SPECIAL SPECIFICATION

SECTION 07570

[TRAFFIC TOPPING]{.underline}

Page

PART 1 - GENERAL

1.01 Related Documents
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1.02 References
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1.03 Summary
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1.04 Submittals
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1.05 Quality Assurance
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1.06 Product Handling
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1.07 Job Conditions
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1.08 Warranty
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PART 2 - PRODUCTS

2.01 Manufacturer and Materials
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PART 3 - EXECUTION

3.01 Installation of Traffic Bearing Roof Deck
Covering\...\...\...\...\...\...\...\...\...\...\...\...\..... 6

SPECIAL SPECIFICATION

SECTION 07570

[TRAFFIC TOPPING]{.underline}

PART 1 - GENERAL

1.01 [RELATED DOCUMENTS]{.underline}

A. The General Conditions, Special Contract General Conditions and
Special Conditions are part of this section.

1.02 [REFERENCES]{.underline}

A [American Society of Testing and Materials (ASTM)]{.underline}

E 108 Test Method for Fire Tests of Roof Coverings

S 1117 Methods of Testing Nonwoven Fabrics

B. [Military Standardization Documents (MIL)]{.underline}

D-3134

C. [Underwriter Laboratory (UL)]{.underline}

1.03 [SUMMARY]{.underline}

A. Provide labor, materials and equipment for proper execution of this
work which includes:

1\. Waterproof neoprene composition pedestrian traffic-bearing roof deck
surfacing complete with \"slip-sheet\", waterproof membrane and integral
composition flashing.

B. [Related work specified elsewhere]{.underline}:

1\. Flashing and Sheet Metal Section 07600

2\. Concrete Work Section 03310.

1.04 [SUBMITTALS]{.underline}

A. At the request of the Sandia Delegated Representative (SDR), the
Contractor shall deliver to the Sandia Delegated Representative (SDR)
two of each of the following:

1\. Laboratory test reports and/or approvals indicating that the brand
of material proposed for use as traffic-bearing roof deck covering,
meets the requirements of this specification.

2\. Samples of material proposed for use as traffic-bearing roof deck
covering, clearly labeled as to brand name and manufacturers name.

3\. The manufacturer\'s complete printed specifications for the
application of the material.

4\. Color charts showing the traffic-surface colors available.

5\. The manufacturer\'s printed maintenance instructions for the
traffic-bearing roof covering.

6\. Submit shop drawings indicating details of flashing methods and
terminations.

1.05 [QUALITY ASSURANCE]{.underline}

A. [Qualifications]{.underline}: The installer shall provide the
locations of three traffic-bearing roof deck installations of the same
manufacture as that which he proposes to install and that were installed
by factory trained applicators, in accordance with the submitted
manufacturer\'s specifications and that have given at least five (5)
years of satisfactory service. The firm shall be certified in writing by
manufacturer as a licensed or approved applicator.

B. [UL Listed Products]{.underline}: Provide materials that have been
tested and listed by UL for applications indicated, with following
rating for deck and ramp slopes shown:

1\. \"Class A\" rated materials/system.

C. All materials used shall not contain asbestos fibers or lead.

1.06 [PRODUCT HANDLING]{.underline}

A. Deliver materials in manufacturer\'s unopened, labeled containers,
and comply with manufacturer\'s instructions for storage and handling.

1\. Provide UL labels on containers.

1.07 [JOB CONDITIONS]{.underline}

A. Proceed with traffic-topping work only after substrate construction
and penetrating work have been completed.

1.08 [WARRANTY]{.underline}

A. Upon completion of the work and receipt of final payment, the
manufacturer\'s ten (10) year warranty covering materials shall be
issued to Sandia National Laboratories (\*SNL).

B. Traffic topping contractor shall supply SNL with a minimum two-year
workmanship warranty. In the event any work related to topping,
flashings, or metalwork is found to be defective or otherwise not in
accordance with the contract documents within two years of final
acceptance, the topping contractor shall remove and replace the defects
at no cost to SNL.

PART 2 - PRODUCTS

2.01 [MANUFACTURER AND MATERIALS]{.underline}

A. Waterproof neoprene composition pedestrian traffic-bearing roof deck
surfacing shall be Dex-O-Tex Weatherwear or approved substitution.

