VA 05 40 00-2011 COLD-FORMED METAL FRAMING.pdf

1、07-11 05 40 00 - 1 SECTION 05 40 00 COLD-FORMED METAL FRAMING SPEC WRITER NOTE: Delete between /-/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION: A. This section specifies materials an

2、d services required for installation of cold-formed steel, including tracks and required accessories as shown and specified. This Section includes the following: SPEC WRITER NOTE: Adjust the list below to suit the Project. 1. Exterior load-bearing steel stud walls. 2. Interior load-bearing steel stu

3、d walls. 3. Exterior non-load-bearing steel stud curtain wall. 4. Steel joists. 5. Steel trusses. 1.2 RELATED WORK: A. Structural steel framing: Section 05 12 00, STRUCTURAL STEEL FRAMING. B. Open web steel joists: Section 05 21 00, STEEL JOIST FRAMING. C. Non-load-bearing metal stud framing assembl

4、ies: Section 09 22 16, NON-STRUCTURAL METAL FRAMING. D. Gypsum board assemblies: Section 09 29 00, GYPSUM BOARD. 1.3 DESIGN REQUIREMENTS: A. Design steel in accordance with American Iron and Steel Institute Publication “Specification for the Design of Cold-Formed Steel Structural Members“, except as

5、 otherwise shown or specified. SPEC WRITER NOTE: Retain one of the two “Structural Performance” articles below. Retain the first article when the Architect provides cold-formed steel physical and structural properties. Retain the second article when the Provided by IHSNot for ResaleNo reproduction o

6、r networking permitted without license from IHS-,-,-07-11 05 40 00 - 2 fabricator is responsible for designing the metal framing. B. Structural Performance: Engineer, fabricate and erect cold-formed metal framing with the minimum physical and structural properties indicated. C. Structural Performanc

7、e: Engineer, fabricate, and erect cold-formed metal framing to withstand design loads within limits and under conditions required. 1. Design Loads: As indicated. 2. Design framing systems to withstand design loads without deflections greater than the following: SPEC WRITER NOTE: Deflection limits be

8、low are examples only. Select deflection limits as appropriate for wall, floor, and ceiling finish materials. a. Exterior Load-Bearing Walls: Lateral deflection of / 1/240 / / 1/360 / / 1/600 / of the wall height. b. Interior Load-Bearing Walls: Lateral deflection of / 1/240 / / 1/360 / of the wall

9、height. c. Exterior Non-load-Bearing Curtain wall: Lateral deflection of / 1/240 / / 1/360 / / 1/600 / / 1/720 / of the wall height. d. Floor Joists: Vertical deflection of / 1/240 / / 1/360 / of the span. e. Roof Trusses: Vertical deflection of / 1/240 / /1/360 / of the span. 3. Design framing syst

10、ems to provide for movement of framing members without damage or overstressing, sheathing failure, connection failure, undue strain on fasteners and anchors, or other detrimental effects when subject to a maximum ambient temperature change (range) of 67 degrees C (120 degrees F). 4. Design framing s

11、ystem to accommodate deflection of primary building structure and construction tolerances, and to maintain clearances at openings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 3 5. Design exterior non-load-bearing curtain wall fra

12、ming to accommodate lateral deflection without regard to contribution of sheathing materials. 6. Engineering Responsibility: Engage a fabricator who assumes undivided responsibility for engineering cold-formed metal framing by employing a qualified professional engineer to prepare design calculation

13、s, shop drawings, and other structural data. 1.4 SUBMITTALS: A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Shop Drawings: Shop and erection drawings showing steel unit layout, connections to supporting members, and information necessary to complete insta

14、llation as shown and specified. C. Manufacturers Literature and Data: Showing steel component sections and specifying structural characteristics. SPEC WRITER NOTE: Retain the paragraph below when cold-formed metal framing is indicated to withstand specific design loadings. D. For cold-formed metal f

15、raming indicated to comply with certain design loadings, include structural analysis data sealed and signed by the qualified professional engineer who was responsible for its preparation. 1.5 APPLICABLE PUBLICATIONS: A. Publications listed below form a part of this specification to extent referenced

16、. Publications are referenced in text by basic designation only. B. American Iron and Steel Institute (AISI): Specification and Commentary for the Design of Cold-Formed Steel Structural Members (1996) C. American Society of Testing and Materials (ASTM): A36/A36M-08 Standard Specifications for Carbon

17、 Structural Steel Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 4 A123/A123M-09 Standard Specifications for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products A153/A153M-09 Standard Specifications for Zinc Coating (Hot-D

