work site shall be behind a guard rail, barrier, curb, or other protective device.
C. For closure of lanes, pocket or shoulder refer to Hours of Operation and Schedule Constraintsin article SC-10.2.
D. One-Way Traffic: No construction equipment shall be operated in traffic lanes, except in the designated direction of travel for respective lanes with required traffic control and safety devices.
E. Construction Operations:
1. No construction work involving occupancy of traffic lanes shall be performed during adverse weather conditions or adverse road conditions except when so authorized by VTA and only when traffic is properly safeguarded by the use of flashers and lights in addition to the signs and other markings prescribed herein. During these periods no construction deliveries shall take place over a travel lane or immediately adjacent thereto.
2. When traffic conditions dictate, the VTA may require Contractor to modify his work operation for such length of time as required to alleviate the hazardous traffic conditions.
F. Equipment Travel: Any construction equipment or material required in construction which exceeds the maximum vehicle dimensions enumerated in the Motor Vehicle Code shall be moved only in accordance with the established State and local regulations. No such oversize load shall be moved over the streets of the local jurisdictional agency without first obtaining an oversize permit from the appropriate agency.
G. Crossing Traffic Lanes: When crossing open traffic lanes by construction equipment is necessary, such crossing shall be safeguarded with flagmen.
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H. Flagmen: Provide certified flagmen thoroughly instructed in flagging procedures as required safeguarding and maintaining vehicle and pedestrian traffic. The Contractor shall submit to VTA the list of flagmen proposed for the work and demonstrate the qualifications and certifications possessed by these flagmen. The Contractor shall provide flagmen with certifications and qualifications to the satisfaction of the VTA. Flagmen shall perform their duties courteously and in such manner as will ensure the safety and convenience of the traffic within the limits of the guarded area. Traffic shall not be flagged to a stop unless necessary for safety. Flagmen shall be supplied with flares for adverse weather conditions and with an approved red flag not less than 24 inches square or a portable STOP sign for slowing or directing traffic to another lane. Flagmen shall wear fluorescent orange safety vests and yellow hard hats.
I. Removal of Traffic Control Devices: Temporary signs, barricades, barrier curbs, drums, and cones used to safeguard traffic in connection with construction work shall be removed at the close of the work day or as scheduled in the approved Traffic Plan, unless the state of the work is such that warning devices are still needed and are adapted for night use.
J. Storage: No material shall be stored on any public right-of-way without VTA approval.
K. The Contractor shall obtain a City of Santa Clara and/or County of Santa Clara hauling permit, if required.
3.03 TRAFFIC CONTROL
A. A. Contractor shall control the flow of traffic in the area of the Work as necessary.
1. Methods and procedures for such control shall be coordinated with VTA and shall be subject to VTA’s approval.
B. Not less than 35 working days before performing staged activity or detour affecting the flow of traffic, Contractor shall notify VTA of intent to perform such work.
1. Such notification shall be accompanied by a traffic control/detour plan.
2. VTA and local jurisdiction will review Contractor's traffic control/detour plan for approval. Contractor shall cooperate with such authorities during the period of control of traffic.
3. Contractor shall not detour traffic without prior written approval of the traffic control/detour plan.
C. Parking
1. Contractor shall keep the area of work free of parked vehicles. The Contractor shall make his own arrangements relative to keeping the working area clear of parked vehicles.
2. Contractor shall not park vehicles of Contractor or Contractor's employees on the traveled way or shoulders, even if such areas are closed to the public.
D. Contractor shall observe laws and rules of traffic when moving Contractor's vehicles or equipment on roadways open to the public.
E. Contractor shall not allow vehicles to stop in temporary traffic lanes or in loading, unloading, or storage areas.
1. NO STOPPING, NO PARKING, and TOW AWAY warning signs shall be posted by the Contractor in accordance with the approved traffic plan. For City of San SANTA CLARA areas, these signs shall be purchased from the City’s Streets and Traffic Department, (408) 361-0173.
2. In accordance with California Vehicle Code Article 22652, the signs shall remain in position for twenty-four hours before the stopping and parking restrictions become enforceable.
File Date: 02/22/2016 TECHNICAL SPECIFICATION 01 55 26 Traffic Control - 9 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3. The signs shall state the days and hours when the restrictions apply.
4. For “no parking areas” in the City of Santa Clara, Contractor shall obtain a “no parking” permit from the City’s Streets and Traffic Department.
5. For areas within County of Santa Clara jurisdiction, the encroachment permit requirements shall apply.
3.04 TRAFFIC CONTROL SYSTEM FOR LANE CLOSURE
A. A traffic control system shall consist of closing traffic lanes in accordance with the details shown on the Plans, the provisions of Section 12, "Construction Area Traffic Control Devices," of the Standard Specifications and the General and Special Conditions.
1. An arrow board shall be provided for each lane closure.
B. The provisions in this Section will not relieve the Contractor from the responsibility to provide additional devices or take the measures as may be necessary to comply with the provisions in Section 7-1.09, "Public Safety," of the Standard Specifications.
C. During traffic stripe operations and pavement marker placement operations using bituminous adhesive, traffic shall be controlled, at the option of the Contractor, with either stationary or moving type lane closures. During all other operations traffic shall be controlled with stationary type lane closures. The Contractor's attention is directed to the provisions in Section 84-1.04, "Protection From Damage," and Section 85-1.06, "Placement," of the Standard Specifications.
D. If any component in the traffic control system is displaced, or ceases to operate or function as specified, from any cause, during the progress of the work, the Contractor shall immediately repair the component to its original condition or replace the component and shall restore the component to its original location.
E. Stationary Type Lane Closure: When lane closures are made for work periods only, at the end of each work period, all components of the traffic control system, except portable delineators placed along open trenches or excavation adjacent to the traveled way shall be removed from the traveled way and shoulder. If the Contractor so elects, the components may be stored at selected central locations, approved by the Engineer, within the limits of the highway right of way.
F. Each vehicle used to place, maintain and remove components of a traffic control system on multilane highways shall be equipped with a Type II flashing arrow sign which shall be in operation when the vehicle is being used for placing, maintaining, or removing the components. Vehicles equipped with Type II flashing arrow sign not involved in placing, maintaining, or removing the components when operated within a stationary type lane closure shall only display the caution display mode. The sign shall be controllable by the operator of the vehicle while the vehicle is in motion. The flashing arrow sign shown on the plans shall not be used on the vehicles which are doing the placing, maintaining and removing of components of a traffic control system, and shall be in place before a lane closure requiring its use is completed.
3.05 PEDESTRIAN AND BICYCLE FACILITIES
A. Pedestrian Facilities, General:
1. Pedestrian walkways shall have skid resistant surfaces and shall be free of irregularities.
2. Hand railings shall be provided on each side of temporary pedestrian walkways as necessary to protect pedestrian traffic from hazards due to construction operations and adjacent vehicular traffic and to prevent pedestrian movement to construction areas and vehicular traffic lanes.
File Date: 02/22/2016 TECHNICAL SPECIFICATION 01 55 26 Traffic Control - 10 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3. Protective overhead covering shall be provided as necessary to provide protection from falling objects and drip from overhead structures.
4. A railing above the ground and 4 feet high shall be provided on each side of the walkway.
5. Railings and walkways shall be maintained in good condition by the Contractor. Walkways shall be kept free of obstructions or hazards. Slope of ramp shall be a maximum of 12:1.
B. Temporary pedestrian walkways that are constructed shall be provided with surfacing of asphalt concrete, Portland cement concrete, or timber.
C. Railings for temporary walkways shall be constructed of wood, S4S, and shall be painted white.
D. If a street or lane closure will block a bicycle route or pedestrian sidewalk, provide signs adjacent to proposed closure at least one week in advance of closure. Provide alternative bicycle and pedestrian routes.
3.06 TEMPORARY PAVEMENT DELINEATION
A. Temporary pavement delineation shall be furnished, placed, maintained and removed in accordance with the provisions in Section 12-3.01, "General," of the Standard Specifications and these technical specifications. Whenever the work causes obliteration of pavement delineation, temporary or permanent pavement delineation shall be in place prior to opening the traveled way to public traffic. Lane line or centerline pavement delineation shall be provided at all times for traveled ways open to public traffic.
B. Installation: All work necessary, including any required lines or marks, to establish the alignment of temporary pavement delineation shall be performed by the Contractor. Surfaces to receive temporary pavement delineation shall be dry and free of dirt and loose material.
C. Temporary pavement delineation shall not be applied over existing pavement delineation or other temporary pavement delineation. Temporary pavement delineation shall be maintained until superseded or replaced with a new pattern of temporary pavement delineation or permanent pavement delineation.
D. Temporary pavement markers which conflict with a new traffic pattern or which is applied to the final layer of surfacing or existing pavement to remain in place shall be removed when no longer required for the direction of public traffic, as determined by the VTA.
E. Temporary Lane Line and Centerline Delineation. Whenever lane lines and centerlines are obliterated and temporary pavement delineation to replace the lines is not shown on the Plans, the minimum lane line and centerline delineation to be provided for that area shall be temporary reflective raised pavement markers placed at longitudinal intervals of not more than 24 feet. The temporary reflective raised pavement markers shall be the same color as the lane line or centerline the markers replace.
F. Temporary reflective raised pavement markers shall be placed in accordance with the manufacturer's instructions and shall be cemented to the surfacing with the adhesive recommended by the manufacturer, except epoxy adhesive shall not be used to place pavement markers in areas where removal of the markers will be required.
G. Temporary lane line or centerline delineation consisting entirely of temporary reflective raised pavement markers placed on longitudinal intervals of not more than 24 feet, shall be used on lanes opened to public traffic for a maximum of 14 days. Prior to the end of the 14 days the permanent pavement delineation shall be placed. If the permanent pavement delineation is not placed within the 14 days, the Contractor shall provide, at his expense, additional temporary pavement delineation. The additional temporary pavement delineation to be provided shall be equivalent to the pattern specified for the permanent pavement delineation for the area, as determined by the VTA.
File Date: 02/22/2016 TECHNICAL SPECIFICATION 01 55 26 Traffic Control - 11 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3.07 TEMPORARY RAILING (TYPE K)
A. Temporary railing (Type K) shall be placed at the locations shown on the plans, as specified in these technical specifications or in the Standard Specifications or as ordered by the VTA, and shall conform to the provisions in Section 12, “Construction Area Traffic Control Devices” of the Standard Specifications and these technical specifications.
B. The Contractor’s attention is directed to the provisions in GC-38, “Public Convenience and Safety,” and Section SC-10, Site Access, Completion Milestones, and Apecific Construction Requirements.
C. The Contractor shall install temporary railing (Type K) between any lane carrying public traffic and any excavation, obstacle, or storage area, as well as for extended lane closures and when the following conditions exist:
1. Excavations. Any excavation, the near edge of which is 13 feet or less from the edge of the lane, except:
a. Excavations covered with sheet steel or concrete covers of adequate thickness to prevent accidental entry by traffic or the public. b. Excavations less than 12 inches deep. c. Trenches less than 12 inches wide for irrigation pipe or electrical conduit, or excavations less than 1 foot in diameter. d. Excavations in side slopes, where the slope is steeper than 4:1. e. Excavations protected by existing barrier or railing.
2. Temporarily Unprotected Permanent Obstacles: Whenever the work includes the installation of a fixed obstacle together with a protective system, such as a sign structure together with protective railing, and the Contractor elects to install the obstacle prior to installing the protective system; or whenever the Contractor, for his convenience and with permission of the VTA, removes a portion of an existing protective railing at an obstacle and does not replace such railing complete in place during the same day.
3. Storage Areas: Whenever material or equipment is stored within 12 feet of the lane and such storage is not otherwise prohibited by the specifications.
4. When lane closure are in place overnight or longer and when the Contractor elects to utilize the extended lane closure, as described in Special Conditions SC-10.5.
D. The approach end of temporary railing (Type K) installed in accordance with the requirements in this Section and in GC-38, “Public Convenience and Safety,” shall be offset a minimum of 15 feet from the edge of the traffic lane open to public traffic. The temporary railing shall be installed on a skew toward the edge of the traffic lane of not more than 1:10 (transversely: longitudinally) with respect to the edge of the traffic lane. If the 15 feet minimum cannot be achieved, the temporary railing shall be installed on the 10 to 1 skew to obtain the maximum available offset between the approach end of the railing and the edge of the traffic lane, and an array of temporary traffic cushion modules shall be installed at the approach end of the temporary railing.
3.08 TEMPORARY CRASH CUSHION MODULE
A. General. Whenever the work or the Contractor's operations establishes a fixed obstacle, the exposed fixed obstacle shall be protected with a sand filled temporary crash cushion. The sand filled temporary crash cushion shall be in place prior to opening the lanes adjacent to the fixed obstacle to public traffic.
B. Sand filled temporary crash cushions shall be maintained in place at each location, including times when work is not actively in progress. Sand filled temporary crash cushions may be removed during a work period for access to the work provided that the exposed fixed obstacle is 15 feet or more from a lane carrying public
File Date: 02/22/2016 TECHNICAL SPECIFICATION 01 55 26 Traffic Control - 12 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
traffic and the temporary crash cushion is reset to protect the obstacle prior to the end of the work period in which the fixed obstacle was exposed.
C. Modules shall be filled with sand in accordance with the manufacturer's directions, and to the sand capacity in kilograms for each module as shown on the Plans.
D. Modules damaged due to the Contractor's operations shall be repaired immediately by the Contractor at the Contractor's expense. Modules damaged beyond repair, as determined by the VTA, due to the Contractor's operations shall be removed and replaced by the Contractor at the Contractor's expense.
E. Installation: Temporary crash cushion modules shall be placed on movable pallets or frames conforming to the dimensions shown on the Standard Plans. The pallets or frames shall provide a full bearing base beneath the modules. The modules and supporting pallets or frames shall not be moved by sliding or skidding along the pavement or bridge deck.
F. A Type R or P marker panel shall be attached to the front of the crash cushion as shown on the plans, when the closest point of crash cushion array is within 12 feet of the traveled way. The marker panel, when required, shall be firmly fastened to the crash cushion with commercial quality hardware or by other methods approved by the VTA.
G. When no longer required, as determined by the VTA or at the completion of the project, temporary crash cushion modules, sand filling, pallets or frames, and marker panels shall become the property of the Contractor and shall be removed from the site of the work. Temporary crash cushion modules shall not be installed in permanent work.
3.09 CITY OF SANTA CLARA RESERVE POLICE FORCES
A. The provisions for use of City of Santa Clara reserve police forces only apply to City of Santa Clara areas. Any proposed use of City of Santa Clara reserve police forces outside of the City of Santa Clara will be subject to approval and conditions of the jurisdictional authority.
B. The Contractor as Secondary Employment permittee shall maintain records of each officer’s hours of work and make those records available for review during business hours upon the request by the Secondary Employment Unit.
C. The Contractor shall indemnify and hold harmless the City of Santa Clara, and all the parties covered by the indemnification provisions of SC-1, “Indemnification,” from any and all damages, costs, losses, and liabilities arising out of the private security services performed by off-duty Santa Clara Police Officers and Reserves for the Contractor.
3.10 PLATING
A. Wherever traffic is permitted over or adjacent to trenches and other depressions, the Contractor shall furnish and maintain steel plating unless other means of protecting the public and the work are accepted by the VTA (and the local jurisdictional authority). Plates shall be secured against movement including shifting and rocking by use of adjustable cleats, shims, and other devices such as anchors and keys. No gaps between plates and other deficiencies hazardous to bicycles shall be allowed; and the existing pavement shall be protected from damage.
B. Steel plating shall have a non-skid surface.
C. Steel plates used for bridging shall extend 12 inches minimum beyond the edges of trenches.
D. Steel plates shall conform to the following minimum thicknesses:
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Trench Width Minimum Plate Thickness 1 ft ½ in 1.5 ft ¾ in 2 ft 7/8 in 3 ft 1 in 4 ft 1 ½ in Note: For spans greater than 4 feet, prepare and submit a structural design as specified under “Submittals” herein.
E. Contractor shall prepare for placement of plates over trench by grinding a relief 12 inches wide on each side of the trench by the thickness of the steel plate so that the surface of the steel plate is level with the adjacent pavement surface.
END OF SECTION
File Date: 02/22/2016 TECHNICAL SPECIFICATION 01 55 26 Traffic Control - 14 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 01 58 00 PROJECT IDENTIFICATION
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes requirements for project identification signs and general construction signs for the Santa Clara Station PUP Extension.
1.02 MEASUREMENT AND PAYMENT
A. Separate measurement or payment will not be made for work required under this Section. All costs in connection with the work specified herein will be considered to be included with the related item of work in the Bid Schedule of the Bid Form, or incidental to the Work.
1.03 PROJECT IDENTIFICATION SIGNS
A. Requirements: provide all posts, braces and mounting hardware and install temporary project identification signs as directed by the VTA. Project identification sign boards will be provided by VTA. Provide all other signs.
B. Location: Locate the signs as indicated or as designated by the VTA. Additional identical signs, as desired and paid for by the Contractor, may be placed at intermediate points if first approved by the VTA. Place no other signs on the right-of-way or within the limits of the jobsite.
1.04 GENERAL CONSTRUCTION SIGNS
A. Requirements: Provide temporary general construction signs and field office identification signs as indicated or required. Provide field office identification signs for both the VTA's field office and the Contractor's field office.
B. Design, Layout, and Size: Design, layout, style of lettering, and colors shall be as shown on the Contract Drawings.
1. General construction signs shall be constructed from a sheet of plywood 4 feet by 8 feet or 3 feet by 6 feet in size, as appropriate for the location, mounted on two posts set in the ground.
2. Field office signs shall be of similar design, 3 feet by 6 feet in size, for wall or post mounting, as appropriate for the location.
C. Location: Locate the signs as indicated or as designated by the VTA.
1.05 CONSTRUCTION AND INSTALLATION
A. Materials: Sign faces shall be constructed of 3/4-inch thick, 5-ply, exterior grade, A-B-faced, Douglas-fir plywood, APA-grade-stamped. The frame shall be nominal 2-by-2 or 2-by-4 stock, either construction- grade Douglas fir or A-grade redwood. Posts shall be 4-by-6 construction-grade Douglas fir, pressure- preservative-treated, 8 to 12 feet long as required for the location.
B. Construction: Plywood signs shall be let into the frame, and the frame corners shall be mitered and screwed together. The sign shall be screwed to two, 2-by-6 Douglas-fir cleats that shall be bolted to the posts with at least two 1/4-inch bolts per post.
C. Installation: Sign posts shall be installed in the ground 3 feet deep, with the top of the sign horizontal, level, and even with the top of the posts, 7 feet minimum above the ground.
D. Painting: Signs shall receive one coat of primer sealer and two base coats of exterior semi-gloss enamel. Generally, letters and logos shall be painted black on a white background. Style of letters shall be Helvetica, unless otherwise indicated.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 58 00 Project Identification - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
E. Maintenance: Keep signs clean and in good repair until Substantial Completion of the Contract.
F. Sign Quantities: Provide two signs.
PART 2 PRODUCTS (Not Used)
PART 3 EXECUTION
3.01 CLOSEOUT
A. Upon completion of the Work, the signs shall be left in place or shall be removed and disposed of off the VTA's property, as determined by the VTA.
END OF SECTION
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 01 58 00 Project Identification - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 01 74 00 CLEANING
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes requirements for maintaining a clean, orderly, hazard-free Worksite and for final cleaning prior to VTA’s final inspection and acceptance of work.
1.02 RELATED SECTIONS
A. SC-6, Contract Data Requirements
B. SC-10, Site Access, Completion Milestones and Specific Construction Requirements
C. SC-51, Technical Submittals List
D. GC-10, Storm Water Pollution Prevention Plan (SWPPP)
E. GC-43, Submittal of Shop Drawings, Product Data and Samples
F. GC-50, Removal of Rejected or Unauthorized Work
G. GC-51, Disposal of Materials
H. GC-53, Cleanup
I. GC-55, Final Inspection and Acceptance of All or a Portion of the Work
J. Section 01 11 00, Summary of Work
K. Section 01 57 00, Temporary Controls
L. Section 01 71 13, Mobilization
M. Section 02 41 19, Selection Structure Demolition
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for conforming to the requirements of this Section involving cleaning shall be considered as included in the contract prices paid for the various items of work involved and no additional compensation will be allowed therefor.
1.04 REFERENCES
A. Refer to Section 01 57 00 – Temporary Controls, for basic mud control and dust abatement requirements.
B. When demolition is involved, refer to Section 02 41 16 – Selection Structure Demolition, as applicable, for additional dust abatement requirements.
1.05 SYSTEM DESCRIPTION
A. Failure to maintain the worksite clean in accordance with the provisions of these specification and requirements of all jurisdictions having authority will be grounds for withholding special monthly payments until corrected to the satisfaction of VTA.
B. Progress Cleaning:
1. Clean the Worksite every workday during the construction of the Contract. Maintain structures, grounds, railroads and other areas of Worksite, including public streets and public and private properties immediately adjacent to Worksite, free from accumulations of waste materials caused
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by construction operations. Place waste materials in metal containers.
2. Remove or secure loose material on open decks and on other exposed surfaces at the end of each workday, or more often, in a manner which will maintain the Worksite hazard-free. Secure material in a manner which will prevent its dislodgment by wind and other forces.
3. Promptly empty waste containers when they become full but in no case less frequently than once a week, and legally dispose of the contents at dumping areas off VTA's property.
4. Control the handling of waste materials. Do not permit materials to be dropped or thrown from structures.
5. Immediately remove spillages of construction-related material from haul routes.
6. Clean only when dust and other contaminants will not precipitate upon newly painted surfaces.
C. Final Cleanup:
1. Inspect interior and exterior surfaces, including concealed spaces, in preparation for completion and acceptance.
2. Remove dirt, dust, litter, corrosion, solvents, discursive paint, stains, and extraneous markings.
3. Remove surplus materials, except those materials intended for maintenance.
4. Remove tools and equipment used in the construction, except that for VTA's property.
5. Remove detachable labels and tags. File them with the manufacturer's specifications for that specific material for VTA's records.
6. Repair damaged materials to the specified finish, or remove and replace.
1.06 SUBMITTALS
A. Submittals’ General Requirements:
1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. Product Data: Submit detailed list of volatile and potential contaminants planned or expected to be present at the job site and how they will be mitigated if spilled.
1.07 QUALITY ASSURANCE
A. Regulatory Requirements: Contractor to comply with requirements of agencies having jurisdiction. Refer to Section 01 11 00, Summary of Work.
1.08 PROJECT/SITE CONDITIONS
A. Safety Requirements: Maintain the Worksite neat, orderly, and hazard-free until final acceptance of the Work in conformance with the local governmental and CAL OSHA requirements. Keep catwalks, underground structures, Worksite walks, public sidewalks, roadways, and streets, along with public and private walkways adjacent to Worksite, free from hazards caused by construction activities. Inspect those facilities regularly for hazardous conditions caused by construction activities.
B. Hazards Control:
1. Store volatile wastes in covered metal containers, and remove those wastes from Worksite daily.
2. If volatile and/or noxious substances are being used in spaces which are not naturally ventilated, provide artificial ventilation.
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3. Hazard controls shall conform to the applicable federal, state and local rules and regulations, including those covering hazardous communications.
C. Access: Maintain the Worksite in such a way as to permit access by others, refer to Section 01 11 00, Summary of Work, and SC-10, Site Access, Completion Milestones and Specific Construction Requirements.
PART 2 PRODUCTS
2.01 CLEANING MATERIALS
A. Utilize the type of cleaning materials recommended by the manufacturer of the surfaces to be cleaned. Products used in this Section shall be selected by the Contractor, subject to approval by VTA.
PART 3 EXECUTION (Not Used)
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 01 74 00 Cleaning - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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SECTION 02 41 16 STRUCTURE DEMOLITION
PART 1 GENERAL
1.01 SECTION INCLUDES
A. This Section includes requirements for constructing the Santa Clara Station PUP Extension in accordance with the designs and details shown on the Plans and these technical specifications, including removal of a portion of existing concrete wall, existing stud wall and portion of existing sheet piling of existing ramp structure at entrance to new PUP.
1.02 RELATED SECTIONS
A. GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. Section 01 35 15, UPRR Coordination and Interface.
C. Section 01 45 30, Structural Quality Control.
D. Section 01 52 00, Construction Facilities.
E. Section 01 57 00, Temporary Controls.
F. Section 01 74 00, Cleaning.
G. Section 01 74 19 Construction Site Management
H. Section 01 74 21, Waste Management.
I. Section 01 78 39, Project Record Documents.
J. Section 02 61 00, Removal and Disposal of Contaminated Soils and Hazardous Waste
K. Section 03 35 00, Concrete Finishing
L. Section 31 11 00, Clearing and Grubbing.
M. Section 31 50 00, Excavation Support and Protection.
1.03 MEASUREMENT AND PAYMENT
A. General: Measurement and payment for structural demolition will be by the unit-price method as determined by the listing of the bid item for structural demolition indicated in the Bid Schedule of the Bid Form.
B. Unit Prices: The unit-price method of measurement and payment will be as follows:
1. Measurement:
a. Concrete wall removal will be measured for payment by the cubic yard of concrete removed.
b. Removal of sheet piles will be measured for payment by the square foot of sheet pile removed.
c. Removal of stud wall will be measured for payment by the square foot of stud wall removed.
d. The above prices and payments shall include full compensation for furnishing all labor, materials, tools, equipment and incidentals, and for doing all the work involved in structural demolition, including temporary shoring, underpinning, excavation, backfill,
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 02 41 16 Structure Demolition - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
salvaging materials not to be reused in the project when salvaging is specified and not otherwise paid for, saw-cutting, removal of expansion and other anchors, repair of concrete surfaces adjacent to structural demolition that will remain exposed, and cleaning of reinforcement that is to be incorporated into new concrete pours, as shown on the Contract Drawings, as specified in these Technical Specifications, and as directed by the VTA.
C. Payment: Structural demolition will be paid for at the Contract unit price for the computed quantities as determined by the measurement method specified in Article 1.03.B.1
1.04 REFERENCES
A. American National Standards Institute (ANSI):
1. ANSI A10.6 Safety Requirements for Demolition Operations
B. State of California, Department of Transportation (Caltrans), Standard Specifications, Section 15, Existing Facilities.
1.05 REGULATORY REQUIREMENTS
A. In addition to the foregoing referenced standards, the regulatory requirements that govern the work of this Section include the following governing codes:
1. California Code of Regulations (CCR), Title 8, Chapter 4, Subchapter 4, Construction Safety Orders.
2. California Code of Regulations (CCR), Title 24, Part 2, California Building Code, 2007, Chapter 33, “Safeguard During Construction.”
1.06 DESCRIPTION
A. Demolition as follows:
1. Remove portion of existing concrete wall, existing stud wall and portion of existing sheet piling of existing ramp structure at entrance to new PUP.
1.07 PERMITS
A. Obtain all special permits and licenses and give all notices required for performance and completion of the structure demolition and removal work, hauling, and disposal of debris.
1.08 SUBMITTALS
A. Demolition Plan: Submit a comprehensive demolition plan, describing the proposed sequence, methods, and equipment for demolition, removal, and disposal of structure(s); include salvage if required.
1. Shop Drawings and Calculations: Include calculations and drawings in plan of all structures to be demolished. Indicate stages or phases of the demolition work.
2. All demolition within the railroad right-of-way shall conform to the demolition guidelines of the railroad involved.
B. Permits: Submit copies of demolition, hauling, and debris disposal permits and notices for record purposes. Include description of proposed haul routes.
C. Private Property Owner's Release: If material demolished and removed from the site will be deposited on private property, submit two copies of written releases not less than 15 days before the start of work. Releases shall absolve the VTA from responsibility in connection with the depositing of material on private property, and shall be signed by the owners of such property on which the material will be
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deposited.
D. Record Documents: Provide copies to the VTA of all reviewed submittals, specified herein, for record purposes in accordance with the requirements of Section 01 78 39 - Project Record Documents.
1.09 SITE CONDITIONS
A. Protection of Persons and Property:
1. Install chain link fencing or approved barriers around the area of demolition work as specified in Section 01 5200- Construction Facilities.
2. Erect and maintain temporary bracing, shoring, lights, barricades, signs, and other measures as necessary to protect the public, workers, and adjoining property from damage from demolition work, all in accordance with applicable codes and regulations.
3. Open depressions and excavations occurring as part of this work shall be barricaded and posted with warning lights when accessible through adjacent property or through public access. Operate warning lights during hours from dusk to dawn each day and as otherwise required.
4. Protect utilities, pavements, and facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by demolition operations.
B. Protection of Utilities:
1. Protect active sewer, water, gas, electric, and other utilities; and drainage and irrigation lines indicated or, when not indicated, found or otherwise made known to the Contractor before or during demolition work. If utility is damaged, immediately notify the utility owner for corrective action.
2. Arrange with and perform work required by utility companies and municipal departments for discontinuance or interruption of utility services due to demolition work.
C. Noise and Dust Abatement: Comply with requirements specified in Section 01 57 00 - Temporary Controls, and the following:
1. Provide continuous noise and dust abatement as required to prevent disturbance and nuisance to the public and workers and to the occupants of adjacent premises and surrounding areas. Dampen or cover areas affected by demolition operations as necessary to prevent dust nuisance.
2. When a certain level of noise is unavoidable because of the nature of the work or equipment involved, and such noise is objectionable to the occupants of adjacent premises, make arrangements with the jurisdictional authorities to perform such work or operate such equipment at the most appropriate time periods of the day.
D. Unknown Conditions:
1. The Contract Drawings and related documents may not represent all surface and subsurface conditions at the site and adjoining areas. The known surface and subsurface conditions are as indicated, and shall be compared with actual conditions before commencement of work.
2. Existing utilities and drainage systems below grade are located from existing documents and from surface facilities such as manholes, valve boxes, area drains, and other such surface fixtures. The Contractor's proposed methods of demolition shall be designed to allow for the possibility that the existing pipe, sewer, utility or other facility are in a location that is three feet from that shown on the Contract Drawings.
3. If existing active services encountered are not indicated or otherwise made known to the Contractor and interfere with the permanent facilities under construction, notify the VTA in writing, requesting instructions on their disposition. Take immediate steps to ensure that the service provided is not interrupted, and do not proceed with the work until written instructions are
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 02 41 16 Structure Demolition - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
received from the VTA.
1.10 QUALITY ASSURANCE AND CONTROL
A. Inspection by City and Other Governing and Regulatory Authorities: Allow the VTA and other governing and regulatory authorities to perform testing and inspection of materials and practices associated with construction within their jurisdiction on the Worksite during business hours for the purpose of ensuring that the Work is in compliance with requirements of the City Code and other local, State and Federal laws and regulations.