B. Component materials shall conform to the following standards:

1\. Traffic deck binder and all other rubber emulsions shall be
compounded with neoprene liquid and shall have a minimum neoprene solids
content of 35% when tested by the \"dry cup\" method.

2\. Aggregate for traffic surface coating shall be suitably graded fine
trap-rock passing a #20 mesh sieve and retained on a #40 mesh sieve.

3\. \"Slip-sheet\" shall consist of asphalt-saturated glass fiber
matting weighing not less than 7 lbs. per 100 square feet and containing
no rag or organic fibers.

4\. Final finish dressing shall be a single component, water-phase
acrylic latex emulsion material, pigmented and of a consistency suitable
for roller application.

5\. Binders and all other liquid components, and also dry components,
including blending of cement and aggregate, shall be completely mixed
and packaged at the factory. All materials shall be delivered to the
site in the manufacturer\'s sealed containers and shall be ready to be
intermixed without the addition of any other material.

6\. Fabric used as reinforcement for waterproof flashing shall be 7-1/2
oz. (per sq. yd) jute that has been factory treated with a recognized
resin saturation for protection against fungus and bacteria attack. It
shall be pre-shrunk and pigmented red by this treatment. It shall have a
fixed nitrogen retention of not less than 2% after boiling in water for
thirty (30) minutes.

7\. Fabric used as reinforcement for waterproof membrane on surfaces
shall be a non-directional glass fiber matting having a weight of not
less than 1 oz. per sq. ft.

C. Finished traffic-bearing roof deck covering shall conform to the
following test standards and requirements:

1\. Waterproofness:

(Sample exposed to 50 lbs. p.s.i. water pressure for one

hour at room temperature) No water transmission.

2\. Resistance to permanent Indentation:

MIL-D-3134, Para. 3.9.4.7.4

(1,000 lbs. load for ten minutes) 3.38%

3\. Tensile Strength and Elongation

ASTM D-1117 (Tested dry and after immersion for 24 hrs.)

Percent Elongation (Dry) 2.17%

Wet) 1.83%

Breaking Load (CRY) 151 lbs. per in.

(Wet) 147 lbs. per in.

4\. Slip-Resistance (Coefficient of Sliding Friction)

MIL-D-3134, Para. 4.7.6

Dry Leather .37

Wet Leather .46

Dry Rubber .77

Wet Rubber .84

5\. Adhesion of Flashing 750 lbs per. in.

6\. Resistance to Uplift

(South Florida Building Code Sect. 204 .. Complies.

7\. Resistance to Aging

(Atlas Twin-Arc Weatherometer; 20 minute cycle;

17 mins. Wet - 3 mins.

Dry: 300 hours) No fading or visible effect

8\. Fire Retardance

(ASTM-E108)

Method A - Intermittent Flame Passes for Class A

Method B - Spread of Flaming Passes for Class A

Method C - Burning Brand Passes for Class A

PART 3 - EXECUTION

3.01 [INSTALLATION OF TRAFFIC BEARING ROOF DECK COVERING]{.underline}

A. Traffic-bearing roof deck covering shall be installed in strict
accordance with the manufacturer\'s specifications by a contractor
trained and approved by the manufacturer and having had previous
experience in the application of the material.

B. Traffic-bearing roof deck covering shall not be applied during either
freezing or inclement weather or when such weather can logically be
expected. Surfaces over which traffic-bearing roof deck covering is to
be applied, shall not contain more than 7% moisture content.

C. Installation of traffic-bearing roof deck covering shall include as a
minimum, the following applications:

1\. Over dry, suitably pitched sub-surfaces, apply Slip-Sheet with latex
bonding coat.

2\. At all horizontal surfaces apply glass fabric reinforced membrane
embedded in and coated with neoprene rubber in aqueous solution.

3\. At all verticals apply neoprene composition, jute fabric reinforced
(two plies) flashing to height shown on plans.

4\. Trowel apply two trowel coats of neoprene and aggregate composition
traffic surfacing over all surfaces previously covered with membrane.
Sand surface to remove trowel ridges.

5\. Trowel apply two smoothing coats of neoprene and fine aggregate
composition to achieve smooth, filled surface. Sand surface to remove
trowel ridges.

6\. Roller apply two coats of surface dressing to achieve uniform
surface.

D. Finished neoprene composition traffic-bearing roof deck surfacing
shall be 3/16\" thick (min.), smooth and uniform in color and texture.

END OF SECTION