18、ip) on Iron and Steel Hardware A307-10 Standard Specifications for Carbon Steel Bolts and Studs A653/A653M-10 Standard Specifications for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process C1107/C1107M-08 Standard Specifications for Packaged Dry, Hy

19、draulic-Cement Grout (Non-shrink) E488-96(R2003) . Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements E1190-95(R2007) Standard Test Methods for Strength of Power-Actuated Fasteners Installed in Structural Members D. American Welding Society (AWS): D1.3/D1.3M-08 Structural

20、 Welding Code-Sheet Steel E. Military Specifications (Mil. Spec.): MIL-P-21035B . Paint, High Zinc Dust Content, Galvanizing Repair PART 2 - PRODUCTS 2.1 MATERIALS: SPEC WRITER NOTE: Select G60 or G90 coating. The Brick Industry Association recommends G90 for stud backup for brick veneer application

21、s. A. Sheet Steel for joists, studs and accessories 16 gage and heavier: ASTM A653, structural steel, zinc coated / G60 / / G90 /, with a yield of 340 MPa (50 ksi) minimum. B. Sheet Steel for joists, studs and accessories 18 gage and lighter: ASTM A653, structural steel, zinc coated / G60 / / G90 /,

22、 with a yield of 230 MPa (33 ksi) minimum. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 5 C. Galvanizing Repair Paint: MIL-P-21035B. SPEC WRITER NOTE: Retain grout when concrete or masonry substrates require leveling prior to sett

23、ing track or prefabricated assemblies. D. Nonmetallic, Non-shrink Grout: Premixed, nonmetallic, noncorrosive, nonstaining grout containing selected silica sands, Portland cement, shrinkage-compensating agents, plasticizing and water-reducing agents, complying with ASTM C1107, with fluid consistency

24、and a 30 minute working time. 2.2 WALL FRAMING: SPEC WRITER NOTE: Retain this article when steel studs are required. Select the steel thickness as required. Sequence corresponds to 20 gage, 18 gage, 16 gage, 14 gage, and 12 gage thicknesses. A. Steel Studs: Manufacturers standard C-shaped steel stud

25、s of web depth indicated, with lipped flanges, and complying with the following: 1. Design Uncoated-Steel Thickness: /0.91 mm (0.0358 inch)/ /1.20 mm (0.0474 inch)/ /1.52 mm (0.0598 inch)/ /(0.0747 inch)/ /2.66 mm (0.1046 inch)/ SPEC WRITER NOTE: Flange widths vary with application. When sheathing a

26、nd/or masonry ties are required, use a minimum flange width of 41 mm (1 5/8 inches). 2. Flange Width: /35 mm (1-3/8 inches)/ /(1-5/8 inches)/ /(2 inches)/ /(2-1/2 inches)/ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 6 SPEC WRITER

27、 NOTE: Select appropriate choice below. Stud webs are punched to manufacturers standard punch-out shape, size and spacing. 3. Web: Punched / Unpunched /. B. Steel Track: Manufacturers standard U-shaped steel track, unpunched, of web depths indicated, with straight flanges, and complying with the fol

28、lowing: 1. Design Uncoated-Steel Thickness: Matching steel studs. 2. Flange Width: Manufacturers standard deep flange where indicated, standard flange elsewhere. 2.3 JOIST FRAMING: SPEC WRITER NOTE: Retain this article when steel joists are required. Select the steel thickness as required. Sequence

29、corresponds to 20 gage, 18 gage, 16 gage, 14 gage, and 12 gage thicknesses. A. Steel Joists: Manufacturers standard C-shaped steel joists, unpunched, of web depths indicated, with lipped flanges, and complying with the following: 1. Design Uncoated-Steel Thickness: / 0.91 mm (0.0358 inch). / / 1.20

30、mm (0.0474 inch). / / 1.52 mm (0.0598 inch). / / 1.90 mm 0.0747 inch). / / 2.66 mm (0.1046 inch)./ SPEC WRITER NOTE: Select required flange width from subparagraphs below. Flange width may vary with application. 2. Flange Width: / 41 mm (1 5/8 inches) minimum. / / (2 inches). / 63 mm (2 1/2 inches)

31、/ B. Steel Joist Track: Manufacturers standard U-shaped steel joist track, unpunched, of web depths indicated, with straight flanges, and complying with the following: 1. Design Uncoated-Steel Thickness: Matching steel joists. SPEC WRITER NOTE: Select required flange width from subparagraphs below.

