Trenching and Shoring Guidelines
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Heavy Equipment
Heavy Equipment Code: 5913 Version: 01 Copyright © 2007. All Rights Reserved. Heavy Equipment General Assessment Information Blueprint Contents General Assessment Information Sample Written Items Written Assessment Information Performance Assessment Information Specic Competencies Covered in the Test Sample Performance Job Test Type: The Heavy Equipment assessment is included in NOCTI’s Teacher assessment battery. Teacher assessments measure an individual’s technical knowledge and skills in a proctored prociency examination format. These assessments are used in a large number of states as part of the teacher licensing and/or certication process, assessing competency in all aspects of a particular industry. NOCTI Teacher tests typically oer both a written and performance component that must be administered at a NOCTI-approved Area Test Center. Teacher assessments can be delivered in an online or paper/pencil format. Revision Team: The assessment content is based on input from subject matter experts representing the state of Pennsylvania. CIP Code 49.0202- Construction/Heavy Career Cluster 2- 47-2073.00- Operating Engineers Equipment/Earthmoving Architecture and Construction and Other Construction Equipment Operation Equipment Operators NOCTI Teacher Assessment Page 2 of 12 Heavy Equipment Wrien Assessment NOCTI written assessments consist of questions to measure an individual’s factual theoretical knowledge. Administration Time: 3 hours Number of Questions: 232 Number of Sessions: This assessment may be administered in one, two, or three -
Sloping and Benching Systems
Trenching and Excavation Operations SLOPING AND BENCHING SYSTEMS OBJECTIVES Upon the completion of this section, the participant should be able to: 1. Describe the difference between maximum allowable slope and actual slope. 2. Observe how the angle of various sloped systems varies with soil type. 3. Evaluate layered systems to determine the proper trench slope. 4. Illustrate how shield systems and sloping systems interface in combination systems. ©HMTRI 2000 Page 42 Trenching REV1 Trenching and Excavation Operations SLOPING SYSTEMS If enough surface room is available, sloping or benching the trench walls will offer excellent protection without any additional equipment. Cutting the slope of the excavation back to its prescribed angle will allow the forces of cohesion (if present) and internal friction to hold the soil together and keep it from flowing downs the face of the trench. The soil type primarily determines the excavation angle. Sloping a method of protecting employees from caveins by excavating to form sides of an excavation that are inclined away from the excavations so as to prevent caveins. In practice, it may be difficult to accurately determine these sloping angles. Most of the time, the depth of the trench is known or can easily be determined. Based on the vertical depth, the amount of cutback on each side of the trench can be calculated. A formula to calculate these cutback distances will be included with each slope diagram. NOTE: Remember, the beginning of the cutback distance begins at the toe of the slope, not the center of the trench. Accordingly, the cutback distance will be the same regardless of how wide the trench is at the bottom. -
SECTION A-A NTS 2" Grade Board Notches
Figure 4.1 – Alternative Flow Dispersal Trench NOTES: 1. This trench shall be constructed to prevent point discharge 1' - 6" min galvanized bolts and /or erosion. *20% max 2. Trenches may be placed no closer than 50 feet to one *20% max 2" x 12" another (100 feet along flowline). pressure 3. Trench and grade board must be treated grade level. Align to follow contours of board site. 4" x 4" support 4. Support post spacing as post required by soil conditions to 2" x 2" notches ensure grade board remains 18" O.C. 36" max 12" min. clean (< 5% fines) level. 3 1 4" - 1 2" washed rock filter fabric *15% max for flow control/water quality 18" O.C. treatment in rural areas 2" SECTION A-A NTS 2" grade board notches Figure 4.2 – Pipe Compaction Design and Backfill O.D. O.D. limits of pipe W (see note 4) 3' max. 3' max. compaction limit of pipe zone 1' - 0" bedding material for flexible 1' - 0" pipe (see 0.15 O.D. min. note 6) B O.D. limits of pipe compaction 0.65 O.D. min. foundation level A* gravel backfill gravel backfill for for pipe bedding foundations when specified * A = 4" min., 27" I.D. and under 6" min., over 27" I.D. A. Metal and Concrete Pipe Bedding for Flexible Pipe span span span 3' max Flexible Pipe NOTES: 3' max 3' max 1. Provide uniform support under barrels. 1'-0" 2. Hand tamp under haunches. 3. Compact bedding material to 95% max. -
MECHANIC I/II Application Deadline: September 16, 2020