B. Contractor Quality Control:
1. Sampling, Testing and Inspection:
a. The Contractor’s approved Independent Testing Agency shall perform sampling, testing, and inspections in accordance with the provisions herein and Section 01 45 30 - Structural Quality Control.
b. Cooperate with and notify the VTA at least 48 hours in advance of sampling, tests and inspections, being performed by the Independent Testing Agency. The VTA may elect to observe these procedures. Provide samples and facilities for inspection to the VTA without extra charge if requested.
c. The Independent Testing Agency shall collect samples of materials for testing in accordance with the provisions outlined herein and as directed by the VTA.
2. Qualifications of the Independent Testing Agency: Refer to Section 01 45 30 - Structural Quality Control.
C. VTA Quality Assurance:
1. The VTA will monitor the implementation of the Contractor’s quality control programs through observation, inspection, sampling and testing in accordance with Section 01 45 30 - Structural Quality Control.
PART 2 PRODUCTS
2.01 MATERIALS
A. Furnish all materials, tools, equipment, devices, appurtenances, facilities, and services as required for performing the demolition and removal work.
B. Materials used for backfill shall conform to the requirements for backfill of Section31 23 42 – Structure Excavation and Backfill.
C. Materials for repair of existing concrete shall conform to the requirements for repairs and finishing materials of Section 03 35 00 Concrete Finishing.
PART 3 EXECUTION
3.01 PRESERVATION OF REFERENCE MARKERS
A. Record the locations and designation of survey markers and monuments affected by the structure demolition. Provide three reference points for each survey marker and monument removed, established by a licensed civil engineer or land surveyor currently licensed to practice surveying in the State of California and according to the Professional Land Surveyor’s Act, Business and Professions Code Section 8771 through 8773.
B. Forward to the VTA a filed Corner Record verifying re-establishment of survey markers and monuments, signed by a licensed civil engineer or land surveyor currently licensed to practice land
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 02 41 16 Structure Demolition - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
surveying in the State of California.
3.02 STRUCTURE DEMOLITION
A. Perform structure demolition and removal work in accordance with the reviewed demolition plan and ANSI A10.6 and the California Code of Regulations, Title 8 and Title 24, as applicable.
B. Structure demolition and removal of bridges, and miscellaneous structures shall also conform to the provisions for bridge removal in Section 15-4, "Bridge Removal" of the Caltrans Standard Specifications and these Technical Specifications.
C. Remove walls and masonry construction to a minimum depth of one foot below existing ground level or 3 feet below finished grade, whichever is lower, in areas where such items do not interfere with new construction.
D. Cap or plug sanitary sewer in accordance with the utility owner's standard details and instructions. Cap and plug pipe and other conduits abandoned due to demolition, with approved type caps and plugs as required by the utility owners.
E. Backfill and compact depressions caused by excavations, demolition, and removal in accordance with applicable requirements of Section 31 23 42 – Structure Excavation and Backfill.
3.03 SALVAGE
A. Items or materials to be salvaged shall be as indicated on the Contract Drawings or specified herein:
1. None
B. Protect metallic coatings on salvaged items. Remove adhering concrete from salvaged items.
C. Repair, or replace with new material, salvaged material damaged or destroyed due to Contractor's negligence, as determined by the VTA.
D. Salvaging shall include the removal, disassembly, preparation, marking, building, packaging, tagging, hauling and stockpiling of salvaged materials to the location designated by the VTA.
3.04 DISPOSAL OF REMOVED MATERIALS AND DEBRIS
A. Dispose of removed materials, waste, trash, and debris in a safe, acceptable manner, in accordance with applicable laws and ordinances and as prescribed by authorities having jurisdiction. Refer to Section 01 74 19 Construction Site Management and Section 01 74 21 Waste Management.
B. Burying of trash and debris on the site will not be permitted. Burning of trash and debris at the site will not be permitted.
C. Remove trash and debris from the site at frequent intervals so that their presence will not delay the progress of the work or cause hazardous conditions for workers and the public.
D. Removed materials, trash, and debris shall become the property of the Contractor and shall be removed from the project site and be disposed of in a legal manner. Location of disposal site and length of haul shall be the Contractor's responsibility.
3.05 REPAIR OF CONCRETE SURFACES
A. Concrete surfaces adjacent to areas of structural demolition that will remain exposed shall be repaired in accordance with Section 03 35 00 Concrete Finishing.
3.06 CLEANUP
A. Provide a clean and orderly site at all times in accordance with Section 01 74 00- Cleaning. END OF SECTION
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 02 41 16 Structure Demolition - 5 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 02 41 16 Structure Demolition - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 02 61 00 REMOVAL AND DISPOSAL OF CONTAMINATED SOILS AND HAZARDOUS WASTE
PART 1 GENERAL
1.01 SUMMARY
A. Section Includes procedures and requirements for:
1. Excavation, collection, or otherwise accumulation of contaminated soils and/or hazardous waste.
2. Transfer, stage, or store such materials.
3. Grading and construction of stockpiling area for contaminated soils, including all necessary liners and miscellaneous materials.
4. Testing and profiling of the contaminated soil and/or hazardous waste prior to removal from the site.
5. Transport and dispose such materials.
1.02 RELATED SECTIONS
A. Division 01, GENERAL REQUIREMENTS, Specification Sections and the following related Contract Documents apply to this section: Drawings, General Conditions, and Special Conditions.
B. Section 01 57 00 Temporary Controls
C. Section 01 57 23, Temporary Storm Water Pollution Control
D. Section 31 23 16, Excavation
E. Section 31 23 43, Structure Excavation and Backfill
1.03 MEASUREMENT AND PAYMENT
A. Unit Prices: If the Schedule of Quantities and Prices indicates unit prices for contaminated soils and hazardous waste, the unit-price method of measurement and payment will be in accordance with the following requirements.
1. Measurement:
a. The quantities for payment will be determined from limits shown on the Contract Drawings for excavation and structure excavation or directed by the VTA.
b. No deduction in contaminated soils and hazardous waste pay quantities will be made where the Contractor does not elect to excavate material which is outside the limits of the actual structure but within the limits shown on the Contract Drawings or specified or directed by the VTA.
c. No compensation will be made for the removal and disposal of material which may come into an excavation from outside the designated limits or for the removal and disposal of material resulting from swell caused by the driving of piles in an excavation, and these quantities will not be included in the quantities of contaminated soils and hazardous waste to be paid for.
2. Payment:
a. The Contract prices paid per cubic yard for contaminated soils and hazardous waste shown in the Schedule of Quantities and prices, shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in proper handling, transportation, and disposal of the identified contaminated soil and waste to be
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
removed and disposed, including grading and construction of the necessary stockpiling area for contaminated soils., as shown on the Contract Drawings, as specified in these Technical Specifications, and as directed by the VTA. The contract unit price shall also include obtaining any permits and/or fees associated with the soil transportation and disposal, and any soil profiling of the contaminated soil prior to removal from the site required by the disposal facility and no additional compensation will be made therefor.
b. Full compensation for sampling, testing and inspections required by these Technical Specifications will be considered as included in the Contract prices paid for the contaminated soils and hazardous waste involved and no additional compensation will be allowed therefor.
c. Full compensation for additional excavation and the resulting contaminated soils and hazardous waste required to achieve stable vertical or horizontal surfaces where required by these Technical Specifications shall be considered as included in the Contract price for contaminated soils and hazardous waste and no additional compensation will be allowed therefor.
d. Disposal of excess soils that are determined to be Class 3 soils will be to any landfill accepting Class 3 soils within 100 miles of the project site. No additional payment will be made for disposal of Class 3 soils.
1.04 REFERENCES
A. Bay Area Air Quality Management District (BAAQMD), Rules and Regulations:
http://www.baaqmd.gov/?sc_itemid=D39A3015-453E-4A0D-9C76-6F7F4DA5AED5
B. Bay Area Air Quality Management District (BAAQMD), Regulation 8, Rule 40 “Aeration of Contaminated Soil and Removal of Underground Storage Tanks”: http://www.baaqmd.gov/~/media/Files/Planning%20and%20Research/Rules%20and%20Regs/reg%20 08/rg0840.ashx
C. California Code of Regulations (CCR), Title 8, Division 1, Chapter 4 Division of Industrial Safety, Subchapter 7 General Industry Safety Orders, Group 16 Control of Hazardous Substances, Article 109 Hazardous Substances and Processes, 5192 Hazardous Waste Operations and Emergency Response http://www.dir.ca.gov/title8/5192.html
D. California Code of Regulations (CCR), Title 8, Subchapter 4. Construction Safety Orders, Article 6. Excavation, Section 1541 http://www.dir.ca.gov/title8/1541_1.html
E. California Code of Regulations (CCR), Title 22, Division 4.5 Environmental Health Standards for the Management of Hazardous Waste http://weblinks.westlaw.com/toc/default.aspx?Abbr=ca%2Dadc&Action=ExpandTree&AP=I77C6B3 D0D4BA11DE8879F88E8B0DAAAE&ItemKey=I77C6B3D0D4BA11DE8879F88E8B0DAAAE&R P=%2Ftoc%2Fdefault%2Ewl&Service=TOC&RS=WEBL11.07&VR=2.0&SPa=CCR- 1000&pbc=DA010192&fragment#I77C6B3D0D4BA11DE8879F88E8B0DAAAE
F. California Safety Code, Division 20 Miscellaneous Health and Safety Provision, Chapter 6.5 Hazardous Waste Control http://www.leginfo.ca.gov/.html/hsc_table_of_contents.html
G. California Stormwater Quality Association – Stormwater Best Management Practice Handbook, January 2011 http://www.cabmphandbooks.com/
H. Occupational Safety and Health Standards (OSHA), Code of Federal Regulations (CFR), Part 24 Procedures for the Handling of Retaliation Complaints Under Federal Employee Protection Statutes.
1. 1910.120 Hazardous waste operations and emergency response, including Appendix A thru E http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=standards&p_id=9765
2. 1926.650 through 653 Excavations Scope, Applications, Protection, etc.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10774
I. U.S. Environmental Protection Agency (EPA) - Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846) http://www.epa.gov/epawaste/hazard/testmethods/index.htm
J. United States Code (USC), Chapter 42 The Resource Conservation and Recovery Act (RCRA) http://www.epa.gov/lawsregs/laws/rcra.html
K. Site Characterization Report, Santa Clara Pedestrian Underpass, VTA project C827, Burns & McDonnell, April 18, 2016. See Appendix H.
1.05 DEFINITIONS
A. PEL – Permissible Exposure Limits set and enforced by OSHA to protect workers against the health effects of exposure to hazardous substances. PELs are regulatory limits on the amount or concentration of a substance in the air. http://www.osha.gov/SLTC/pel/
B. TSD – Treatment, Storage and Disposable sites regulated by EPA through the Resource Conservation and Recovery Act (RCRA) http://www.dtsc.ca.gov/HazardousWaste/index.cfm#Treatment,_Storage_and_Disposal_Facility_Infor mation
1.06 SYSTEM DESCRIPTION
A. Excavation: 1. Excavation shall be conducted in accordance with the requirements set forth in Section 31 23 16, Excavation and Section 31 23 43, Structure Excavation and Backfill
2. Excavate by methods that will permit observation of soils for the purpose of identifying, screening, testing, and segregating soils as necessary prior to off-site removal.
3. Excavate beyond the limits of proposed improvements when directed by VTA to remove localized areas of stained soil which indicate visual, olfactory, or field screening evidence of contamination.
4. Conduct excavation to prevent cross-contamination of soil group classifications.
5. Soil shall be excavated to a depth and extent specified in the Contract Drawings, at which point samples will be taken in the excavation for analysis. If further excavation is required, Contractor shall proceed as directed by the VTA.
6. If applicable, slab on grade concrete, curbs and walkways, and asphalt paving shall be sawcut prior to excavation.
7. Segregate oversized and/or other deleterious materials from excavated soils prior to off-site removal as necessary to meet disposal facility acceptance criteria or as directed by the Project Manager. Segregation may consist of hand labor or mechanical screeners.
8. It is required that for all or any site excavations into which a person is required to descend, Contractor shall comply with provisions of 8 CCR, Subchapter 4, Article 6, Section 1541, requirements for shoring and sloping as a priority for employee protection.
9. Contractor shall control dust levels on-site to prevent dust from this project moving about the property or to adjacent properties. Refer to Section 01 57 00 Temporary Controls.
B. Accumulation/Staging/Stockpiling:
1. All contaminated soil and/or hazardous waste shall be stockpiled and tested prior to removal from the site.
2. Excavated soil from areas of different contamination shall be stored on separate and identifiable parts of the stockpile so that soils may be segregated after testing. The sections of the stockpile
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
shall be labeled with appropriate signage as per the approved Materials Handling Plan, including but not limited to the quantity excavated soil and original location of the soils.
3. The material shall be promptly covered in the event of rain unless the stockpile area is roofed sufficiently to prevent rain intrusion.
4. The total height of the stockpile shall not exceed eight (8) feet above grade. The stockpile shall have its tallest portion near the middle of the stockpile and shall be sloped to the outside to allow for covering of the stockpile with a liner, and for efficient storm runoff.
5. Provide exclusion fencing around contaminated soil and/or hazardous waste when stockpiling material on site.
C. Testing: Profiling of all contaminated material after stockpiling using sampling and analytical results performed by a certified analytical lab retained by the Contractor.
D. Soil Removal and Disposal:
1. The Contractor will be responsible for handling, re-handling, loading, transporting, and legal off- site removal of all excavated soils and materials to approved facilities.
2. The Contractor will be responsible for the scheduling and coordination of all shipments of the soils to the approved facilities. The Contractor shall coordinate directly with the designated approved facility to ensure that the soils are received by the facility on schedule and that there will be no cause for delay in Work.
3. The Contractor is responsible to ensure that the trucks gross weight meet DOT requirements and the requirements of the receiving facility.
4. No soil shall be removed from the site without prior approval from the VTA.
5. The excavated soil that is stored on the site and is not to be aerated or used as construction fill shall be removed after excavation is declared complete by the VTA. Copy of all records including the hazardous waste manifests (if required) from the hauling trucks and the disposal site shall be provided to VTA.
6. If soil aeration is required, obtain all necessary permits from BAAQMD prior to starting the operation; refer to Regulation 8 Organic Compounds, Rule 40 Aeration of Contaminated Soil and Removal of Underground Storage Tanks http://www.baaqmd.gov/~/media/Files/Planning%20and%20Research/Rules%20and%20Regs/reg %2008/rg0840.ashx
7. The exterior of all vehicles leaving the site must be cleaned sufficiently to prevent the tracking of material from the site. Visible evidence of contamination will require additional engineering controls.
a. When requested by VTA, the Contractor shall install, operate, maintain and remove a wheel wash at each location where construction vehicles access and depart the site (Refer to NS-8 and WM-8 requirements in California Stormwater BMP Handbook. The location shall be proposed by the Contractor and approved by VTA.
8. Contaminated soil shall be transported by an EPA registered waste hauler to a licensed Treatment- Storage and Disposal (TSD) facility or landfill. The vehicles used for transporting the soil shall conform to Section 1.8 of this specification. Any spillage shall be immediately cleaned by the Contractor.
E. Respiratory Protection:
1. If at any time the airborne levels of contaminant(s) approach the Permissible Exposure Limit (PEL), or the Engineer believes that the level might approach the PEL, the Contractor shall
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
provide the necessary respirator equipment to its employees. The type of respirator equipment used shall be approved by the Engineer. All personnel in the work area must be trained in the use of the respirator and must wear it. Contractor must provide evidence of each employee's respirator training prior to employee working in an area requiring a respirator.
1.07 SYSTEM DESCRIPTION
A. Submittals’ General Requirements:
1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. Contractor’s Organization Structure/Chart with the name and experience of proposed Supervisors and Foremen.
C. Materials Handling Plan: Contractor’s detailed materials tracking system that will allow all contaminated soils and/or hazardous waste to be tracked between excavation, stockpiling, and final disposition as described in this section.
D. Medical Surveillance Program
1. Evidence of employee respirator training, first aid, and CPR for all Contractor Team entering the site.
2. Training and Medical Surveillance Records for General Superintendent, supervisors and foremen; for individual workers submit report from Medical Examination (Submit a copy of Physician’s Written Opinion as defined by 29 CFR 1926.1101(m)(4) for medical examination conducted within last 12 months as part of compliance with OSHA medial surveillance requirements for each worker who is to enter the Work Area.)
E. Contractor’s Standard Operating Procedures for Safety and Health; description of the necessary interface between general program and site specific activities.
F. Emergency Response Work Plan to be adhered to when response is needed in a situation immediately dangerous to human life and the environment.
G. Site Specific Health and Safety Plan. The Site Specific Health and Safety Plan must conform to the requirements of the Occupational Safety and Health Administration 29 CFR 1910.120(i)(2). Site Specific Health and Safety Plan shall be signed by Certified Industrial Hygienist. Contractor is to prepare and submit an addendum as necessary for each site specific hazards and emergency response locations of medical facilities.
H. A detailed equipment list to be used
I. Level of respiratory protection intended for each operation required for the project. Manufacturer Data and Instructions for the type of respirator intended to be used.
J. MSDS for all chemicals to be used for the Work.
K. BAAQMD permit is required if soils with potential volatile hydrocarbons are to be aerated; refer to requirements in 1.06.D.6.
L. Quality Assurance/Control Submittals
1. Test Reports: Contractor shall submit profile documents including tests of all wastes, contaminated equipment, water and/or soil as required by the disposal facility.
2. Certificates:
a. Hazardous Waste Operations and Emergency Response Training (HAZWOPER)
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 5 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
certificates for all workers
b. Name and Certification of analytical lab for OSHA monitoring
1.08 QUALITY ASSURANCE
A. Refer to additional requirements included in Section SC-33 of VTA’s Special Conditions, Modifications to General Conditions, GC-47 Quality Assurance.
B. Qualifications: Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section. Contractor shall include a list of assigned workmen with the Contractor Quality Management Plan along with their training certificates necessary for the performance of their work.
C. Contractor shall ensure all workers have current and unexpired 40-Hour Hazardous Waste Operations and Emergency Response Training (HAZWOPER) certificate during the duration of the contract work.
D. Regulatory Requirements: In addition to complying with pertinent regulations of governmental agencies having jurisdiction, comply with pertinent provisions of the federal Resource Conservation and Recovery Act (RCRA) http://epw.senate.gov/rcra.pdf ; Section 5192 of Title 8, of the California Code of Regulations; and Chapter 6.5, Division 20 of the California Health and Safety Code; and 29 CFR 1910.120, and 29 CFR 1926.650 through 1926.653.
E. Sampling and testing protocol to comply with SW-846 and be performed by an analytical laboratory certified by the State of California.
F. VTA will monitor the Contractor’s activities associated with the Work of this Section. This monitoring will include, but not be limited to:
1. Observing and screening excavated soils as necessary to confirm that their quality is consistent with the findings of the pre-characterization program;
2. Establishing requirements for stockpiling, segregating, and handling if the quality of the excavated soils is not consistent with the pre-characterization program;
3. Reviewing requests from Contractor-proposed off-site disposal, reuse, recycling, and treatment facilities for additional chemical testing; and
4. Verifying that the appropriate paperwork accompanies each load of excavated soils and materials that are transported from the site.
G. The Contractor shall assist VTA in collection of soil samples for screening and observation purposes at no additional cost to VTA.
1.09 DELIVERY, STORAGE AND HANDLING
A. Handling of Contaminated Soils and Hazardous Waste shall comply with the approved Material Handling Plan and the following:
1. Contractor shall adhere to provisions of, and take the precautions specified in, the Storm Water Pollution Prevention Plan (SWPPP).
2. Any spillage from the wastes caused by action of the Contractor, on or off-site, shall be immediately cleaned up by the Contractor to standards acceptable to the regulatory agency directly responsible for overseeing the cleanup.
3. All vehicles used to haul hazardous waste from a site shall display evidence of proper Department of Health Services (DOHS) and Department of Transportation (DOT) registration as a hazardous waste hauling vehicle. Bed of said vehicles to be lined with plastic a minimum of 10 mil thick.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
4. The hazardous waste shall be transported by an EPA registered waste hauler to a licensed TSD facility, licensed recycling facility, or licensed waste incineration facility. All records, including but not limited to the hazardous waste manifests, shall be provided to the VTA. Applicable taxes shall be paid by Contractor at the time of disposal.
5. Workmen removing hazardous waste shall be certified in Hazardous Materials Handling as specified by SARA, Title III, and in accordance with 29 CFR 1910.120 and Section 5192 of Title 8, of the California Code of Regulations, and any other applicable local, regional, state or federal regulations. Protective clothing and equipment shall be provided by Contractor.
1.10 PROJECT/SITE CONDITIONS
A. Project/Site Environmental Conditions: refer to Appendix H, Hazardous Materials Report.
1.11 OWNER INSTRUCTIONS
A. Coordination with Station Operation:
1. Passenger service will be in full operation at the station during the duration of this Contract. VTA and other station and rail employees, workers, subcontractors, and passengers must be made aware that hazardous material is present on the site. Protective equipment or clothing shall be provided to the workers and subcontractors if deemed necessary by the County Health Department, or any other regulatory entity having jurisdiction; or if requested by individual workers.
2. All activities shall be coordinated so they interfere minimally with other work proceeding. VTA shall decide which activity has precedence if such interference is likely.
PART 2 PRODUCTS
2.01 STOCKPILE/CONTAINMENT OF SOIL MATERIALS
A. Synthetic Liner – Cross-linked or high-density polyethylene, 0.15 mm (6 mil) to 0.5 mm (20 mil)
B. The polyethylene shall be manufactured of new, first quality product designed and manufactured specifically for the intended use and have the following properties:
1. The material shall be 3 ply polyethylene reinforced with a nonwoven grid of high strength nylon cord.
2. The material shall be U.V. resistant (black in color) and cold cracked resistant to 4.4 °C (40 degrees F.)
3. The material shall be manufactured in a minimum 3.6 m (12 foot) seamless width. Labels on the rolls shall identify the thickness, length, width, and manufacturer’s mark number.
C. K-rail concrete barriers shall be provided for definition of work area and containment of stockpiles (if necessary).
D. Hay bales and silt fence shall be placed around the work area and containment of stockpiles (if necessary) to minimize soil runoff from the stockpile-area.
E. Danger signs shall be posted on barriers or posts used to contain and segregate contaminated soil and/or hazardous waste
PART 3 EXECUTION
3.01 EXAMINATION
A. Site Verification of Conditions: Examine the areas and conditions under which work of this Section
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 7 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
will be performed. Inform VTA immediately of any discrepancies between the field conditions and the Contract Documents. Correct conditions detrimental to timely and proper completion of the Work. Do not proceed until unsatisfactory conditions are corrected.
3.02 PREPARATION
A. Surface Preparation:
1. Clear the stockpile or soil staging area of sharp sticks, large rocks, or other protrusions which may potentially puncture the liner.
2. Grade the site to a 1% slope if the stockpile is larger than 100 square yards.
3. Provide fencing, barricades and signs to protect the stockpile area from vehicular traffic encroachment.
3.03 CONSTRUCTION
A. Construct the stockpile area with containment berms surrounding the stockpile in accordance with the approved Storm Water Pollution Prevention Plan (SWPPP) Best Management Practices (BMPs) for stockpile management (WM-3 & WM-7).
B. Install a synthetic liner of cross-linked polyethylene or high-density polyethylene. The liner shall be a minimum of 20 mil thick. The liner shall be one continuous sheet. If more than one sheet is to be used, the stockpile area must first be graded and sloped, and the sheets layered with the lowest elevation sheet placed first, cross-wise to the slope of the containment area. Subsequent layers shall be placed above the first and overlapping the previous sheet by at least two (2) feet, and be secured together top and bottom. Sheets shall be secured to each other at intervals of no more than five (5) feet. The liner shall extend over and past the containment berm on all sides by at least two (2) feet. The ends of each liner shall be secured to prevent the liner from shifting.
C. Provide anchoring for the stockpile cover. The edges of the stockpile shall be secured with weighted materials (tires, lumber, etc.) at intervals of no more than ten (10) feet. The central part of the stockpile shall be secured with weighted materials at intervals of no less than 20 feet.
D. Place the contaminated soil and/or hazardous waste inside the stockpile area as described:
1. Construct an earthen ramp with clean native soil to the top of the containment berm above the portion of the stockpile with the lowest elevation.
2. Initially the dump trucks or loaders will proceed to the top of the ramp and dump their contents within the lined and bermed area. No vehicles are to drive directly upon the liner.
3. The soil maybe spread using a “Bobcat” or other small backhoe/loader by moving dirt from the top of the pile.
4. Care should be taken at all times to protect the integrity of the liner. Vehicles may drive upon the soil in the containment after 20 inches or more have been placed on the liner.
E. Excavation, stockpiling and separate characterization of soils at boring B8 from ground surface to 5 feet below ground surface per the Site Characterization Report, Santa Clara Pedestrian Underpass, VTA project C827, Burns & McDonnell, April 18, 2016. See Appendix H
3.04 FIELD QUALITY CONTROL
A. Inspection: Contractor shall arrange for all inspections from all necessary local, regional, state, and federal agencies. These agencies include, but are not limited to, County Health Department, County Fire Marshal, and local fire and building departments.
3.05 PROTECTION
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A. The stockpile and/or hazardous material accumulation area shall be cordoned off by the Contractor prior to beginning work to prevent workers from unknowingly coming in contact with contaminated material.
B. Temporary High Visibility Fencing shall be erected at the end of each day around stockpiles and hazardous material accumulation areas.
C. Any open excavation shall be surrounded by temporary fencing or barriers, or covered by trench plating at the end of each day.
D. The areas may be fenced separately. Fencing shall be at least six (6) feet high.
E. Any gates in the temporary fencing shall be securely padlocked at the end of each day.
F. Ensure danger signs are visibly posted around the fence.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste - 9 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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SECTION 05 12 00 STRUCTURAL STEEL & MISCELLANEOUS METALS
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes the requirements for furnishing, fabricating, and installing miscellaneous metal complete in place for the Santa Clara Station PUP Extension.
B. Not Used.
C. There is no structural steel for this project.
D. All steel components furnished that is shown on Santa Clara Station PUP Extension plans and not otherwise paid for shall be miscellaneous metal.
1.02 REFERENCED STANDARDS
A. American Institute of Steel Construction (AISC):
1. AISC303 Code of Standard Practice for Steel Buildings and Bridges.
2. S201 AISC Certification Program for Structural Steel Fabricators, Standard for Steel Building Structures
3. S205 AISC Certification Program for Steel Bridge Fabricators, Standard for Steel Bridges
4. S329 Specification for Structural Joints Using ASTM A325and A490 Bolts.
5. AISC 360 Specification for Structural Steel Buildings, with Commentary.
B. American Society for Testing and Materials (ASTM):
1. A36/A36M Standard Specification for Carbon Structural Steel.
2. A53/A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.
3. A193/A193M Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service.
4. A307 Standard Specification for Carbon Steel Bolts, 60 000 PSI Tensile Strength.
5. A325 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Maximum Tensile Strength.
6. A328/A328M Standard Specification for Steel Sheet Piling.
7. A500 Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.
8. A501 Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing.
9. A572/A572M Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel.
10. A615/A615M Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 05 12 00 Structural Steel and Miscellaneous Metals - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
11. A706/A706M Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement.
12. A722/A722M Standard Specification for Uncoated High-Strength Steel Bars for Prestressing Concrete.
13. A780 Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.
14. B633 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel.
15. D1785 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120.
C. American Welding Society (AWS):
1. D1.1 Structural Welding Code - Steel.
2. D1.5 Bridge Welding Code.
3. QC 3 Standard for AWS Certified Welders.
D. State of California, Department of Transportation (Caltrans), Standard Specifications:
1. Section 55 Steel Structures.
2. Section 75 Miscellaneous Metal.
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in installing structural steel and miscellaneous metals as shown on the Drawings, as specified in these technical specifications, and as directed by VTA shall be considered as included in the contract Lump Sum price for Miscellaneous Metals (Tunnel Closure) as shown in the Schedule of Quantities and Prices, and no separate payment will be made thereof.
1.04 SUBMITTALS
A. General:
1. Submittals for structural steel and miscellaneous metals shall be made in accordance with the provisions in Section GC-43, "Submittal of Shop Drawings, Product Data and Samples,” and these technical specifications.
2. The Contractor shall submit the following :
a. Not Used
b. Miscellaneous Metals
1) Shop Drawings
2) Mill Certificates
3) Certificate of Compliance
4) Laboratory Test Results
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 05 12 00 Structural Steel and Miscellaneous Metals - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3. All submittals shall be made to VTA for review. The Contractor shall not order materials, begin fabrication, or begin construction of work related to the submittal, until the submittal has been reviewed and stamped by VTA with a shop drawing stamp marked “No Exception Taken” or "Make Corrections Noted" and returned to the Contractor by VTA.
B. Shop Drawings:
1. Shop drawings for steel fabrications shall show details of members, including connections, sizes, spacing of bolts and welds. They shall show the marking and position of each member, erection plans and the limits of paint and galvanizing applications. Complete anchor bolts setting plans for the execution of the work shall be submitted.
2. Shop drawings and calculations for temporary shoring and bracing shall be submitted for review. The shop drawings shall show layouts, size of members and connection details. Calculations shall show all stresses in members and connections, from dead, live and lateral loads in accordance with the requirements of the California Building Code current governing edition. Shop drawings and calculations for temporary shoring and bracing shall be stamped and signed by Civil Engineer registered in the State of California.
C. Mill Certificates:
1. The Contractor shall provide mill certificates for each grade of steel for each heat to be used on project.
2. Mill certificates shall include name of mill, date of rolling, date of shipping, ultimate tensile strength, yield strength, and percent of elongation.
3. Mill certificates shall be furnished with each lot of material shipped to the site and shall be signed by the Contractor which will certify that all structural steel materials installed comply with specified requirements.
4. When mill certificates cannot be provided, the Contractor shall hire a professional testing laboratory to verify compliance of each type of material to be used and provide laboratory test reports. The cost of testing shall be paid for by the Contractor.
5. Weld electrode manufacturer's certificate of compliance shall be submitted for each electrode type being used.
D. Laboratory Test Reports:
1. Laboratory test reports shall show the name of testing agency, date of testing, types of tests performed and shall be signed by a registered Civil Engineer in the State of California.
2. When required by other portions of these specifications, laboratory test reports shall be submitted for each type of steel for each heat to show compliance with appropriate ASTM Standards and these technical specifications.
