071110 Composite Sheet Waterproofing.pdf

Parking Garage Project Number 693-222 Department of Veterans Affairs Wilkes-Barre, Pennsylvania

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SECTION 071110 - COMPOSITE SHEET WATERPROOFING

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Below-grade wall waterproofing.

2. Protection / Drainage course

3. Perforated drain pipe

4. Geotextile fabric

5. Below-grade rigid insulation board

B. Related Sections: The following Sections contain requirements that relate to this Section:

1. Division 3 Section "Cast-in-Place Concrete" for concrete placement, curing, and finishing.

1.3 PERFORMANCE REQUIREMENTS

A. General: Provide waterproofing that prevents the passage of liquid water under hydrostatic pressure and complies with requirements as demonstrated by testing performed by an independent testing agency of manufacturer's current sheet membrane.

1.4 SUBMITTALS

A. General: Submit each item in this Article according to the Conditions of the Contract and Division 1 Specification Sections.

B. Product Data including manufacturer's printed instructions for evaluating, preparing, and treating substrate, technical data, and tested physical and performance properties.

C. Shop Drawings showing locations and extent of waterproofing, including details for substrate joints and cracks, sheet flashings, penetrations, tie-ins with adjoining construction, and other termination conditions. Also, drawing showing drain pipe layout plan and elevations indicating discharge methods and outlet locations.

D. Samples: For the following products:

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1. 12 by 12 inch square of waterproofing sheet material.

2. 12 by 12 inch square of insulation board material.

3. 12 by 12 inch square of drainage course material.

4. 12 by 12 inch square of geotextile fabric material.

E. Product test reports from a qualified independent testing agency evidencing compliance of waterproofing with requirements and other physical properties reported by manufacturer based on comprehensive testing of products according to current standard test methods within previous 5 years.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Engage an Installer who has completed waterproofing similar to that indicated for this Project. Installer to submit certificate signed by waterproofing manufacturer.

B. Single-Source Responsibility: Obtain waterproofing materials from a single manufacturer regularly engaged in manufacturing waterproofing.

C. Mockups: Apply waterproofing to 100 sq. ft. of wall to demonstrate quality of materials and execution of work.

1. If architect determines mockup does not comply with requirements, reapply materials until mockup is approved.

2. Approved mockup may become part of the completed WORK.

D. Preinstallation Conference: Conduct conference at Project site to comply with requirements of Division 1 Section "Project Meetings."

1. Before installing waterproofing, conduct a combined meeting with Owner, Architect, Manufacturers Representative and other concerned entities.

2. Review requirements for waterproofing, including surface preparation specified under other Sections, substrate condition and pretreatment, minimum curing period, forecasted weather conditions, special details and sheet flashings, installation procedures, inspection and testing procedures, and protection and repairs.

3. Notify participants at least 7 days before conference.

1.6. DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to Project site in original packages with seals unbroken, labeled with manufacturer's name, product, date of manufacture, and directions for storage.

B. Store materials in their original undamaged packages in a clean, dry, protected location and within temperature range required by waterproofing manufacturer. Protect stored materials from direct sunlight.

1.7 PROJECT CONDITIONS

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A Environmental Conditions: Apply waterproofing within range of ambient and substrate temperatures recommended by waterproofing manufacturer. Do not apply waterproofing to a damp or wet substrate.

1. Do not apply waterproofing in snow, rain, fog, or mist.

B. Maintain adequate ventilation during preparation and application of waterproofing materials.

1.8 WARRANTY

A. General Warranty: The special warranty specified in this Article shall not deprive the Owner of other rights the Owner may have under other provisions of the Contract Documents and shall be in addition to, and run concurrent with, other warranties made by the Contractor under requirements of the Contract Documents.

B. Special Manufacturers Warranty: Written warranty, signed by waterproofing manufacturer agreeing to replace waterproofing material that does not comply with requirements or that does not remain watertight during specified warranty period.

1. Warranty Period: Five years after date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Products: Subject to compliance with requirements, manufacturers offering products that may be incorporated in the Work include, but are not limited to, the f following:

1. Rubberized-Asphalt Composite Sheet:

a. CCW MiraDRI 860/861; Carlisle Corporation, Carlisle Coatings & Waterproofing Inc.

b. Bituthene 3000; Grace: W.R. Grace & Co.

c. Sealtight MEL-ROL: W.R. Meadows Inc.

