Pedestrian Traffic Coatings

MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME A/E Name Issue Description A/E Project No. Month, 00, 0000

SECTION 07 18 13 – PEDESTRIAN TRAFFIC COATINGS

PART 1 - GENERAL

0.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

B. Specifications throughout all Divisions of the Project Manual are directly applicable to this Section, and this Section is directly applicable to them.

0.2 SUMMARY

A. Perform all work required to complete the Pedestrian Traffic Deck Polyurethane Waterproof Coating system indicated by the Contract Documents and furnish supplementary items necessary for its proper installation.

0.3 REFERENCE STANDARDS

A. The latest published edition of a reference shall be applicable to this Project unless identified by a specific edition date.

B. All reference amendments adopted prior to the effective date of this Contract shall be applicable to this Project.

C. All materials, installation and workmanship shall comply with all applicable requirements and standards.

0.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: Manufacturer shall have not less than five years successful production of this product.

B. Subcontractor Qualifications:

1. Subcontractor shall have not less than two (2) years specialized experience with this product.

2. Subcontractor shall be approved by the system manufacturer.

C. Special Requirements of Regulatory Agencies: Submit certification that system complies with VOC (Volatile Organic Components) requirements and regulations of the Environmental Protection Agency (EPA), Occupational Safety Health Administration (OSHA), State, County, City and Local Aircontrol District.

D. Standard of Quality Sample: After approval of submittals and prior to proceeding with the work specified by this Section, install the coating system in a scheduled room as designated by the Architect. The work will be reviewed by the Owner and the Architect and upon approval will become the standard by which the quality of the materials and workmanship of this Section shall comply.

The University of Texas PEDESTRIAN TRAFFIC COATINGS MD Anderson Cancer Center 07 18 13 MS010107 1 OF 5 MD ANDERSON Project No. XX-XXXX MD ANDERSON PROJECT NAME A/E Name Issue Description A/E Project No. Month, 00, 0000

0.5 SUBMITTALS

A. Product Data:

1. Product Data: Submit manufacturer’s literature to indicate compliance with specifications.

0.6 PROJECT CONDITIONS

A. Do not apply during inclement weather.

B. Do not install coating when the temperature of the surface is 40 degrees F or less, or will fall below 40 degrees F, 24 hours after installation.

C. Do not install when temperature is above 130 degrees F.

0.7 WARRANTY

A. Furnish a joint written warranty from the manufacturer and the applicator covering defective material and workmanship including correcting and repairing any leaks that may occur in surfaces that are covered with coating system for a period of three years, from date of substantial completion.

B. Warranty to include responsibility for ruptures caused by cracking substrate up to 1/16 inch in width.

PART 2 - PRODUCTS

0.1 GENERAL

A. All materials shall meet or exceed all applicable referenced standards, federal, state and local requirements, and conform to codes and ordinances of authorities having jurisdiction.

0.2 ACCEPTABLE PRODUCT/MATERIAL MANUFACTURERS

A. A specific product or material manufactured by any of the listed manufacturers is “acceptable” (not “approved”) only if the specific product or material can evidence compliance with requirements of the Contract Documents.

1. 3M Company – “System P”.

2. Multi-Chemical Products, Inc. – “Multi-I-Thane System #456”.

3. The Neogard Corporation – “Peda-Gard II”.

4. Harry S. Peterson Co., Inc. – “Iso-Flex 750-U40”.

5. Mameco International, Inc., - “Vulkem 350/351”.

6. Quaker Sealants & Coatings – “QSC 5013”.

0.3 MATERIALS

A. Coating: Polyurethane elastomer based, not less than 40 mil total thickness.

B. Color: Comply with design selections.

C. Primer: As recommended by manufacturer.

D. Backer Rod: Comply with joint sealant specifications.

E. Sealant: Low modulus polyurethane based.

F. Sheet Flashing: .050” thick, precured, commercial grade neoprene.

G. Flashing Reinforcement: Woven, uncoated fiberglass mesh.

H. Cleaning Agents: Non-carcinogenic materials as recommended manufacturer.

I. Concrete Cleaner: Commercial grade alkaline cleaner.

J. Etcher: Muriatic Acid, 10 to 15 percent solution.

K. Aggregate: 20 to 24 mesh silicon sand for room floors.

0.4 MIXING

A. Follow strictly manufacturer’s latest published specification recommendations for mixing, mixing equipment and application life.

B. Do not begin mixing until surfaces to receive waterproofing have been properly cleaned, primed and ready for application.