32、Flange width may vary with application. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 7 2. Flange Width: / 41 mm (1 5/8-inches) minimum. / 51 mm (2 inches). / 63 mm (2 1/2-inches). / 2.4 FRAMING ACCESSORIES: SPEC WRITER NOTE: Revis

33、e minimum yield strength of accessories as required. A. Fabricate steel framing accessories of the same material and finish used for framing members, with a minimum yield strength of 230 MPa (33 ksi). B. Provide accessories of manufacturers standard thickness and configuration, unless otherwise indi

34、cated, as follows: SPEC WRITER NOTE: Revise list below to suit project. 1. Supplementary framing. 2. Bracing, bridging, and solid blocking. 3. Web stiffeners. 4. Gusset plates. 5. Deflection track and vertical slide clips. 6. Stud kickers and girts. 7. Joist hangers and end closures. 8. Reinforcemen

35、t plates. 2.5 ANCHORS, CLIPS, AND FASTENERS: A. Steel Shapes and Clips: ASTM A36, zinc coated by the hot-dip process according to ASTM A123. B. Cast-in-Place Anchor Bolts and Studs: ASTM A307, Grade A, zinc coated by the hot-dip process according to ASTM A153. C. Expansion Anchors: Fabricated from c

36、orrosion-resistant materials, with capability to sustain, without failure, a load equal to 5 times the design load, as determined by testing per ASTM E488 conducted by a qualified independent testing agency. D. Power-Actuated Anchors: Fastener system of type suitable for application indicated, fabri

37、cated from corrosion-resistant materials, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 8 with capability to sustain, without failure, a load equal to 10 times the design load, as determined by testing per ASTM E1190 conducted by a

38、 qualified independent testing agency. E. Mechanical Fasteners: Corrosion-resistant coated, self-drilling, self-threading steel drill screws. Low-profile head beneath sheathing, manufacturers standard elsewhere. 2.6 REQUIREMENTS: A. Welding in accordance with AWS D1.3 B. Furnish members and accessor

39、ies by one manufacturer only. PART 3 - EXECUTION 3.1 FABRICATION: A. Framing components may be preassembled into panels. Panels shall be square with components attached. B. Cut framing components squarely or as required for attachment. Cut framing members by sawing or shearing; do not torch cut. C.

40、Hold members in place until fastened. D. Fasten cold-formed metal framing members by welding or screw fastening, as standard with fabricator. Wire tying of framing members is not permitted. 1. Comply with AWS requirements and procedures for welding, appearance and quality of welds, and methods used

41、in correcting welding work. 2. Locate mechanical fasteners and install according to cold-formed metal framing manufacturers instructions with screw penetrating joined members by not less than 3 exposed screw threads. E. Where required, provide specified insulation in double header members and double

42、 jamb studs which will not be accessible after erection. 3.2 ERECTION: A. Handle and lift prefabricated panels in a manner as to not distort any member. B. Securely anchor tracks to supports as shown. C. At butt joints, securely anchor two pieces of track to same supporting member or butt-weld or sp

43、lice together. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 9 D. Plumb, align, and securely attach studs to flanges or webs of both upper and lower tracks. E. All axially loaded members shall be aligned vertically to allow for ful

44、l transfer of the loads down to the foundation. Vertical alignment shall be maintained at floor/wall intersections. F. Install jack studs above and below openings and as required to furnish support. Securely attach jack studs to supporting members. G. Install headers in all openings that are larger

45、than the stud spacing in that wall. H. Attach bridging for studs in a manner to prevent stud rotation. Space bridging rows as shown. I. Studs in one piece for their entire length, splices will not be permitted. J. Provide a load distribution member at top track where joist is not located directly ov

46、er bearing stud. K. Provide joist bridging and web stiffeners at reaction points where shown. L. Provide end blocking where joist ends are not restrained from rotation. M. Provide an additional joist under parallel partitions, unless otherwise shown, when partition length exceeds one-half joist span

47、 and when floor and roof openings interrupt one or more spanning members. N. Provide temporary bracing and leave in place until framing is permanently stabilized. O. Do not bridge building expansion joints with cold-formed metal framing. Independently frame both sides of joints. P. Fasten reinforcem

48、ent plate over web penetrations that exceed size of manufacturers standard punched openings. 3.3 TOLERANCES: A. Vertical alignment (plumbness) of studs shall be within 1/960th of the span. B. Horizontal alignment (levelness) of walls shall be within 1/960th of their respective lengths. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-07-11 05 40 00 - 10 C. Spacing of studs shall not be more than 3 mm (1/8 inch) +/- from the designed spacing providing that the cumulative error does not exceed the r