1.05 QUALITY ASSURANCE
A. Codes and Standards:
1. Comply with all Federal, State, and local codes and safety regulations. Fabrication, priming, and erection of structural steel and miscellaneous metal shall comply with the applicable provisions of AISC 303, AISC S329, and AISC 360, except where more stringent requirements are shown or specified.
2. Welding shall be performed in accordance with AWS D1.1.
B. Sampling, Testing, and Inspection:
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 05 12 00 Structural Steel and Miscellaneous Metals - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1. VTA will perform sampling, testing, and inspections in accordance with the provisions of the Standard Specifications and these technical specifications. Refer to Paragraph 3.03, "Field Quality Control," of this Section.
2. Contractor:
a. The Contractor shall cooperate with and notify VTA at least 48 hours in advance of work to be performed which requires inspection.
b. The Contractor shall identify each lot of fabricated steel to be shipped to the site by assigning an individual lot number that identifies steel by heat number and shall be tagged in a manner that each lot can be accurately identified at the job site.
c. The Contractor shall remove all unidentified structural steel, miscellaneous metal and anchorage assemblies from the site.
d. Welding Quality Control: The Contractor will develop and implement a Welding Quality Control Program in accordance with the provisions of Section 01 42 50, "Welding Quality Control," of these technical specifications.
3. VTA will perform quality assurance inspections at the fabricator's shop in accordance with the provisions of Section 01 42 50, "Welding Quality Control," of these technical specifications.
4. The Contractor shall perform Quality Control of Welding in accordance with the provisions of Section 01 42 50, “Welding Quality Control,” of these Technical Specifications.
PART 2 PRODUCTS
2.01 MATERIALS
A. Structural Steel and Miscellaneous Metal: Structural steel and miscellaneous metal shall be new and conform to ASTM A709/A709M, Grade 36 unless specified elsewhere in these technical specifications.
B. Arc-Welding Electrodes: Arc-welding electrodes shall be E70 series electrodes for ASTM A36/A36M, ASTM A500, ASTM A501, and ASTM A53/A53M material; E80 Series for ASTM A706/A706M reinforcing steel; and E90 series for ASTM A615/A615M reinforcing steel. Electrodes shall be as recommended by their manufacturers for the positions and conditions of actual use. Weld metal toughness shall be reported on the electrode manufacturer's certificate of compliance. All electrodes shall be low hydrogen with a minimum CVN value of 27 kN·m at -7C. Exceptions: Metal deck welding, stair and handrail welding, light gage steel welding.
C. Machine Bolts: Machine bolts (MB) shall conform to ASTM A307, manufactured to American Standard Bolt and Nut dimensions with "Free Fit - Class 2" threads. All unfinished bolts shall have an approved lock washer under nut.
D. All metal parts of anchorage devices shall be fabricated from steel, except iron castings for cast-in- place inserts shall be malleable iron or ductile iron.
E. All metal parts of anchorage devices, except mechanical expansion anchors and iron castings for cast- in-place inserts, shall be hot-dip or mechanically galvanized. Mechanical expansion anchors may be hot-dip or mechanically galvanized, made from stainless steel, or coated with electrodeposited zinc conforming to ASTM B633. Iron castings shall be mechanically galvanized.
2.02 FABRICATION
A. Welding:
1. Welding shall be by operators who are qualified by test in accordance with AWS QC 3 to perform type of work required.
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2. Tack welds, arc-arc gouging and flame cutting shall not be performed without adequate preheat or incorporation into the final weld.
3. The filler metal manufacturer's published recommendations shall be the basis for determining the allowable range of essential variables for the prequalified WPS.
PART 3 EXECUTION
3.01 WORKMANSHIP
A. The workmanship shall be in accordance with AISC 303 and AISC 360, and shall be of the highest quality found in contemporary structural work.
3.02 ERECTION
A. The Contractor will be responsible to erect the complete structural frame plumb and true to line and grade, in conformance with the AISC 303.
B. The Contractor shall provide temporary struts, ties and additional bracing of steel structures as required to adequately and safely support any or all loads imposed upon the structure during construction.
3.03 FIELD QUALITY CONTROL
A. VTA Inspections: VTA will perform the following inspection:
1. Miscellaneous metal placement. Inspection of items embedded in concrete will be inspected prior to any concrete placement.
END OF SECTION
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SECTION 07 13 00 MEMBRANE WATERPROOFING
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes requirements for membrane waterproofing for the Santa Clara Station PUP Extension, including exposed side membrane waterproofing for installation on cured concrete and blindside membrane waterproofing where concrete is placed against the pre-installed membrane and membrane protection and ballast mat.
1.02 RELATED SECTIONS
A. Section 03 30 00 - Cast-in-Place Concrete.
B. Section 03 41 00 – Structural Precast Concrete.
1.03 REFERENCES
A. American Railway Engineering & Maintenance of Way Association (AREMA) Specification Chapter 8 Part 29 - Waterproofing.
B. ACI 302.1R.17 – Guide for Concrete Floor and Slab Construction.
C. ASTM C990: Joints for Concrete Pipe, Manholes, and Manufactured Box Sections Using Preformed Flexible Joint Sealants.
D. ASTM D146: Standard Test Methods for Sampling and Testing Bitumen-Saturated Felts and Fabrics Used in Roofing and Waterproofing.
E. ASTM D412: Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension.
F. ASTM D570: Standard Test Method for Water Absorption of Plastics.
G. ASTM D882: Standard Test Method for Tensile Properties of Thin Plastic Sheeting.
H. ASTM D903: Standard Test Method for Peel or Stripping Strength of Adhesive Bonds.
I. ASTM D5385: Standard Test Method for Hydrostatic Pressure Resistance of Waterproofing Membranes.
J. ASTM E96-00e1 (Method B): Standard Test Methods for Water Vapor Transmission of Materials.
K. ASTM E154-99: Standard Test Methods for Water Vapor Retarders Used in Contact with Earth Under Concrete Slabs, on Walls, or as Ground Cover.
L. ASTM D1970-01: Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.
M. ASTM F2130: Standard Test Method for Measuring Repellency, Retention, and Penetration of Liquid Pesticide Formulation Through Protective Clothing Materials.
1.04 MEASUREMENT AND PAYMENT
A. General: Measurement and payment for membrane waterproofing will be either by the lump-sum method or by the unit-price method as determined by the listing of the various bid items for membrane waterproofing indicated in the Bid Schedule of the Bid Form.
B. Lump Sum: If the Bid Schedule indicates a lump sum for membrane waterproofing, the lump-sum method of measurement and payment will be in accordance with Section 01 20 00 - Price and Payment
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 07 13 00 Membrane Waterproofing - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
Procedures, Article 1.03.
C. Unit Prices: If the Bid Schedule indicates a unit price for membrane waterproofing, the unit-price method of measurement and payment will be as follows:
1. Measurement:
a. Membrane waterproofing will be measured for payment by the square yard (square) or square foot complete in place.
b. Adhesives, tape, gaskets, expansion joints, protection board, ballast mat and accessories will not be measured separately for payment; such items will be considered incidental to the membrane waterproofing work and included in the measurement specified above.
2. Payment: Membrane waterproofing will be paid for at the Contract unit price for the computed quantities as determined by the measurement method specified in Article 1.04.C.1
1.05 SUBMITTALS
A. Comply with Section 01 33 00 - Submittal Procedures.
B. Product Data:
1. Submit manufacturer's product data and detailed installation instructions for the types of membrane waterproofing, gaskets and protection board required indicating special procedures and perimeter conditions requiring special attention, including preparation instructions for existing surfaces. Submit manufacturer’s information on materials; application procedures; details of laps, joints, penetrations, seals, corner reinforcement, and similar items; requirements for substrate preparation, temperature and humidity; and other items required for the successful completion of work.
2. Submit manufacturer’s product data and detailed installation instructions for ballast mat.
C. Shop Drawings:
1. Submit drawings for the types of waterproofing systems.
2. Submit drawings that show all details of the membrane waterproofing system, including gaskets, protection boards and ballast mat. The details shall be in accordance with the manufacturer’s recommendations for each projection, opening, corner, and termination. The drawings shall include a list of all materials and a description of the procedures to be followed during installation.
D. Samples: Submit samples of waterproofing and auxiliary materials mount on plywood and unmounted samples of protection boards and ballast mat.
E. Manufacturer's Certification: At completion of the installation, submit written certification, signed by the manufacturer or its authorized representative, that the materials used in the waterproofing work were in accordance with these Specifications, and that they were installed in accordance with the material manufacturer's installation instructions and recommendations.
F. Manufacturer’s Certification/Approval from waterproofing manufacturer.
1.06 QUALITY ASSURANCE
A. Membrane waterproofing system shall be installed by an applicator/installer skilled and experienced in the type of work involved. Applicator shall be approved by the manufacturer who furnishes the materials and shall have a minimum of 5 years documented experience in the successful and satisfactory application of the type specified.
B. The Contractor shall make necessary arrangements with the manufacturer of the materials to be installed to provide on-site consultation and inspection service to assure the correct installation of the membrane waterproofing.
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C. The Membrane waterproofing system manufacturer's representative shall be present at the time any phase of the work is performed. Membrane waterproofing shall be applied only over substrate surfaces previously approved by the manufacturer's representative. Manufacturer’s representative shall inspect and approve the membrane waterproofing installation and shall provide field services.
D. Maintain a record of the batch numbers of all materials supplied for this project.
1.07 GUARANTEE
A. In addition to the guaranty requirements specified in General Conditions Article GC-73, membrane waterproofing system. shall be guaranteed against leakage, defective materials and defective installation of the completed waterproofing work. Any such defects or leakage occurring during the period of the guaranty shall be promptly and completely corrected, including all affected work, at no additional cost to the VTA.
B. Said guaranty shall be in effect for a period of five years from the date of Certificate of Completion or Substantial Completion issued by the VTA. The guaranty shall be signed by the waterproofing applicator or installer and countersigned by the Contractor, and shall be submitted to the VTA as specified in Section 01 77 00 - Closeout Procedures.
1.08 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly identifying product name and manufacturer.
B. Store materials in a clean dry area in accordance with manufacturer's instructions.
C. Store adhesives and primers at temperatures of 40oF (5oC) and above to facilitate handling, or as recommended by the manufacturer.
D. Store membrane cartons on pallets.
E. Do not store at temperatures above 90oF (32oC) for extended periods, or as recommended by the manufacturer.
F. Keep away from sparks and flames.
G. Completely cover when stored outside. Protect from rain. Protect rolls from direct sunlight until ready for use.
H. Protect materials during handling and application to prevent damage or contamination.
1.09 ENVIRONMENTAL REQUIREMENTS
A. Do not apply membrane when air or surface temperatures are below 40oF (4oC).
B. Do not apply to frozen concrete.
C. Comply with all manufacturer recommendations.
PART 2 PRODUCTS
2.01 MATERIALS
A. Exposed Side Application Waterproofing Membrane: Polymeric waterproofing membrane protected by release paper on cross-laminated polyethylene carrier film with exposed polymeric membrane strips on both sides protected by pull-off release strips.
1. Performance Based Specification: Waterproofing membrane shall have the following characteristics:
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a. Compliance: AREMA Specification Chapter 9 Part 29 - Waterproofing.
b. Thickness:
1) Carrier Film: 4 mils.
2) Polymeric Membrane: 56 mils.
c. Tensile Strength, ASTM D 412, Die C:
1) Carrier Film: 5,900 psi (40.71 MPa) minimum.
2) Polymeric Membrane: 590 psi (4.07 MPa) minimum.
d. Elongation, ASTM D 412, Die C: Polymeric Membrane: 455 percent minimum.
e. Peel Adhesion:
1) Dry: 7 to 11 pounds/inch (125 to 196 g/mm) width, minimum.
2) Wet: 7 to 12 pounds/inch (125 to 214 g/mm) width, minimum.
f. Pliability, ASTM D 146:
1) 180 Degree Bend: Unaffected.
2) 1 Inch (25.4 mm) Mandrel at -25oF (-32oC): Unaffected.
g. Water Vapor Permeance, ASTM E 96, Method B: 5.72 x 10-9 g/Pa-s-m2.
h. Water Absorption, ASTM D 570: 0.1 percent, 72 hours maximum.
i. Resistance to Hydrostatic Head: Equivalent to 240 feet (73.1m) of water.
j. Puncture Resistance, ASTM E 154: 67 pounds.
k. Exposure to Fungi, Soil Test: Pass, 16 weeks.
l. Color:
1) Carrier Film: White.
2) Polymeric Membrane: Black.
2. Proprietary Based Specification: Mel-Rol® Waterproofing System by W.R. Meadows, or approved equal. When air and surface temperatures are between 20oF (-7oC) and 60oF(16oC) Mel- Rol LT (Low Temperature) can be used.
B. Blindside Waterproofing Membrane: 73 mil (1.8 5mm) thick, composite sheet membrane comprised of an elastomeric membrane bonded to a three-ply plasmatic matrix and a non-woven geotextile fabric.
1. Performance Based Spec: Blindside waterproofing membrane shall have the following properties as determined by laboratory testing:
a. Membrane Thickness: 73 mil (1.85 mm)
b. Low Temperature Flexibility, ASTM D1970: Pass
c. Resistance to Hydrostatic Head, ASTM D5385-93: 230’ (70 m)
d. Elongation, ASTM D412-06: >400%
e. Tensile Strength (film), ASTM D882: 9,200 psi (63.4 MPa)
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f. Crack Cycling, ASTM C836: Pass
g. Puncture Resistance, ASTM E154: >210 lb. (>934 N)
h. Peel Adhesion to Concrete, ASTM D903: 10 lb/in (1,754 N/m)
i. Moisture Vapor Transmission, ASTM E96 (Method B): 0.0011 perms
j. Resistance to Penetration by Termites, Texas A&M Method, Percentage of Penetration: 0.0%
k. Resistance to Penetration by Pesticides, ASTM F2130, Percentage of Penetration: 0.0%
l. Resistance to Fungi in Soil, GSA-PBS 07115 – 16 weeks: No Effect
2. Proprietary Based Spec: MEL-ROL PRECON Blindside/Underslab Waterproofing Membrane by W. R. MEADOWS or approved equal.
2.02 ACCESSORIES
A. Auxiliary Materials: Furnish auxiliary materials recommended by waterproofing manufacturer for intended use and compatible with waterproofing membrane.
1. Primer: Liquid primer recommended by manufacturer of sheet waterproofing material substrate.
2. Mastic, Adhesives, and Tape: Liquid mastic and adhesives, and adhesive tapes recommended by waterproofing manufacturer.
3. Protection Board: Multi-ply, semi-rigid board, composed of a mineral-fortified asphaltic core formed between two outside layers of asphalt-impregnated fiberglass mat, weathercoated and covered with a polyethylene anti-stick sheet.
4. Performance Based Specification: protection course shall have the following characteristics based on ASTM D6506:
a. Puncture Strength, Class A & B: 365 N (82 lbf) minimum.
b. Thickness, Class A & B: 5.6 mm to 7.1 mm (0.220 to 0.280 inches).
c. Water Absorption, Class A & B: 10 % maximum.
d. Asphalt % by weight, Class A: 65 % minimum.
e. Asphalt % by weight, Class B: 40 % minimum.
f. Resistance to decay, Class A & B: Meets puncture requirements after completion of test.
5. Gaskets: gaskets shall comply with the requirements of ASTM C990 C Joints for Concrete Pipe, Manholes, and Manufactured Box Sections Using Preformed Flexible Joint Sealants.
2.03 BALLAST MAT
A. Ballast mat shall consist of natural rubber with fabric reinforcement designed to provide a reduction in the impact on structures of ground or structure-borne vibrations and in the crushing of ballast. The upper surface of the mat shall be textured to permit ballast to nest for track bed stability and shall contain synthetic elastomers for protection against attack by contaminants that may filter through ballast over time. The subsurface shall contain fabric reinforcement for strength and load distribution. Its underside shall provide a regular pattern of projections in the form of truncated cones.
B. Ballast Mat Material: Materials shall conform to the following requirements:
1. Capacity: Axle load (approximate) 40 Tons
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2. Dimensions:
a. Width: Not less than 54 inches,not including joint overlaps.
b. Thickness: 7/8 inch.
c. Length: 30 feet, maximum
3. Fabric (Fiberglass-coated PVC)
a. Tensile Strength: 600 pounds/inch.
b. Elongation at Break: 10 percent.
4. Elastomer Properties (natural rubber unless otherwise specified)
5. Top Layer (synthetic): 3/16 inch, 1-ply fabric
6. Isolating Layer: 5/8 inch.
C. Ballast Mat: Ballast mat shall conform to the following requirements:
1. Tensile Strength: 1,150 psi
2. Elongation at Break: 125 percent
3. Tear Resistance: 50 pounds/inch
4. Hardness (Shore A): 50(+/-5)
5. Dynamics: Dynamic to static stiffness ratio Kd related to a preload of 8.5 psi = 1.86 (+0.1/-free)
6. Temperature Range: Suitable for service where ballast mat temperatures range between minus 4 degrees F and plus 158 degrees F.
D. Joint Seal: The material used for sealing of the ballast mat joints shall be an integral extension of the top surface of the mat or a separate material having strength characteristics equal to those of the top layer of the ballast mat.
PART 3 EXECUTION
3.01 EXAMINATION
A. Examine surfaces to receive membrane. Notify VTA if surfaces are not acceptable. Do not begin surface preparation or application until unacceptable conditions have been corrected.
3.02 SURFACE PREPARATION
A. Protect adjacent surfaces not designated to receive waterproofing.
B. Clean and prepare surfaces to receive waterproofing in accordance with manufacturer's instructions.
C. Do not apply waterproofing to surfaces unacceptable to manufacturer.
D. Concrete surfaces must be clean, smooth and free of standing water.
E. Patch all holes and voids and smooth out any surface misalignments.
F. Ensure that substrate and backing surfaces are smooth and rigid where membrane turns down at edges and vertical surfaces, and up at curbs and other vertical barriers.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 07 13 00 Membrane Waterproofing - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3.03 APPLICATION
A. Exposed Side Application Waterproofing Membrane:
1. Apply waterproofing membrane system in accordance with manufacturer's instructions.
2. Ensure accessory materials are compatible with membrane and approved by membrane manufacturer.
3. Prime surfaces to be covered in one working day with applicable primer. Reprime uncovered surfaces next day.
4. Inspect membrane before covering and repair as necessary. Cover tears and inadequate overlaps with membrane. Seal edges of patches with pointing mastic.
5. Perform flood testing of horizontal applications, as required. Mark leaks and repair when membrane dries.
6. Avoid use of products which contain tars, solvents, pitches, polysulfide polymers, or PVC materials that may come into contact with waterproofing membrane system.
7. Install protection course as recommended by the manufacturer as soon as permissible by membrane applicator or manufacturer.
8. Butt together all protection course sheets and cut to fit all intersecting surfaces and protrusions.
9. If necessary, temporarily hold protection course in place using recommended adhesive by membrane manufacturer.
10. Cover joints with joint tape or alternatively, cover joints with roofer's glass reinforced tape embedded in hot asphalt. Consult membrane manufacturer regarding this application for compatibility.
11. Inspect membrane and protection course prior to pouring of concrete for any punctures or damage.
12. Backfill immediately using care and caution to avoid damage to waterproofing system.
13. Do not drop backfill material against protection course in such a manner that it could drag the sheet down as backfill drops.
B. Blindside Waterproofing Membrane: Vertical Application
1. Mechanically fasten membrane across the top lagging at 12” (300 mm) on center, ½” (12 mm) from the top, with fasteners approved by the manufacturer.
2. Ensure the fabric side of the membrane is facing the interior side of the form to receive the concrete.
3. Apply two-component liquid membrane over the areas where the fasteners have been attached and carry over the top edge.
4. Remove release paper on salvage edge of additional sheets and overlap edges of additional sheets 4” (100 mm). Roll press into place.
5. For end-to-end overlap, apply a coat of pointing mastic 3” (75 mm) wide along the end of the sheet.
6. Overlap subsequent sheet 3” (75 mm) and apply even pressure with a roller to ensure full adhesion.
7. At terminations of membrane, apply 12” (300 mm) wide area of fabric detail tape with 6” (150 mm) on each side of lap edge. For best results, use detail tape adhesive over 12” (300 mm) area prior to application of tape.
8. Inspect membrane prior to pouring of concrete for any punctures or damage.
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9. Repair damaged areas as directed by the manufacturer.
10. Install protection course as recommended by the manufacturer as soon as permissible by membrane applicator or manufacturer.
11. Butt together all protection course sheets and cut to fit all intersecting surfaces and protrusions.
12. If necessary, temporarily hold protection course in place using recommended adhesive by membrane manufacturer.
13. Cover joints with joint tape or alternatively, cover joints with roofer's glass reinforced tape embedded in hot asphalt. Consult membrane manufacturer regarding this application for compatibility.
14. Inspect membrane and protection course prior to pouring of concrete for any punctures or damage.
15. Backfill immediately using care and caution to avoid damage to waterproofing system.
16. Do not drop backfill material against protection course in such a manner that it could drag the sheet down as backfill drops.
C. Blindside Waterproofing Membrane: Horizontal Application
1. Prepare subgrade prior to membrane application according to ACI 302.1R.17.
2. Ensure the fabric side of the membrane is facing up.
3. Remove release paper on salvage edge of additional sheets and overlap edges of additional sheets 4” (100 mm). Roll press into place.
4. For end-to-end overlap, apply a coat of pointing mastic 3” (75 mm) wide along the end of the sheet.
5. Overlap subsequent sheet 3” (75 mm) and apply even pressure with a roller to ensure full adhesion.
6. At terminations of membrane, apply 12” (300 mm) wide area of fabric detail tape with 6” (150 mm) on each side of lap edge. For best results, use detail tape adhesive over 12” (300 mm) area prior to application of tape.
7. Inspect membrane prior to pouring of concrete for any punctures or damage.
8. Repair damaged areas as directed by the manufacturer.
9. Install protection course as recommended by the manufacturer as soon as permissible by membrane applicator or manufacturer.
10. Butt together all protection course sheets and cut to fit all intersecting surfaces and protrusions.
11. If necessary, temporarily hold protection course in place using recommended adhesive by membrane manufacturer.
12. Cover joints with joint tape or alternatively, cover joints with roofer's glass reinforced tape embedded in hot asphalt. Consult membrane manufacturer regarding this application for compatibility.
13. Inspect membrane and protection course prior to pouring of concrete for any punctures or damage.
14. Backfill immediately using care and caution to avoid damage to waterproofing system.
15. Do not drop backfill material against protection course in such a manner that it could drag the sheet down as backfill drops.
3.04 PROTECTION
A. After the membrane waterproofing application has been inspected and accepted by the VTA, install
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 07 13 00 Membrane Waterproofing - 8 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
protection board with adhesive in accordance with the manufacturer's installation instructions and recommendations, for protection from subsequent construction operations and ballasted track installation. Protection board damaged during subsequent construction operations and activities shall be properly repaired or replaced immediately.
B. Protect membrane on vertical and horizontal applications with immediate application of waterproofing protection course, if no drainage system is used, or rolled matrix drainage system. Use pointing mastic as an adhesive.
C. Backfill immediately using care to avoid damaging waterproofing membrane system.
3.05 BALLAST MAT
A. Install ballast mat on waterproofing membrane protection course soon after application according to ballast mat manufacturer's written instructions and before commencing subsequent construction operations.
B. Install ballast mat directly on the waterproofed deck protection course cleaned of all debris and dust.
C. Remove rough or uneven areas by grinding until the surface is acceptable and re- waterproof as required. Obtain Engineer's inspection and approval of intersections of ballast plate and recesses prior to installing the mats.
D. Place overlay from low point to high point with caution. Overlap the mat sections as required by the instructions.
E. Cut the ends of the ballast mat rolls square and in a neat straight line. Seal the joint with repair tape or other material as specified by the ballast manufacturer.
F. Prevent intrusion of silt and debris into the void space between the cones of the ballast mat. Protect the joints and place the z-fastener strips over the edges of the ballast mat as soon as the mat is installed. At no time allow water, silt, or debris to enter into the newly installed ballast mat from the adjacent track or from other sources. Install temporary positive seals along the open edges of the mat to prevent such intrusion
3.06 PROTECTION
A. Protect waterproofing from damage and wear during application and remainder of construction period, according to manufacturer's written instructions.
B. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.
C. Remove ballast mats contaminated with silt and debris, clean and reinstall or replace with new materials.
3.07 FIELD QUALITY CONTROL
A. Verify that installed membrane is free from wrinkles, buckles, blisters (trapped air) and other damage. Damaged or defective membrane shall be corrected.
B. Verify that waterproof membrane is free from defects or damage before covering or concealing the membrane with protection board.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 07 13 00 Membrane Waterproofing - 9 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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SECTION 10 14 00 SIGNAGE
PART 1 GENERAL
1.01 DESCRIPTION A. This Section includes specifications for the Signage including Way Finding, Directional and Regulatory signs.
1.02 REFERENCE STANDARDS A. ASTM International (ASTM): 1. A167 Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip 2. B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate 3. D635 Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position 4. D3841 Specification for Glass-Fiber-Reinforced Polyester Plastic Panels
B. Metropolitan Transportation Commission (MTC) Regional Transit Wayfinding Guidelines and Standards Release 2.0 dated February 2012
C. California Manual on Uniform Traffic Control Devices (Federal Highway Administration MUTCD, as amended for use in California) (CMUTCD) D. State of California, Department of Transportation (Caltrans), Standard Specifications: 1. Section 56 Signs. 2. Section 75 Miscellaneous Metals. E. State of California, Department of Transportation (Caltrans), Standard Plans.
1.03 SYSTEM DESCRIPTION A. Signage, unless otherwise noted, shall conform to MTC Regional Transit Wayfinding Guidelines and Standards, and Caltrans Standard Specifications, Section 56, Signs, and CMUTCD. B. Owner will furnish a “camera-ready” copy of the colored Caltrain™ and other logos as required.
1.04 SUBMITTALS A. Shop Drawings:
Signage drawings and details provided in the contract documents are intended to represent the general configuration and message required. Submit complete shop drawings including dimensions, specific colors, configurations, messages for each sign. Include mounting locations with specific dimensions. At all locations, existing and new, show and dimension new sign relationship to all corners, ceiling, railing, and other existing or new elements adjacent to the sign. Show sizes and thickness of all members, types of materials, methods of construction and assembly, complete sign and framing dimensions including span length and post heights, hangers, brackets, anchorage, relationship to surrounding work by other trades, shop finishes, sign designs, layouts, lettering (including letter spacing), and other pertinent details of fabrication and installation.
Graphically depict the information for each sign, including sign panel size, configuration and graphic layout. Show dimensions of sign as well as the graphic elements; font sizes and spacing; icon sizes and spacing; all colors; logo sizes and spacing dimension from graphic to edge of sign, etc.. B. Manufacturer's Data: Submit sign manufacturer's descriptive data. C. Samples: Submit samples of all materials under this Section, as follows:
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1. Samples of all colors proposed for use on all signs, at least 8 inches by 8 inches. 2. Full-size paper proofs of all signs, marked with proposed colors. 3. After approval of color match and lettering proofs, submit for approval one full size sign of each type, as selected by the Engineer, complete and ready for installation. Submit as many times as necessary until approval by the Engineer has been obtained. Sample sign, upon approval, shall serve as the standard to be equaled by all other work. 4. Submit manufacturer's color palette for fiberglass sign panels and frames for color selection. D. Certification of Compliance: Certify that aluminum posts for fiberglass sign panels will withstand 100-mile per hour wind loading. E. Signage shop drawings and submittals shall be reviewed and approved by Caltrain before manufacturing, printing and installation.
1.05 QUALITY ASSURANCE A. Installation work under this Section shall be performed by experienced sign erectors.
1.06 ENVIRONMENTAL REQUIREMENTS A. Ship sign panels in such a manner as to ensure their arrival on the job site in an undamaged condition. B. Deliver and store material in a manner to prevent cracking, chipping or stress of the components, and to prevent mechanical damage or weather damage.
1.07 WARRANTY A. Provide a 5 year warranty against material defects
PART 2 PRODUCTS 2.01 NON-ILLUMINATED SIGN PANELS
A. Aluminum Sign Panels: 1. Unless otherwise noted, fabricate sign panels from flat sheet aluminum sheeting conforming to ASTM B209, Alloy 6061-T6, not less than 1/8 inch thick. 2. The sign background shall be reflective sheeting conforming to Federal Specification L-S-300A. The reflective sheeting shall include a pre-coated pressure sensitive adhesive or a tack-free heat activated adhesive either of which shall be applied as specified by the sheeting manufacturer to commended, properly prepared flat surfaces without the necessity of additional adhesive coats on the reflective sheeting or application surface. 3. Application of all lettering, arrows, and other artwork shall be by photographic silk screen. No modification of typefaces or layout rules and the arrow/circle will be permitted without approval by the Engineer.
B. Fiberglass Reinforced Plastic Sign Panels: 1. Products: One of the following products and in compliance with the requirements specified herein: Fiber-Brite; Sequentia, "Polyplate"; Inteplast Group "InteCel" (0.5 inch for Post-Mounted CZ Signs, 48 inches or less), or equal. 2. Furnish fiberglass reinforced plastic panel sign in accordance with ASTM D3841. Panel: Acrylic modified and ultraviolet stabilized for outdoor weatherability. Plastic shall contain additives designed to suppress fire ignition and flame propagation. When tested in accordance with the requirements in the ASTM D635, the extent of burning shall not exceed one (1) inch. 3. Plastic shall be stabilized to prevent the release solvents and monomers. The front and back surfaces of the laminate shall be clean and free of constituents and releasing agents that can interfere with the bonding of retroreflective sheeting. 4. Panel shall be weather resistant Grade II thermoset polyester laminate.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
5. Color of fiberglass reinforced plastic panels shall be uniform gray. 6. Panels shall be minimum 0.135-inch thick. 7. Tolerances: Finished fiberglass reinforced plastic panel signs shall be flat within a tolerance of 1/32 inch per linear foot when measured across the plane of the sign in all directions. The finished signs shall have an overall tolerance within 1/8 inch of the specified dimensions. 8. Fabrication: Cut fiberglass reinforced plastic panels from a single p i e c e of laminate. Pre-drill bolt holes. Fabricate true and smooth predrilled bolt holes, panel edges, and the front and back surfaces of the panels. The panel surfaces shall be free of visible cracks, pinholes, foreign inclusions, warping and wrinkles that can affect performance and serviceability.
