VA 03 41 13-2011 PRECAST CONCRETE HOLLOW CORE PLANKS.pdf

1、07-11 03 41 13 - 1 SECTION 03 41 13 PRECAST CONCRETE HOLLOW CORE PLANKS SPEC WRITER NOTE: 1. Delete between /-/ if not applicable to project. 2. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 3. Verify method of anchorage and plank shown on structu

2、ral drawings. 4. Verify details show plank shape. PART 1 - GENERAL 1.1 DESCRIPTION A. Section specifies precast concrete roof planks. B. Designs: / channel / flat plank / steel edge flat plank. 1.2 MANUFACTURERS QUALIFICATIONS Products of one manufacturer regularly engaged in making precast concrete

3、 planks of type specified. 1.4 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES . B. Shop Drawings: Roofing plank framing layout, anchorage, and installation details. C. Manufacturers Certificates: Stating plank conforms to specification requirements

4、. SPEC WRITER NOTE: 1. Make material requirements agree with applicable requirements specified in the referenced Applicable Publications. 2. Update and specify only that which applies to project. 1.5 APPLICABLE PUBLICATIONS A. Publications listed below form a part of specification to extent referenc

5、ed. Publications are referred to in text by basic designation only. B. American Society for Testing and Materials (ASTM): A36/A36M-08 Carbon Structural Steel A185/A185M-07 Steel Welded Wire, Reinforcement, Plain, for Concrete A615/A615M-09 Deformed and Plain Carbon-Steel Bars for Concrete Reinforcem

6、ent Provided by IHSNot for Resale-,-,-07-11 03 41 13 - 2 A653/A653M-10 Steel Sheet, Zinc Coated (Galvanized) or Zinc-Iron Alloy Coated (Galvannealed) by the Hot-Dip Process A996/A996M-09 Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement C150/C150M-09 Portland Cement C494/C494M-10 Ch

7、emical Admixtures for Concrete C881/C881M-02 Epoxy-Resin-Base Bonding Systems for Concrete PART 2 - PRODUCTS SPEC WRITER NOTE: 1. Check Structural Engineer for type and thickness or depth of planks required. 2. Do not use nailing planks for adhered roofing. 3. Coordinate with roofing Sections to det

8、ermine fasteners required to anchor roofing membrane. 2.1 MATERIALS A. Portland Cement: ASTM C150, Type I or III. B. Reinforcing: 1. Welded wire Fabric: ASTM A185, galvanized size as required by plank manufacturers. 2. Bars: ASTM A615 or A996, deformed. Grade as required by plank manufacturer. C. Ch

9、emical Admixtures: ASTM C494, Type as required by plank manufacturer. D. Bonding Adhesive: ASTM C881. E. Steel Clips: 1. ASTM A653. 2. Designed to anchor planks to steel framing. F. Grout: 1. Cement Grout: One part portland cement and two parts fine sand. 2. Epoxy Grout: ASTM C881. G. Steel Angles:

10、ASTM A36. 2.2 FABRICATION A. Planks: 1. Shapes: / channel / tongue and grooved flat plank / tongue and grooved steel edge flat plank / as shown. 2. Manufacture: Reinforced concrete, composed of / lightweight / regular weight / mineral aggregate, portland cement and water, resulting in a unit having

11、a minimum compressive strength of 24000 MPa / (3500 psi) for structural (non-nailable) slabs; 6900 Mpa (1000 psi) for nailable slabs /. B. Allowable Tolerances: Provided by IHSNot for Resale-,-,-07-11 03 41 13 - 3 1. Thickness and depth 3 mm, (1/8 inch). 2. Length and width 6 mm (1/4 inch). 3. Cambe

12、r or Sweep: a. Plus or minus 6 mm (1/4-inch). b. Variation in camber between adjacent and abutting members, 3 mm (1/8 inch). 4. Inserts, bolts and pipe sleeves: Deviation from location shown - not more than 10 mm (3/8 inch). C. Exposed concrete surfaces natural cement color free of honeycomb, pit ho

13、les, or other defects. D. Not acceptable: Warped, cracked or broken units. E. Flat Plank: 1. Fabricate to thickness shown with tongue and groove edges at abutting edges, square edges at exposed roof ends and sides. 2. Reinforce with wire fabric in both top and bottom of slab. /3. Where shown, form t

14、ongue and groove edges from galvanized steel, sheet cast integrally with slab. Weld steel edge at corners. / F. Channel Plank: 1. Fabricate to thickness shown. 2. Provide plank with square edges and closed ends and sides at roof edges except where concealed in finished work. 3. Reinforce channel pla

15、nk with wire fabric in the web section, and steel reinforcement bars in flanges. G. Steel Clips: 1. Provide zinc-coated steel clips for plank to secure plank to framing. 2. For inclines exceeding 1 in 6 (2-inches per foot), provide an angle clip to support planks at lower purlin. /G. Where nailing i

16、s required for fastening material to roofing slabs, provide metal inserts or nailing concrete in slabs. / H. Structural Steel Headers: 1. ASTM A36. 2. Angle sizes as shown. PART 3 - EXECUTION 3.1 INSTALLATION A. Install slabs in accordance with manufacturers instructions. B. Before erection of slabs

17、, clean bearing surfaces free from dirt, mortar particles, and trash. / Level top masonry course with cement mortar or grout to provide even, solid bearing. / C. Erect slabs to prevent chipping and cracking and to provide a level deck surface. 1. Stagger end joints Provided by IHSNot for Resale-,-,-

18、07-11 03 41 13 - 4 2. Locate end joints on centerline of support. 3. After erection, fill / joints on upper side of channel slabs with epoxy grout cement / and joints on upper side of flat slabs with / epoxy grout / or / portland cement grout /. 4. Finish grout joint flush. D. Erect steel edged tong

19、ue and groove plank so that planks have one structural support. 1. Form tight and closed joints at sides and ends of slabs. 2. Clip slabs to structural support. E. Do not make cutouts without approval of Resident Engineer. 1. Form openings or carefully saw cut; do not punch openings. 2. Locate openi

20、ngs less than 150 mm (6-inches) wide in sections of plank between reinforcing bars. 3. Frame openings larger than 150 mm (6-inches) wide with structural steel headers. SPEC WRITER NOTE: 1. Coordinate with structural (steel section and details to show angle headers or supports for large openings. 2.

21、Coordinate to show layout at openings, framing, and planks required. 3.2 REPLACEMENT AND REPAIR A. Replace broken, cracked, and warped plank, and planks exceeding allowable tolerances. B. Plank having defects, not affecting serviceability of deck, may be repaired with epoxy grout if approved by Resident Engineer. - - - E N D - - - Provided by IHSNot for Resale-,-,-