INYO COUNTY PERSONNEL SERVICES (760) 878-0377 P. O. BOX 249 FAX (760) 878-0465 INDEPENDENCE , CA 93526 AN EQUAL OPPORTUNITY EMPLOYER (WOMEN, MINORITIES, AND DISABLED ARE ENCOURAGED TO APPLY) ANNOUNCES AN OPEN RECRUITMENT FOR: HEAVY EQUIPMENT MECHANIC I/II Application Deadline: September 16, 2020 DEPARTMENT: Road LOCATION: Countywide SALARY: Mechanic I: Range 58 $3583 $3761 $3945 $4146 $4346 (+ 2-1/2% tool allowance) Mechanic II: Range 60 $3758 $3941 $4139 $4350 $4564 (+2-1/2% tool allowance) (The above monthly salary is paid over 26 pay periods annually.) **BENEFITS: CalPERS Retirement System: Existing (“Classic”) CalPERS members hired prior to January 1, 2013 (2% at 55) – Inyo County pays employee contribution of 7% for current CalPERS members; New (“PEPRA”) CalPERS members hired after January 1, 2013 (2% at 62) will be required to pay employee portion of retirement. Medical Plan – Inyo County pays a portion of employee and dependent monthly premium on PERS medical plans; 100% of employee and dependent monthly premium paid for dental and vision; $20,000 term life insurance policy on employee. Vacation – 10 days per year during the first three years; 15 days per year after three years; 1 additional day for each year of service after ten years to a maximum of 25 days per year. Sick leave – 15 days per year. Flex (personal days) – 5 days per fiscal year. Paid holidays – 11 per year. ESSENTIAL JOB DUTIES: Maintains, repairs, and overhauls gasoline and diesel-powered construction, maintenance, and automotive equipment; examines and locates mechanical defects in a wide variety of automotive, road construction, and maintenance equipment, including diesel and gasoline-powered trucks, tractors, and motor graders; makes a variety of mechanical repairs including engine tune-ups, brake relining, electrical system repair; maintains records of time and materials used on each job; uses welding equipment to fabricate, rebuild, and strengthen various equipment parts; operates a variety of vehicles and equipment. -
Frequency and Magnitude of Selected Historical Landslide Events in The
Chapter 9 Frequency and Magnitude of Selected Historical Landslide Events in the Southern Appalachian Highlands of North Carolina and Virginia: Relationships to Rainfall, Geological and Ecohydrological Controls, and Effects Richard M. Wooten , Anne C. Witt , Chelcy F. Miniat , Tristram C. Hales , and Jennifer L. Aldred Abstract Landsliding is a recurring process in the southern Appalachian Highlands (SAH) region of the Central Hardwood Region. Debris fl ows, dominant among landslide processes in the SAH, are triggered when rainfall increases pore-water pressures in steep, soil-mantled slopes. Storms that trigger hundreds of debris fl ows occur about every 9 years and those that generate thousands occur about every 25 years. Rainfall from cyclonic storms triggered hundreds to thousands of debris R. M. Wooten (*) Geohazards and Engineering Geology , North Carolina Geological Survey , 2090 US Highway 70 , Swannanoa , NC 28778 , USA e-mail: [email protected] A. C. Witt Virginia Department of Mines, Minerals and Energy , Division of Geology and Mineral Resources , 900 Natural Resources Drive, Suite 500 , Charlottesville , VA 22903 , USA e-mail: [email protected] C. F. Miniat Coweeta Hydrologic Lab , Center for Forest Watershed Research, USDA Forest Service, Southern Research Station , 3160 Coweeta Lab Road , Otto , NC 28763 , USA e-mail: [email protected] T. C. Hales Hillslope Geomorphology , School of Earth and Ocean Sciences, Cardiff University , Main Building, Park Place , Cardiff CF10 3AT , UK e-mail: [email protected] J. L. Aldred Department of Geography and Earth Sciences , University of North Carolina at Charlotte , 9201 University City Blvd. , Charlotte , NC 28223 , USA e-mail: [email protected] © Springer International Publishing Switzerland 2016 203 C.H. -
Division 2 Earthwork
Division 2 Earthwork 2-01 Clearing, Grubbing, and Roadside Cleanup 2-01.1 Description The Contractor shall clear, grub, and clean up those areas staked or described in the Special Provisions. This Work includes protecting from harm all trees, bushes, shrubs, or other objects selected to remain. “Clearing” means removing and disposing of all unwanted material from the surface, such as trees, brush, down timber, or other natural material. “Grubbing” means removing and disposing of all unwanted vegetative matter from underground, such as sod, stumps, roots, buried logs, or other debris. “Roadside cleanup”, whether inside or outside the staked area, means Work done to give the roadside an attractive, finished appearance. “Debris” means all unusable natural material produced by clearing, grubbing, or roadside cleanup. 2-01.2 Disposal of Usable Material and Debris The Contractor shall meet all requirements of state, county, and municipal regulations regarding health, safety, and public welfare in the disposal of all usable material and debris. The Contractor shall dispose of all debris by one or more of the disposal methods described below. 2-01.2(1) Disposal Method No. 1 – Open Burning The open burning of residue resulting from land clearing is restricted by Chapter 173-425 of the Washington Administrative Code (WAC). No commercial open burning shall be conducted without authorization from the Washington State Department of Ecology or the appropriate local air pollution control authority. All burning operations shall be strictly in accordance with these authorizations. 2-01.2(2) Disposal Method No. 2 – Waste Site Debris shall be hauled to a waste site obtained and provided by the Contractor in accordance with Section 2-03.3(7)C. -