2.02 TYPEFACE (TEXT)
A. Unless otherwise noted, typefaces shall be Helvetica medium with industry standard normal letter spacing.
B. Place type and symbols as shown on the Contract Drawings. Bring any design conflict in the manufacture and fabrication of the signage to the attention of the Engineer before proceeding.
2.03 SIGN FRAMES
A. Fabricate required steel framing, sign back bracing and support posts in accordance with Caltrans Standard Specifications, Section 75, Miscellaneous Metal.
B. Hot-dip galvanize steel framing, mounting components, hardware and appurtenances after fabrication and touch up as specified in Section 055000, Metal Fabrications, and with Caltrans Standard Specifications, Section 75, Miscellaneous Metal.
C. Frames for fiberglass sign panels: Extruded aluminum tubing conforming to the manufacturer's requirements for each sign type. Finish shall be satin anodized in color selected by the Engineer.
2.04 FASTENINGS AND ANCHORS
A. Unless otherwise noted, design a complete system of fastenings and anchorage devices for the various signs, as required for attachment to the various supporting structures.
B. Straps and Saddle Brackets: Stainless steel conforming to the requirements of ASTM A167, Type 302 or 304, for mounting sign panels on electroliers, sign structure posts, and where shown on the Contract Drawings.
C. Theft and vandal proof bolts: Stainless steel with a chromium content of at least 16 percent and a nickel content of at least 8 percent.
D. Lag Screws, Bolts (Except Theft-Proof Bolts), Metal Washers and Nuts: Commercial quality steel, hot dip galvanized after fabrication in accordance with Caltrans Standard Specifications, Section 75, Miscellaneous Metal. Fiber washers shall be of commercial quality.
E. Fastenings and anchors for fiberglass sign panels shall conform to the sign panel manufacturer's requirements for each sign type.
2.05 SIGN COLORS
A. All sign colors shall meet MTC Signage Standards and shall be approved by Caltrain. Standard paint colors as manufactured by Dupont, or equal, and as follows:
Color Imron (spray) Dulux (brush) Red 68209UM 93-58209H Yellow 6808U 93-6808 White 617U 93-21667
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
Black 69 93-005
B. For fiberglass sign panels, as selected from manufacturer's color palette.
2.06 POSTS
A. Metal Posts (Aluminum Signs only): Metal posts shall be in accordance with Caltrans Standard Specifications, Section 56-4.02B, Metal Posts, with the following additional requirements: 1. Hot dip galvanize steel posts, mounting components, hardware and appurtenances after fabrication and touch up as specified in Section 05500, Metal Fabrications, or as specified in Caltrans Standard Specifications Section 75 -1.05, Galvanizing. 2. Aluminum posts: As manufactured by Architectural Sign Systems (ASI), (916) 924-1939; Vomar Products, (818) 894-7174, Model MP-L, or equal.
B. Aluminum Posts for Fiberglass Sign Panels: Extruded aluminum tubing conforming to the manufacturer's requirements for each sign type. Finish shall be satin anodized. Design posts to withstand 100 mile per hour wind loading.
PART 3 – EXECUTION
3.01 SIGN INSTALLATION
A. Install signs true, plumb, and level, where shown on the Contract Drawings. Do no field cutting of any sign work. Prevent bending and chipping signs. Exercise extreme care in all handling and stacking of signs to avoid bending or chipping. Replace chipped and bent sign panels. Exact locations of signs will be confirmed by the Engineer in the field.
B. Rigidly anchor work to the supporting construction, as shown on the approved shop drawings. Conceal fastenings, except those which anchor supporting members to structure. Fabricate and erect supporting members and securely attach to the various structures in accordance with Caltrans Standard Specifications, Section 75, Miscellaneous Metal.
C. Subsequent to erection, if required by the Engineer, exterior signs may be required to be covered until their actual use is required. Material used to temporarily cover any sign panel shall effectively conceal the message and be non-injurious to the panel, its finish, and its structural integrity.
D. Where new signs are replacing existing signs, mount new signs in the same location with same relationship to corners, ceilings, handrails and other existing adjacent elements. Provide shop drawings showing existing conditions with location of new signs.
E. At tunnel signs, install new signs similar to existing in relationship to corners and ceiling. Provide shop drawings per these specifications.
3.02 POST INSTALLATION
A. Install posts in accordance with Caltrans Standard Specifications, Section 56- 4.03, Construction, with the following additional requirements: 1. The remaining space around the post in the post holes shall be backfilled with concrete. 2. Dispose of surplus excavated material as specified in Section 312316 Excavation. 3. Repair any spalling, chipping or cracking of concrete structures. Obtain the Engineer's approval of repair method. 4. Unless otherwise noted, do not paint wood posts and blocks. 5. Touch-up galvanized metal as specified in Section 055000, Metal Fabrications, or as specified in Caltrans Standard Specifications Section 75 - 1.05, Galvanizing.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3.03 REMOVING, RELOCATING, REINSTALLING AND SALVAGING EXISTING SIGNS
A. Remove, relocate, and salvage existing signs in accordance with Section 02 41 13, Selective Site Demolition, as augmented herein.
B. Salvaging of signs shall include removing, disassembling, preparing, marking, bundling, packaging, tagging, hauling and stockpiling. Signs to be salvaged shall not be removed until their use is no longer required as determined by the Engineer. Salvaged materials shall be cleaned of all foreign materials and pressed flat before delivery to the Engineer.
E. Existing posts, which support signs that are to be salvaged, shall become the property of the Contractor and shall be disposed of outside the work site. Refer to General Provisions 7.16, Disposal of Material Outside of the Work Site.
F. Protection and cleanup requirements for the new signs shall apply to the existing signs once that have been reinstalled.
3.04 PROTECTION AND CLEANING
A. Protect and maintain completed sign panels in good condition, free from dirt, scratches, hand marks or other blemishes.
B. Clean surfaces of sign work as recommended by the sign manufacturer after installation and keep in a condition satisfactory to the Engineer.
C. Remove and replace defective work, including that exhibiting cracked, chipped, scratched, abraded, or otherwise damaged finishes, with work conforming to the specified requirements.
3.05 DISSIMILAR MATERIALS
A. Separate aluminum surfaces in contact with or in close proximity to non- compatible metals or concrete with non-absorptive tape, coat of heavy-bodied bituminous paint, or zinc chromate primer.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 5 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 10 14 00 Signage - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 26 05 33
RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Section includes requirements for conduit and conduit fittings. Conduit types shall be as shown on the Contract Drawings and as specified herein.
B. Section includes requirements for outlet boxes for use with wiring devices and lighting fixture outlets.
1.02 RELATED SECTIONS
A. GC-43, Submittals of Shop Drawings, Product Data and Samples
B. 26 01 26, Maintenance Testing of Electrical Systems
C. 26 05 00, Common Work Results for Electrical
D. 26 05 19, Low-Voltage Electrical Power Conductors and Cables
E. 26 05 26, Ground and Bonding for Electrical Systems
F. 26 05 34, Handholes and Pullboxes
G. 26 21 16, Service Pedestal
H. 26 56 29, Site Lighting
I. 33 05 28, Trenching and Backfilling For Utilities
J. 31 23 43, Structure Excavation and Backfill
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for work specified in this section shall be considered as included in the various contract items of work shown on the Schedule of Quantities and Prices and no additional payment will be allowed therefor.
1.04 REFERENCES
A. American National Standards Institute (ANSI): 1. C80.1 Electrical Rigid Steel Conduit (ERCS)
B. ASTM International (ASTM): 1. A153: Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware 2. D2564: Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems
C. American Welding Society (AWS): 1. D1.1: Structural Welding Code – Steel
D. California Code of Regulations (CCR):
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1. Title 24, Part 3, California Electrical Code
E. Institute of Electrical and Electronics Engineers (IEEE): 1. IEEE C2: National Electrical Safety Code (NESC)
F. National Electrical Manufacturers Association (NEMA): 1. NEMA FB-1: Fittings, Cast Metal Boxes, Conduit Bodies for conduit, Electrical Metallic Tubing (EMT) and Cable 2. NEMA OS-1: Sheet-Steel Outlet Boxes, Device Boxes, Covers and Box Supports 3. NEMA 250: Enclosures for Electrical Equipment (1000 Volts max) 4. TC2: Electrical Polyvinyl Chloride (PVC) Conduit 5. TC3: Polyvinyl Chloride (PVC) Fittings for Use with Rigid PVC Conduit and Tubing 6. TC7: Smooth Wall Coilable Electrical Polyethylene Conduit
G. National Fire Protection Association (NFPA): 1. NFPA 70: National Electrical Code (NEC)
H. Underwriters Laboratories Inc. (UL): 1. UL 6: Electrical Rigid Metal Conduit – Steel 2. UL 514A: Metallic Outlet Boxes 3. UL 651: Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings 4. UL 651A: Schedule 40 and 80 High Density Polyethylene (HDPE) Conduit
1.05 SUBMITTALS
A. Refer to Section 26 05 00, Common Work Results for Electrical, for additional submittals and submittal requirements.
B. Submit manufacturer’s product data for all types of conduit and fittings to be used.
C. Submit Work Plan for Directional Boring operations outlining the procedure and schedule to be used to execute the work.
D. Submit specifications on directional boring equipment to be used and documentation showing training and experience of personnel that will be assigned to the project.
E. Submit concrete mix for concrete encased duct bank.
F. Submit manufacturer’s product data on outlet boxes to be used.
G. Submit shop drawings for custom box.
H. Conduit shop drawing information may be combined on a single drawing. Identify each drawing by a number and descriptive title.
I. Submit conduit test reports.
1.06 DELIVERY, STORAGE AND HANDLING
A. Install thread protectors both ends of galvanized rigid steel conduits for shipment and handling.
B. Package couplings separately.
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1.07 QUALITY ASSURANCE
A. Regulatory Requirements: Comply with NEC and PUC GO No. 128
PART 2 - PRODUCTS 2.01 GENERAL
A. Conduit and conduit fittings shall be standard types and sizes as manufactured by a nationally recognized manufacturer of this type of materials, and be in conformity with standards.
B. Furnish electrical boxes of material, finish, type and size indicated and required for location, kind of service, number of wires, and function.
C. Boxes shall have appropriate means to secure covers. Provide boxes complete with accessible covers designed for quick removal and suitable for purpose used; equip boxes, in which or on which no devices or fixtures are to be installed with flat or raised blank covers as required.
D. Provide neoprene gaskets 1/8 inch thick for boxes subjected to weather.
E. Provide fire resistant gaskets 1/8 inch thick for boxes in tunnels and crosspassages.
F. Furnish necessary adapter plate for mounting devices on light fixtures, brackets, supports, hangers, fittings, bonding jumpers and other accessories required.
G. Concealed and Embedded Junction Boxes: Zinc-coated inside and out.
2.02 RIGID GALVANIZED STEEL CONDUIT (RGS)
A. Provide conduit, couplings, elbows, bends, sealing fittings, and nipples conforming to ANSI C80.1 and UL 6, with each length bearing manufacturer's stamp and UL label.
B. Couplings, locknuts, and all other fittings shall be galvanized, waterproof, and threaded type only.
C. Bushings shall be nylon insulated metallic and grounding type.
D. Furnish conduit straps, clamps and clamp backs made of galvanized malleable iron.
2.03 POLYVINYLCHLORIDE (PVC) CONDUIT
A. Schedule 40 and schedule 80 rigid polyvinyl chloride electrical conduit conforming to the requirements of EPC-40-PVC and EPC-80-PVC conduit of NEMA TC 2 and fittings for EPC-40-PVC and EPC-80- PVC conduit of NEMA TC 3 and listed by UL for direct underground burial, manufactured from high impact, non-conducting, self-extinguishing material.
B. Couplings, Adapters, Expansion Fittings: Conform to same requirements as rigid PVC conduit. Use solvent cement for PVC joints, as recommended by conduit manufacturer.
C. Bends: Factory made PVC bends.
D. PVC conduits shall be Schedule 40 throughout the Work, except at rail crossing, which shall be PVC Schedule 80.
E. UL 651 listed and in accordance with NEC Article 352 for underground use.
F. Solvent for welding PVC shall comply with ASTM D 2564 or approved equal.
G. Minimum 10 foot assembled from factory section, 25 foot assembled from factory section preferred.
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2.04 HIGH DENSITY POLYETHYLENE (HDPE) CONDUIT AND INNER DUCT
A. Schedule 40, grey color, smooth wall, flexible, high density polyethylene electrical conduit conforming to the requirements of UL 651A and NEMA TC 7 and listed for direct underground burial.
B. Couplings, Adapters Fittings: Designed to be used for joining HDPE conduits to PVC or to threaded Rigid Steel Conduit.
C. Inner ducts shall be corrugated HDPE, 1 inch inside diameter, to be installed inside underground PVC conduits. Multipole inner ducts in a single conduit shall be color coded orange, red, yellow, blue in that order.
2.05 PULL CORD
A. Pull Cord or Rope: Twisted or braided nylon cordage, 1/4 inch diameter, with a minimum tensile strength of 1000 pounds. Pull cord shall be combination footage measuring tape and pull line.
2.06 MANDRELS
A. High-strength aluminum alloy with steel center rod and cast iron eyes.
B. Use solid cylindrical type mandrels, minimum 12 inches long and 1/4 inch less than diameter of duct at center, tapering to 1/2 inch less than duct size at ends.
2.07 DIRECTIONAL BORING EQUIPMENT
A. The directional boring equipment shall consist of a directional boring rig of sufficient capacity to perform the bore and pullback the pipe, a boring fluid mixing and delivery system of sufficient capacity to successfully complete the crossing, a guidance system to accurately guide boring operations and trained and competent personnel to operate the system. All equipment shall be in good, safe operating condition with sufficient supplies, materials and spare parts on hand to maintain the system in good working order for the duration of this project.
B. The directional boring machine shall consist of a hydraulically powered system to rotate, push and pull hollow drill pipe into the ground at a variable angle while delivering a pressurized fluid mixture to a guidable drill (bore) head. The machine shall be anchored to the ground to withstand the pulling, pushing and rotating pressure required to complete the crossing. The hydraulic power system shall be self- contained with sufficient pressure and volume to power boring operations. Hydraulic system shall be free of leaks. Rig shall have a system to monitor and record maximum pull-back pressure during pull- back operations. The rig shall be grounded during boring and pull-back operations. Sufficient spares shall be kept on hand for any break-downs which can be reasonably anticipated.
C. The bore head shall be steerable by changing it’s rotation and shall provide the necessary cutting surfaces and boring fluid jets.
D. The Guidance System shall be of a proven type and shall be setup and operated by personnel trained and experienced with this system. The Operator shall be aware of any magnetic anomalies and shall consider such influences in the operation of the guidance system if using a magnetic system.
E. A self-contained, closed, boring fluid mixing system shall be of sufficient size to mix and deliver boring fluid composed of bentonite clay, potable water and appropriate additives. Mixing system shall be able to molecularly shear individual bentonite particles from the dry powder to avoid clumping and ensure thorough mixing. Mixing system shall continually agitate the boring fluid during boring operations.
F. The mud pumping system shall have sufficient capacity and be capable of delivering the boring fluid at the required constant minimum pressure. The delivery system shall have filters in-line to prevent solids from being pumped into the drill pipe. Connections between the pump and drill pipe shall be relatively leak-free. Used boring fluid and boring fluid spilled during boring operations shall be contained and
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properly disposed of. A berm, minimum of 12” high, shall be maintained around boring equipment, boring fluid mixing system, entry and exit pits and boring fluid recycling system (if used) to prevent spills into the surrounding environment. Pumps and or vacuum truck(s) of sufficient size shall be in place to convey excess boring fluid from containment areas to storage facilities.
2.08 CONDUIT SUPPORTS
A. Steel shapes, angles and channels: 1 1/2 by 1 1/2 or 1 5/8 by 1 5/8 inches, 12 gauge, cold-formed, lipped channel; designed to accept special spring-held hardened steel nuts for securing hanger rods and other attachments.
2.09 REINFORCED PLASTIC MORTAR SPACERS (RPM)
A. Duct Spacers: Refer to Section 31 23 43, Structure Excavation and Backfill.
2.10 CONCRETE ENCASEMENT FOR UNDERGROUND DUCTS
A. Concrete shall be composed of fine aggregate, coarse aggregate, portland cement, and water so proportioned and mixed as to produce a plastic, workable mixture. Fine aggregate shall be of hard, dense, durable, clean and uncoated sand. The course aggregate shall be reasonably well graded from 3/16” to 1”
B. The fine and course aggregate shall be free from injurious amounts of dirt, vegetable matter, soft fragments or other deleterious substances. Water shall be fresh, clean, and free from salts, alkali, organic matter, and other impurities. Concrete for underground ducts shall have a compressive strength of 3,000 psi at the age of 28 days and shall be provided with a minimum 5 lbs. per cubic yard of red oxide. Slump shall be in accordance with the requirements for Portland Cement Concrete in Division 3 of the project specifications. Re-tempering of concrete will not be permitted.
2.11 UTILITY MARKER TAPE
A. Tracer Tape: As specified in Division 31, Earthwork. Use in trenches containing electric and power circuit. Tape shall have printed warning that an electric circuit is located below the tape.
2.12 TRACER WIRE
A. Tracer Wire: Shall be solid soft annealed copper conductor, tinned, #10 AWG, 600 V rated high density polyethylene insulation, orange color, suitable for direct burial.
2.13 CONDUIT EXPANSION FITTINGS
A. Fabricate from material similar to type conduit with which used.
B. Include factory installed packing ring and pressure ring; prevent entrance of moisture.
C. Include grounding ring or grounding strap for metallic expansion couplings.
2.14 END CAPS
A. Provide end caps at both ends of all empty conduits.
2.15 STANDARD SHEET METAL BOXES
A. Standard Sheet Metal Boxes: Conform to NEMA OS-1 standard, hot dipped galvanized, one piece drawn steel.
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B. Outlet Boxes shall be 4 inch minimum true size and 1-1/2 inches minimum depth unless otherwise specified for the installation. For 1-inch conduit, use boxes 4-11/16-inch minimum trade size. Sectional boxes assembled by means of screws are not acceptable.
C. Use standard galvanized covers, rings and fittings of appropriate type for box or device to be installed. Same thickness as sheet steel boxes.
D. Provide products of commercial quality best suited for purpose indicated or specified.
E. Luminaire and equipment supporting boxes shall be rated for weight of equipment supported.
F. Manufacturer: Appleton, Bowers, Raco, Steel City, or VTA approved equal.
2.16 STAINLESS STEEL METAL BOXES
A. Stainless steel metal boxes shall be outdoor, NEMA 4X, 14 gauge Type 316L stainless steel body and door, seams continuously welded and ground smooth.
B. Door shall have continuous stainless steel hinge, and be provided with clamp assembly and hasp and staple for padlocking.
C. Provide bonding provision on door and grounding stud on body.
D. Box shall be provided with stainless steel backpanel for mounting of devices.
2.17 CUSTOM STAINLESS STEEL METAL BOXES
A. Where indicated on the Plans, provide custom stainless steel metal box, mounted recessed in concrete wall. Box shall be 12 gauge Type 316L stainless steel body and door, seams continuously welded and ground smooth.
B. Door shall have continuous stainless steel hinge, and be provided with tamper proof bolting to secure door to the box lip. Door shall be flush mounted with concrete wall. Provide key lock compatible with JPB standards.
C. Provide bonding provision on door and grounding stud on body.
D. Box shall be provided with stainless steel backpanel for mounting of devices. Size of backpanel shall allow for installation of conduits through the rear of the box as indicated on the Plans.
E. Acceptable custom manufacturer: Meyers Sheet Metal Box, Inc., 138 W Harris Ave., So. S.F., CA 94080, telephone 650.873.8889
2.18 CAST METAL BOXES
A. Cast Boxes: Conform to NEMA FB-1. Boxes for exposed switches and receptacles shall be FS or FD Types as indicated on the Contract Drawings.
B. Boxes shall be cast metal type with threaded hubs. Steel or ferrous alloy, with compatible conduit fittings.
C. Use heavy duty cast metal boxes with recessed cover and neoprene gasket suitable for concrete wall embedment. Cover shall be provided with tamper proof screws. Provide box with drilled and tapped holes for the number and size of conduits indicated on the Contract Drawings.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 6 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
2.19 BOX BREATHER
A. Breather shall be threaded type capable of passing 0.2 cubit feet of air per minute at atmospheric pressure.
PART 3 - EXECUTION
3.01 GENERAL REQUIREMENTS
A. All exposed conduit, conduit embedded in concrete walls and embedded in concrete floor shall be threaded rigid galvanized steel, except as follows: 1. Rigid PVC conduit may be used: a. For direct earth burial outside of building foundations, only where specifically shown on Contract Drawings and if buried not less than 24 inches below the surface. b. PVC Schedule 80 conduit shall be used at rail crossings. Conduit shall be buried not less than 42” from the bottom of the ballast layer. Conduit under rail crossings shall be concrete encased as indicated on the Contract Drawings.
B. For PVC conduits, maintain continuity of conduit system ground by installing copper grounding wire inside PVC conduit, per CCR, Title 24. Ground this wire at each accessible location (manhole, pullbox, cabinet, outlet and junction box, and similar locations) and at each termination.
C. Check embedded items for correct location and detail before concrete is placed.
D. Control erection tolerance requirements; do not impair strength, safety, serviceability, or appearance of installations. Determine exact locations of conduit.
E. Install trade size, type, and general routing and location of conduits, raceways, and boxes as indicated or specified.
F. When exposed or buried conduit passes through expansion or contraction joint in structure, install conduit at right angles to joint; provide approved conduit expansion fitting at joint.
G. Provide expansion fittings in conduit runs as required to compensate for thermal expansion.
H. Conduits exposed to different temperatures: Seal to prevent condensation and passage of air from one area to the other.
I. Provide raceway seals for all underground conduits terminating in above grade boxes.
J. When field cutting of conduit is required, remove rough edges. Where conduit enters box or other fitting, provide bushing to protect wire from abrasion.
K. Provide a minimum slope of three inches to each 100 feet away from buildings and towards manholes or pull boxes; run in straight lines between indicated changes in direction.
L. Perform welding in accordance with AWS D1.1.
3.02 EXCAVATION, TRENCHING, AND BACKFILL
A. As specified in Section 33 05 28, Trenching and Backfilling For Utilities, and as indicated in the Contract Documents.
3.03 REINFORCED PLASTIC MORTAR SPACERS (RPM)
A. Duct Spacers: Refer to Section 31 23 43, Structure Excavation and Backfill.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 7 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3.04 UNDERGROUND CONDUITS
A. Refer to Section 33 05 28, Trenching and Backfilling For Utilities for provisions for trenching, backfilling, and tracer tape. See this specification and Contract Drawings for installation requirements of tracer wire.
B. Verify conduit is continuous and not damaged by pulling mandrel through embedded conduit within five days after concrete placement.
C. Cap or plug ends of conduit with permanent cap or plug. Do not use duct tape to temporarily seal conduit. Prevent concrete and other materials from entering and obstructing conduit. Do not install bell end fittings on conduits in ungrounded pull boxes.
D. Sandpaper joints in PVC conduit; remove burrs, clean and dry joints, and brush with solvent cement recommended by manufacturer.
E. Heating or any other method shall not be used to produce a larger bend. A sweep radius shall never be less than 15 feet in any given section.
F. Install duct runs straight and true between pull boxes. Do not use bends except where shown on the Contract Drawings. For alignment curves, do not use more than 5 degree segments for each standard straight length.
G. Conduits smaller than three inches: Make horizontal and vertical changes in direction exceeding 10 degrees by long sweep bends; having minimum radius of 25 feet. Manufactured bends may be used at ends of short runs of 100 feet or less, but only at or within five feet of end of run. Sweep bends may be made up of curved or straight sections, or combinations. Manufactured bends: bend radius to centerline of all conduits not less than 10 times nominal diameter of conduit for ducts of three inches in diameter and larger.
H. Place underground raceways at minimum depth of 24 inches to top of sand encasement, or to top of conduit (as applicable), unless specifically indicated otherwise.
I. Plug all ends of unused ducts and conduits in pull boxes/manholes. Use plugs manufactured for the purpose.
J. Unless otherwise shown on the Contract Drawings, install an expansion joint with minimum range of 5 inches in every 100-foot length of PVC type conduit. Make all joints in PVC conduit with solvent cement, as recommended by conduit manufacturer.
K. During non-work hours, and at locations where installation of ducts is temporarily suspended or terminated, close ends of ducts with caps or plugs fitted to prevent entry of water or debris. Use caps or plugs designed for purpose by conduit manufacturer.
L. Inspect ducts and couplings to ensure only clean and undamaged units are incorporated in Work.
M. Refer to Article entitled Mandrel.
N. Provide flared bell ends on conduit and ducts entering manholes, handholes, and pull boxes.
O. Conduit runs shall have no more than three (3) 90 degree bends between pull boxes, between manholes, and from point to point from the last pullbox.
3.05 UNDERGROUND CONDUITS FOR COMMUNICATIONS
A. Conduit bends shall be in accordance with NEC and the California Electrical Code, with not more than 120 degrees in bend. Where more bends are required in a particular run, install pull boxes as required to facilitate pulling conductors. For straight conduit runs, maximum length without a pull box/manhole
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 8 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
shall not exceed 500 feet. For conduit runs with some bends, maximum length without a pull box/manhole shall not exceed 400 feet.
B. Conduit stacks shall begin sweeps a minimum of 10 feet from exterior pull box face, leaving 10 feet of straight conduit perpendicular to cored entrance holes of pull box.
C. When conduit stack enter or exit in a straight line to a pull box face, conduit stack shall separate from common trench at a minimum distance of 30 feet from entrance to pull box.
D. When conduit stack enter or exit from sweep to a manhole, conduit stack shall separate from common trench at a minimum distance of 35 feet perpendicular to entrance of pull box.
E. All conduits shall be 15-foot minimum radius in any given section of the 90 degrees conduit sweep. 90 degrees conduit sweep shall be manufacturer- supplied bends of 20 foot length. Determine the total sweep radius by the maximum natural bending capability of each twenty-foot section.
F. Terminate underground conduit stubs with coupling and threaded plug.
G. Where indicated in the Contract Drawings, install the required number and size of inner ducts.
3.06 DIRECTIONAL BORING OPERATIONS
A. The VTA must be notified 48 hours in advance of starting work. The Directional Bore shall not begin until VTA personnel is present at the job site and agrees that proper preparations for the operation have been made. VTA approval for beginning the installation shall in no way relieve the Contractor of the ultimate responsibility for the satisfactory completion of the work. It shall be the responsibility of VTA to provide inspection personnel at such times as appropriate without causing undue hardship by reason of delay to the Contractor.
B. All personnel shall be fully trained in their respective duties as part of the directional boring crew and in safety. Training shall be provided specific to the project if any potential hazards may be encountered which has not already been included in personnel’s training.
C. Prior to any alterations to work-site, contractor shall photograph or video tape entire work area, including entry and exit points. One copy of which shall be given to Engineer and one copy to remain with contractor for a period of one year following the completion of the project.
D. Work site as indicated on drawings, within right-of-way, shall be graded or filled to provide a level working area. No alterations beyond what is required for operations are to be made. Contractor shall confine all activities to designated work areas.
E. Entire drill path shall be accurately surveyed with entry and exit stakes placed in the appropriate locations within the areas indicated on drawings. If contractor is using a magnetic guidance system, drill path will be surveyed for any surface geo-magnetic variations or anomalies.
F. Contractor shall place silt fence between all boring operations and any drainage, wetland, waterway or other area designated for such protection by contract documents, state, federal and local regulations. Additional environmental protection necessary to contain any hydraulic or boring fluid spills shall be put in place, including berms, liners, turbidity curtains and other measures. Contractor shall adhere to all applicable environmental regulations. Fuel or oil may not be stored in bulk containers within 200’ of any water-body or wetland.
G. Contactor shall notify all companies with underground utilities in the work area via the state or local “one-call” to obtain utility locates. Once the utilities have been located Contractor shall physically identify the exact location of the utilities by vacuum or hand excavation, when possible, in order to determine the actual location and path of any underground utilities which might be within 20 feet of the bore path. Contractor shall not commence boring operations until the location of all underground utilities within the work area have been verified.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 9 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
H. Contractor shall adhere to all applicable state, federal and local safety regulations and all operations shall be conducted in a safe manner. Safety meetings shall be conducted daily with a written record of attendance and topic submitted to VTA.
I. Conduit shall be connected together in one length prior to pull-back operations, if space permits. Conduit shall be placed on pipe rollers before pulling into bore hole with rollers spaced close enough to prevent excessive sagging of conduit.
J. Pilot hole shall be drilled on bore path with no deviations greater than 5% of depth over a length of 100’. In the event that pilot does deviate from bore path more than 5% of depth in 100’, contractor shall notify VTA and VTA may require contractor to pull-back and re-drill from the location along bore path before the deviation.
K. Upon successful completion of pilot hole, contractor will ream bore hole to a minimum of 25% greater than outside diameter of the conduit group using the appropriate tools. Contractor shall not attempt to ream at one time more than the boring equipment and mud system are designed to safely handle.
L. After successfully reaming bore hole to the required diameter, contractor shall pull the number and size of flexible HDPE conduits through the bore hole as indicated on the Contract Drawings. In front of the conduits shall be a swivel. Once pull-back operations have commenced, operations must continue without interruption until conduits arre completely pulled into bore hole. During pull-back operations contractor shall not apply more than the maximum safe conduit pull pressure at any time.
M. In the event that conduits become stuck, contractor shall cease pulling operations to allow any potential hydro-lock to subside and shall re-start pulling operations. If conduits remain stuck, contractor shall notify VTA. VTA and contractor will discuss options and then work will proceed accordingly.
N. Following successful pull-back of conduits, contractor shall inject a 300 psi cement slurry to fill the space between conduits and the bore hole. Contractor shall mandrel and clean conduits as specified for conduits installed in open trenches.
O. Following boring operations, contractor shall de-mobilize equipment and restore the work-site to original condition. All excavations shall be backfilled and compacted to 95% of original density. All unused bores shall be filled by injecting 300 psi cement slurry.
P. Contractor shall maintain a daily project log of boring operations and a guidance system log with a copy given to VTA at completion of project. As-built drawings shall be certified as to accuracy by contractor.
3.07 EXPOSED CONDUITS
A. Use galvanized rigid steel (GRS) for exposed conduits.
B. Install conduits straight and true with respect to each other and adjacent construction.
C. Exposed conduits on Public Areas shall be painted to match surrounding areas.
D. Route exposed conduits in such a manner as to obtain the least visibility from public view, along columns and beams, and similar features. Verify routing with the VTA.
