07 81 00 Applied Fireproofing.pdf

589A4-25-102 | Install Dedicated Pharmacy Air Handlers

Harry S. Truman VAMC – Columbia, MO 100% Bid Documents

11-01-21

07 81 00 - 1

07-01-

SECTION 07 81 00

APPLIED FIREPROOFING

PART 1 - GENERAL

1.1 DESCRIPTION

This section specifies mineral fiber and cementitious coverings to provide fire resistance to interior structural steel members shown.

1.2 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Manufacturer's Literature and Data:

1. Manufacturer's complete and detailed application instructions and specifications.

2. Manufacturer's repair and patching instructions.

C. Certificates:

1. Certificate from testing laboratory attesting fireproofing material and application method meet the specified fire ratings.

a. List thickness and density of material required to meet fire ratings.

b. Accompanied by complete test report and test record.

2. Manufacturer's certificate indicating sprayed-on fireproofing material supplied under the Contract is same within manufacturing tolerance as fireproofing material tested.

D. Miscellaneous:

1. Manufacturer's written approval of surfaces to receive sprayed-on fireproofing.

2. Manufacturer's written approval of completed installation.

3. Manufacturer's written approval of the applicators of fireproofing material.

1.3 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Deliver to job-site in sealed containers marked and labeled to show manufacturer's name and brand and certification of compliance with the specified requirements.

B. Remove damaged containers from the site.

C. Store the materials off the ground, under cover, away from damp surfaces.

D. Keep dry until ready for use.

07 81 00 - 2

E. Remove materials that have been exposed to water before installation from the site.

1.4 QUALITY CONTROL

A. Test for fire endurance in accordance with ASTM E119, for fire rating specified, in a nationally recognized laboratory.

B. Manufacturer's inspection and approval of surfaces to receive fireproofing as specified under paragraph Examination.

C. Manufacturer's approval of fireproofing applications.

D. Manufacturer's approval of completed installation.

E. Manufacturer's representative shall observe and advise at the commencement of application, and shall visit the site as required thereafter for the purpose of ascertaining proper application.

F. Pre-Application Test Area.

1. Apply a test area consisting of a typical overhead fireproofing installation, including not less than 4.5 m (15 feet) of beam and deck.

a. Apply to one column.

b. Apply for the hourly ratings used.

2. Install in location selected by the Resident Engineer, for approval by the representative of the fireproofing material manufacturer and by the Government.

3. Perform Bond test on painted steel in accordance with ASTM E736.

4. Do not proceed in other areas until installation of test area has been completed and approved.

5. Keep approved installation area open for observation as criteria for sprayed-on fireproofing.

1.5 APPLICABLE PUBLICATIONS

A. Publications listed below form a part of this specification to the extent referenced. Publications are referenced in the text by the basic designation only.

B. American Society for Testing and Materials (ASTM):

C841-03(R2008)..........Installation of Interior Lathing and Furring

C847-10.................Metal Lath

E84-10..................Surface Burning Characteristics of Building

Materials

E119-10.................Fire Tests of Building Construction and

Materials

07 81 00 - 3

E605-93(R2006)..........Thickness and Density of Sprayed Fire-Resistive

Materials Applied to Structural Members

E736-00(R2006)..........Cohesion/Adhesion of Sprayed Fire-Resistive

Materials Applied to Structural Members

E759-92(R2005)..........The Effect of Deflection on Sprayed Fire-

Resistive Material Applied to Structural

Members

E760-92(R2005)..........Impact on Bonding of Sprayed Fire-Resistive

Material Applied to Structural Members

E761-92(R2005)..........Compressive Strength of Fire-Resistive Material

Applied to Structural Members

E859-93(R2006)..........Air Erosion of Sprayed Fire-Resistive Materials

Applied to Structural Members

E937-93(R2005)..........Corrosion of Steel by Sprayed Fire-Resistive

Material Applied to Structural Members

E1042-02(R2008).........Acoustically, Absorptive Materials Applied by

Trowel or Spray.

G21-09..................Determining Resistance of Synthetic Polymeric

Materials to Fungi

C. Underwriters Laboratories, Inc. (UL):

Fire Resistance Directory...Latest Edition including Supplements

D. Warnock Hersey (WH):

Certification Listings..Latest Edition

E. Factory Mutual System (FM):

Approval Guide..........Latest Edition including Supplements

PART 2 - PRODUCTS

2.1 SPRAYED-ON FIREPROOFING

A. ASTM E1042, Class (a), Category A.

1. Type I, factory mixed cementitious materials with approved aggregate.

B. Materials containing asbestos are not permitted.

C. Fireproofing characteristics when applied in the thickness and density required to achieve the fire-rating specified.

Characteristic Test Results

1. Deflection ASTM E759 No cracking, spalling, or delamination when backing to which it is applied has a

07 81 00 - 4 deflection up to 1/120 in 3m (10 ft.)

2. Corrosion-Resistance ASTM E937 No promotion of corrosion of steel.

3. Bond Impact ASTM E760 No cracking, spalling, or delamination.

4. Cohesion/Adhesion

(Bond Strength)

ASTM E736 Minimum cohesive/adhesive strength of 9.57 kPa (200 lbf/ft2) for protected areas.