2.2 SELF-ADHERING COMPOSITE SHEET

A. Rubberized-Asphalt Composite Sheet: 60-mil- thick self-adhering sheet consisting of 56 mils of rubberized asphalt laminated to a 4-mil- thick polyethylene film with release liner on adhesive side.

1. Sheet Type: Composite sheet formulated for use with primer or surface conditioner meeting VOC limits of authorities having jurisdiction.

2. Physical Properties: Provide waterproofing complying with the following:

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a. Tensile Strength: 250 psi minimum; ASTM D 412, Die C, modified.

b. Ultimate Elongation: 300 percent minimum; ASTM D 412, Die C, modified.

c. Pliability: No cracks when bent 180 degrees over a 1-inch mandrel at minus 25 deg F; ASTM D 146.

d. Puncture Resistance: 40 lbf minimum; ASTM E 154.

e. Water Absorption: 0.15 percent weight-gain maximum after 48-hour immersion at 70 deg F; ASTM D 570.

2.3 AUXILIARY MATERIALS

A. General: Furnish auxiliary materials recommended by waterproofing manufacturer for intended use and compatible with waterproofing sheet membrane.

B. Primer: Liquid primer recommended by manufacturer of sheet waterproofing material for substrate.

C. Sheet Flashing: Self-adhering, rubberized-asphalt composite sheet of same material, construction, and thickness as waterproofing sheet membrane.

D. Protection / Drainage Course: As follows:

1. High-performance, high-strength, three dimensional high-impact polystyrene drainage core, bonded to a non-woven filter fabric on the drainage face and a polymeric sheet adhered to the back side of the core.

a. Core: thickness; Nominal .40 inch ; ASTM D 1777

b. Fabric: grab tensile strength; 100 lb.; ASTM D 4632.

c. Core: compressive strength; 15,000 lbs. per sq. ft.; ASTM D 1621.

d. Core: flow rate installed vertically; 12.5 gpm per sq. ft.; ASTM D 4716.

E. Geotextile Fabric: As follows:

1. Woven monofilament filtration fabric.

a. Flow rate: 18 gpm per sq. ft.; ASTM D 4491.

b. Tensile strength: 370 x 250; ASTM D 4632.

F. Termination Bar: As recommended by Waterproofing manufacturer.

G. Drain Pipe: Perforated (PVC) Poly Vinyl Cloride sewer and drain pipe and fittings.

a. Complies with ASTM D 2729.

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H. Cap Flashing: Embedded flashing extending outbound concealing top termination of waterproofing assembly. Buried and covered by controlled earth backfill.

1. EPDM: Ethylene Propylene Diene Terpoymer synthetic rubber. Flexible 40 mil elastomeric rubber membrane.

a. EPDM Flashing, flexible membrane:

1) Carlisle Pre-Kleened EPDM; Carlisle Coatings & Waterproofing, Incorporated.

2) Firestone Flashgard Thru-Wall Flashing; Firestone Building Products Co.

2. Adhesives, Primers, and Seam Tapes for Flashings: Flashing manufacturer's standard products or products recommended by the flashing manufacturer for bonding flashing sheets to each other and to substrates.

I. Extruded-Polystyrene Insulation Board: Rigid, square-edged, cellular extruded polystyrene thermal insulation formed from polystyrene base resin by an extrusion process using hydrochlorofluorocarbons as blowing agent to comply with ASTM C 578 for Type IV, compressive strength minumun 25 lbs. psi.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions under which waterproofing systems will be applied, with Installer present, for compliance with Manufacturers requirements. Do not proceed with installation until unsatisfactory conditions have been corrected.

1. Do not proceed with installation until after minimum concrete curing period recommended by waterproofing manufacturer.

2. Verify substrate is visibly dry and free of moisture. Test for capillary moisture by plastic sheet method according to ASTM D 4263.

3. Notify Architect in writing of anticipated problems using waterproofing over substrate.

3.2 SURFACE PREPARATION

A. Clean, prepare, and treat substrate according to manufacturer's written instructions.

Provide clean, dust-free, and dry substrate for waterproofing application.

B Remove grease, oil, form release agents, paints, and other penetrating contaminants from concrete.