E. Provide separable watertight hub fittings with gasket, separate nylon insulated throat and case hardened locknut.
3.08 SUPPORTS
A. Support conduits in vertical runs not to exceed 5-foot intervals.
B. For single conduit runs, use single hole malleable iron clamps for horizontal runs on vertical surfaces.
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 10 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
3.09 MANDREL
A. As each section of conduit and duct line is completed between manholes, handholes, and pull boxes, pull mandrel and swab through conduit or duct to remove foreign matter.
B. Draw mandrel through completed conduit run manually without mechanical assistance. If obstructions are encountered which cannot be removed or if conduits do not pass the “usable capacity” mandrel, correct or replace conduit.
C. Correct or replace conduits which have a consistent “hard spot” (indicating possible separation), conduits where joints may damage cable sheaths, or conduits with misaligned junctions or poor conduit joints.
D. During construction, protect partially completed duct lines from entrance of debris by means of suitable caps or plugs.
3.10 PULL CORDS
A. Install pull line in empty (unused/future) conduits. Make pull-line continuous from outlet to outlet, with two (2) feet of slack at each outlet.
B. After conduits are cleaned and mandrelled, install rope and securely seal both ends of conduit with caps.
C. Do not splice pull cords. Leave ample slack length at each end of pull cords.
3.11 FIELD QUALITY CONTROL
A. Notify the VTA for inspection and sign-off of the following installations: 1. Conduits to be direct buried: Notify the VTA prior to covering. 2. Completed underground installations: Obtain the VTA’s inspection and acceptance before installation of cable and equipment. 3. Conduits to be embedded in concrete: Obtain the VTA’s inspection and acceptance before issuing concrete pouring permit. 4. Mandrelling and swabbing (to be witnessed by the VTA). 5. Installation of pull cords (to be witnessed by the VTA).
B. Document each mandrelled or swabbed conduit and submit test report.
3.12 OUTLET BOXES
A. Outlet boxes 1. Securely fasten outlet boxes in position and support independent of the conduit system. 2. Install boxes true to the building lines and at equal heights in conformity with mounting heights per NEC and as indicated in the Contract Documents. 3. Boxes shall have only the holes necessary to accommodate the conduits at point of installation. 4. Rigidly secure boxes in position. Set boxes so that the front edge of the box is flush with the finished wall or ceiling line, or not more than 1/8 inch back of same. 5. All boxes shall be accessible. Mount boxes with long axis of devices vertical unless otherwise indicated. 6. Locate boxes and box knockouts/hubs without interference with reinforcing steel.
B. Lighting Outlet Boxes
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 11 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1. Embedded and concealed installation: Standard sheet steel boxes approved for intended purpose. 2. Locate outlet boxes to allow luminaries positioned as shown on reflected ceiling plan.
C. Install necessary adapter plate for mounting devices on light fixtures, brackets, supports, fittings, bonding jumpers and other accessories.
D. Install specified gaskets.
E. Grounding: As specified in Section 26 05 26, Ground and Bonding for Electrical Systems. Install grounding jumpers.
3.13 CAST METAL BOXES
A. Cast metal boxes shall be installed recessed and flush with the concrete surfaces, true to building lines and the mounting heights indicated on the Contract Drawings.
B. Cast metal boxes, not provided with conduit hubs, shall be drilled and tap for the size and number of conduits indicated on the Contract Drawings. Follow manufacturers recommending spacing between conduits.
3.14 STAINLESS STEEL BOXES
A. Mount outdoor stainless steel boxes on walls or stanchions as indicated on the Contract Drawings. All hardware required for installing boxes shall be stainless steel.
B. Provide breather fitting on top of box as indicated on the Contract Drawings.
C. Custom boxes to be installed recessed in existing concrete walls shall comply with installation requirements shown on the Structural Contract Drawings.
3.15 CLEAN UP
A. After installation, clean boxes placed in concrete.
3.16 FIELD QUALITY CONTROL
A. Notify the VTA for inspection and obtain VTA’s acceptance of handholes and pull boxes prior to installation of cable and equipment. Make corrections required.
END OF SECTION
File Date: 04/22/2016 TECHNICAL SPECIFICATIONS 26 05 33 Raceway and Boxes for Electrical Systems - 12 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 26 05 34
HANDHOLES AND PULLBOXES
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Section includes requirements for handholes and pull boxes. Handholes and pull boxes are both referred to in this Section as handholes.
1.02 RELATED SECTIONS
A. GC-43, Submittals of Shop Drawings, Product Data and Samples
B. 26 01 26, Maintenance Testing of Electrical Systems
C. 26 05 00, Common Work Results for Electrical
D. 26 05 19, Low-Voltage Electrical Power Conductors and Cables
E. 26 05 26, Ground and Bonding for Electrical Systems
F. 26 05 33, Raceway and Boxes for Electrical Systems
G. 26 21 16, Service Pedestal
H. 26 56 29, Site Lighting
I. 33 05 28, Trenching and Backfilling For Utilities
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for work specified in this section shall be considered as included in the various contract items of work shown on the Schedule of Quantities and Prices and no additional payment will be allowed therefor.
1.04 REFERENCES
A. American Association of State Highway and Transportation Officials (AASHTO): 1. M199: Specification for Precast Reinforced Concrete Manhole Sections
B. ASTM International (ASTM): 1. A153: Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
C. American National Standard Institute (ANSI): 1. 77: Specification for Underground Enclosure Integrity
D. American Welding Society (AWS): 1. D1.1: Structural Welding Code – Steel
E. California Code of Regulations (CCR): 1. Title 24, Part 3, California Electrical Code
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 26 05 34 Handholes and Pullboxes - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
F. California State Department of Transportation (Caltrans) Standard Plans: 1. ES-8: Pull Box Details
G. California Public Utilities Commission (CPUC) General Orders (G.O.): 1. G.O. No. 128. Rules for Construction of Underground Electric Supply and Communication Systems
H. Institute of Electrical and Electronics Engineers (IEEE): 1. IEEE C2: National Electrical Safety Code (NESC)
I. National Fire Protection Association (NFPA): 1. NFPA 70: National Electrical Code (NEC)
1.05 SUBMITTALS
A. Refer to Section 26 05 00, Common Work Results for Electrical, for additional submittals and submittal requirements.
B. Submit manufacturer’s product data for supports, covers, grounding, pullboxes and handholes, joint sealing compound, and other materials. Include concrete mix design.
C. Submit shop drawings for fabrication and installation of concrete and high density polymer concrete structures.
D. Submit records of grout quantity installed in casings.
E. Submit precast enclosure manufacturer’s Certification of Compliance.
1.06 QUALITY ASSURANCE AND CONTROL
A. Regulatory Requirements: Comply with NEC and PUC GO No. 128
PART 2 - PRODUCTS 2.01 GENERAL
A. Furnish electrical boxes of material, finish, type and size indicated and required for location, kind of service, number of wires, and function.
B. Boxes shall have appropriate means to secure covers. Provide boxes complete with accessible covers designed for quick removal and suitable for purpose used.
2.02 PRECAST CONCRETE HANDHOLES
A. Unless otherwise indicated, precast concrete handholes shall conform to Caltrans Standard Plan ES-8, No. 3-1/2T, No. 5T, and No. 6T, for H-20 loading, and AASHTO M199.
B. Pullbox No. 3-1/2T shall be “Christy” B1017 or VTA approved equal, with minimum inside dimensions of 10-5/8 inch wide x 17-1/4 inch long x 24 inches deep. Pullbox shall be provided with bolt down checkered steel lid identified as “ELECTRICAL” or “COMMUNICATIONS”, as required.
C. Pullbox No. 5T shall be “Christy” B1324 or VTA approved equal, with minimum inside dimensions of 13-1/4 inch wide x 24 inch long x 24 inches deep. Pullbox shall be provided with bolt down checkered steel lid identified as “ELECTRICAL” or “COMMUNICATIONS”, as required.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 26 05 34 Handholes and Pullboxes - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
D. Pullbox No. 6T shall be “Christy” B1730 or VTA approved equal, with minimum inside dimensions of 17 inch wide x 30 inch long x 24 inches deep. Pullbox shall be provided with bolt down checkered steel lid identified as “ELECTRICAL” or “COMMUNICATIONS”, as required.
E. Where indicated on the Plans provide pullbox “Christy” B2436 or VTA approved equal, with minimum inside dimensions of 24 inch wide x 36 inch long x 24 inches deep. Pullbox shall be provided with two (2) piece bolt down checkered steel lids, with one of the leads identified as “ELECTRICAL” or “COMMUNICATIONS”, as required.
2.03 HIGH DENSITY POLYMER CONCRETE (HDPC) HANDHOLES
A. HDPC handholes shall conform to ANSI/SCTE 77 and shall be a non-conductive, monolithic, straight wall enclosure utilizing 20,000 psi polymer concrete for higher strength. Handhole shall be designed for Tier 22 loading. Handhole inside dimensions shall be as indicated on the Plans. Cover shall be bolt down with stainless steel penta bolts and identified as “ELECTRICAL” or “COMMUNICATIONS”, as required.
B. HDPC handholes shall be Oldcastle Synertech or approved equal.
PART 3 - EXECUTION
3.01 GENERAL REQUIREMENTS
A. For PVC conduits, maintain continuity of conduit system ground by installing copper grounding wire inside PVC conduit, per CCR, Title 24. Ground this wire at each accessible location (manhole, pullbox, cabinet, outlet and junction box, and similar locations) and at each termination.
B. Check embedded items for correct location and detail before concrete is placed.
C. Control erection tolerance requirements; do not impair strength, safety, serviceability, or appearance of installations. Determine exact locations of conduit.
D. Perform welding in accordance with AWS D1.1.
3.02 EXCAVATION, TRENCHING, AND BACKFILL
A. As specified in Section 33 05 28, Trenching and Backfilling For Utilities, and as indicated in the Contract Documents.
3.03 CONCRETE AND HDPC HANDHOLES
A. Install handholes flush with concrete finish surface, or flush with sidewalks, curbs, paved areas and other concrete surfaces. Install top of handholes 1 inch above grade in landscaped areas. Seal unused openings with mortar.
B. Install no more than equivalent of three 90 degree bends between pull points.
C. Plug all ends of unused ducts and conduits in handholes. Use plugs manufactured for the purpose.
3.04 HANDHOLE INSTALLATION
A. Excavation and backfill shall be in accordance with 33 05 28, Trenching and Backfilling For Utilities.
B. Install handhole structures in accordance with the requirements established for precast concrete drainage structures as specified under Section 33 40 00, Storm Drainage Utilities.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 26 05 34 Handholes and Pullboxes - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
C. Set handholes on well-compacted soil with minimum of six inches of crushed stone base. Where duct lines enter handholes, sections of duct may be cast in concrete or may enter through square or rectangular opening of suitable dimensions.
D. Review location of handholes and obtain the VTA’s acceptance before installation of handhole is started.
E. Unless otherwise indicated, install ground rod at each pullbox. For handholes with metallic covers, provide grounding braid and grounding accessories for grounding the cover(s) to the ground rod.
3.05 CLEAN UP
A. After installation, clean boxes placed in concrete.
3.06 FIELD QUALITY CONTROL
A. Notify the VTA for inspection and obtain VTA’s acceptance of handholes and pull boxes prior to installation of cable and equipment. Make corrections required.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 26 05 34 Handholes and Pullboxes - 4 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 31 23 43 STRUCTURE EXCAVATION AND BACKFILL
PART 1 GENERAL
1.01 SUMMARY
A. This Section includes requirements for structural excavation and backfill for the Santa Clara Station PUP Extension, including structure excavation, structure backfill and associated appurtenances including pervious backfill, crushed rock backfill, and lean concrete backfill,.
1.02 RELATED SECTIONS
A. GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. Section 02 61 00, Removal and Disposal of Contaminated Soils and Hazardous Waste
C. Section 03 05 10, Portland Cement Concrete.
D. Section 03 30 00, Cast-In-Place Concrete.
E. Section 31 23 19, Dewatering.
F. Section 32 11 23, Aggregate Base Course
1.03 MEASUREMENT AND PAYMENT
A. General: Measurement and payment for structure excavation and structure backfill will be either by the lump-sum method or by the unit-price method as determined by the listing of the bid items for structure excavation and structure backfill indicated in the Schedule of Quantities and Prices.
B. Lump Sum: If the Schedule of Quantities and Prices indicates a lump sum for structure excavation and structure backfill, then structure excavation and structure backfill will be measured for payment by lump sum, acceptably performed and completed.
C. Unit Prices: If the Schedule of Quantities and Prices indicates unit prices for structure excavation and backfill, the unit-price method of measurement and payment will be in accordance with the following requirements.
1. Measurement:
a. Quantities of earthwork to be paid for as structure excavation and structure backfill (including pervious backfill, and crushed rock backfill).will be measured by the cubic yard.
b. The quantities for payment will be determined from limits shown on the Contract Drawings or directed by the VTA.
c. No deduction in structure excavation and structure backfill (including pervious backfill and crushed rock backfill) pay quantities will be made where the Contractor does not elect to excavate material which is outside the limits of the actual structure but within the limits shown on the Contract Drawings or specified or directed by the VTA.
d. No compensation will be made for the removal and use or disposal of material which may come into an excavation from outside the designated limits or for the volume of backfill occupied by the new structure or for the removal and disposal of material resulting from swell caused by the driving of piles in an excavation or for furnishing and placing backfill material in an excavation that is below or outside the designated limits, and these quantities will not be included in the quantities of structure excavation and structure backfill (including pervious backfill and crushed rock backfill) to be paid for.
e. Whenever an alternative or option, which affects earthwork quantities, is shown or noted on the Contract Drawings, or permitted by these Technical Specifications, the quantities of
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 31 23 43 Structure Excavation and Backfill - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
earthwork will be computed on the basis of the dimensions and details shown on the Contract Drawings and no change in the quantities to be paid for will be made because of the use by the Contractor of such alternatives or options.
2. Payment:
a. The Contract prices paid per cubic yard for structure excavation and backfill of the types shown in the Schedule of Quantities and prices, shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in excavating for and backfilling structures completely, as shown on the Contract Drawings, as specified in these Technical Specifications, and as directed by the VTA.
b. If structure excavation or structure backfill involved in tunnels, ramp or retaining walls is not otherwise designated by type, and payment for such structure excavation or structure backfill has not otherwise been provided for in these Technical Specifications, such structure excavation or structure backfill will be paid for at the Contract price per cubic yard for structure excavation (tunnel), structure backfill (tunnel), structure excavation (ramp), or structure backfill (ramp) as determined by the VTA.
c. Full compensation for locating, potholing, protecting, and maintaining existing pipes, sewers, utilities, and other facilities as required by the provisions of this Section including settlement monitoring during construction, shall be considered as included in the various Contract prices paid for the items of work requiring the excavation or backfill, and no additional compensation will be allowed therefor.
d. Full compensation for accommodating structure excavation and structure backfill adjacent to existing pipes, sewers, utilities, and other facilities shall be considered as included in the various Contract prices paid for the items of work requiring the excavation or backfill, and no additional compensation will be allowed therefor.
e. Full compensation for constructing weep holes, including the cost of furnishing and placing burlap sacks and wire mesh, shall be considered as included in the various prices paid per cubic yard for structure backfill and no additional compensation will be allowed therefor.
f. Full compensation for constructing weep holes, including the cost of furnishing and placing geocomposite drain, plastic pipe and treated permeable baseshall be considered as included in the various prices paid per cubic yard for structure backfill and no additional compensation will be allowed therefor.
g. Full compensation for excavation and removal of ballast and sub-ballast associated with the structure excavation for the tunnel shall be considered to be included in the price paid per cubic yard for Structure Excavation (Tunnel) and no additional compensation will be allowed therefor.
h. The quantities of structure excavation and structure backfill required for minor structures as provided in Section 51-7, "Minor Structures," of the Caltrans Standard Specifications will not be paid for as separate items and full compensation therefor will be considered as included in the Contract price paid per cubic yard for the concrete involved in constructing the minor structures.
i. Full compensation for sampling, testing and inspections required by these Technical Specifications will be considered as included in the Contract prices paid for the structure backfill and excavation involved and no additional compensation will be allowed therefor.
j. Full compensation for lean concrete and Controlled Low-Strength Material (CLSM) fill used as backfill other than directly below the embedded rock formations shall be considered as included in the Contract prices paid for the structure backfill involved and no additional compensation will be allowed therefor.
k. Full compensation for additional excavation or backfill required to achieve stable vertical or horizontal surfaces where required by these Technical Specifications shall be considered as
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included in the Contract price for structure backfill and no additional compensation will be allowed therefor.
l. Measurement and payment for dewatering structure excavations, including containment, storage, analysis and discharge of extracted water, where required shall be made in accordance with the provisions of Section 31 23 19 – Dewatering.
m. Measurement and payment for sawcutting and removing existing improvements, excavating, removing and capping existing pipes, sewers, utilities, and other facilities, and backfilling the excavation, where required shall be made in accordance with the provisions of Section 02 41 16 – Structure Demolition.
n. Measurement and payment for designing, constructing, and removing, shoring, bracing, trench and excavation worker safety and other temporary structures including the leaving of shoring in place where required, shall be made in accordance with the provisions of Section 31 50 00 – Excavation Support and Protection.
1.04 REFERENCES
A. ASTM International (ASTM):
1. ASTM C131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
2. ASTM C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
3. ASTM C535 Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
4. ASTM D422 Test Method for Particle-Size Analysis of Soils
5. ASTM D448 Classification for Sizes of Aggregate for Road and Bridge Construction
6. ASTM D653 Terminology Relating to Soil, Rock, and Contained Fluids
7. ASTM D1140 Test Methods for Amount of Material in Soils Finer than No. 200 Sieve
8. ASTM D1557 Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3) (2700 kN-m/m3)
9. ASTM D2216 Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
10. ASTM D2487 Classification of Soils For Engineering Purposes (Unified Soil Classification System)
11. ASTM D2974 Test Methods for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils
12. ASTM D4253 Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table
13. ASTM D4254 Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density
14. ASTM D4318 Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils
15. ASTM D6938 Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)
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B. State of California, Department of Transportation (Caltrans):
1. Standard Specifications
2. California Test 202 Sieve Analysis of Fine and Coarse Aggregates (Equivalent to ASTM C136)
3. California Test 217 Sand Equivalent (No ASTM Equivalent)
1.05 DEFINITIONS
A. Earthwork Terminology: Terms used in this Section and not defined herein shall be interpreted in accordance with the definitions given in ASTM D653.
B. Soil Classification: Soil classification is based on the Unified Soil Classification system given in ASTM D2487. Group symbols, when used, conform with the symbols of ASTM D2487.
C. Fill: Soil or soil-rock material placed to raise the subgrade or natural grade of the site.
D. Backfill: Soil or soil-rock material used to backfill excavations and to backfill excavated spaces around foundation walls, building walls, retaining walls, head walls, and abutments.
E. Embankment: Soil or soil-rock material for embankment construction. Embankment construction includes constructing embankments and dikes, including the preparation of the areas upon which they are to be placed; and the construction of temporary surcharge embankment above the grading plane.
F. Borrow: Soil or soil-rock material used for fill, backfill, embankment, or other construction that is excavated from an off-site location and hauled in.
G. Unsuitable Material: Excavated material or material below the natural ground surface in embankment areas or below sub grade elevation in excavated areas, which is unsuitable for its planned use. Unsuitable material is further defined as material determined to be:
1. Of such unstable nature as to be incapable of being compacted to specified density using ordinary methods at optimum moisture content; or
2. Too wet to be properly compacted and circumstances prevent suitable drying prior to incorporation into the work; or
3. Contaminated; or
4. Otherwise unsuitable for the planned use.
The presence of excessive moisture in a material is not, by itself, sufficient cause for determining that the material is unsuitable. The existence of unsuitable material may be indicated in the Contract Documents or may be determined by the VTA or Independent Testing Agency during the progress of the work.
H. Relative Compaction: The ratio, expressed as a percentage, of the in-place dry density of material as compacted in the field to the maximum dry density of the same material as determined by laboratory test ASTM D1557.
I. Optimum Moisture Content: The water content at which a soil can be compacted to a maximum dry unit weight by a given compactive effort.
J. Relative Density: Mass per unit volume as specified in ASTM D4253 and ASTMD4254, as applicable to the soil and test method employed.
1.06 SUBMITTALS
A. Shop Drawings for Potholing:
1. Submit Shop Drawings showing all potholed pipes, sewers, utilities and other facilities. The Shop
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Drawings shall show all survey information at each location, and accurately establish the size, location, elevation, and alignment of the facility as well as the existing grade elevations in the vicinity of the pothole. The Shop Drawings shall also include the bearing of the facility alignment, coordinates at the centerline of the facility for pipelines, and the coordinates of the corners of boxes, manholes, and other similar types of facilities.
2. The Shop Drawings shall be prepared at 1"=10' scale, using AutoCAD Release14. The Shop Drawings shall be sufficiently large and show the following:
a. Topography
b. Structures adjacent to the potholes
c. Columns adjacent to the potholes
d. Other proposed improvements in the vicinity that might be affected by the existence of the existing pipe, sewer, utility or other facility.
3. The Shop Drawings shall label all pertinent information relating to the proposed improvements shown including but not limited to layout lines, offsets, and footing elevations. These Shop Drawings shall be submitted 30 days prior to any proposed shoring, excavation, or pile driving.
B. Shoring and Bracing:
1. Prior to excavation, submit Shop Drawings and calculations in accordance with Section 31 50 00 - Excavation Support and Protection.
2. Dewatering System: Prior to installation of the dewatering system, submit Shop Drawings and calculations of the dewatering system in accordance with Section 31 23 19 – Dewatering.
C. Support Systems:
1. Where support systems, shield systems, or other protective systems are to be used during structure excavations, submit design calculations and Shop Drawings that demonstrate conformance with OSHA regulations. The Shop Drawings and calculations shall be stamped and signed by a licensed civil engineer of the State of California with expertise in safety engineering.
D. Certificates of Compliance:
1. Submit Certificates of Compliance for each type of aggregate, cement, or asphalt to be used in treated permeable base. If the treated permeable base is provided by a ready-mix supplier, the certificate of compliance shall be submitted and signed by the manufacturer of treated permeable base.
2. Submit a Certificate of Compliance for geocomposite drain certifying that the drain produces the required flow rate and complies with these Technical Specifications. The Certificate of Compliance shall be accompanied by a flow capability graph for the geocomposite drain showing flow rates and the externally applied pressures and hydraulic gradients. The flow capability graph shall be stamped with the verification of an Independent Testing Laboratory.
3. Not Used.
4. Submit a Certificate of Compliance for each class of drain rock, crushed rock, and backfill material.
5. Certificates of Compliance shall include the name, source, and description of all materials used and shall be signed by the material supplier certifying that each material item complies with, or exceeds the specified requirements.
E. Laboratory Test Reports:
1. Laboratory test reports shall show the name of testing agency, date of testing, types of tests
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performed and shall be signed by a principal of the testing agency who is a registered civil engineer in the State of California. Laboratory tests shall not be older than eight months and shall certify that the tested materials meet the specified standards.
F. Product Data: Submit product data and application instructions.
G. Qualifications of Independent Testing Agency: Refer to Section 01 45 30 – Structural Quality Control.
H. Unfavorable Weather Conditions:
1. Excavating, filling, backfilling, and grading work shall not be performed during weather conditions which might damage or be detrimental to the condition of existing ground, in-progress work, or completed work. When the work is interrupted by rain, excavating, filling, backfilling, and grading work shall not resume until the site and soil condition (moisture content) are suitable for compaction.
2. Subgrade shall be free from mud, snow, ice, and deleterious material when work is resumed.
3. Soil material that is too wet for compaction shall be left to drain, to be aerated and dried by disking and harrowing or other approved methods until the moisture content of the area is uniform and within the specified limits.
I. Prevention of Erosion: Comply with requirements specified in Section 01 57 00 - Temporary Controls, and the following:
1. Prevent erosion of stockpiles, ditches, embankments, filled, backfilled, and graded areas until such time as permanent drainage and erosion control measures have been installed.
2. Perform "protective grading" to provide positive drainage and to minimize ponding of surface water.
1.07 QUALITY CONTROL
A. Codes and Standards: Comply with all Federal, State, and Local codes and safety regulations. In addition, the design of shoring, sheet piling, bracing and temporary structures shall comply with all the applicable provisions of the following codes, specifications, investigations and standards, except where more stringent requirements are shown or specified:
1. Subsurface Investigation Reports.
2. State of California, Department of Transportation (Caltrans), Bridge Design Specifications Manual (BDS), LFD Version, April 2000.
3. State of California, Department of Transportation (Caltrans), Seismic Design Criteria (SDC) Version 1.4, June 2006.
B. Sampling, Testing and Inspection:
1. Retain an Independent Testing Agency to perform sampling, testing and inspections as required by the Caltrans Standard Specifications and these Technical Specifications. Attention is also directed to Article 3.07, “Field Quality Control” herein.
2. Identify the sources of materials for structure backfill, pervious backfill, crushed rock backfill, and drain rock.
3. Request approval of proposed sources of materials 20 days in advance of the need for these materials to allow time for source quality control testing.
4. Notify the VTA at least 48 hours in advance of sampling, tests and inspections, being performed by the Independent Testing Agency. The VTA may elect to observe these procedures. Provide samples and facilities for inspection to the VTA if requested.
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5. Submit samples of materials for testing in accordance with the provisions outlined in the Caltrans Standard Specifications, these Technical Specifications and as directed by the VTA. Select materials in the presence of the Independent Testing Agency that fairly represent average quality and grading of material proposed for the various types of structure backfill. When a source for the various types of fill materials has been approved, no change will be allowed without written permission of the VTA.
PART 2 PRODUCTS
2.01 BACKFILL MATERIALS - GENERAL REQUIREMENTS
A. Material used for backfill construction shall be an inert, inorganic soil, free from deleterious substances, and of such quality that it will compact thoroughly without the presence of voids when watered and rolled. (Inorganic soil is defined as soil containing less than two percent by weight of organic material when tested in accordance with ASTM D2974.)
B. Excavated material is not suitable for backfill construction and shall be removed from the site and disposed in Section 02 61 00 Removal and Disposal of Contaminated Soils and Hazardous Waste and Article 3.06, “Disposal of Excess and Waste Materials” herein.
C. Imported backfill material shall be an inert soil or soil-rock material free of organic matter meeting or exceeding the minimum requirements specified herein for the location.
D. All material to be used for backfill construction requires written approval of the VTA.
2.02 BACKFILL MATERIALS - SPECIFIC REQUIREMENTS
A. Structural Backfill: Well to moderately-graded granular soils, as excavated, screened or blended, having the following mechanical properties and gradation:
1. Liquid Limit (ASTM D4318): 25 maximum
2. Plasticity Index (ASTM D4318): 6 maximum
3. Gradation (ASTM D422):
Passing Opening Percent Passing, by Weight 3 inches square 100 U.S. No. 4 35 minimum U.S. No. 30 20 minimum U.S. No. 200 25 maximum
4. Sand Equivalent (Calif. Test 217): 20 minimum
B. Pervious Backfill: Clean washed gravel or crushed stone, natural sands, manufactured sand, or combination thereof, conforming to the following requirements:
1. Gradation (ASTM C136):
Passing Opening Percent Passing, by Weight 2 inches square 100 U.S. No. 50 0-100 U.S. No. 100 0-8 U.S. No. 200 0-4
2. Percentage wear (ASTM C131 or C535): 50 percent maximum
3. Soft fragments as a function of percent wear: 15 percent maximum
4. Coal and lignite: 0.25 percent maximum
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5. Clay Lumps: 0.25 percent maximum
6. Other deleterious material: 2.0 percent maximum
C. Drain Rock: Hard durable, clean sand, gravel or crushed stone, free from organic material, clay balls or other deleterious substances, conforming to the following requirements:
1. Gradation (Caltrans Class 1)
Sieve Size Percent Passing Type A Type B 2" - 100 1½" - 95-100 3/4" 100 50-100 1/2" 95-100 - 3/8" 70-100 15-55 No. 4 0-55 0-25 No. 8 0-10 0-5 No. 200 0-3 0-3
2. Durability Index: not less than 40+
D. Crushed Rock Backfill: Hard, durable, gravel or crushed stone, free from organic material, clay balls, or other deleterious substances, conforming to the following requirements:
1. Gradation (ASTM D448)
Sieve Size Percent Passing 2" 100 1½" 90-100 3/4" 20-55 1/2" - 3/8" 0-5 No. 4 - No. 8 -
E. Not Used.
F. Controlled Low-Strength Material (CLSM): Fill Controlled Low-Strength Material (CLSM) Fill shall conform with the provisions of Section 03 05 10, “Portland Cement Concrete”.
2.03 GEOCOMPOSITE DRAIN SYSTEM
A. Not Used.
2.04 ENGINEERING FABRIC
1. Not Used.
2.05 LEAN CONCRETE BACKFILL
A. Lean concrete for backfill shall be furnished in accordance with the requirements of Section 03 05 10 - Portland Cement Concrete.
2.06 SOURCE QUALITY CONTROL
A. The Independent Testing Agency shall perform quality control tests of each type of material required on the project from the sources proposed by the Contractor in accordance with the requirements of the Technical Specifications and Article 3.07, “Field Quality Control” herein. Receive written approval for each source of material prior to hauling any material to the site.
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B. Backfill and materials proposed to be used in the work shall be tested in the laboratory for compliance with specified requirements as follows:
1. Moisture-Density Relationship: ASTM D1557.
2. Moisture Content: ASTM D2216.
3. Liquid Limit: ASTM D4318.
4. Plastic Limit and Plasticity Index: ASTM D4318.
5. Percentage of Wear: ASTM C131 or C535 as applicable.
6. Sieve Analysis: ASTM D422, and ASTM C136, as applicable.
7. Percent Passing No. 200 sieve: ASTM D1140.
8. Sand Equivalent: California Test 217.
9. Organic Content of Soils: ASTM D2974.
C. Where classification of soils is necessary to meet specified requirements, perform laboratory tests in accordance with ASTM D2487.
D. Submit certified test reports of all tests in accordance with Article 1.06, “Submittals” herein.
E. The Independent Testing Agency shall select three samples of each material proposed for use as required for preparing checklists.
PART 3 EXECUTION
3.01 PIPES, SEWERS, UTILITIES, AND OTHER FACILITIES
A. Location:
1. Attention is directed to the possibility that existing and newly constructed pipes, sewers, utilities and other facilities including main lines, trunk lines, service laterals, and appurtenances may be in a location different from that which is indicated on the Contract Drawings or in these Technical Specifications.