PART 3 - EXECUTION

0.1 PREPARATION

A. Examine and verify that receiving substrate surfaces have no defects or errors, which would result in poor or potentially defective application or cause latent defects in workmanship.

B. Report any unsatisfactory conditions to the Architect.

C. Starting installation shall imply acceptance of surfaces.

D. Rout or sawcut cracks exceeding 1/16 inch in width and fill with sealant.

E. Apply fill coat to cracks, holes and other imperfections.

F. Thoroughly clean surfaces to receive coating materials in accordance with manufacturer’s instructions and recommendations.

G. Remove oil and grease with a commercial grade alkaline cleaner; thoroughly rinse and dry.

H. Prepare concrete surfaces by sandblasting or by etching with a 10 to 15 percent solution of muriatic acid. Flush acid with clean water and allow to dry. Protect adjacent surfaces.

I. Clean surfaces so that they are dry, clean, and free of loose aggregate, oily or waxy film, waterproofing agents or form release agents.

J. Prepare surfaces to receive membrane and vacuum debris.

K. Clean with vacuum cleaner to produce required surface.

L. Do not start until work of other trades, which penetrates the floor or goes through the coating, has been completed.

M. Close off areas to traffic and other work during installation and for at least 48 hours after completion of coating work.

0.2 INSTALLATION

A. Installation shall meet or exceed all applicable federal, state and local requirements, referenced standards and conform to codes and ordinances of authorities having jurisdiction.

B. Install in accordance with the system manufacturer’s latest published requirements, specifications, details and approved submittals.

C. Flashings:

1. Provide fluid applied integral flashings at locations where a horizontal surface abuts a vertical surface and at deck penetrations. Install fluid applied flashings at a dry film thickness of not less than 20 mils (0.020 inches). Use nonflowing type coating.

2. At locations of potential high movement such as wall/slab intersections which are not structurally and rigidly connected, provide not less than 10 inches width of sheet flashing, or reinforce coating with one layer of uncoated, woven fiberglass cloth. Make sheet flashings free or unbonded to the substrate within 2 inches vertically and horizontally from meeting angle, but make them fully bonded for not less than 2 inches on vertical surface and 4 inches on horizontal surface. Do not use precured sheet flashings over expansion joints in horizontal surfaces.

3. At projections through deck coatings such as posts, vents, pipes, stanchions, railings and similar locations of potential slight movement, provide a ½ inch bead of sealant. Tool sealant to form a cove and allow to cure before overcoating.

D. Primer and Detail Work:

1. Prime concrete, masonry and metal surfaces at manufacturer’s recommended rate. Allow concrete primer to completely dry but do not apply more than 8 hours preceding application of coating. Apply metal primer within 9 days prior to application of coating.

2. Apply 20 mil dry film thickness of nonflowing type coating over flashings. Extend coating 2 inches beyond flashing out onto adjacent deck surface. Extend coating a minimum of 1 inch above the top of the flashing and terminate in a straight line, unless otherwise indicated on Drawings or where limited by height of base.

3. Apply 20 mil dry film thickness of nonflowing type coating for a distance of 1½ inches on each side of cracks.

E. Base Coat:

1. Apply coating material at a dry film thickness of 25 mils. Extend coating over fluid applied flashings and detail coatings.

2. Allow to cure for not less than 16 hours at temperatures less than 75 degrees F, and relative humidity less than 50 percent, extend curing time.

F. Top Coat:

1. Apply top coating material at a dry film thickness of 15 mils to areas which have been previously coated.

2. Uniformly broadcast aggregate over the surface at the rate of 5 pounds per 100 square feet, while coating is still fluid. Immediately roll to evenly distribute and completely coat the aggregate.

3. Allow top coat to cure for not less than 48 hours before permitting traffic on surfaces. Extend curing time at temperatures less than 75 degrees F and relative humidity less than 50 percent.

0.3 FIELD QUALITY CONTROL

A. Verify the applied thickness before the material attains final set, by use of a mil-thickness gauge as the work progresses. Immediately apply additional coating to produce required thickness where readings indicate a thickness less than that specified.

B. Dam and flood entire area to a depth of 1 inch after horizontal membrane has cured, to verify waterproofing integrity. Inspect underside after 48 hours. Drain and dry, and reapply membrane to areas where leakage is detected, if repairs are necessary. Repeat testing and repairing until leaks no longer appear.

C. Visually inspect areas which cannot be water tested for voids, damage, or rupture. Repair as required.

END OF SECTION 07 18 13

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