C. Remove fins, ridges, mortar, and other projections and fill honeycomb, aggregate pockets, holes, and other voids.

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D. Prepare, fill, prime, and treat joints and cracks in substrate. Remove dust and dirt from joints and cracks according to ASTM D 4258.

1. Install membrane strip and center over construction and control joints and cracks exceeding a width of 1/16 inch.

E. Inside Corners: Prepare, prime, and treat inside corners according to waterproofing manufacturer's written instructions.

1. Install membrane strip centered over vertical inside corners. Install 3/4-inch fillets of liquid membrane on horizontal inside corners and as follows:

a. At footing-to-wall intersections, install membrane strip centered over corner.

F. Outside Corners: Prepare and treat outside corners according to waterproofing manufacturer's written instructions.

1. Install strip of membrane 12 inches wide, centered over corner.

G. Prepare, treat, and seal vertical and horizontal surfaces at terminations and penetrations through waterproofing and at drains and protrusions according to waterproofing manufacturer's written instructions.

1. At expansion joints and discontinuous deck-to-wall or deck-to-deck joints, bridge and cover with sheet membrane strips.

3.3 SELF-ADHERING COMPOSITE SHEET APPLICATION

A. Install self-adhering composite sheet according to waterproofing manufacturer's written instructions.

B. Apply primer to substrate at required rate and allow to dry. Limit priming to areas that will be covered by waterproofing membrane in same day. Reprime areas exposed for more than 24 hours.

C. Apply and firmly adhere sheet membrane over area to receive waterproofing.

Accurately align sheets and maintain uniform 2-1/2-inch- minimum lap widths and end laps. Overlap and seal seams and stagger end laps to ensure watertight installation.

1. When ambient and substrate temperatures exceed 40 deg F, install manufacturer's standard rubberized-asphalt composite sheet.

D. Apply continuous sheet membrane over membrane strips bridging each type of joint to dimensions indicated or required by manufacturer.

E. Seal exposed edges of membrane terminations not concealed by counterflashings or ending in reglets with mastic or sealant. Top edges, vertically and horizontally, to be sealed by installation of Waterproofing manufacturers mechanically fastened termination bar and concealed by cap flashing membrane.

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F. Install sheet membrane and auxiliary materials to tie in adjacent waterproofing.

G. Repair tears, voids, and lapped seams in waterproofing not meeting requirements. Slit and flatten fishmouths and blisters. Patch with sheet membrane extending 6 inches beyond repaired areas in all directions.

3.4 PROTECTION / DRAINAGE COURSE INSTALLATION

A. Install protection / drainage course over waterproofing membrane according to waterproofing manufacturer's written instructions.

3.5 CAP FLASHING INSTALLATION

A. Extend EPDM flexible flashing from a point a minimum of 12-inches below the top edge of the waterproofing membrane, extending vertically up the outboard face of the drainage/protection course, continuing horizontally a minimum of 1¼” into the bottom masonry veneer mortor joint. Provide a minumun 1¼” overlap and adhere to wall cavity vapor retarder material using flashing manufactuer’s approved tape. Cap flashing material to conceal top exposed edge of Waterproofing assembly. Adhere flashing material to outboard face of drainage/protection course using flashing manufacturer’s approved adhesive or tape. Seal laps between lengths of flashing with lap sealant, over lap min. 4”.

3.6 DRAIN PIPE INSTALLATION

A. Install drain pipe with perforations on top according to pipe manufacturer's written instructions. Top of pipe to align with top of concrete footing, setting on a minumun of 2” deep clean approved granular backfill. Cover perforated top half of pipe with geotextile fabric. Install clean approved granular backfill covering pipe a minumun of 12” on top and outboard side. Granular backfill to be wrapped with geotextile fabric.

B. Pipe to drain to finished grade by means of sloped pipe discharges at specific site locations or pumping.

3.7 EXTRUDED-POLYSTYRENE INSULATION BOARD INSTALLATION

A. Install insulation board over waterproofing membrane according to insulation manufacturer's written instructions. Insulation board to be covered with protection / drainage course.

3.8 PROTECTING AND CLEANING

A. Protect waterproofing from damage and wear during application and remainder of construction period, according to manufacturer's written instructions.

B. Where insulation board is being used in conjunction with waterproofing assembly, protect installed insulation from damage due to ultraviolet light exposure, physical abuse, and other causes. Provide temporary coverings where insulation will be subject

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C. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.

END OF SECTION 071110