2. Attention is directed to the possible existence of main line or trunk line pipes, sewers, utilities, and other facilities that are not indicated on the Contract Drawings or in the Technical Specifications.
3. Attention is directed to the existence of numerous service laterals and appurtenances which are not indicated on the Contract Drawings or in the Technical Specifications. These service lateral and appurtenances provide services to each of the existing properties, structures, and buildings along the project alignment and may include but are not limited to gas, electric, water, TV, sanitary sewer, storm sewer, and telephone.
4. Attention is directed to the existence of City signal facilities that may be in a location different from that which is indicated on the Contract Drawings and the potential for the existence of signals, conduits, pull boxes, loop detectors, detector pads, and the like, that are not indicated on the Contract Drawings.
B. Underground Service Alert (USA):
1. Notify Underground Service Alert (USA), at 1-800-227-2600, 60 days before beginning shoring work, structure excavation, or pile driving and have them locate and mark the facilities within and near the areas of shoring work, structure excavation, pile driving and areas where equipment will be operated.
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2. Keep markings current in accordance with the requirements of USA.
C. Facility Owners:
1. Notify the utility companies, public agencies, and other facility owners which do not participate in USA, which have underground facilities within the limits of work, 60 days before beginning shoring work, structure excavation, or pile driving in accordance with each owner's notification requirements and have them locate and mark the facilities within and near the areas of shoring work, structure excavation, pile driving and areas where equipment will be operated.
2. Keep markings current in accordance with the requirements of the facility owner and to the requirements of USA.
D. Signal Facilities: Notify the Public Works Department of the respective city 60 days before beginning shoring work, structure excavation, or pile driving in the vicinity of signal facilities to provide the approximate locations of conduits, loop detectors, detector pads, and the like. These facilities shall be relocated or protected in accordance with the details shown on the Contract Drawings and the provisions of these Technical Specifications.
E. Locating and Potholing:
1. Prior to beginning shoring work, tieback installation, structure excavation, or pile driving, determine the exact locations of all underground pipes, sewers, utilities, and other facilities indicated on the Contract Drawings, identified by USA, identified by other facility owners or the respective Public Works Departments, and any other underground pipes, sewers, utilities, or other facilities which can be inferred from the presence of visible facilities such as buildings, meters, junction boxes, valve pits, manholes, and cleanouts, or from other physical features such as markings, cuts, or patches, in pavement, sidewalks, or curbs. Such facilities include but are not limited to:
a. Storm drains (storm sewers) and drainage facilities
b. Sanitary sewers
c. Gas facilities
d. Electrical systems
e. Television and communication systems
f. Signal systems
g. Water supply facilities
h. Duct banks
i. Fuel lines and facilities
2. Pothole all underground pipes, sewers, utilities and other facilities that are located within temporary construction easements for tiebacks or closer than a distance necessary to provide ten feet of clearance to the nearest point of shoring work, structure excavation, or pile driving, at least 40 days prior to beginning shoring work, structure excavation, or pile driving. Potholes shall be made in accordance with the details shown on the Contract Drawings, the provisions of the Caltrans Standard Specifications and these Technical Specifications.
3. Pothole all underground pipes, sewers, utilities, and other facilities where equipment will be operated within ten feet or where excavations will be located within ten feet of the pipe, sewer, utility or other facility. Potholes shall be made in accordance with the details shown on the Contract Drawings, the provisions of the Caltrans Standard Specifications and these Technical Specifications.
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4. Potholes shall expose both sides of the pipe, sewer, utility, or other facility being potholed and large enough so that the size, depth, location, and alignment can be accurately established. Where the facility is located within the footprint of structure excavation or proposed shoring area, the facility shall be completely exposed. The pothole shall also be large enough for the owner to identify the facility.
5. Determine the method and equipment required to perform potholing to prevent damage to existing facilities. Locate existing facilities by hand digging where necessary. At a minimum, utilize hand digging where recommended by Call USA guidelines. In addition to hand digging, use means of potholing required by facility owner and the VTA.
6. After potholing, notify the owner of the pipe, sewer, utility, or other facility to:
a. Identify the facility.
b. Verify that in the opinion of the owner, the facility potholed is the one indicated on the Contract Drawings, marked by USA, located by other owners, or located by the Contractor.
c. Verify that to the best of the owner's knowledge, no other facility is located within the area.
7. Immediately notify the VTA if the potholed pipe, sewer, utility or other facility is:
a. Not indicated on the foundation plans, or
b. In a different location from that shown on the foundation plans, utility plans, signal plans, or other plans, or
c. Located with less than five feet of clearance to the nearest point of the proposed excavation, shoring or pile to be driven.
8. Survey all potholed pipes, sewers, utilities, and other facilities exposed at each location, and accurately establish the size, location, elevation, and alignment of the facility as well as the existing grade elevation adjacent to the pothole. Prepare and submit a Shop Drawing of the potholed facility in accordance with the provisions of Article 1.06, “Submittals” herein.
9. Determine the exact location of above grade utilities and facilities. Survey all utilities and facilities including power, telephone, communication and cable television where the location or height may affect the Contractor's construction operations. At a minimum, survey the location, height, and alignment of overhead utility lines, where any construction equipment will be operated within thirty feet of the overhead utility line.
10. When approved by the VTA, backfill the pothole and replace any improvements removed during potholing including pavements, aggregate base, curbs, gutters, and sidewalks. The work required shall be performed in accordance with the details shown on the Contract Drawings, the provisions of the Caltrans Standard Specifications, and these Technical Specifications.
3.02 STRUCTURE EXCAVATIONS
A. Where a portion of existing surfacing is to be removed, the outline of the area to be removed shall be cut on a neat line with a power-driven saw to a minimum depth of 0.17-foot before removing the surfacing.
B. Follow CAL-OSHA safety regulations for sloping the sides of excavations, using shoring, bracing, and other safety features.
C. Shoring, bracing, and other temporary structures shall be designed, constructed and removed as required to perform structure excavation, reduce the amount of dewatering, conserve working space, protect existing facilities and improvements, and provide worker safety.
1. Shoring shall be removed to a depth of five feet minimum below grade; unless otherwise noted.
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2. Removal of shoring shall be accomplished in a manner that will prevent damage to the structure backfill as the shoring is removed.
D. Conform to elevations and dimensions shown on the Contract Drawings within a tolerance of ±0.05 foot for the placement of foundations and the recommended section of select engineered fill beneath structures.
E. All debris, abandoned foundations or utilities, or other poorly compacted fill materials encountered during excavation operations shall be removed in their entirety.
3.03 DEWATERING STRUCTURE EXCAVATIONS
A. Refer to Section 31 23 19 - Dewatering, for additional requirements.
B. At all times, have on the project site sufficient pumping equipment for immediate use, including standby pumps, in case other pumps become inoperable.
C. Remove all water which accumulates in excavations during the progress of work so that all work can be done in the dry and to maintain the excavation in a stable condition. Excavated areas shall be kept free from water while structures are constructed, while concrete is setting and until structure backfill has been placed to a sufficient height to prevent damage to the newly placed backfill.
3.04 COMPACTION
A. Relative Compaction Requirements:
1. Compact soil to not less than the following percentages of maximum dry density for soils which exhibit a well defined moisture-density relationship determined in accordance with ASTM D1557 and ASTM D6938.
a. Soils removed by over excavation: 95 percent minimum.
b. Structure backfill and class 2 aggregate base under footings: 95 percent minimum.
c. Backfill under concrete steps, flatwork, and slabs: 95 percent minimum.
d. Approved backfill material adjacent to and above pile caps: 95 percent minimum.
e. Structure backfill behind abutments, retaining walls, and pump stations: 95 percent minimum.
B. Moisture Control:
1. Remove and replace, or scarify and air-dry, soil material that is too wet to permit compaction to specified density.
2. Soil material that has been removed because it is too wet to permit compaction may be stockpiled or spread and allowed to dry.
3. Moisturize and thoroughly mix soil material that is too dry to permit compaction to specified density.
3.05 BACKFILL
A. General:
1. Place acceptable soil material in layers to required subgrade elevations, for each area classification using satisfactory excavated or approved imported materials.
2. Backfill excavations as promptly as work permits, but not until completion of the following:
a. Inspection, testing and acceptance of foundation work by the Independent Testing Agency.
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b. Verification of locations of underground utilities and other facilities.
c. Acceptance by the VTA of construction below finished grade including all dampproofing and waterproofing shown on the Contract Drawings.
d. Removal of concrete formwork.
e. Removal of trash and debris.
f. Backfill around concrete structures shall not proceed until after concrete has attained the greater of 2600 psi or 80 percent of specified compressive strength. Obtain the VTA’s acceptance of concrete work and attained strength prior to backfilling.
g. Do not operate earth-moving equipment within 10 feet of walls of concrete structures for purpose of depositing or compacting backfill material, except as approved. Compact backfill between 2 to 5 foot zone adjacent to concrete walls with pneumatic tampers or other approved equipment that will not damage structure. Use jumping jack or other approved equipment to compact backfill within the 2-foot zone from the walls.
B. Placement and Compaction:
1. Placing of backfill is prohibited during rain or when saturation will hinder proper compaction.
2. Place backfill materials in layers not more than 8 inches loose depth for material compacted by heavy equipment, and not more than 4 inches for material placed by hand-operated compactions.
3. Before compaction, moisten or aerate each layer as necessary to provide optimum moisture content.
4. Mix each lift thoroughly before compaction to assure a uniform distribution of water content. Native materials shall be compacted at a moisture content near the laboratory optimum.
5. Compact each layer to required relative compaction for each area classification.
6. Do not place backfill material on surfaces that are muddy, frozen or contain frost or ice.
7. Place backfill materials evenly adjacent to structures, to required elevations. Take care to prevent wedging action of backfill against structures by carrying the material uniformly around structure to approximately same elevation in each lift. Particular care shall be taken during compaction adjacent to existing basement walls to prevent structural damage.
8. Any subsequent damage to slabs, piping, concrete, structures, facilities, or other structures caused by settlement of backfill material shall be corrected and repaired by Contractor.
9. At the option of the Contractor, and to the extent that material from required excavation within the project limits is available, backfill shall be constructed of imported borrow or of material obtained from required excavation within the project limits, or a combination of borrow and material obtained from required excavation within the project limits.
10. The portion of imported borrow placed within 4 feet of the finished grade shall have a Resistance (R-Value) of not less than 40.
11. For lean concrete backfill, the excavation shall be benched or stepped as required to achieve a vertical and horizontal soil surface while the lean concrete is cast.
3.06 DISPOSAL OF EXCESS AND WASTE MATERIALS
A. Surplus excavated material shall become the property of the Contractor and shall be disposed of outside the project right of way in accordance with the provisions in GC-51 Disposal of Material .
3.07 FIELD QUALITY CONTROL
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A. Inspections: The Independent Testing Agency shall perform the following inspections.
1. Structure Excavations: Structure excavations shall be inspected for suitability to support the proposed structure prior to placement of reinforcement or concrete. In addition, the Geotechnical Engineer of Record shall inspect the structure excavations, in order to determine if there are unsuitable materials present. The final depth and horizontal limits of excavation shall be determined in the field by the Geotechnical Engineer of Record during structure excavation.
2. Structure Backfill: Structure backfill shall be inspected continuously during backfilling and compaction operations.
3. Pervious Backfill Material: Pervious backfill material shall be inspected continuously during backfilling and compaction operations.
4. Drain Rock: Drain rock shall be inspected continuously during backfilling and compaction operations.
5. Crushed Rock Backfill: Crushed rock backfill shall be inspected continuously during backfilling and compaction operations.
B. Testing Procedures:
1. Laboratory Compaction: Laboratory compaction shall be based on ASTM D1557.
2. Field density and moisture content tests of fill material shall be performed in accordance with ASTM D6938 (Nuclear Probe Methods).
C. Sampling and Testing: The Independent Testing Agency shall perform the following minimum sampling and testing during structure excavation and backfill. The VTA will direct the Independent Testing Agency to perform additional sampling and testing as deemed necessary to ensure that structure excavation and backfill is constructed in conformance with the Contract Drawings and Technical Specifications. The locations of tests will be determined by the VTA.
1. Structure Excavation: The subgrade of structure excavations shall have an unconfined compressive strength test performed using a pocket penetrometer. One test per 100 square feet of excavation shall be taken, except that no tests are required at pile foundations. The subgrade shall have a minimum strength of 2,000 pounds per square foot, unless otherwise noted on the Contract Drawings.
2. Structure Backfill, Crushed Rock Backfill, and Drain Rock: A sieve analysis shall be performed for each 100 cubic yards of structure backfill and drain rock placed.
3. Structure Backfill, Crushed Rock Backfill, and Drain Rock: A sand equivalent test shall be performed for each 100 cubic yards of structure backfill and drain rock placed behind retaining walls, bridge abutments, and bridge wingwalls.
4. Structure Backfill, Crushed Rock Backfill, and Drain Rock: A field density test shall be performed for each 50 cubic yards of structure backfill, crushed rock backfill, and drain rock placed but at least one test per lift.
5. Structure Backfill, Crushed Rock Backfill, and Drain Rock: An R-value test shall be performed for each 100 cubic yards of structure backfill and drain rock placed behind retaining walls, bridge abutments, and wingwalls.
6. Pervious Backfill Material: A sieve analysis shall be performed at the source or stockpile for the pervious backfill material to be used behind retaining walls. If the pervious backfill material is to be placed behind more than one wall at a time, only one test is required.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 31 23 43 Structure Excavation and Backfill - 14 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 31 50 00 EXCAVATION SUPPORT AND PROTECTION
PART 1 GENERAL
1.01 SUMMARY
A. Designing, furnishing, installing, maintaining, and removing excavation support and shoring systems, for excavation worker protection and for prevention of damage to or movement of adjacent structures, utilities or other facilities, including repair of any settlement-related damage.
B. Designing, furnishing, installing, maintaining, and abandoning systems for monitoring ground movements adjacent to the excavation support and shoring systems.
1.02 RELATED SECTIONS
A. Trenching for utilities is specified in Section 33 05 28 - Trenching and Backfilling for Utilities.
B. Dewatering is specified in Section 31 23 19 - Dewatering.
C. Structure excavation and backfill is specified in Section 31 23 43 - Structure Excavation and Backfill.
D. Welding and welder qualifications are specified in Section 05 12 00 – Structural Steel and Miscellaneous Metals.
1.03 MEASUREMENT AND PAYMENT
A. Full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved with excavation support and shoring systems as required for the construction of the Santa Clara Station PUP extension, as shown on the Drawings, as specified in these technical specifications, and as directed by VTA shall be considered as included in the contract Lump Sum price for Excavation Support and Shoring as shown in the Schedule of Quantities and Prices, and no separate payment will be made thereof.
1.04 REFERENCES
A. ASTM International (ASTM):
1. ASTM A36/A36M Specification for Carbon Structural Steel
2. ASTM A328/A328M Specification for Steel Sheet Piling
3. ASTM A416/A416M Specification for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete
4. ASTM A563 Specification for Carbon and Alloy Steel Nuts
5. ASTM A586 Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand and Zinc-Coated Wire for Spun-in-Place Structural Strand
6. ASTM A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
7. ASTM A690/A690M Specification for High-Strength Low-Alloy Nickel, Copper, Phosphorus Steel H-Piles and Sheet Piling with Atmospheric Corrosion Resistance for Use in Marine Environments
8. ASTM A722/A722M Specification for Uncoated High-Strength Steel Bar for Prestressing Concrete
9. ASTM C33 Specification for Concrete Aggregates
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10. ASTM F432 Specification for Roof and Rock Bolts and Accessories
11. ASTM F436 Specification for Hardened Steel Washers
12. ASTM A572/A572M Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
13. ASTM C150 Specification for Portland Cement
B. American Wood Protection Association (AWPA):
1. AWPA C3 Piles – Preservative Treatment by Pressure Processes
C. State of California, Department of Transportation (Caltrans), Office of Structure Construction, "Trenching and Shoring" Manual.
D. Post Tensioning Institute (PTI): Post-Tensioning Manual, Chapter 4, Recommendations for Prestressed Rock and Soil Anchors
E. American Institute of Steel Construction (AISC)
1. AISC 325 Steel Construction Manual
F. BNSF Railroad – Union Pacific Railroad:
1. Guidelines for Railroad Separation Projects April 2010
1.05 DEFINITIONS
A. Drainage Mat or Matting: A manufactured drainage material which is available in sheets or rolls and which may be used in excavation support systems to prevent buildup of hydrostatic pressure.
B. Lagging: A temporary or permanent excavation support structure consisting of heavy timber boards, planking, sheathing, or reinforced precast concrete planks secured in place between adjacent soldier piles.
C. Proof Load: An applied load 25 percent greater than the design load, imposed by load test.
D. Secant Wall: An excavation support system consisting of a series of drilled, spaced soldier piles and intersecting, unreinforced concrete drilled piers or drilled shafts arranged in an arched configuration, filled with a lean concrete-mix cement and sand grout.
E. Sheeting: A line of timber or planks, plain or tongue-and-grooved on sides, driven endwise into the ground to protect sub grade operations.
F. Sheet Piling: Interlocking steel sheet piling installed vertically to hold back earth or retain soil and to keep water out of a foundation excavation. May be a temporary or permanent structure.
G. Shores/Shoring: Props or posts of timber or other material in compression, or bending, used for temporary support of excavations.
H. Slurry Wall: A reinforced concrete wall constructed by filling a trench with tremie concrete. Tremie concrete displaces the bentonite slurry already in the trench, forming a concrete barrier, when set, which retains the earth or soil on the exterior side of the slurry wall, and permits excavation and removal of the soil on the interior side of the wall.
I. Soil Anchor: A prestressed frictional anchorage device, consisting of a high-strength steel tendon, fitted with a stressing anchor at one end and an anchor device, permitting force transfer to the soil, at the other end, installed in a prepared hole that is drilled or driven into the ground.
J. Soil Mix Wall: A multiple-augered, cement-grout reinforced earth technique, incorporating soldier pile reinforcement, whereby in-situ soils are mixed in place with cement grout, forming a row of
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overlapped soil cement columns, used for groundwater cutoff and as a reinforced soil wall excavation support system.
K. Soldier Piles: Vertical steel WF or HP shapes installed to take the side thrust of horizontal lagging, retained soil and ground water. Also called soldier beams.
L. Strut: A brace or supporting member which resists thrusts in the direction of its own length; may be vertical, diagonal, or horizontal.
M. Tie-Backs: An excavation-face support obtained by grouted steel bars, wire strands, or tendons, with or without a dead-man, in combination with face-retaining or bearing steel plates, board timbers, or shotcrete reinforcement.
N. Tremie Concrete: Concrete placed by means of tremie equipment, for depositing concrete under water and thereby displacing bentonite slurry in a slurry-wall trench or excavation.
O. Waler: A horizontal beam used to brace or support vertical sheeting or sheet piling.
P. Railroad Zone of Influence: The zone defined on the Contract Drawings within which all excavations shall be supported by systems designed and constructed in accordance with Railroad requirements and limitations.
1.06 DESIGN CRITERIA
A. Basic unit stresses for the working stress design of excavation support structures shall be taken from the following references:
1. Structural Steel: AISC 325, Steel Construction Manual.
2. Reinforced Concrete: ACI 318/318R, Building Code Requirements for Structural Concrete and Commentary.
3. Timber: California Building Code, 2007.
B. Design excavation support systems to support earth pressures, utility loads, equipment, applicable traffic and construction loads, and other surcharge loads in a manner which will allow the safe and expeditious construction of permanent structures without movement or settlement of the ground and in a manner which will prevent settlement of and damage to, or movement of, adjacent buildings, structures, utilities, or other facilities during the various stages of construction. Include evaluation of the effects of dewatering and flooding of excavation.
C. Design each component to support the maximum loads which may occur during various stages of construction. Include lateral pressure due to earthquake. For the purpose of this Section, the design load means the maximum load the support member will have to carry in actual practice, and the proof load means a specified test load greater than the design load.
D. Support of excavation structures shall be analyzed for all conditions which may occur during the various stages of construction. Among others, these conditions include: installation, relocation and removal of struts; flooding and dewatering of excavations; and concreting of excavation bottom. The loading conditions on opposite sides of a cut may not be equal. In this case, both sides shall be designed for and be compatible with the larger loading. The conditions to which the design applies shall be indicated on the Shop Drawings.
E. Carry the bottom of support system to a depth below the main excavation as adequate to prevent lateral and vertical movement. Where additional excavation is carried below the main excavation, provide means to prevent movement of the main excavation supports.
F. Design the excavation support system to allow the required free excavated space for workers, concrete formwork, wall waterproofing, and drainage systems.
G. Design excavation support systems for staged installation and removal to conform to construction and
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backfill sequences as indicated. Leave excavation support systems in place, except as specified otherwise herein.
H. Employ walers, struts, and tieback anchors for horizontal support as required for excavation faces to be retained by soldier piles and lagging, sheet piles, soil-mix walls or by concrete slurry walls. Provide struts with intermediate vertical and horizontal supports as required to prevent buckling. Struts shall be preloaded by wedging or jacking to 50 percent of the design load.
I. Provide diagonal bracing where needed for stability of the system. Use timber lagging, steel sheeting, or reinforced precast concrete sheeting or planking. Tiebacks and soil anchors will not be permitted to extend outside of the VTA right-of-way property limits, unless the Contractor has obtained written (notarized) permission from adjacent property owners to use their properties for such purposes. Tiebacks and soil anchors will not be permitted to extend beneath railroad tracks or within the railroad zone of influence unless the Contractor has obtained written permission from UPRR and Caltrain.
J. Design piles or other vertical support members to be incorporated in a system employing tiebacks or soil anchors to have the capability of resisting vertical components of tieback loads without significant settlement during any stage of excavation and construction.
K. Timber support systems, except lagging, shall be employed only for utilities and minor structures. Timber supporting members and lagging to be left in place shall be pressure-treated with wood preservative.
L. Where lagging is employed, design the lagging to safely support the indicated loads. Minimum thickness of lagging between soldier piles spaced up to 7 feet on center shall be 3 inches for excavations of depth up to 25 feet, and 4 inches for excavations of depth in excess of 25 feet.
M. Provisions shall be made to protect struts from excessive deformations and stress variations induced by temperature fluctuations.
N. In reviewing submittals, the VTA will use the criteria and loads for structures indicated on the Contract Drawings. The conditions to which the design applies shall be indicated on the Shop Drawings.
O. Special requirements within railroad zone of influence:
1. All excavation shoring work within the Railroad Zone of Influence shall comply with the provisions and restrictions of Section 01 35 15 - Union Pacific Railroad Interface.
2. All temporary shoring systems that impact railroad operations and/or support the railroad embankment shall be designed and constructed per the current version of the BNSF Railroad – UPRR Railroad: Guidelines for Temporary Shoring.
3. Additional requirements specified in BNSF Railroad – Union Pacific Railroad: Guidelines for Railroad Separation Projects.
4. Track ballast shall be protected against contamination by Contractor operations. Contaminated ballast shall be replaced immediately and at the Contractor’s expense.
1.07 SUBMITTALS
A. Pre-construction Surveys: Submit pre-construction surveys as specified in Article 1.09 A herein.
B. Movement Detection Procedures: Submit procedures for detection of movement as specified in Article 3.01 herein.
C. Excavation Support Systems Program:
1. Prepare and submit a written schedule and procedure, along with detailed Shop Drawings, of the proposed excavations and excavation support systems.
2. Include installation procedures; method of concrete placement; excavation sequence; interface
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details; protection measures for existing structures and facilities; instrumentation and monitoring procedures to check performance, sequence, and method of removal; and contingency plans for excessive wall or foundation movements.
3. The program shall take into account that excavations cannot extend beyond the VTA right-of-way into adjacent properties above or below grade, unless otherwise indicated. Where tie-backs, soil anchors or similar support systems are required, secure permission from adjacent property owners to install such temporary and permanent systems. If the Contractor is unable to secure such permission, support systems shall be installed completely within the VTA right-of-way.
4. Any such permission from adjacent property owners shall be in writing, and the owner's signature, granting such permission, shall be witnessed and properly notarized. Certified copies of all such permissions shall be submitted to the VTA for record purposes.
D. Shop Drawings: Submit Shop Drawings and specifications for support systems, lagging, tieback anchors, and internal bracing. Include the following:
1. Specific description of field quality control measures.
2. Details of interface with permanent structures.
3. Detailed description of tie-back soil anchors and wales, if used, and the proposed installation procedure, including method of grouting anchors, grout type, and mix proportions.
4. Details of bracing struts and wales, if used, and the proposed installation procedures, including method and sequence of preloading.
5. Details of required preloading systems, pre-stressing systems, load measuring facilities, systematic schedule of preloading and pre-stressing operations, and sequence of construction.
6. Method and details for securing lagging in support system openings.
7. Proposed method of providing for utility penetrations.
8. Assembly and erection details of members and connections for the system.
9. Review by the VTA of the excavation support system Shop Drawings or inspection performed by the VTA will in no way relieve the Contractor of full responsibility for the excavation support system.
E. Calculations: Submit appropriate design calculations to support Shop Drawings. Include maximum theoretical deflections of supporting members. Include calculations indicating the expected magnitude of vertical and lateral movement.
F. Professional Engineer's Certification: The excavation support systems program, Shop Drawings, calculations, and test reports shall be prepared, sealed, and signed by a professional civil or structural engineer currently registered in the State of California. Select an engineer with experience in the design and construction of excavations and excavation support systems and shall submit the selected engineer's resume demonstrating such experience.
1. Where Caltrans approval for excavation support or shoring is required, submit check calculations and related documents prepared, signed, and sealed by an independent civil or structural engineer currently registered in the State of California. The check documents shall confirm the essential elements of the design and shall be prepared in accordance with the Caltrans Trenching and Shoring Manual.
G. Jack Gage Calibration Charts: Submit data for the pressure gage and jack combinations certified by an accepted testing laboratory not earlier than 14 days prior to start of use for preloading.
H. Test Reports: Submit reports of performance tests and proof loading tests of soil anchors, certified by a professional civil or structural engineer currently registered in the State of California.
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I. Restoration: Submit procedures, methods, and materials lists for restoration of structures and facilities.
1.08 REGULATORY REQUIREMENTS
A. Regulatory requirements that govern the work of this Section include the following governing codes:
1. California Code of Regulations, Title 8, Chapter 4, Subchapter 4 — Construction Safety Orders, and Subchapter 19 — Trench Construction Safety Orders.
2. California Code of Regulations, Title 24, Part 2, California Building Code, 2007, Chapter 33 and Appendix Chapter 33, and Structural Chapters 18 and 18A.
3. Excavations, regardless of depth, shall comply fully with the requirements of Sections 3307.1, 3307.2 and 3307.3 of the California Building Code.
1.09 SITE CONDITIONS
A. Pre-construction Surveys: Submit to the VTA, for review and approval, pre-construction surveys for existing structures and facilities located above or adjacent to the new construction and which may be affected by the work. These surveys shall include photographs, maps, plans, written descriptions, and surveyed foundation levels as necessary to fully document pre-construction conditions.
B. Provision for Contingencies:
1. Monitor performance of components of excavation support systems, both for vertical and horizontal movement, at regular intervals. Provide strut-monitoring devices, installed in accordance with the manufacturer's instructions, at locations indicated or required.
2. Provide and secure approval for a contingency plan, or alternative procedures, to be implemented in the event of an unfavorable performance of the system.
3. Have materials and equipment available to implement the approved contingency plan.
C. Existing Utilities:
1. Proceed with caution in areas of utility facilities and structures. Expose existing utilities by hand- excavation or by other methods acceptable to the utility owner.
2. If existing utility facilities and structures interfere with proposed method of excavation support, modify or relocate such facilities in accordance with the utility owner's recommendations.
D. Loads: Lateral loads shall not be transferred to new concrete structures by removal of excavation support systems until the new structure has attained its 28-day compressive strength, or except as otherwise indicated.
1.10 QUALITY ASSURANCE
A. Inspection by City and Other Governing and Regulatory Authorities: Allow the VTA and other governing and regulatory authorities to perform testing and inspection of materials and practices associated with construction within their jurisdiction on the Worksite during business hours for the purpose of ensuring that the Work is in compliance with requirements of the City Code and other local, State and Federal laws and regulations.
PART 2 PRODUCTS
2.01 EQUIPMENT AND FACILITIES
A. Furnish all tools, equipment, devices, appurtenances, facilities, and services for the construction and removal of excavation support systems as indicated or required. Jacks and jacking equipment shall be more than adequate for the imposed loads and shall be provided with calibrated gages.
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1. Each jack shall be equipped with either a pressure gage or a load cell for determining the jacking force. Pressure gages shall have an accurately reading dial at least 6 inches in diameter. Each jack shall be calibrated by a private laboratory approved by the VTA within 6 months prior to use and after each repair, unless otherwise directed. Each jack and its gage shall be calibrated as a unit with the cylinder extension in the approximate position that it will be at final jacking force and shall be accompanied by a certified calibration chart. Load cells shall be calibrated and provided
2.02 MATERIALS
A. General: Materials for excavation support systems may be new or used, provided they are sound and free from strength-impairing defects.
B. Soldier Piles/H-Piles: ASTM A690/A690M, ASTM A36/A36M, or ASTMA572/A572M shapes of sizes indicated on approved Shop Drawings. Provide soldier piles or H-piles of sizes required to contain lagging, sheeting, or planking as indicated.
C. Steel Sheet Piling: ASTM A328/A328M, continuous interlocking type, of sizes indicated on approved Shop Drawings, with suitable handling holes.
D. Timber: Structural grade lumber with a minimum fiber stress in bending of 1100 psi.
1. Lagging: Heavy timber boards or planking of sizes indicated on approved Shop Drawings. Lagging boards or planking shall be secured and contained in place by H-piles (soldier piles), with boards inserted in the recesses between the H-flanges.
2. Posts, Struts, and Walers: Heavy timber posts, beams, stringers, and planking, as required, of sizes indicated on Shop Drawings.
3. Preservative Treatment: Wood members required to be left permanently in place shall be pressure-treated with preservative material in accordance with AWPA C3.
E. Concrete: Refer to Section 03 11 00 - Concrete Forming, Section 03 21 00 - Reinforcing Steel, Section 03 30 00 - Cast-In-Place Concrete, and Section 03 05 10 - Portland Cement Concrete, for requirements. Provide concrete with a minimum cement content of 6.5 sacks per cubic yard and a minimum compressive strength of 4000 psi at 28 days unless otherwise indicated. Lean concrete, where indicated, shall conform to requirements of Section 03 05 10 - Portland Cement Concrete.