Slope Stability
SLOPE STABILITY 1. General. Any excavation, which alters the levee or channel bank cross-section, either temporarily or permanently, must be checked to verify slope stability. Placement of stockpiles, heavy equipment, or other surcharges may also cause channel bank instabilities and should be analyzed. Verification of slope stability involves three basic parts: 1) obtaining subsurface information, 2) determining soil shear strengths and 2) determining a potential slide failure surface which provides the minimum safety factor against failure for various river stages. EM 1110-2-1913 and EM 1110-2-1902 provide detailed guidance for preparing a slope stability analysis. 2. Subsurface Information. Subsurface information in the vicinity of the proposed work can generally be obtained from the original levee/channel construction plans. Boring logs shown in these plans may or may not be located close to the work and the engineer must determine if additional subsurface information is needed. Additional boring(s) at the site are generally beneficial. Other completed work in the nearby vicinity may also provide useful information. Soil type, thickness of each soil zone, depth to bedrock, and groundwater conditions must be known to proceed with a slope stability analysis. 3. Selection of Soil Shear Strengths. Soils in and under levees in the Kansas City District usually consist of varying mixtures of sands, silts, and clays. Shear strength of these soils is defined in terms of a friction component (φ) and a cohesion component (C). C and φ can be determined by testing soil samples in special laboratory test apparatus or from special equipment, which can measure these parameters on site. -
3 Groundwork and Foundations
P1: JZW/JZZ BY032-03 BY032-Emmitt BY032-v1.cls September 13, 2004 9:6 3 Groundwork and Foundations The foundation of a building is that part of walls, piers and columns in direct contact with, and transmitting loads to, the ground. The building founda- tion is sometimes referred to as the artificial foundation, and the ground on which it bears as the natural foundation. Early buildings were founded on rock or firm ground; it was not until the beginning of the twentieth century that concrete was increasingly used as a foundation base for walls. With the introduction of local and then national building regulations, standard forms of concrete foundations have become accepted practice in the UK, along with more rigorous investigation of the nature and bearing capacity of soils and bedrock. 3.1 Functional requirements The primary functional requirement of a foundation is strength and stability. Strength and stability The combined, dead, imposed and wind loads on a building must be transmit- ted to the ground safely, without causing deflection or deformation of the build- ing or movement of the ground that would impair the stability of the building and/or neighbouring structures. Foundations should also be designed and constructed to resist any movements of the subsoil. Foundations should be designed so that any settlement is both limited and uniform under the whole of the building. Some settlement of a building on a soil foundation is inevitable. As the building is erected the loads placed on the foundation increase and the soil is compressed. This settlement should be limited to avoid damage to service pipes and drains connected to the building. -
Trench Blasting with DYNAMITE a TRADITION of INNOVATION
Trench Blasting with DYNAMITE A TRADITION OF INNOVATION Dyno Nobel’s roots reach back to every significant in- novation in explosives safety and technology. Today, Dyno Nobel supplies a full line of explosives products and blasting services to mines, quarries and contractors in nearly every part of the world. DYNAMITE PRODUCT OF CHOICE FOR TRENCH BLASTING One explosive product has survived the test of time to become a true classic in the industry. DYNAMITE! The dynamite products manufactured today by Dyno Nobel are similar to Alfred Nobel’s original 1860s invention yet, in selected applications, they outperform any other commercial explosives on the market. The high energy, reliability and easy loading characteristics of dynamite make it the product of choice for difficult and demand- ing trench blasting jobs. Look to Unigel®, Dynomax Pro® and Unimax® to make trench blasting as effective and efficient as it can be. DISCLAIMER The information set forth herein is provided for informational purposes only. No representation or warranty is made or intended by DYNO NOBEL INC. or its affiliates as to the applicability of any procedures to any par- ticular situation or circumstance or as to the completeness or accuracy of any information contained herein. User assumes sole responsibility for all results and consequences. ® Cover photo depicts a trench blast using Primacord detonating cord, MS ® Connectors and Unimax dynamite. SAFE BLASTING REMINDERS Blasting safety is our first priority. Review these remind- ers frequently and make safety your first priority, too. • Dynamite products will provide higher energy value than alternate products used for trenching due to their superior energy, velocity and weight strength. -
