SECTION 07160

BITUMINOUS DAMPPROOFING

PART 1 GENERAL

SECTION INCLUDES

[Hot applied asphalt] [Cold applied asphalt] [Hot applied coal tar] bitumen damproofing.

[Protective cover.]

RELATED SECTIONS

Section 02223 - Backfilling.

Section [______-____________]:	Concrete surfaces.

Section [______-____________]:	[Parged] masonry surfaces.

Section [______-____________]: Preservative treated wood foundation surfaces.

Section 07105 - Bituminous Membrane Waterproofing.

****** [OR] ******

Section [______-____________]: [________] type waterproofing.

Section 07212 - Board Insulation: Perimeter [and horizontal] insulation [protective cover].

REFERENCES

ASTM D41 - Asphalt Primer Used in Roofing, Dampproofing and Waterproofing.

ASTM D449 - Asphalt Used in Dampproofing and Waterproofing.

ASTM D450 - Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing.

ASTM D491 - Asphalt Mastic Used in Waterproofing.

ASTM D43 - Creosote Primer Used in Roofing, Dampproofing, and Waterproofing.

ASTM D2822 - Asphalt Roof Cement.

ASTM D4022 - Coal Tar Roof Cement.

NRCA (National Roofing Contractors Association) -Waterproofing Manual.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Product Data: Provide properties of primer, bitumen, and mastics.

Manufacturer's Installation Instructions: Indicate special procedures and perimeter conditions requiring special attention.

QUALITY ASSURANCE

Perform Work in accordance with NRCA Waterproofing Manual.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Applicator: Company specializing in performing the work of this section with minimum [__________] years [documented] experience.

ENVIRONMENTAL REQUIREMENTS

Maintain ambient temperatures above [40] [____] degrees F ([5] [____] degrees C) for [24] [____] hours before and during application until membrane has cured.

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

HOT ASPHALTIC MATERIALS

Asphalt: ASTM D449, Type [I.] [____.]

Asphalt Primer: ASTM D41, compatible with substrate.

Asphaltic Sealing Mastic: [ASTM D491.] [ASTM D2822 Type [I] [II].]

****** [OR] ******

COAL TAR MATERIALS

Coal Tar: ASTM D450, Type [II.] [____.]

Coal Tar Primer: ASTM D43, creosote type.

Coal Tar Sealing Mastic:	ASTM D4022, bitumen filled with mineral dust and mineral fibers, to mastic consistency.

****** [OR] ******

COLD ASPHALTIC MATERIALS

Asphalt Emulsion: ASTM D1187.

****** [OR] ******

Asphalt Mastic: ASTM D491.

Asphalt Primer: ASTM D41, compatible with substrate.

Asphalt Cement: ASTM D2822 Type I.

ACCESSORIES

Protection Board: Rigid insulation specified in Section [07212.] [________.]

****** [OR] ******

Protection Board: [1/8] [1/4] [1/2] [____] inch ([3] [6] [13] [____] mm) thick [biodegradable hardboard] [polystyrene foam sheet] [asphalt wood fiberboard] [bitumen impregnated glass fiberboard] [________]; [________] manufactured by [____________].

Flexible Flashings: [____] inch ([____] mm) thick, [butyl] [EDPM [________]; [________] manufactured by [____________].

PART 3 EXECUTION

EXAMINATION

Verify substrate surfaces are durable, free of matter detrimental to adhesion or application of dampproofing system.

Verify items which penetrate surfaces to receive dampproofing are securely installed.

PREPARATION

Protect adjacent surfaces not designated to receive dampproofing.

Clean and prepare surfaces to receive dampproofing in accordance with manufacturer's instructions.

Do not apply dampproofing to surfaces unacceptable to

[manufacturer] [or] [applicator].

Apply mastic to seal penetrations, small cracks, or minor honeycomb in substrate.

APPLICATION

Prime surfaces in accordance with manufacturer's instructions.

****** [OR] ******

Prime surfaces in accordance with NRCA - Waterproofing Manual.

****** [OR] ******

Prime surfaces at a rate of [____] gal/100 sq ft ([____] L/sq m). Permit primer to dry.

Apply [hot] [cold] bitumen [with mop.] [with roller.] [by spray application.] [by trowel.]

Apply bitumen at a temperature limited by equiviscous temperature (EVT) plus or minus 25 degrees F (14 degrees C); finish blowing temperature not to be exceeded for four hours.

Apply bitumen in [one] [two] coats, continuous and uniform, at a rate of [____] gal/100 sq ft ([____] L/sq m) [per coat].

Apply from [2] [____] inches ([50] [____] mm) below finish grade elevation to [top of footings.] [________.]

Seal items projecting through dampproofing surface with mastic. Seal watertight.

PROTECTION

Immediately backfill against dampproofing to protect from damage.

****** [OR] ******

Protect membrane from damage by adhering protection board [, applied with mastic] over dampproofing surface. Scribe and cut boards around projections and interruptions.

Neatly fit boards tight around pipe and other projections.

SCHEDULE

DAMPPROOFING SCHEDULE

Foundation Wall: Two coatings of asphalt dampproofing.

Subgrade Tunnel:	Patch existing coal tar dampproofing with two coatings of new coal tar dampproofing at disturbed areas.

END OF SECTION