F. Tremie Concrete for Slurry Walls: Provide concrete with a minimum compressive strength of 4000 psi at 28 days with coarse aggregate of one-inch maximum size (ASTM C33 size No. 57) unless otherwise indicated. Slump at placement: 5 to 6 inches, plus or minus one inch.
G. Bentonite Slurry: Natural Wyoming type granular bentonite, graded so that 90 percent will pass a 20 mesh sieve and less than 10 percent will pass a 200 mesh sieve, mixed with water. Bentonite slurry shall be a stable suspension of powdered bentonite with a minimum density of 65 pcf and a maximum density of 85 pcf.
H. Tiebacks:
1. Steel Bars or Rods: ASTM A615/A615M, Grade 60, threaded steel bars or bars conforming to requirements of ASTM A722/A722M or ASTM F432, as applicable of sizes indicated on approved Shop Drawings. Provide complete with header or face plates conforming to ASTM A36/A36M where required, nuts conforming to ASTM A563, and washers conforming to ASTM F436, as indicated or required.
2. Wire Strands: Single-strand or multiple-strand galvanized steel wire conforming to ASTM A416/A416M or ASTM A586, as appropriate.
3. Grout: Pumpable concrete, with minimum compressive strength at 28 days of 4,000 psi. Concrete mix shall contain 6.5, 94-pound sacks of cement per cubic yard minimum. Aggregate size shall be commensurate with the space being filled. Comply with requirements of Section 03 05 15 - Portland Cement Concrete, as applicable.
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I. Manufactured Assemblies: The maximum loadings and deflections used on jacks, brackets, columns, joists and other manufactured devices shall not exceed the manufacturer's recommendations except that the dead load deflection of the joists used at locations other than under deck slabs between girders shall not exceed 1/240 of their spans. If requested by the VTA, furnish engineering data from the manufacturer verifying the manufacturer's recommendations or perform tests as necessary to demonstrate the adequacy of the devices proposed for use.
2.03 SOIL ANCHORS
A. Product Standards: Comply with applicable requirements of PTI Post-Tensioning Manual, Chapter 4, Article 4.5, Soil Anchors. Provide soil anchors complete with stressing anchorage and bearing plates, sheathing and prestressing steel, grout and grout tube (if required), and the required drilling equipment.
B. Bars: ASTM A722/A722M deformed prestress thread bars, with a minimum ultimate tensile strength of 150 ksi.
C. Wire Strand: ASTM A416/A416M, Grade 270, low relaxation, seven-wire stress-relieved strand, with ultimate tensile strength of 270 ksi.
D. Anchorage Grout: Portland cement, aggregate, water, and a manufactured noncorrosive expansive admixture, of suitable aggregate size and consistency for pressure grouting. Grout shall develop a minimum compressive strength at 28 days of 4,000 psi. The Contractor may substitute a high-strength, non-shrink, nonmetallic cementitious grout conforming to applicable requirements of Section 03 6200 - Non-Shrink Grout.
2.04 SECANT WALL SYSTEM
A. Structural Steel for Soldier Piles: ASTM A690/A690M H-piles or ASTM A36/A36M or ASTM A572/ A572M wide-flange I-beams or H-beams as applicable.
B. Cement Grout: Two sacks of ASTM C150, Type I, Type II, or Type III cement per cubic yard of grout, combined with ASTM C33 fine aggregate, to provide a flowable filler mix.
C. Steel Casings: Provide temporary drill casings where required to prevent caving of unstable soils.
2.05 SOIL MIX WALL SYSTEM
A. Soldier Piles: As specified above in Article 2.04.A, as applicable.
B. Materials and Equipment: Provide all materials and special equipment as required to perform the augering, mixing, and grout injection and to complete the soil-mix wall system.
C. Soil-cement shall have a minimum unconfined compressive strength of 100 psi at time of excavation adjacent to soil-mix wall.
PART 3 EXECUTION
3.01 DETECTION OF MOVEMENT
A. For each existing structure or facility within a zone of influence extending upward from the bottom of the excavation on a slope of 2 horizontal to 1 vertical, install settlement detection devices on each footing, foundation, wall, or other feature to be monitored. Settlement detection devices shall be capable of being read to an accuracy of 0.005 foot.
B. Establish settlement points at least two weeks prior to excavation support system installation. A minimum of two baseline readings shall be recorded prior to excavation support system installation. Take and record readings not less than once per week during performance of the work.
C. Stop work, notify the VTA, and take immediate remedial action if movement of the existing structure occurs during performance of the work. All construction activities shall be immediately halted when the settlement of any structure or facility reaches 0.3 inch, and shall not be resumed until after
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implementation of approved remedial measures.
D. Upon completion of the work, take weekly readings of the measurement points for a period of four weeks, or longer if movement persists, and report the results to the VTA.
E. The detection of movement shall be performed by a qualified licensed land surveyor or civil engineer registered in the State of California.
F. Maintain and protect all instrumentation and monitoring systems and equipment. Any damaged instrumentation or monitoring equipment or system shall be replaced immediately by the Contractor.
3.02 INSTALLATION REQUIREMENTS
A. Install excavation support systems for safety and preservation of existing improvements. Excavation support systems shall consist of structures designed by the Contractor to support the various excavations.
B. Construct support systems in accordance with approved Shop Drawings and in a manner that will ensure that supported faces will be stabilized. Provide for additional soil pressure caused by adjacent surcharge loads.
C. Welding and welder’s qualifications shall conform with applicable requirements of Section 05 12 00- Structural Steel and Miscellaneous Metals.
D. No part of the excavation support systems that will remain permanently in place or be in place during construction of permanent structures shall be placed or allowed to deflect within the limits of permanent structures.
E. Piles and vertical members of excavation support systems shall be within 1.0 percent of plumb and within 2 inches of the plan location indicated on approved Shop Drawings.
F. Install lagging members as indicated and in a manner which will prevent loss of soil. Wedge lagging members against undisturbed earth or place compacted fill or slurry fill into voids behind lagging. If unstable material is encountered, suitable measures shall be taken to retain it in place or otherwise prevent soil displacement.
G. Do not use combustible waste or similar material for packing or soil retention in excavations.
H. All excavation support wall systems that will go below the design groundwater table shall be constructed of continuous excavation support systems capable of cutting off groundwater inflow into the excavation. The excavation support systems shall penetrate to the minimum depth shown on the Contract Drawings. Properly constructed diaphragm wall systems such as soil-mix walls, secant walls and slurry walls will be suitable for this purpose. Fully interlocked sheet pile systems (where allowed) may also be suitable for this purpose.
I. A sufficient quantity of material shall be on hand for sheeting, shoring, bracing and other operations for protection of work and for use in case of accident or emergency.
J. All components of excavation support systems that may be subjected to flooding shall be secured by bolting, screwing or similar mechanical connection to prevent these components from becoming disturbed under such conditions.
3.03 INSTALLATION OF SOLDIER PILES AND LAGGING
A. Provide pre-bored holes for soldier piles adequate to accommodate pile sections indicated. Extend holes to depth below level of adjacent sub grade as necessary to provide firm bearing. Piles may be driven below the bottom of the invert of the completed structure if soil conditions are favorable for the intended purpose.
B. After a pile has been seated plumb in the pre-bored hole, encase it with lean concrete from the bearing tip to level of adjacent sub grade excavation.
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C. Provide timber lagging or reinforced precast concrete members, secured in place to soldier piles, contained in the recesses between the H-flanges. Install lagging horizontally with no gaps between boards or precast members.
D. As installation progresses, backfill voids between excavation face and lagging with sand or soil rammed into place. Provide drainage matting or burlap where necessary to allow drainage of ground water without loss of soil or sand packing.
E. If unstable material is encountered during excavation, take suitable measures to contain such material in place and to prevent soil displacement.
3.04 INSTALLATION OF SHEET PILING
A. Drive sheet piles in plumb position, with each pile interlocked with adjoining pile for its entire length so as to form a continuous diaphragm throughout the length of each run of wall. Drive to depth indicated.
B. Provide driving method so that interlocking members can be extracted, if required, without injury to adjacent fills.
C. Do not drive piles within 100 feet of concrete less than seven days old.
D. Methods of driving, cutting, and splicing shall conform with approved Shop Drawings and procedures.
3.05 CONSTRUCTION OF SLURRY WALLS
A. Slurry Trench Equipment:
1. Employ equipment capable of removing foreign material from the trench, including boulders. Arrange equipment to permit free vertical passage of slurry within the trench, and to prevent development of suction or pressure.
2. Furnish trench inspection tools or devices adequate to assure that the trench has been excavated to dimensions indicated on approved Shop Drawings, and that settled cuttings and excavated material have been removed.
3. Employ slurry mixing equipment capable of producing, with mechanical agitation, a stable suspension of bentonite and water. Transport bentonite slurry to trench panels by temporary pipelines or by other suitable methods.
4. Furnish equipment to provide circulation and agitation of the slurry throughout the full depth of excavated panels. Do not agitate slurry pneumatically.
5. Employ slurry reclaiming equipment which will remove detrimental quantities of excavated material from the slurry to assure use of clean slurry in trenches. Recirculate reclaimed slurry to trenches in a continuous operation.
6. Monitor slurry and control its capability for retaining solid particles in suspension.
B. Construction:
1. Construct slurry trench walls by displacing bentonite slurry with tremie concrete.
2. Construct walls of reinforced concrete or plain concrete with embedded structural steel, or unreinforced plain concrete as indicated on approved Shop Drawings. Where soldier piles are used in construction of walls, such piles may be considered as reinforcement.
3. Provide sufficient embedment of walls below subgrade of adjacent excavation to prevent heave, loss of ground due to piping under the wall, or lateral movement of the wall.
4. Perform preparatory work to discover, protect, maintain, relocate, and restore utility facilities and structures near the slurry walls.
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5. Employ construction methods that assure that slurry materials provided during trench excavation and placing of tremie concrete are contained and controlled to prevent leakage and spillage of slurry and excavated materials into basements, vaults, utilities, and other facilities.
6. Excavate slurry wall trenches in panels of widths and depths indicated on approved Shop Drawings, with a maximum panel length of 18 feet. Reduce panel length when excavating adjacent to facilities sensitive to settlement.
7. Maintain wall panels full of slurry to within the limits indicated on approved Shop Drawings during excavating operations and until tremie concrete placement is completed. Continue construction with two panel spaces between two slurry panels under active excavation.
8. Keep slurry circulated or agitated during drilling and excavating, and immediately before concrete placement. Maintain slurry requirements at all times, including nonworking periods and stoppages. Provide continuous circulation or agitation, if necessary, to meet these requirements.
9. Place concrete by tremie pipe, either by gravity flow or by pumping. Equip tremie pipe with a bottom valve to prevent mixing of slurry with the concrete inside of tremie pipe.
10. Start placement of tremie concrete in excavated panels within 12 hours of completion of excavating the panels, and proceed continuously until completion of concrete placement.
11. Construct tight joints between adjacent concrete placements by properly excavating the trench and cleaning abutting face of hardened concrete, or surfaces of structural members if used.
12. Seal leaks encountered in walls as the excavation progresses, if such leaks permit penetration of fines and loss of soil.
13. Dispose of unsuitable excavated material and debris in accordance with the requirements of Section 31 11 00 - Clearing and Grubbing.
14. Dispose of slurry waste offsite in accordance with applicable regulations of governing authorities.
3.06 SUPPORT SYSTEMS WITH BRACING AND TIEBACKS
A. Requirements: Provide walers, struts, rakers, shores, and tie-backs as necessary to support excavation faces retained by posts, soldier piles, or concrete slurry walls.
B. Internal Bracing:
1. Provide walers where required, at each level of bracing. As excavation proceeds, place walers on open face of support system wall. Wedge, drypack, and otherwise provide tight bearing between walers and support system wall, with ample bearing areas to provide uniform transfer of loads.
2. Provide struts with intermediate bracing as needed to enable struts to carry the design load without distortion or buckling.
3. Provide diagonal bracing as needed for stability of the system.
4. Include web stiffeners, plates, angles, or bracing as needed to prevent rotation, crippling, or buckling of connections and points of bearing between structural members. Allow for eccentricities caused by field fabrication and assembly.
5. Install and maintain internal bracing support members in tight contact with each other and with the surface being supported.
6. Design internal bracing support members for maximum loads which may occur during excavation and removal stages.
7. Struts shall be preloaded in accordance with the approved Shop Drawings.
C. Tie-Backs:
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1. Provide tie-back anchorage system as indicated or required. Install tie-back system in accordance with approved Shop Drawings.
2. Tie-backs shall not extend beyond the VTA right-of-way and easement properties, except as specified in Article 1.07.C.3 herein.
3. Install manufactured tie-back or anchorage systems in accordance with the manufacturer's instructions.
4. Stress installed tie-backs to proof loads indicated on approved Shop Drawings. Tiebacks which lose more than five percent of applied proof loads or deflect more than 6 inches shall be reinforced and strengthened to withstand applied proof loads.
5. Apply proof loads as herein specified, and provide means to measure each load application within an accuracy of plus or minus five percent.
6. After load-test approval, reduce tie-back proof load to the design load, and encase tieback anchorage and bars or rods in grout, lean concrete, or compacted backfill, as indicated, maintaining the design load until tie-backs are fixed in place. Provide a method of fixation that will limit the load loss to not more than five percent of the design load in the transfer of loads from the jacks to the support system.
D. Proof Loading:
1. Perform proof loading of internal bracing members and tie-backs, including struts, shores, and similar members. Employ procedures that will produce uniform loading on bracing members and tie-backs without inducing eccentricities or overstressing and distortion.
2. Perform and accomplish proof loading by approved load testing or jacking procedures. Submit detailed Shop Drawings of proposed load testing and jacking procedures.
3. Apply proof loads as soon as possible after bracing and tie-backs are installed in accordance with methods, procedures, and sequences as indicated on approved Shop Drawings.
4. Coordinate excavation work with installation of bracing and tie-backs and with the application of proof loading. Provide steel shims and wedges, welded or bolted in place, to help maintain the proof-loading force on the bracing and tie-backs after release of load-testing pressures.
E. Creep Tests on Tie-Backs:
1. Load test tie-backs for creep at each level of support in the excavation, at the first installation on each side of the excavation, at horizontal intervals not exceeding 500 feet, and wherever a significant change occurs in the soil in which the tie-backs are anchored.
2. Perform a 24-hour load test on one out of each 100 tie-back anchors. Perform tests by applying the proof load and maintaining it constant for 24 hours.
3. Keep records of axial movement with incremental applications of the load, and the amount and time of load fall-off with no pumping of the jack or axial movement during the 24-hour period that the proof load on the anchor is maintained.
4. Redesign the tie-back system to attain specified limits if, during the 24-hour period, the axial deformation of the tie-back system exceeds 0.20 inch, or the decrease in jack pressure without pumping is more than five percent after correcting for temperature changes.
3.07 SOIL ANCHORS
A. Requirements: Provide soil anchors for all locations indicated on approved Shop Drawings. Soil anchors may be used for tie-backs specified in Article 3.06 herein as appropriate.
B. Installation and Testing Standards: Soil anchors shall be installed and tested in accordance with
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applicable requirements of PTI Post-Tensioning Manual, Chapter 4, Article 4.5, Soil Anchors.
C. Installation:
1. Angle tolerances shall be within one degree of those indicated on approved Shop Drawings.
2. Deviation from planned orientation shall be no more than 2 inches in 10 feet.
3. Drilling of anchor holes shall be by a proven system that utilizes a hollow stem auger or other approved method as appropriate for the soil conditions.
4. Clean or redrill any hole that caves, sloughs, or otherwise does not provide suitable anchorage.
5. Use spacers or sheathing to ensure that anchor tendons do not contact wall of drill hole. Maintain at least 2 inches of grout space around each tendon.
6. Do not extend adjustment screws on cross braces or centerhole jacks used for loading soil anchors beyond manufacturer's recommendations or two-thirds of threaded length, whichever is more restrictive.
7. Each jack used to stress tendons shall be equipped with a pressure gage for determining the jacking load applied to the tendon. Pressure gages shall have an accurate reading dial at least 4 inches in diameter or a clearly readable digital display.
8. The tensioning process shall be conducted so that the tension being applied and the elongation of the pre-stressing steel may be measured at all times. A record shall be kept of gage pressures, elongations, and anchorage seating values and shall be submitted for record as specified in Section 01 78 39 - Project Record Documents.
9. Grout shall be injected at the lowest part of the anchor. Grout may be placed through the stem of the auger, through grout hoses, tubes, or pipes. Non-rigid hoses shall be attached to the lower end of the anchor with a break-away attachment that permits the hose to be removed as grout is placed. Pump pressure shall be maintained as grout hose or tube is removed.
10. Locate soil anchors so as not to damage or destroy active utility facilities. Any deviation shall obligate the Contractor to repair, replace, or otherwise restore such damage to the satisfaction of the utility owner.
D. Tests: Test each soil anchor after being grouted for its entire bond length and after grout has attained a minimum compressive strength of 3000 psi. One anchor or one percent of anchors in any wall section, whichever is greater, shall be designated as a performance test anchor. Performance test anchors shall be installed and tested prior to placement of production anchors. All production anchors shall be proof tested.
3.08 SECANT WALLS
A. Design and construct secant walls as indicated or required. Drill beam holes and intersecting pier holes in sequence selected. Provide arched configuration of piers between beams. Provide temporary casings if necessary to prevent cave-ins of unstable soils. Set and align soldier piles where they occur. Place toe concrete in beam holes to within 6 inches of the design sub grade. Fill balance of beam holes and intersecting pier holes with a cement grout filter mix. Concrete and cement grout may be end- dumped, provided drill holes remain stable during placement.
3.09 SOIL MIX WALLS
A. Design and construct soil-mix walls as indicated or required. Construct walls in the ground without excavating and replacing the in-situ soils. In-situ soils shall be mixed in place with cement grout, produced by multiple-shaft augering equipment, forming a row of overlapped soil-cement columns or piers that make a continuous wall. Install regularly spaced soldier piles for wall reinforcement as indicated on approved Shop Drawings. Carry toe of wall and soldier piles at least 3 feet below design sub grade.
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3.10 REMOVAL OF EXCAVATION SUPPORT SYSTEMS
A. If removal is required wholly or in part, perform such removal in a manner that will not disturb or damage adjacent buildings, structures, construction, or utilities. Fill voids immediately with lean concrete or with approved backfill compacted to the relative compaction for the location as specified in Section 31 23 43 - Structure Excavation and Backfill.
B. Excavation support systems shall be left in place until the concrete walls and structures to receive the transferred loading from the removed support system have reached 100 percent of the specified compressive strength at 28 days. Demonstrate with strength test results that the concrete has reached the specified strength before load transfer from the support system to the concrete structure may be performed.
C. Secant walls and soil-mix walls shall be left in place.
D. Remove from the site all elements of excavation support systems to the following minimum depths below the level of surfaces to be constructed or restored:
1. Between intersection of cross streets: 6 feet.
2. Across intersection of cross streets: 8 feet.
3. At temporary access ramps: 8 feet.
E. Repair damage to properties resulting from removal work.
3.11 RESTORATION
A. Restore existing structures and improvements to conditions equivalent to those existing prior to the start of work, including repair of settlement-related damage.
END OF SECTION
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SECTION 32 11 23 AGGREGATE BASE COURSE
PART 1 GENERAL
1.01 SCOPE
A. This Section includes requirements for furnishing, spreading, and compacting aggregate base, including soil stabilization geotextile, where indicated on the Drawings.
1.02 RELATED SECTIONS A. SC-6, Contract Data Requirements B. SC-33, Modifications to General Conditions, GC-47 Quality Assurance C. SC-51, Technical Submittal List D. Section 32 12 16, Asphalt Concrete Paving E. Section 32 16 21, Concrete Curbs, Gutters and Walks F. Section 03 05 15, Portland Cement Concrete
1.03 MEASUREMENT AND PAYMENT
A. The contract price paid per cubic yard for Aggregate Base Class 2 listed in the Schedule of Quantities and Prices shall include full compensation for furnishing all labor, materials (including water in the material at the time of weighing as specified herein) including soil stabilization geotextile, tools, equipment, and incidentals, and for doing all the work involved in constructing aggregate base, complete in place, as shown on the drawings, and as specified in the Standard Specifications and these technical specifications, and as directed by VTA.
B. Full compensation for furnishing and placing aggregate base under curbs, sidewalks, driveways, bus pads, landscape concrete, curb ramps, headers and traffic island shall be considered as included in the contract prices paid for the various items of work and no additional compensation will be allowed therefor.
1.04 REFERENCES A. State of California, Department of Transportation (Caltrans): Standard Specifications, Section 26, Aggregate Bases B. State of California, Department of Transportation (Caltrans): Standard Test Method, Calif. Test 201, Soil and Aggregate Sample Preparation 1.05 SUBMITTALS A. Submittals’ General Requirements: 1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples. B. The Contractor shall submit certified test results for aggregate base material. Tests should be performed in accordance with the California Test Methods herein specified. C. Submit a Certificate of Compliance for each type of soil stabilization geotextile.
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
PART 2 PRODUCTS
2.01 SOURCE QUALITY CONTROL
A. Aggregate Base for use under the tunnel, ramp and foundations shall conform to the provisions for Class 2 Aggregate Base in Section 26, “Aggregate Bases,” of the Caltrans Standard Specifications. Aggregate base Class 2 for other uses shall conform to the requirements of Section 26, “Aggregate Base,” of the City of San Jose Standard Specifications.
B. The Contractor shall perform sampling and tests of the aggregate base material in accordance with the Calif. Test Methods herein specified, to determine compliance with specified requirements. Samples will be taken from material delivered to the site, and will be prepared in accordance with California Test Method No. 201.
2.02 SOIL STABILIZATION GEOTEXTILE
A. Soil stabilization geotextile shall conform to the requirements for Subgrade Enhancement Geotextile fabric in Section 88, "Geosynthetics," of the Caltrans Standard Specifications and these Technical Specifications.
1. Geosynthetics for this project shall be ultraviolet ray (UV) protected.
PART 3 EXECUTION
3.01 EXAMINATION
A. Contractor shall call for an inspection by the Engineer and obtain acceptance of the prepared subgrade or subbase before proceeding with the aggregate base course.
B. The subgrade or subbase to receive aggregate base course, immediately prior to spreading, shall conform to the compaction and elevation tolerances specified and indicated for the material involved and shall be free of standing water and loose or extraneous material. Compaction criteria do not apply to the subgrade to receive base course used the tunnel.
3.02 INSTALLATION
A. Aggregate base course shall be of uniform thickness to dimensions indicated after compaction.
B. Compaction expressed in percentages in this section refers to the maximum wet density determined by California Test Method No. 216, Part II.
3.03 SPREADING OF MATERIAL
A. Aggregate for base course shall be delivered as uniform mixture of fine and coarse aggregate and shall be spread in layers without segregation.
B. Aggregate base course material shall be free of pockets of large and fine material. Segregated materials shall be remixed until uniform.
C. Aggregate base material shall be moisture-conditioned to maintain moisture content within plus or minus two percent of optimum moisture content as determined by California Test Method No. 216, Part II.
D. Aggregate base course 6 inches and less in thickness may be spread and compacted in one layer. For thicknesses greater than 6 inches, the base course aggregate shall be spread and compacted in two or more layers of uniform thickness not greater than 6 inches each.
3.04 COMPACTING
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A. Relative compaction of each layer of compacted aggregate base material shall be not less than 95 percent as determined by California Test Method No. 216, Part II.
B. Thickness of finished base course shall not vary more than 0.50 inch from the indicated thickness at any point. Base which does not conform to this requirement shall be reshaped or reworked, watered, and recompacted to achieve compliance with specified requirements.
C. The surface of the finished aggregate base course at any point shall not vary more than 0.50 inch above or below the indicated grade.
3.05 FIELD QUALITY CONTROL
A. When the results of either or both the Aggregate Grading and Sand Equivalent tests do not meet the requirements specified for Operating Range but meet the Contract Compliance requirements, placement of the aggregate base may be continued for the remainder of that day.
1. Do not start another day’s work until tests indicate that next material complies with requirements specified for Operating Range.
B. When the results of either or both the Aggregate Grading and Sand Equivalent tests do not meet requirements specified for Contract Compliance, remove aggregate base represented by such tests.
C. Aggregate Grading and Sand Equivalent will be tested by VTA for every 1,000 tons or for one day’s production, whichever is smaller.
D. Inspections: The Independent Testing Agency shall perform the following inspections.
1. Aggregate Base: Aggregate base shall be inspected continuously during backfilling and compaction operations.
END OF SECTION
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 32 12 16 ASPHALT PAVING
PART 1 GENERAL 1.01 SUMMARY A. This Section includes specifications for providing asphalt concrete for constructing new pavement, pavement overlay, temporary pavement, trench restoration, temporary pedestrian walkways as indicated on the Plans and as specified herein.
1.02 RELATED SECTIONS A. SC-6, Contract Data Requirements B. SC-10, Site Access, completion Milestones, and Specific Construction Requirements C. SC-12, Sound Control Requirements D. SC-13, Safety Precautions, Programs and First Aid Requirements E. SC-33, Modifications to General Conditions, GC-47 Quality Assurance F. SC-51, Technical Submittals List G. GC-34, Contractor’s Work Area H. GC-35, Temporary Construction Facilities and Utilities I. GC-38, Public Convenience and Safety J. GC-43, Submittal of Shop Drawings, Product Data and Samples K. GC-49, Certificates of Compliance and Testing L. Section 02 41 13.13, Paving Removal M. Section 32 11 23, Aggregate Base 1.03 MEASUREMENT AND PAYMENT A. Asphalt Concrete (Type A): The contract unit price paid per ton as shown in the Schedule of Quantities and Prices shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in constructing the asphalt concrete pavement complete in place including subgrade preparation, cold plane existing asphalt pavement and install tack coat as required prior to installation of new AC and as shown on the Drawings and as specified in the City of San Jose Standard Specifications Section 39, Asphalt Concrete, these technical specifications, and as directed by the VTA. B. Full compensation for asphalt concrete furnished and placed for pavement restoration in conjunction with trenching for underground facilities, removal and/or replacement of existing facilities shall be considered as included in the contract prices paid for the various contract items of work involved and no additional compensation will be made therefor. C. Full compensation for temporary pavement and temporary walkways shall be considered as included in the contract lump sum price paid for Traffic Control System and no additional compensation will be allowed therefor. 1.04 REFERENCES A. American Society for Testing and materials (ASTM): 1. ASTM D2950 - 09 Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods 2. ASTM D3203 - 05 Standard Test Method for Percent Air Voids in Compacted Dense and Open Bituminous Paving Mixtures B. State of California, Department of Transportation (Caltrans): 1. Standard Specifications::
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
a. Section 39, Hot Mix Asphalt b. Section 68, Subsurface Drains 2. Standard Test Methods: a. Test 229 Durability Index b. Test 308 Bulk Specific Gravity and Weight Per Cubic Meter of Bituminous Mixtures c. Test 371 Resistance of Compacted Bituminous Mixture to Moisture Induced Damage d. Test 375 Determining the In-Place Density and Relative Compaction of AC Pavement C. American with Disabilities Act Accessibility Guidelines (ADAAG) D. California Code of Regulations, Title 24, Part 2, California Building Code 2007. E. City of San Jose Standard Specifications: 1. Section 39, Asphalt Concrete 1.05 SYSTEM DESCRIPTION A. Asphalt concrete used shall be Type A and shall conform to the provisions in Section 39, Asphalt Concrete, of the Standard Specifications of the City of San Jose and these technical specifications. 1. The minimum amount of asphalt binder to be mixed with the aggregate shall be 4.5 percent by weight of the dry aggregate. 2. Type A asphalt concrete surface course shall conform to the ¾ inch maximum (medium) grading, machine placed. Paving asphalt shall be AR4000. 1.06 SUBMITTALS A. Submittals’ General Requirements: 1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples. B. Submit job mix formula (JMF) as required in SC-51, Technical Submittals List with: 1. California Test 204 results 2. California Test 371 results C. On the first production day, and at least every 5,000 tons, submit samples split from the asphalt production samples for California Test 371. 1.07 QUALITY ASSURANCE A. Refer to SC-33, Modifications to General Conditions, GC-47 Quality Assurance for Contractor’s responsibilities for Quality Assurance.
PART 2 PRODUCTS 2.01 MATERIALS A. Paving asphalt shall be AR4000. B. Paint binder shall be rapid setting asphaltic emulsion spread at a rate of 0.10 to 0.12 gallons per square yard of surface covered. If the Contractor selects the paving asphalt option, the spread rate shall be from 0.06 to 0.09 gallons per square yard. The exact rate of application will be determined by the VTA.
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
PART 3 EXECUTION 3.01 EXAMINATION A. Contractor shall call for an inspection by the VTA and the City of San Jose and obtain acceptance of the prepared base course before proceeding with the paving. 3.02 INSTALLATION A. Installation of asphalt concrete shall conform to the provisions in Section 02039, “Asphaltic Concrete Pavement, Resurfacing, and Berms” of the City of Santa Clara Standard Specifications and these technical specifications. B. The Contractor shall cover loads of open graded asphalt concrete with tarpaulins. The tarpaulins shall completely cover exposed open graded asphalt concrete in the hauling vehicle until the open graded asphalt concrete has been completely transferred into the asphalt paver hopper. C. Upon completion of all utility trenching required for a section of the project, the Contractor shall notify VTA that the section is ready for pavement overlay. The Contractor shall meet in the field with the VTA and City of Santa Clara to review a checklist of all utility requirements in the segment. Upon approval by the VTA, the Contractor may proceed with the resurfacing operations as shown in the plans and as required by these specifications. D. The Contractor shall complete all overlay for a particular section of the project within ten working days of performing the gutter cut for that particular section of the work. E. Any trees requiring trimming in order to operate paving equipment shall be reviewed and approved for trimming by the VTA and City Santa Clara. The Contractor shall not trim trees without prior approval from the VTA. No separate compensation for tree trimming shall be made. F. Contractor shall adjust existing manholes and surface-evident utilities to grade in accordance with the Caltrans Standard Specification Section 15-2.10B, “Adjust Frames, Covers, Grates and Manholes.” All raised utilities shall be sand-sealed by the Contractor with a tack coat of SS-1h and sand as part of the final resurfacing. Utilities not adjusted to grade to the satisfaction of VTA shall be removed and readjusted by the Contractor at the Contractor’s expense. G. The utilities and other castings as specified in these specifications shall be broken out and adjusted to match the new grade of the asphalt concrete surface. These castings shall conform to the new surface by means of a Portland Cement concrete (PCC) collar set below a 1.5 inch surface course of asphalt concrete. H. Water and gas valves, electrical and telecommunications vaults will be adjusted to grade by the respective utility companies. The Contractor shall coordinate with the utility company representatives and the VTA to provide construction access for the utility companies to adjust their facilities to grade. I. All conforms, wedge grind across streets and cold joints shall be sand sealed with a tack coat of SS-1h and sand sealed immediately after paving. J. Crack filling, where required by the VTA, shall be performed after cold planning and the removal and replacement of asphalt concrete pavement. Where required, all materials, plants and vegetation shall be removed from cracks prior to replacement of filler. 3.03 CORRECTIVE WORK A. If the finished surface of the asphalt concrete on the traffic lanes does not meet the specified surface tolerances, it shall be brought with tolerance by either (1) removal and replacement, or (2) placing an overlay of asphalt concrete. The VTA will select the method. The corrective work shall be at the Contractor’s expense. Abrasive grinding will not be allowed for corrective action. A drop off of more than 1 ¾ inches will not be allowed at any time between adjacent lanes open to public traffic. 3.04 FIELD QUALITY CONTROL A. Final compaction of paving shall be tested by the Contractor’s independent testing laboratory using nuclear gauge using test method ASTM D2950. The test maximum density shall be derived from the laboratory compacted specimens made in accordance with California Test Method 304 and tested for Bulk Specific Gravity and Density in accordance with California Test 308.