Appendix F: Geotechnical Engineering Investigation
City of Santa Rosa—College Creek Apartments Project CEQA Guidelines Section 15183 Environmental Checklist Appendix F: Geotechnical Engineering Investigation FirstCarbon Solutions THIS PAGE INTENTIONALLY LEFT BLANK GEOTECHNICAL ENGINEERING INVESTIGATION PROPOSED WEST COLLEGE A VENUE APARTMENTS 2150 W. COLLEGE A VENUE SANT A ROSA, CALIFORNIA KA PROJECT No. 042-19004 APRIL 16, 2019 Prepared for: Ms. ROYCE PATCH USA PROPERTIES FUND, INC. 3200 DOUGLAS BOULEVARD, SUITE 200 ROSEVILLE, CALIFORNIA 95661 Prepared by: KRAzAN & ASSOCIATES, INC. GEOTECHNICAL ENGINEERING DIVISION 1061 SERPENTINE LANE, SUITE F PLEASANTON, CALIFORNIA 94566 (925) 307-1160 ~~l<razan_ & ASSOCIATES, INC. GEOTECHNICAL ENGINEERING• ENVIRONMENTAL ENGINEERING CONSTRUCTION TESTING & INSPECTION April 16, 2019 KA Project No. 042-19004 Ms. Royce Patch USA Properties Fund, Inc. 3200 Douglas Boulevard, Suite 200 Roseville, California 95661 RE: Geotechnical Engineering Investigation Proposed West College Avenue Apartments 2150 W. College A venue Santa Rosa, California Dear Ms. Patch: In accordance with your request, we have completed a Geotechnical Engineering Investigation for the above-referenced site. The results of our investigation are presented in the attached report. If you have any questions, or if we may be of further assistance, please do not hesitate to contact our office at (925) 307-1160. DRJ:ht With Offices Serving The Western United States 1061 Serpentine Lane, Suite F •Pleasanton CA 94566 • (925) 307-1160 •Fax: (925) 307-1161 04219004 Report (West College Ave Apartments).doc -
Fact Sheet: Trenching and Excavation Safety
Fact sheet Trenching and excavation safety Between 2016 and 2019, three Minnesota workers died in a trench, excavation or ground collapse. Cave-ins pose the greatest risk and are much more likely than other excavation-related accidents to result in worker fatalities. Minnesota law requires employers to provide a workplace free of recognized hazards that may cause serious injury or death. This includes the trenching and excavation requirements of 29 CFR 1926.651 and 1926.652. An excavation is any man-made cut, cavity, trench or depression in an earth surface, formed by earth removal. A trench – or a trench excavation – is a narrow excavation (in relation to its length) made below the surface of the ground; in general, the depth is greater than the width, but the width of a trench (measured at the bottom) is not greater than 15 feet. Dangers of trenching and excavation In addition to cave-ins, other potential hazards include falls, falling loads, hazardous atmospheres and incidents involving mobile equipment. Two cubic yards of soil can weigh about 6,000 pounds or as much as a small car. An unprotected trench is an early grave. Do not enter an unprotected trench. Trench safety measures Trenches five feet deep or greater require a protective system unless the excavation is made entirely in stable rock. If the trench is fewer than five feet deep, a competent person may determine a protective system is not required. Trenches 20 feet deep or greater require that the protective system be designed by a registered professional engineer or be based on tabulated data prepared and/or approved by a registered professional engineer in accordance with 1926.652(b) and (c). -
Harvesting Peat from the Bog to Your Operation
MEDIA & FERTILIZER Harvesting Peat from the Bog to your Operation Figure 1. A virgin sphagnum bog in Quebec, Canada. Learn what’s involved in harvesting, packaging and shipping peat for horticulture production. The Canadian Peat Moss Industry By Neil Mattson, Bill Miller and Jeff Bishop • In 1999, 1.2 million metric tons of peat (10 million cubic meters) was harvested in Canada. n the 1960s, professors at Cornell University Harvesting and Processing were among the fi rst to advocate the use of peat When a company wants to open a new peat • It is estimated that 70 million metric tons in their soilless Peat-Lite mixes for greenhouse bog for harvesting, surveys are conducted to of peat accumulates annually in Canada, so production. Several properties of peat moss determine if a site contains horticulture grade current harvesting represents 1.7 percent Ihave led to its widespread adoption by the industry sphagnum. Th e peat should have a depth of at of annual accumulation. Thus, peat is over the intervening decades; these include: high least 2 meters, as it is desirable that a bog be able accumulating some 60 times faster than water holding and cation exchange capacity, lack to be harvested for many years (Figure 2). Ditches it is being harvested. of residual herbicides and weed seeds compared are built to drain surface water and access roads • Canada is estimated to contain 280 mil- to soil and composts, and low incidence of root- lion acres of peat land. In contrast, the peat borne pathogens. industry harvests on ca. 42,000 acres.