SECTION SPRAY-APPLIED FIREPROOFING

Transcription

1 SECTION SPRAY-APPLIED FIREPROOFING PART 1 GENERAL 1.1 SUMMARY A. Related Documents: Provisions established in General and Supplementary Conditions of the Contract, Division 1 General Requirements, and the Drawings are collectively applicable to this Section. B. Section Includes: 1. Spray applied fireproofing, gypsum based Cementitious. 1.2 SUBMITTALS A. General: Submit in accordance with Section B. Product Data: Submit manufacturer s printed technical literature for each product indicating characteristics and performance criteria. C. Design Data: 1. Indicate UL or other nationally recognized independent testing agency test assembly number. 2. Submit description of areas and elements to receive fireproofing for each fire resistance rating. D. Calculations: 1. Furnish calculations signed and sealed by registered Professional Fire Protection Engineer, responsible for design, licensed in jurisdiction of Project location. 2. Submit calculations of fireproofing thickness for steel members smaller than minimum size indicated by fire resistance rating. 3. Submit calculations of fireproofing thickness for steel members for larger steel members on which applicator intends to use less fireproofing than shown in fire resistance rating. E. Test Reports: 1. Submit certified test results from independent testing laboratory attesting compliance of sprayed fireproofing products with performance requirements indicated in Field Quality Control article. 2. Submit certified test results of in-place testing required for field quality control. F. Certification: Submit certifications specified in Quality Assurance article in Part 3. G. Manufacturer s Instructions: Submit manufacturer s printed application instructions, including procedures, techniques, and quality control methods. 1.3 QUALITY ASSURANCE A. Single Source Responsibility: 1. Furnish products from one manufacturer for entire Project, unless otherwise acceptable to Owner s Representative. 2. Provide fireproofing as complete system, including wire fabric, lath, hangers, and accessory items necessary for proper function. B. Applicator Qualifications: 1. Company specializing in application of specified sprayed fireproofing. 2. Minimum 3 years documented experience. 3. Provide list of projects having similar scope of work, identify by name, location, date, reference name and phone number. 4. Licensed or approved by manufacturer of fireproofing materials. C. Regulatory Requirements: Comply with UL or other nationally recognized independent testing agency test for design and construction of fire resistance system. BOKA Powell Project No February 2007

2 D. Certifications: 1. Submit manufacturer s certification: a. Fireproofing materials are non-combustible, non-corrosive, and asbestos-free. b. Fireproofing materials furnished for Project meet or exceed specified requirements. c. Fireproofing materials are compatible and performance will not be impaired by steel primers. 2. Submit Contractor s and applicator s certification that products are installed in accordance with Contract Documents. 3. Submit independent testing laboratory report based on inspection and testing specified as part of Field Quality Control. 4. Submit certificate of compliance from authority having jurisdiction indicating approval of fireproofing materials and proposed thicknesses. 1.4 FIELD SAMPLES A. Comply with requirements of Section B. Provide samples of approximately 100 square feet on erected job site members at locations selected by Owner s Representative. C. Comply with project requirements regarding thickness, density of application, fire rating, and finish texture. D. Examination: 1. Examine installation within one hour after completion. 2. Where shrinkage and cracking are evident: Remove fireproofing, adjust mixture and method of application, and reapply fireproofing. E. Acceptance: 1. Make adjustments necessary to obtain acceptance from Owner s Representative. Do not proceed with further work until sample installation has been accepted by Owner s Representative. 2. Accepted installation establishes minimum quality standards for workmanship and materials for Project. 3. Accepted sample may remain as part of Work. 1.5 DELIVERY, STORAGE AND HANDLING A. Comply with requirements of Section B. Packing, Shipping, Handling, and Unloading: Deliver materials in manufacturer s unopened containers with manufacturers name, product identification, lot number, and mixing and installation instructions. C. Storage and Protection: Store materials to prevent deterioration and damage due to moisture, temperature change, and contamination by harmful materials. 1.6 ENVIRONMENTAL REQUIREMENTS A. Do not apply spray fireproofing when temperature of substrate and surrounding air is below 40 degrees F. B. Ventilation: 1. Provide ventilation in areas to receive fireproofing during application and until applied materials are thoroughly dry. 2. Provide ventilation in areas lacking natural ventilation. C. Maintain non-toxic working area free of matter which can cause airborne health hazard during application. Provide temporary enclosure to prevent overspray from contaminating air. 1.7 SEQUENCING AND SCHEDULING A. Coordinate installation to avoid damage to sprayed fireproofing by subsequent trades and harmful environmental conditions. BOKA Powell Project No February 2007

