VA 03 55 11-2011 GYPSUM CONCRETE FLOOR DECKS.pdf

1、07-11 03 55 11 - 1 SECTION 03 55 11 GYPSUM CONCRETE FLOOR DECKS SPEC WRITER NOTE: 1. Delete between / _/ if not applicable to project. Also delete any other item or paragraph in the section and renumber the paragraphs. 2. This is a sole source system. Prior approval for its use is required. 3. Insur

2、e details show system. PART 1 - GENERAL 1.1 DESCRIPTION A. Section specifies gypsum plank systems for fire rated interstitial decks /. B. Optional system for interstitial decks. / 1.2 RELATED WORK A. Steel Framing: Section 05 12 00, STRUCTURAL STEEL FRAMING B. Sealer for interstitial floor and floor

3、 paint for traffic area in interstitial space: Section 09 91 00, PAINTING. 1.3 QUALITY CONTROL A. Work performed by experienced, qualified installers approved by manufacturer of gypsum plank. B. Gypsum materials products of one manufacturer. 1.4 SUBMITTALS A. Submit in accordance with Section 01 33

4、23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES. B. Fire Tests: Fire tests, data and certifications substantiating that Gypsum Plank Decking complies with fire rating requirements. C. Shop Drawings: Show typical plank layouts, perimeter and framed opening supports and details of construction, installati

5、on, fastenings and grouting. D. Manufacturers Literature and Data: Each item specified. E. Load tables for sub-purlins. 1.5 DELIVERY AND STORAGE A. Deliver materials in original packages, containers, or bundles bearing brand name and name of manufacturer. B. Store materials in a manner that prevents

6、 damage before use. When stored under tarpaulins, provide ventilation to prevent moisture accumulation under tarpaulin. C. Store gypsum planks flat and off ground. Handle and stack in a manner to prevent damage to face, ends, and edges and keep dry until used. D. Store gypsum concrete off ground and

7、 keep dry until used. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 03 55 11 - 2 1.6 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extent referenced. Publications are referenced in the text

8、by basic designations only. B. American Society for Testing and Materials (ASTM): A36/A36M-08 Standard Specifications for Carbon Structural Steel A82-07 . Standard Specifications for Steel Wire, Plain, for Concrete Reinforcement A499-89(R2008) . Standard Specifications for Steel Bars and Shapes, Car

9、bon Rolled from “T“ Rails A568/A568M-09 Standard specification for Steel, Sheet, Carbon, Structural and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled General Requirements for A653/A653M-10 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-coated (Galvannealed

10、) by the Hot-Dip Process C317/C317M-00(R2010) . Standard specification for Gypsum Concrete C1396/C1396M-09 Standard Specification for Gypsum Board E119-10 Standard Test Methods for Fire Tests of Building Construction and Materials C. American Welding Society Publication (AWS): D1.1/D1.1M-10 Structur

11、al Welding Code - Steel PART 2 - PRODUCTS 2.1 MATERIALS A. Sub-purlins: 1. Open web truss-tees, hot-rolled bulb-tees or folded sheet metal tees as required by design loads, spans and fire ratings. 2. Flanges: Provide 16 mm (5/8-inch) minimum bearing for gypsum planks. 3. Galvanize or factory coat su

12、b-purlins with manufacturers standard primer. 4. Open web truss-tees: Fabricate from cold-formed steel wire conforming to ASTM A82. 5. Hot-rolled bulb-tees: Rail-shaped, fabricated from hot-rolled steel conforming to ASTM A36 or ASTM A499. 6. Folded sheet metal tees: Fabricate from sheet steel confo

13、rming to ASTM A653 and ASTM A568. B. Cross-Tees: 1. Cold-Formed, Fabrication from sheet steel conforming to ASTM A525 or ASTM A568. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 03 55 11 - 3 2. Size: 30 mm (1-1/4-inches) by 13 mm (1/2-inch) b

14、y 0.6 mm (0.023-inch) thick by 600 mm (24-inches) long. C. Gypsum Deck Plank: 1. Fabricated of gypsum board: ASTM C1396. 2. Nominal Size: 50 mm (2-inches) thick by 600 mm (24-inches) wide by main purlin span. Where possible, length should span two main purlin spans. 3. Factory laminate from two 25 m

15、m (1-inch) thick gypsum panels with top panel edge set back along sub-purlin edge not more than 13 mm (1/2-inch). 4. Edge encased in water-resistant paper. D. Gypsum Deck Panels: ASTM C1396, Type “X“, 16 mm (5/8-inch) thick by 600 mm (24-inches) wide by main purlin span. E. Grout: Gypsum Concrete: A

16、STM C317, Class A, 3.5 MPa (500 psi) minimum compressive strength. 2.2 DECK SYSTEM A. Interstitial deck: Provide two-hour fire rating as tested by Gypsum plank manufacturer under ASTM E119 fire test conditions modified to simulate the Department of Veterans Affairs Building System test described in

17、National Institute of Standards and Technology Report NBSIR 85-3158, “Fire Performance of Interstitial Space Construction System“. PART 3 - EXECUTION 3.1 INSPECTION A. Examine substrates, framing and conditions under which gypsum plank is to be installed and notify Resident Engineer in writing of co

18、nditions detrimental to proper and timely completion. B. Do not proceed until unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Weld per AWS D1.1. B. Sub-purlins: 1. Space at approximately 650 mm (24-5/8-inches) on center to provide minimum 16 mm (5/8-inch) continuous bearing for gy

19、psum plank or deck. 2. Install framing of openings. 3. Touch up welds with same type of rust-inhibitive paint used for primer. SPEC WRITER NOTE: 1. When sub-purlins are used to carry superimposed loads, such as ceilings, lighting fixtures or other building components, consult load tables for sub-pur

20、lin size selection. 2. Select and detail appropriate attachment methods. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 03 55 11 - 4 /4. Interstitial Decks: Use 19 mm (3/4-inch) fillet welds on both sides of sub-purlins at math purlin. / C. Fo

21、r Two Hour fire rated interstitial decks /. 1. Place gypsum deck panels on bottom flanges of sub-purlins with 16 mm (5/8-inch) minimum continuous bearing. 2. Place gypsum deck plank over gypsum deck panels, with off-set edges “up“ to form a “T“ receptacle for gypsum grout. 3. Cut to fit around openi

22、ngs shown. 4. Install plank to conform to fire test assembly. D. Provide continuous 16 mm (5/8-inch) minimum bearing for plank support at deck perimeter, plank ends and openings exceeding 200 mm (8-inches). E. Grout: 1. Mix gypsum concrete thoroughly using a minimum amount of water to form a thick,

23、pourable consistency. 2. Fill edge joints to slight excess with single pour at sub-purlins. a. Grout end joints on single span system against steel framing. b. After initial set, strike of excess to form smooth, flush joint. /c. Form cant strips and curbs where shown. / /3. Fill joints at roof ridge

24、s, hips and valleys. / F. Patching: 1. Fill with grout and smooth any surface damage to gypsum plank. 2. Remove and replace cracked, broken, and plank damaged beyond repair. G. Cleaning and Protection: 1. Upon completion of gypsum plank decking, remove, debris and sweep surface clean. Leave ready fo

25、r subsequent work. 2. Protect finished deck from weather and subsequent construction operations. 3. Provide hardboard or plywood temporary protection over decking subject to repetitive impact or wheeled loads. - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-