19.15 kPa (400 lbf/ft2) for exposed areas.

5. Air Erosion ASTM E859 Maximum gain weight of the collecting filter 0.27gm/m2 (0.025 gm/ft2).

6. Compressive Strength ASTM E761 Minimum compressive strength 48 kPa (1000psf).

7. Surface Burning Characteristics with adhesive and sealer to be used

ASTM E84 Flame spread 25 or less smoke developed 50 or less

8. Fungi Resistance ASTM G21 Resistance to mold growth when inoculated with aspergillus niger (28 days for general application)

2.2 ADHESIVE

A. Adhesive may be an integral part of the material or applied separately to surface receiving fireproofing material.

2.3 SEALER

A. Surface burning characteristics as specified for fireproofing material.

B. Fungus resistant.

C. Sealer may be an integral part of the material or applied separately to the exposed surface. When applied separately use contrasting color pigmented sealer, white preferred.

2.4 WATER

A. Clean, fresh, and free from organic and mineral impurities.

B. pH of 6.9 to 7.1.

2.5 MECHANICAL BOND MATERIAL

A. Expanded Metal Lath: ASTM C847, minimum weight of 0.92 kg/m2 (1.7 pounds per square yard).

B. Fasteners: ASTM C841.

07 81 00 - 5

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify surfaces to receive fireproofing are clean and free of dust, soot, oil, grease, water soluble materials or any foreign substance which would prevent adhesion of the fireproofing material.

B. Verify hangers, inserts and clips are installed before the application of fireproofing material.

C. Verify ductwork, piping, and other obstructing material and equipment is not installed that will interfere with fireproofing installation.

D. Verify concrete work on steel decking and concrete encased steel is completed.

E. Verify temperature, humidity and enclosure conditions are required by fire-proofing material manufacturer.

3.2 APPLICATION

A. Do not start application until written approval has been obtained from manufacturer of fireproofing materials that surfaces have been inspected by the manufacturer or his representative, and are suitable to receive sprayed-on fireproofing.

B. Coordinate application of fireproofing material with other trades.

C. Application of Metal Lath:

1. Apply to beam and columns having painted surfaces which fail ASTM

E736 Bond Test requirements in pre-application test area.

2. Apply to beam flanges 300 mm (12-inches) or more in width.

3. Apply to column flanges 400 mm (16-inches) or more in width.

4. Apply to beam or column web 400 mm (16-inches) or more in depth.

5. Tack weld or mechanically fasten on maximum of 300 mm (12-inch) center.

6. Lap and tie lath member in accordance with ASTM C841.

D. Mix and apply in accordance with manufacturer's instructions.

1. Mechanically control material and water ratios.

2. Apply adhesive and sealer, when not an integral part of the materials, in accordance with the manufacturer's instructions.

3. Apply to density and thickness indicated in UL Fire Resistance

Directory, FM Approval Guide, or WH Certification Listings unless specified otherwise. Test in accordance with ASTM E119.

4. Minimum applied dry density per cubic meter (cubic foot) for the underside of the walk on deck (interstitial) hung purl in or beam

07 81 00 - 6 and steel deck, columns in interstitial spaces and mechanical equipment rooms shall be as follows:

a. Type I - 240 kg/m3 (15 lb/ft3).

c. Materials with higher density of 640kg/m3 (40pcf) maybe used in some mechanical rooms or parking garages.

E. Application shall be completed in one area, inspected and approved by

Resident Engineer before removal of application equipment and proceeding with further work.

3.3 FIELD TESTS

A. Tests of applied material will be performed by VA retained Testing

Laboratory. See Section 01 45 29, TESTING LABORATORY SERVICES.

B. Resident Engineer will select area to be tested in specific bays on each floor using a geometric grid pattern.

C. Test for thickness and density in accordance with ASTM E605. Areas showing thickness less than that required as a result of fire endurance test will be rejected.

D. Areas showing less than required fireproofing characteristics will be rejected on the following field tests.

1. Test for cohesion/adhesion: ASTM E736.

2. Test for bond impact strength: ASTM E760.

3.4 PATCHING AND REPAIRING

A. Inspect after mechanical, electrical and other trades have completed work in contact with fireproofing material, but before sprayed material is covered by subsequent construction.

B. Perform corrective measures in accordance with fireproofing material

Manufacturer's recommendations.

1. Respray areas requiring additional fireproofing material to provide the required thickness, and replace dislodged or removed material.

2. Spray material for patching by machine directly on point to be patched, or into a container and then hand apply.

3. Hand mixing of material is not permitted.

C. Repair:

1. Respray all test and rejected areas.

2. Patch fireproofing material which is removed or disturbed after approval.

D. Perform final inspection of sprayed areas after patching and repair.

07 81 00 - 7

3.5 SCHEDULE

A. Apply fireproofing material in interior structural steel members and on underside of interior steel floor and roof decks, except on following surfaces:

1. Structural steel and underside of steel decks in elevator or dumbwaiter machine rooms.

2. Steel members in elevator hoist ways.

3. Areas used as air handling plenums.

4. Steel to be encased in concrete or designated to receive other type of fireproofing.

B. Type II:

1. One hour fire rating: Roof.

2. Two hour fire rating: Columns, Beams and Girders.

- - - E N D - - -