1、11-11 07 81 00 - 1 SECTION 07 81 00 APPLIED FIREPROOFING SPEC WRITER NOTES: 1. Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. Verify that different types of fire rating is clearly defined for loca
2、tions either on the drawings or in a schedule. 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
3、DATA, AND SAMPLES. B. Manufacturers Literature and Data: 1. Manufacturers complete and detailed application instructions and specifications. 2. Manufacturers repair and patching instructions. C. Certificates: 1. Certificate from testing laboratory attesting fireproofing material and application meth
4、od 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. Manufacturers certificate indicating sprayed-on fireproofing material supplied under the Contract is same within manufacturing toler
5、ance as fireproofing material tested. D. Miscellaneous: 1. Manufacturers written approval of surfaces to receive sprayed-on fireproofing. 2. Manufacturers written approval of completed installation. 3. Manufacturers written approval of the applicators of fireproofing material. Provided by IHSNot for
6、 ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 2 1.3 PRODUCT DELIVERY, STORAGE AND HANDLING A. Deliver to job-site in sealed containers marked and labeled to show manufacturers name and brand and certification of compliance with the specified requirement
7、s. 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. E. Remove materials that have been exposed to water before installation from the site. 1.4 QUALITY CONTROL A. Test for fire endurance in accord
8、ance with ASTM E119, for fire rating specified, in a nationally recognized laboratory. B. Manufacturers inspection and approval of surfaces to receive fireproofing as specified under paragraph Examination. C. Manufacturers approval of fireproofing applications. D. Manufacturers approval of completed
9、 installation. E. Manufacturers 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. SPEC WRITER NOTES: 1. Modify requirement for extent of test ar
10、ea to suit project conditions. 2. Apply test to each type of substrate. 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 sele
11、cted 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.
12、Keep approved installation area open for observation as criteria for sprayed-on fireproofing. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 3 1.5 APPLICABLE PUBLICATIONS A. Publications listed below form a part of this specificatio
13、n 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 E11
14、9-10 Fire Tests of Building Construction and Materials 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 Deflecti
15、on 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 Spray
16、ed 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 Materia
17、ls 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 Provided by IHSNot for ResaleNo rep
18、roduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 4 PART 2 - PRODUCTS SPEC WRITER NOTES: 1. Make Material requirements agree with applicable requirements specified in the reference Applicable Publications. 2. Update and specify only that which applies to the project. 3.
19、 Allow option for use of both types of materials. See schedule paragraph. 2.1 SPRAYED-ON FIREPROOFING A. ASTM E1042, Class (a), Category A. 1. Type I, factory mixed cementitious materials with approved aggregate. 2. Type II, factory mixed mineral fiber with integral inorganic binders minimum 240 kg/
20、m3 (15 1b/ft3) density per ASTM E605 test unless specified otherwise. Use in areas that are completely encased. 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
21、Test Results 1. Deflection ASTM E759 No cracking, spalling, or delamination when backing to which it is applied has a 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. Cohesi
22、on/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
23、 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 Provided by IHSNot for ResaleNo rep
24、roduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 5 (28 days for general application) 2.2 ADHESIVE A. Bonding adhesive for Type II (fibrous) materials as recommended and supplied by the fireproofing material manufacturer. B. Adhesive may be an integral part of the mater
25、ial or applied separately to surface receiving fireproofing material. 2.3 SEALER A. Sealer for Type II (fibrous) material as recommended and supplied by the fireproofing material manufacturer. B. Surface burning characteristics as specified for fireproofing material. C. Fungus resistant. D. Sealer m
26、ay 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
27、 Metal Lath: ASTM C847, minimum weight of 0.92 kg/m2 (1.7 pounds per square yard). B. Fasteners: ASTM C841. 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 preven
28、t 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 concret
29、e work on steel decking and concrete encased steel is completed. E. Verify temperature 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 s
30、urfaces have been Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 6 inspected by the manufacturer or his representative, and are suitable to receive sprayed-on fireproofing. B. Coordinate application of fireproofing material with oth
31、er 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. App
32、ly 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 manufacturers instructions. 1. Mechanically control material and water
33、 ratios. 2. Apply adhesive and sealer, when not an integral part of the materials, in accordance with the manufacturers 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 accor
34、dance with ASTM E119. SPEC WRITER NOTES: 1. Use Type I material in high traffic areas where it is not encased and subject to possible damage due to accessibility, like columns in interstitial spaces and mechanical equipment rooms. 2. Use of Type II material is an option where material is covered up
35、by subsequent construction and not readily accessible. Type II material with 22 pound density may be used in some exposed areas. 4. Minimum applied dry density per cubic meter (cubic foot) for the underside of the walk on deck (interstitial) hung purl in or beam and steel deck, columns in interstiti
36、al spaces and mechanical equipment rooms shall be as follows: a. Type I - 240 kg/m3 (15 lb/ft3). b. Type II - 350 kg/m3 (22 lb/ft3). /c. Materials with higher density of 640kg/m3 (40pcf) maybe used in some mechanical rooms or parking garages./ Provided by IHSNot for ResaleNo reproduction or networki
37、ng permitted without license from IHS-,-,-11-11 07 81 00 - 7 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 retai
38、ned 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
39、 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. 3.3 PATCHING AND REPAIRING A. Inspect after mec
40、hanical, 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 Manufacturers recommendations. 1. Respray areas requiring additio
41、nal 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
42、rejected areas. 2. Patch fireproofing material which is removed or disturbed after approval. D. Perform final inspection of sprayed areas after patching and repair. SPEC WRITER NOTE: Spray-on fireproofing materials are restricted on the surfaces listed in Schedule A. This does not exempt these surfa
43、ces from the required fire protection. Designer must select other fire protection measures, like enclosing in plaster or concrete to provide necessary fire rating. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 07 81 00 - 8 3.5 SCHEDULE A. App
44、ly 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
45、 air handling plenums. 4. Steel to be encased in concrete or designated to receive other type of fireproofing. SPEC WRITER NOTES: 1. Coordinate with the drawings for identification of different types of fireproofing and hour rating. Identify as “FIREPROOFING I“ or FIREPROOFING II with hour rating. 2
46、. If not shown clearly identify type location and ratings in Schedule B. paragraph. B. Type I: 1. One hour fire rating. 2. Two hour fire rating. 3. Three hour fire rating. C. Type II: 1. One hour fire rating. 2. Two hour fire rating. - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