3 B. Do not apply fireproofing to metal roof decking substrates until roofing has been completed. Prohibit roof traffic during application and drying of fireproofing. C. Do not apply fireproofing until clips, hangers, supports, sleeves, and other items penetrating fireproofing are in place. D. Defer installing ducts, equipment, piping, and other items that would obstruct with application of fireproofing. E. Do not install enclosing and concealing construction until after: 1. Fireproofing has been inspected and tested. 2. Corrections have been made to fireproofing. F. Do not apply fireproofing to floor decks until concrete work is complete. 1.8 WARRANTY A. Warrant installed fireproofing to be free from defects in material and workmanship for 2 years. B. Include coverage for fireproofing to remain free from cracking, checking, dusting, flaking, spalling, separation, and blistering. C. Include coverage for replacement and repair of failures. PART 2 PRODUCTS 2.1 PRODUCTS AND MANUFACTURERS A. Acceptable Gypsum-Based Cementitious Products and Manufacturers: 1. Pyrolite 1 by Carboline, St. Louis, MO. 2. Monokote Type MK6/HY by Construction Products Division of W. R. Grace and Co., Cambridge, MA. 3. Type 5 by Southwest Vermiculite Co., Albuquerque, NM. 4. Cafco 300 by Isolatek International, Netcong, NJ. 5. CP-2 by Mondoval Vermiculite Products, Houston, TX. B. Acceptable Impact Resistant Sprayed Fireproofing Products and Manufacturers: 1. Pyrolite 1 MD, Carboline, St. Louis, MO. 2. Monokote 106, Construction Products Division of W. R. Grace and Co., Cambridge, MA. 3. Type 5 MD, Engineered Architectural Services, Manasquan, NJ. 4. Cafco 560, Isolatek International, Netcong, NJ. 5. P-20, Mandoval Vermiculite Products, Houston, TX. C. Substitutions: Submit in accordance with Section MATERIALS A. Gypsum Based Sprayed Fireproofing: 1. Factory formulated mixture of asbestos-free gypsum-based materials with aggregates. 2. Performance Criteria: a. Dry Density: ASTM E 605, 15 pcf minimum b. Deflection: ASTM E 759, no cracks, spalling, and delaminations from surface to which fireproofing is applied. c. Bond Impact: ASTM E 760, no cracks, spalling, and delaminations from surface to which fireproofing is applied. d. Adhesion: ASTM E 736, 200 psf minimum. e. Air Erosion: ASTM E 859, gm/square foot maximum. f. Compressive Strength: ASTM E 761, 1600 psf minimum. g. Corrosion Resistance: ASTM E 937, no evidence of corrosion. h. Surface Burning Characteristics: ASTM E 84, flame spread of 10, smoke development of 0. B. Impact Resistant Sprayed Fireproofing: Factory formulated mixture of asbestos-free cementitious materials with aggregates. BOKA Powell Project No February 2007