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B. In addition to nuclear gauge testing, the VTA may at its discretion require that the final compaction of the paving be tested by the random selection of cores and testing the cores in accordance with California Test Method 308. The VTA will select core locations. Coring and testing shall be performed by the Contractor’s independent testing laboratory. C. The test results from coring will take precedence when determining if the paved areas meet the required relative compaction.
END OF SECTION
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1- April 22, 2016
SECTION 32 17 23 PAVEMENT MARKINGS
PART 1 GENERAL 1.01 SUMMARY A. This Section includes requirements for painting traffic stripes, painting curbs, pavement markings, and pavement markers. B. The requirements for temporary pavement markings during construction are specified on Section 01 55 26, Traffic Control. C. The requirements for removal of painting traffic stripes, pavement markings, and pavement markers are included in Section 02 41 13, Selective Site Demolition.
1.02 RELATED SECTIONS A. SC-6, Contract Data Requirements B. SC-33, Modifications to General Conditions, GC-47 Quality Assurance C. SC-51, Technical Submittals List D. GC-38, Public Convenience and Safety E. GC-43, Submittal of Shop Drawings, Product Data and Samples F. GC-45, Protection and Restoration of Property G. GC-46, Utility Paint Markings H. GC-49, Certificates of Compliance and Testing I. Section 01 55 26, Traffic Control J. Section 02 41 13, Selective Site Demolition 1.03 MEASUREMENT AND PAYMENT A. Thermoplastic Traffic Stripes: The contract unit prices paid per linear foot for Thermoplastic Traffic Stripes of the various types shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in installation of Thermoplastic traffic stripes (regardless of the number, widths and patterns of individual stripes involved in each type of traffic stripe) complete in place, including installation of the pavement markers that make up the traffic stripes, establishing alignment for stripes and including layout work, as shown on the drawings, as specified in these technical specifications, and as directed by the VTA. B. Painted Traffic Stripes: The contract unit price paid per linear foot for Paint Traffic Stripes of the various stripes shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in installation of painted traffic stripes, complete in place, including installation of the pavement markers that make up the traffic stripes, establishing alignment for stripes and including layout work, as shown on the drawings, as specified in these technical specifications, and as directed by the VTA. C. Full compensation for installing Pavement Markers shall be considered as included in the contract prices paid for Thermoplastic Traffic Stripes and Paint Traffic Stripes of the various stripes and no additional compensation will be allowed therefor. 1.04 REFERENCES A. City of Santa Clara Standard Specifications: 1. Section 02084, Traffic Stripes, Pavement Markings, and Pavement Markers B. State of California, Department of Transportation: 1. California Manual of Uniform Traffic Control Devices for Streets and Highways (FHWA’s MUTCD 2003 Edition).
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 17 23 Pavement Markings- 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1- April 22, 2016
C. County of Santa Clara Standard Specifications, May 2000 http://www.sccgov.org/rda/attachments/(004_standard_specifications_may_2000_ss.pdf and 2005 cumulative Amendments http://www.sccgov.org/rda/attachments/(005_standard_specifications_- _cumulative_amendments_ss.pdf D. State of California, Department of Transportation (Caltrans), Standard Specifications: 1. Section 59, Painting. 2. Section 82, Markers and Delineators. 3. Section 84, Traffic Stripes and Pavement Markings. 4. Section 85, Pavement Markers. 1.05 SUBMITTALS A. Submittals’ General Requirements: 1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples. B. Quality Assurance/Control Submittals 1. Submit a Certificate of Compliance as specified in GC-49, Certificates of Compliance and Testing, for signing and delineation materials and products. Said certificate shall also certify that the signing and delineation material or product conforms to the prequalified testing and approval of the VTA and was manufactured in accordance with the approved quality control program. 1.06 QUALITY ASSURANCE A. Refer to additional requirements included in SC-33 Modifications to General Conditions, GC-47 Quality Assurance. B. Regulatory Requirements: The product and installation shall meet the requirements of the City of Santa Clara.
PART 2 PRODUCTS
2.01 PAINT TRAFFIC STRIPES AND PAVEMENT MARKINGS A. Paint for traffic stripes and pavement markings shall conform to the provisions in Sections 84-1, "General," and 84-3, "Painted Traffic Stripes and Pavement Markings," of the Standard Specifications, details shown on the Standard Plans, on the Drawings, and these technical specifications. B. Glass beads shall conform to State Specification No. 8010-21.22 (Type II).
2.02 PAVEMENT MARKERS A. Pavement markers shall conform to the provisions in Section 85, "Pavement Markers," of the Standard Specifications, details shown on the Plans, the Standard Plans, and these technical specifications. Type C pavement markers shall be used in place of Type G pavement markers in the City of San Jose. Pavement markers in the City of San Jose shall also conform to the City of San Jose Standard Specifications. B. Pavement Markers Type shall conform to the provisions in Section 85, “Pavement Markers”, of the Standard Specifications, details shown on the Plans, the Standard Plans (A20D), and these technical specifications.
PART 3 EXECUTION
3.01 INSTALLATION A. The Contractor shall contact City of Santa Clara to obtain templates for pavement markings. The Contractor shall coordinate with City of Santa Clara inspection personnel for check of cat-track prior to final striping.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 17 23 Pavement Markings- 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1- April 22, 2016
B. Install thermoplastic traffic stripes (traffic lines) and pavement markings in accordance with the provisions in Section 02084, Traffic Stripes, Pavement Markings, and Pavement Markers, details shown on the plans and these technical specifications, and as directed by the Engineer.
C. Install painted traffic stripes (traffic lines) and pavement markings in accordance with the provisions in Section 02084, Traffic Stripes, Pavement Markings, and Pavement Markers, details shown on the plans and these technical specifications, and as directed by the Engineer.
D. Install pavement markers in accordance with the provisions in Section 85, "Pavement Markers," of the Standard Specifications, details shown on the Standard Plans, on the Drawings, and these technical specifications
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 17 23 Pavement Markings- 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1- April 22, 2016
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SECTION 32 31 13 CHAIN LINK FENCE AND GATES
PART 1 GENERAL 1.01 SECTION INCLUDES A. This Section includes the requirements for furnishing and installing chain link fence and gates (Type CL-8) as shown on the Drawings.
1.02 RELATED SECTIONS A. SC-6, Contract Data Requirements B. SC-33, Modifications to General Conditions, GC-47 Quality Assurance C. SC-51, Technical Submittals List D. GC-41, Product Options, Supplier Approval and Substitutions E. GC-43, Submittal of Shop Drawings, Product Data and Samples F. GC-49, Certificates of Compliance and Testing G. Section 02 41 13, Selective Site Demolition 1.03 MEASUREMENT AND PAYMENT A. The contract unit paid per linear foot for Chain Link Fence of the various types listed in the Schedule of Quantities and Prices shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in constructing chain link fence and gates, complete in place, including placing new concrete footings as shown on the Drawings, as specified in these technical specifications, and as directed by the VTA 1.04 REFERENCES A. State of California, Department of Transportation (Caltrans), Standard Specification: 1. Section 80, Fences B. American Society for Testing and Materials (ASTM) standards: 1. ASTM A116 Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products 2. ASTM A123 / A123M - 09 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products 3. ASTM A153 Specification for Zinc-Coating (Hot-Dip) on Iron and Steel Hardware 4. ASTM A392 Specifications for Zinc-Coated Steel Chain Link Fence Fabric 5. ASTM A653 / A653M - 09a Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process 6. ASTM A752 - 04(2010) Standard Specification for General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel 7. ASTM A1011 / A1011M - 10 Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength 8. ASTM B117 - 09 Standard Practice for Operating Salt Spray (Fog) Apparatus 9. ASTM F567 - 07 Standard Practice for Installation of Chain-Link Fence 10. ASTM F626 - 08 Standard Specification for Fence Fittings 11. ASTM F900 - 05 Standard Specification for Industrial and Commercial Swing Gates 12. ASTM F1083 - 08 Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized) Welded, for Fence Structures
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 31 13 Chain Link Fence and Gates- 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
13. ASTM G155 - 05a Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials 1.05 SYSTEM DESCRIPTION A. Chain link fencing shall conform to the details shown on the Plans and the provisions in section 80-4, “Chain Link Fence,” of the Standard Specifications, and these technical specifications. 1.06 SUBMITTALS A. Submittals’ General Requirements: 1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples. B. Product Data: Submit manufacturer’s product data of the specified chain link fence and gates. C. Shop Drawings: Submit detailed Shop Drawings of the fence and gates layout, including installation details of the fence, posts, gates, hardware, and accessories. D. Quality Assurance/Control Submittals 1. Certificates: Certify compliance with applicable labeling agency per GC-49, Certificates of Compliance and Testing. 2. Manufacturer’s Instructions. 1.07 QUALITY ASSURANCE A. Refer to additional requirements included in SC-33 Modifications to General Conditions, GC-47 Quality Assurance.
PART 2 PRODUCTS
2.01 MATERIALS A. Fencing shall include concrete footings, posts, framework, fabric, hardware, and all appurtenances and accessories as required for a complete installation. B. Chain link fencing materials shall conform to the details shown on the Plans and the provisions in Section 80-3, “Chain Link Fence,” of the Standard Specifications. C. Chain link fence shall be Type CL-8 as shown on the Plans. D. Fabric: Chain link fabric shall conform to the provisions in Section 80-3.02C Fabric, of the Standard Specifications. The steel core wire shall be 3.658 mm, coated with 91.5 g/sq.m of zinc and have a minimum breaking strength of 5738 N. Fabric shall be woven in a 2 inch mesh and both selvages shall be knuckled. E. Fabric locks: To prevent easy removal, fabric shall be attached to all line posts and horizontal rails with stainless steel “HI-SECURITY” locks shot in place with appropriate gun and powder charge at intervals not exceeding 15 inches on the posts and 24 inches on the horizontal rail. These locks shall consists of the following: 1. Pin – AISI 1062 Modified or 1566 Carbon Steel, heat treated to a hardness of RC52-56 and a minimum tensile strength of 1650MPa and shall be 31.75 mm long. Finish shall be zinc Electro chromate plating of 0.0762 mm minimum thickness, evaluated for corrosion resistance in accordance with Salt Spray Test Specifications ASTM B117-09. 2. Cap – No 304 Stainless Steel with a diameter of 30.1625 mm+/- F. Tension Wire: shall be 4.47 mm coil spring wire located at top (in lieu of top rail, when specifically shown on drawings) and bottom of fabric, and shall be PVC coated to match the fabric. G. Concrete: provide concrete footings for fence posts under this Section. Concrete for posts shall have a minimum compressive strength at 28 days of 20.67MPa, using 1 inch maximum size aggregate and 6.5 sacks of cement minimum per cubic meter with a maximum slump of 4 inches.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 31 13 Chain Link Fence and Gates- 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
PART 3 EXECUTION
3.01 PREPARATION A. Installation of fencing shall not be started until final grading work has been completed. B. Coordinate fencing post installation with the installation of adjacent work. C. Furnish galvanized steel pipe sleeves for fence posts, as applicable, for installation in formwork at time required. Supervise installation of sleeves during formwork and placing of concrete to maintain dimensions according to template. 3.02 INSTALLATION A. Install fencing as indicated, in accordance with approved shop drawings and Section 80-4, “Chain Link Fencing,” of the Standard Specifications and these technical specifications. Site fabricate as required to complete the fence installation. B. Posts shall be plumb and rigid after installation. Rails shall be straight and tight. Chain link fabric shall be smooth and uniformly stretched tight and straight. Tension wires and barbed wires shall be pulled taut. C. Drill holes for post footings in firm, undisturbed or compacted soil. Footing holes shall not be less than 8 inch diameter and 3 feet in depth. Post embedment in concrete shall be 3 feet. Excavate deeper and increase depth of footing as required for adequate support in soft and loose soils, and for posts with heavy lateral loads. D. Where posts are indicated or required to be embedded or set in concrete retaining walls, concrete foundations other than post footings, and traffic barriers, grout or seal posts in sleeves as indicated.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 31 13 Chain Link Fence and Gates- 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
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SECTION 32 31 20 PICKET FENCE
PART 1 GENERAL
1.01 DESCRIPTION
A. Section includes requirements for steel picket fencing. Picket fencing shall meet Caltrain standards for picket fencing.
1.02 REFERENCED STANDARDS
A. American Society for Testing and Materials (ASTM International):
1. A36 Specification for Carbon Structural Steel
2. Al23 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products
3. Al53 Standard Specification for Zinc Coating (Hot-dip) on Iron and Steel Hardware
4. A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy- Coated (Galvannealed) by the Hot-Dip Process
5. A787 Standard Specification for Electric-Resistance-Welded Metallic Coated Carbon Steel Mechanical Tubing
1.03 SUBMITTALS
A. Submit shop drawings showing plan layout, grid, spacing of components, accessories, fittings and hardware.
B. Submit manufacturer's product data.
C. Submit manufacturer's installation instructions.
D. Submit manufacturer's color palette to the Engineer for approval.
1.04 DELIVERABLES
A. Submit manufacturer's certificates of compliance for fence materials.
B. Qualifications: Submit name, business address and telephone number of fabricator's field representative.
C. Furnish certificate of inspection stating that the material has been sampled, tested and inspected per ASTM A653.
1.05 QUALITY ASSURANCE
A. Obtain the services of fencing fabricator's field representative to provide advice and assistance on the installation of the fence panels, fasteners, and repair work.
1.06 EXTRA MATERIALS
A. Furnish the following extra materials as follows. Securely fasten the panels and posts on wooden pallets, and the hardware in plastic containers clearly marked “Picket Fencing”, and deliver them to the Engineer's warehouse located within 25 miles of the project site.
1.07 MEASUREMENT AND PAYMENT
A. The contract unit paid per linear foot for Metal Picket Fences of the various types listed in the
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Schedule of Quantities and Prices shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in constructing metal picket fence, complete in place, including placing non-shrink grout as shown on the Drawings, as specified in these technical specifications, and as directed by the VTA
PART 2 PRODUCTS
2.01 FENCE
A. Fence panel width, other dimensions, and details including spacing of pickets, rings, posts, details of post caps, fasteners, etc. see Caltrain Standard Drawing or Contract Drawings.
1. Finished center fence height shall be 8 feet from top of concrete wall. Where wall steps up, upper fence shall match the height of the 8 foot fence per drawings.
B. Posts, rails and hardware:
1. Posts and post caps: Galvanized, square steel tubular members conforming to ASTM A787 and G90 zinc coating.
2. Horizontal rails: Galvanized, square steel tubular members conforming to ASTM A787, 50,000 psi yield strength and G90 zinc coating. Attach rails to posts with tamper resistant fasteners.
3. Hardware (Base Plates, Anchor Bolts, Gate Hardware and Miscellaneous Hardware): ASTM A36.
4. Nuts and Washers: Nuts and washers shall conform to Caltrans Standard Specifications, Section 55-1.02, Materials.
5. Non-Shrink Grout: Non-shrink grout shall conform to Section 03 62 00,Non-Shrinking Grout.
2.02 SHOP FINISHES
A. Galvanizing: Hot dip galvanize fence panels, rails and all associated hardware after fabrication in accordance with ASTM Al23. Coating Thickness: Minimum 90 microns, and,
B. Powder Coat: Powder coat all parts of fence including hardware after galvanizing and in accordance with coating manufacturer's instructions. Powder coat: O'Brien TGIC-Polyster or Engineer approved equal. Color: Black.
PART 3 INSTALLATION
3.01 INSTALLATION
A. Field Joints: Field joints shall be kept to a minimum and concealed to the greatest extent possible. Field joints shall be strong, rigid, watertight and flush with hairline fit. Ease sharp corners.
B. Adjust fence for uninterrupted visual continuity and tight, non-rattling connections.
3.02 REPAIR
A. Welded and abraded areas of galvanized surfaces shall be wire brushed and repaired with 2 coats of cold galvanized compound.
B. Repair abraded or damaged powder-coated per manufacturer's instructions.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 32 31 20 Picket Fence - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
SECTION 33 05 28 TRENCHING AND BACKFILLING FOR UTILITIES
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Bedding and backfilling materials.
B. Staking and grades.
C. Existing utilities.
D. Trenching and excavating.
E. Bedding and backfilling.
F. Field quality control.
1.02 RELATED SECTIONS
A. Dewatering is specified in Section 31 23 19 Dewatering.
B. Excavation support systems are specified in Section 31 50 00 - Excavation Support and Protection.
1.03 MEASUREMENT AND PAYMENT
A. Separate measurement or payment will not be made for Work required under this Technical Specifications Section. All costs in connection with the Work specified in this Technical Specifications Section will be considered to be included with the related item of Work in the Price Schedule or incidental to the Work.
1.04 REFERENCES
A. American Society for Testing and Materials (ASTM):
1. ASTM C33 Specification for Concrete Aggregates
B. State of California, Department of Transportation (Caltrans), Standard Specifications, Section 88, Geosynthetics.
C. State of California, Department of Transportation (Caltrans), Office of Structure Construction, "Trenching and Shoring" Manual.
D. State of California, Department of Transportation (Caltrans):
1. California Test Methods (to be used at the discretion of the Contractor or as required by the City of Santa Clara:
a. 217 Sand Equivalent
b. 229 Durability Index
E. American Society for Testing and Materials (ASTM):
1. ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
2. ASTM C43 Standard Terminology of Structural Clay Products
3. ASTM C231 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
F. All Work shall be performed and completed in accordance with the jurisdictional utility owner’s standard drawings and specifications. The Contractor shall be responsible for obtaining all such standards and for compliance with such standards as applicable.
1.05 DESCRIPTION
A. This Section includes specifications for excavating, trenching, and backfilling for utilities and related structures, as indicated, including underground piping for water supply, sanitary and storm sewerage piping; trackway and roadway site subsurface and drainage piping; underground electrical conduits and ductbanks; and utility boxes, catch basins, manholes, inlets, pull boxes, and vaults.
1. Trenching and backfilling for utilities includes restoration of existing pavements, where applicable, to the conditions existing before the excavation. Conform with applicable requirements of Section 32 12 16 - Asphalt Paving, and Section 32 16 21 - Concrete Curbs, Gutters, and Walks.
2. Trenching and backfilling for utilities includes excavating ballast and sub-ballast where applicable.
1.06 REGULATORY REQUIREMENTS
A. Regulatory requirements that govern the work of this Section include the following governing codes:
1. California Code of Regulations (CCR), Title 8, Chapter 4, Subchapter 4 - Construction Safety Orders, and subchapter 19 - Trench Construction Safety Orders, for trench excavations of 5 feet or more in depth.
2. California Code of Regulations, Title 24, Part 2, California Building Code, Chapter 33, and Appendix Chapter 33, excavation and Grading, for protection of the Public.
1.07 SUBMITTALS
A. Provide test samples in accordance with applicable requirements of ASTM C231.
PART 2 PRODUCTS
2.01 BEDDING AND BACKFILLING MATERIALS
A. Bedding:
1. Sand: Sand for bedding of pipe inutility trenches shall be a clean and graded, washed sand, all passing a No. 4 U.S. Standard sieve, and conforming generally to ASTM C33 for fine aggregate. A finer sand may be used, if convenient, provided the sand is clean and does not contain deleterious substances in excess of the amounts specified in ASTM C33, Table 3.
a. Only sand will be permitted for bedding of concrete pipe, clay pipe, and cast-iron pipe.
2. Pea Gravel: Clean and graded, washed river-run gravel, ASTM C33, Size No. 7. Pea gravel may be used in trenches requiring additional drainage and for backfilling above the pipe's upper half (above the horizontal centerline).
B. Backfill Material: Backfill for excavations and trenches under structures and paving shall be Structural Fill as indicated. (Refer to Section 31 00 00 - Earthwork, for requirements.) Common Fill will be
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 33 05 28 Trenching and Backfilling for Utilities - 2
Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
permitted only for backfilling of excavations and trenches in open areas and landscaped areas.
C. Controlled Low-Strength Material (CLSM): Fill Controlled Low-Strength Material (CLSM) Fill shall conform with the provisions of Section 03 05 10, “Portland Cement Concrete”.
PART 3 EXECUTION
3.03 TRENCHING AND EXCAVATING
A. Comply with CCR, Title 8, Trench Construction safety Orders, and the California Building Code, Chapter 33 and Appendix Chapter 33, as applicable.
B. Perform trenching and excavating as indicated and required for drainage and utility piping, conduits, and related structures, and provide shoring, bracing pumping, and planking as required and as specified in Section 31 50 00 - Excavation Support and Protection.
C. Excavate to the lines and grades indicated.
D. Excavate trenches for piping and conduits by the open-cut method, except where tunneling or jacking are indicated. Hand-excavate for crossing pipelines.
E. In paved areas, cut pavement on the neat lines at the width indicated for the trench. Pavement shall be saw cut. After compacting the backfill, restore pavement to a condition equivalent to that existing at the start of construction. Restore pavement damaged outside the neat lines.
1. Where indicated or required by the governmental authority having jurisdiction, provide Controlled Low-Strength Material (CLSM) for trench excavation to underside of pavement.
F. Excavate trenches to the indicated width at all points below a horizontal plan 2 feet above the top of the pipe. Excavation above this plan may exceed the indicated width as required. Where the width is not indicated, make the width not less than 6 inches nor more than 18 inches from the outside of the pipe. If the excavation exceeds permissible dimensions, install higher strength pipe or encase the pipe in Class 3000 concrete.
G. The bottoms of excavations shall be firm, undisturbed earth or cut sub grade, clean and free from loose material, debris, and foreign matter. When bottoms of excavations or trenches are a soft or unstable material, the bed shall be made firm and solid by removing said unstable material to a sufficient depth and replacing same with sand or pea gravel, compacted to at least 90 percent relative compaction.
H. Where water is encountered in the trench, dewater a specified in Section 31 23 19 - Dewatering, and provide sand or pea gravel as required to drain the water and stabilize the bed.
I. Bell holes shall be accurately placed and shall not be larger than required to make the joint.
J. Excavations for structures shall conform to applicable requirements of Section 31 00 00 - Earthwork.
L. Equipment and traffic shall not be permitted on the controlled density fill (CDF) until the surface of the CDF will withstand the weight of the equipment and traffic without displacement or damage.
M. Provide steel trench plates to span trenches where required to provide passage for vehicles and other equipment.
3.04 BEDDING AND BACKFILLING
A. Material for bedding of pipe shall be sand. Minimum thickness of sand bedding under concrete, clay, and cast-iron pipe shall be 2 inches. Provide firm and uniform support of piping at indicated elevations and grades. Tamp sand bedding s required for firm support.
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Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 (C16063) Issued for Addendum # 1 - April 22, 2016
1. The joints of gravity flow piping shall be wrapped with filter fabric all around the pipe. Place filter fabric under the pipe before laying pipe in sand bedding. Filter fabric shall extend at least 12 inches on each side of the joint.
B. Backfill below the horizontal centerline of pipe shall be sand. Backfill to 6 inches above teh top of pipe from the horizontal centerline of pipe shall be the material herein specified in Articles 2.01.A.2 and 2.01.B, as applicable.
C. Backfill shall be placed in 6-inch layers, leveled, rammed, and tamped in place. Each layer shall be compacted with suitable compaction equipment to at least 90 percent relative compaction, taking care not to damage or misalign any pipe. The top 12 inches under structures and pavement shall be compacted to at least 95 percent relative compaction.
D. Backfilling around concrete structures and for ductbanks and similar utilities shall conform to the applicable requirements of 31 23 23 - Fill.
3.05 FIELD QUALITY CONTROL
A. Comply with applicable requirements specified in Section 31 23 16 – Excavation and Section 31 23 23 - Fill.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 33 05 28 Trenching and Backfilling for Utilities - 4
Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum # 1 – April 22, 2016
SECTION 34 11 26 SUBBALLAST AND BALLAST
PART 1 GENERAL 1.01 SUMMARY
A. This section includes the requirements for furnishing and constructing subballast on prepared roadbed as indicated on UP Standard Drawing No. 0010E and on the Construction Drawings. Ballast is to be furnished and installed by UPRR. 1.02 REFERENCES
A. The publications listed below form a part of this Specification to the extent referenced. The publications are referred to within the text by the basic designation only. The latest edition on supplement thereto in effect at the time of invitation to bid shall be considered to be the issue in effect.
1. American Railway Engineering and Maintenance-of-Way Association (AREMA) AREMA Eng Man Manual for Railway Engineering
2. ASTM International (ASTM) ASTM C88 Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate ASTM C131 Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine ASTM C535 Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
3. Union Pacific Standard Drawing No. 0010E 1.03 SUBMITTALS
A. Submittals’ General Requirements:
1. Refer to VTA Special Conditions, SC-6, Contract Data Requirements, and SC-51, Technical Submittals List, and VTA General Conditions, GC-43, Submittal of Shop Drawings, Product Data and Samples.
B. The Contractor shall submit three (3) copies of each submittal and an electronic copy on compact disk or other acceptable electronic medium for all submittals.
C. Samples: Submit samples of proposed subballast material.
D. Certification: Submit certification that the subballast material meet UP’s specifications.
1.04 MEASUREMENT AND PAYMENT
A. Subballast shall be furnished and paid per cubic yard . Payment shall include furnishing, placing and compacting to the final grade.
PART 2 PRODUCTS
2.01 SUBBALLAST
A. Material Requirements: Materials shall be 100% crushed stone produced from oversized quarried aggregate, sized by crushing and produced from a naturally occurring single source. Aggregate retained on a No. 10 sieve shall consist of hard, durable particles or fragments of stone. The subballast
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 34 11 26 Subballast and Ballast - 1 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum # 1 – April 22, 2016
material shall have:
1. No more than approximately 10% freeze-thaw loss when tested in accordance with ASTM C 88 (under 5 cycles of freeze-thaw with sodium sulfate solution)
2. No more than 50% loss when tested in accordance with ASTM C 131.
B. Gradation: Subballast shall consist of gradations as set forth in UP Standard Drawing No. 0010E.
C. Design Requirements: Subballast and its minimum depth is set forth in UP Standard Drawing No. 0010E.
2.02 BALLAST
A. Not Used.
PART 3 EXECUTION
3.01 GENERAL
A. Subballast shall be constructed as shown on UP Standard Drawing No. 0010E and in accordance with AREMA Manual for Railway Engineering.
3.02 PLACEMENT OF SUBBALLAST
A. Subballast shall be placed to the lines and grades indicated. The average thickness shall be within 0.25 inch of the thickness shown on the drawings. Subballast shall not be placed on soft, muddy, or frozen areas. Where the prepared subgrade is soft, muddy, rutted, exhibits severe depressions, or is otherwise damaged, the subballast shall not be placed until the damaged subgrade has been repaired and the area has been approved by Union Pacific.
B. Subballast
1. Subballast Placement: Subballast shall be placed in uniform horizontal lifts of not more than 6 inch for the full width of the cross-section to the total depth indicated. Each subballast layer shall be shaped to a section conforming to the subballast section shown on the drawings and shall be thoroughly compacted.
2. Subballast Compaction: Each subballast lift shall be compacted using approved compaction equipment. The roller weights, vibration frequencies (where applicable), tire pressures (where applicable), and number of passes shall be sufficient to obtain in-place densities across the full width of the subballast and throughout the entire depth of the layer of not less than 95 percent of the ASTM D1557 laboratory maximum dry density for the subballast material. Prior to placement of subsequent subballast layers, the top of the previous layer shall be scarified to a depth of approximately 2 inch to insure proper bond of the layers. Density shall be field measured in accordance with ASTM D1556 or ASTM D6938. One field density test shall be taken for each 1000 square yards of each layer of material placed in each area.
C. Ballast
1. Not Used.
2.
3.03 SAMPLING AND TESTING
A. Sampling and testing is the responsibility of the Contractor. Submit one certified copy of Test Reports for each test performed on the subballast within 2 working days of the test completion. Sampling and testing shall be performed by an approved commercial testing laboratory.
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 34 11 26 Subballast and Ballast - 2 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum # 1 – April 22, 2016
B. Subballast Tests: Periodic sampling and testing of subballast material shall be performed to ensure continued compliance with this specification. During construction, one representative sample of the subballast material shall be taken from each 2,000 tons of subballast delivered to determine the material gradation. For each 10,000 tons or a fraction thereof of ballast delivered, an additional amount of material shall be obtained in order to perform the quality and soundness tests specified. Samples for material gradation, quality, and soundness tests shall be taken in conformance with ASTM D75/D75M. Test samples shall be reduced from field samples in conformance with ASTM C702/C702M. Sample sizes shall be sufficient to provide the minimum sample sizes required by the designated test procedures. If any individual sample fails to meet the gradation requirement, placement shall be halted and immediate corrective action shall be taken to restore the specified gradation. If any individual sample fails to meet the specified quality and soundness requirements, placement shall be halted and immediate corrective action shall be taken to restore the specified quality.
END OF SECTION
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 34 11 26 Subballast and Ballast - 3 Santa Clara Caltrain Station Pedestrian Underpass Extension CONTRACT C827 Issued for Addendum # 1 – April 22, 2016
This Page Not Used
File Date: 04/21/2016 TECHNICAL SPECIFICATIONS 34 11 26 Subballast and Ballast - 4