4 1. Performance Criteria: a. Density: ASTM E 605, 22 pcf minimum. b. Deflection: ASTM E 759, no cracks and delaminations from surface to which fireproofing is applied. c. Bond Impact: ASTM E 760, no cracks and delaminations from surface to which fireproofing is applied. d. Adhesion: ASTM E 736, 300 psf minimum. e. Air Erosion: ASTM E 859, gm/square foot maximum. f. Compressive Strength: ASTM E 761, 10,000 psf minimum. g. Corrosion Resistance: ASTM E 937, no evidence of corrosion. h. Surface Burning Characteristics: ASTM E 84, flame spread of 10, smoke development of Cementitious materials with aggregates only, fibrous materials not allowed. C. Water: Clean, fresh, suitable for domestic consumption. D. Bonding Primer/Adhesive: Non-combustible type required by fireproofing manufacturer. 2.3 ACCESSORIES A. Metal Lath: 1. Expanded metal lath fabricated from material of weight, configuration, and finish required to comply with fire-resistive designs indicated and fireproofing manufacturer s recommendations. 2. Include clips, lathing accessories, and other anchorage devices required to attach lath to substrates and to receive fireproofing. B. Seal Coat: As recommended by manufacturer. Color tinted. PART 3 EXECUTION 3.1 EXAMINATION A. Examine conditions and proceed with work in accordance with Section PREPARATION A. Protect adjacent surfaces and equipment from damage by overspray, fall-out, and dusting. B. Close off and seal adjacent duct work. C. Clean substrate of dirt, dust, grease, oil, mill scale, loose rust and paint, frost, and other matter which could adversely affect bond of sprayed fireproofing to substrate. D. Remove incompatible materials which would adversely affect bond. E. Provide temporary enclosures to prevent deterioration of fireproofing for interior applications exposed to detrimental environmental conditions. 3.3 APPLICATION A. Apply bonding primer/adhesive to surfaces where required by fire-resistance rating and manufacturer. B. Metal Lath: 1. Install metal lath to comply with fire-resistance ratings and recommendations of fireproofing manufacturer for conditions of exposure and intended use. 2. Securely attach lath to substrate in position required for support and reinforcement of fireproofing. 3. Use anchorage devices of type recommended by fireproofing manufacturer. C. Mix and apply materials in accordance with manufacturer s instructions. D. Apply sprayed fireproofing in sufficient thickness to achieve rating with as many passes as necessary. Cover substrate in a monolithic blanket of uniform density and texture. E. Exercise care to spray material completely into inverted corners and to build fireproofing to full thickness at projecting corners. BOKA Powell Project No February 2007

5 F. Sprayed Fireproofing Seal Coat: Spray apply in quantity of coats and at coverage rate required by product manufacturer. 1. Apply tinted sealer to differentiate it from fireproofing over which it is applied. 2. Apply seal coat for fireproofing at exposed locations and where subject to air movement (plenums, etc) which might cause erosion of fibers. 3.4 FIELD QUALITY CONTROL A. Owner will employ and pay for services of an independent testing laboratory to perform field quality control testing. B. Tests: 1. Perform thickness and density tests on installed fireproofing in accordance with ASTM E Provide thickness tests as follows: a. 25 percent of primary beams and columns. b. 10 percent of secondary beams and columns. c. 10 locations of deck for each 10,000 square feet of floor area or portion thereof. 3. Provide one density test for each 10,000 square feet of floor area or portion thereof, but not less than two per floor. 4. Provide one bond strength test in accordance with ASTM E 736 for each 10,000 square feet of floor area or portion thereof, but not less than two per floor. 3.5 ADJUSTING A. Repair and replace fireproofing within areas where test results indicate fireproofing does not comply with requirements. B. Patch damage to fireproofing caused by other trades before final inspection of this work and prior to enclosure by other building components. C. Patch areas where average thickness of material is less than minimum required by indicated design, and locations where individual thickness is deficient by more than 1/4 inch or 25 percent of required thickness, whichever is less. D. Patch areas where inspection cuts and tests have been made. 3.6 CLEANING A. Upon completion of spraying operations in each containable area of project: 1. Remove overspray and fallout of materials from adjacent surfaces. 2. Clean exposed surfaces to remove evidence of soiling. 3.7 PROTECTION A. Protect fireproofing from damage resulting from subsequent construction operations and other causes so that fireproofing will be without damage and deterioration at date of Substantial Completion. B. Repair and replace work which has not been successfully protected. 3.8 SCHEDULE A. Apply fireproofing to the following members to attain UL designs and hourly ratings indicated: 1. Refer to Drawings END OF SECTION BOKA Powell Project No February 2007