1、Designation:C95511b Designation: C955 11cStandard Specification forLoad-Bearing (Transverse and Axial) Steel Studs, Runners(Tracks), and Bracing or Bridging for Screw Application ofGypsum Panel Products and Metal Plaster Bases1This standard is issued under the fixed designation C955; the number imme
2、diately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1This
3、1.1 This specification covers steel studs, runners (tracks), and bracing or bridging (with a base steel minimum thicknessof not less than 0.0329 in. (0.836 mm) for screw application of gypsum panel products and metal plaster bases in load-bearing(transverse and axial) construction assemblies. Steel
4、of lesser thickness shall be permitted in additional engineered products.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 The fo
5、llowing precautionary caveat pertains only to the test method portion, Section 8, of this specification: This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and heal
6、th practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A653/A653M Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by theHot-Dip ProcessA792/A792M Specification for Steel Sheet, 55
7、 % Aluminum-Zinc Alloy-Coated by the Hot-Dip ProcessA875/A875M Specification for Steel Sheet, Zinc-5 % Aluminum Alloy-Coated by the Hot-Dip ProcessA1003/A1003M Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing MembersC11 Terminology Relating to Gypsum an
8、d Related Building Materials and SystemsC954 Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studsfrom 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness2.2 AISI Standard:3S100 North American Specification for the Design of Cold-
9、Formed Steel Structural MembersS200 North American Standard for Cold-Formed Steel Framing General Provisions 2007 Edition3. Terminology3.1 Definitions: Definitions shall be in accordance with Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 members, nstuds, runners, tracks, b
10、racing, bridging, accessories or other items manufactured in accordance with thisstandard.3.2.2 structural member, na member in a steel framed system in which the loading exceeds any of the following conditions:a transverse load of 20 lbf/ft (290 N/m) of member length, or an axial load, exclusive of
11、 sheathing, of 200 lbf (890 N) per member.4. Materials and Manufacture4.1 Members shall be manufactured from steel meeting the requirements of Specification A1003/A1003M.4.2 The minimum steel thickness (base steel) shall be not less than 0.0329 in. (0.84 mm).1This specification is under the jurisdic
12、tion of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility ofSubcommittee C11.02 on Specifications and Test Methods for Accessories and Related Products.Current edition approved Oct.Dec. 1, 2011. Published October 2011.January 2012. Originally ap
13、proved in 1981. Last previous edition approved in 2011asC95511a.C95511b. DOI: 10.1520/C0955-11BC.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Docu
14、ment Summary page on the ASTM website.3Available from American Iron and Steel Institute (AISI), 1140 Connecticut Ave., NW, Suite 705, Washington, DC 20036, http:/www.steel.org.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what ch
15、anges have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the off
16、icial document.*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.3 Individual measurements before the application of protective coating shall be not less than 95 % of t
17、he specified designthickness.4.4 Members shall have a protective coating in accordance with Table 1, CP 60 minimum.4.5 Edges of members shall be manufactured to minimize burrs and sharp edges.4.6 Factory punch-outs, when provided, shall be located along the centerline of the webs of members and shal
18、l havecenter-to-center spacing of not less than 24 in. (610 mm). Web punch-outs maximum width shall be the lesser of 0.5 times themember depth, d, or 212 in. (64 mm). Web punch-out length shall not exceed 412 in. (114 mm). Minimum distance between theend of the member and the near edge of the web pu
19、nch-out shall be 10 in. (254 mm). The size of the factory punch-outs shall notexceed the size used in design and the center-to-center spacing shall not be less than that used in design.4.7 The properties and strength of members shall be computed in accordance with the AISI S100.5. Performance Requir
20、ements5.1 When tested in accordance with Section 8, members shall be capable of pulling the head of the screw below the surface ofthe gypsum panel product without spin out (see Fig. 1).6. Dimensions and Permissible Variations6.1 Data for calculating design performance shall be supplied by the manufa
21、cturer.6.2 The width of the surface to which the sheathing board is attached shall be not less than 114 in. (32 mm).6.3 Runners (track) shall be formed in a U-shaped configuration, having a depth compatible with that of the studs of the samenominal size.6.4Minimum6.4 Minimum height of runner (track)
22、 flanges shall be 114 in. (32 mm).6.5 Members shall be manufactured within the limits as shown in Table 2 and Fig. 2.6.6 Bracing and bridging shall have configuration and steel thickness to provide secondary support for the studs in accordancewith the AISI S100.7. Workmanship, Finish, and Appearance
23、7.1 The steel members shall be free of defects that interfere with the purpose for which they are intended.8. Penetration Test8.1 Significance and UseThis test method provides a procedure for evaluating the members ability to pull the head of a screwbelow the surface of the gypsum panel product. It
24、shall be used to determine compliance with this specification. The degree ofperformance of this test method with service performance has not been determined.8.2 Apparatus shall satisfy the following:8.2.1 Electric Drill capable of 2500 r/min (free spindle speed), supplied with a screw driving bit to
25、 fit the screw used in thetest.8.3 Materials shall satisfy the following:8.3.1 Gypsum Board, Type X,58 in. (16 mm) thick.8.3.2 ScrewsSpecification C954, 1 in. (25.4 mm) long.8.3.3 Kraft Paper, 0.010 in. (0.25 mm) thick.8.4 SamplingOne member shall be selected from each bundle or package but not more
26、 than ten from any one shipment fortesting.8.5 Specimen Preparation:8.5.1 Each member to be tested shall be cut into test specimens not less than 18 in. (460 mm) long.8.5.2 For each test, one piece of gypsum board, 6-in. (152-mm) square, shall be cut not less than 12 in. (305 mm) from the edgeor end
27、 of the wallboard.TABLE 1 Coating DesignationsCoatingClassificationCoatingDesignatorMinimum Coating RequirementsZinc-CoatedAZinc IronB55 % Al-ZincCZinc-5 %Doz/ft2(g/m2) oz/ft2(g/m2) oz/ft2(g/m2) oz/ft2(g/m2)Metallic Coated CP 60 G60 (Z 180) A60 (ZF 180) AZ 50 (AZM 150) GF 30 (ZGF 90)CP 90 G90 (Z 275
28、) Not Applicable AZ 50 (AZM 150) GF 45 (ZGF 135)Painted Metallic PM The metallic coated substrate shall meet the requirements of metallic coated. In addition, the paint film shallhave a minimum thickness of 0.5 mil (0.013 mm) per side (primer plus topcoat) with a minimum primerthickness of 0.1 mil (
29、0.0002 mm) per side.EAZinc-coated steel sheet as described in Specification A653/A653M.BZinc-iron alloy-coated steel sheet as described in Specification A653/A653M.C55 % Aluminum-zinc alloy-coated steel sheet as described in Specification A792/A792M.DZinc-5 % aluminum alloy-coated steel sheet as des
30、cribed in Specification A875/A875M.EIn accordance with the requirements of Specification A1003/A1003M.C955 11c2FIG. 1 StudsTABLE 2 Manufacturing TolerancesDimensionAItem Checked Structural Studs, in. (mm) Structural Track, in. (mm)A length +332 (2.38) +12 (12.7)332 (2.38)14 (6A length +18 (3.18)332
31、(2.38)+12 (12.7)332 (2.38)14 (6BBweb width +132 (0.79)+132 (0.79)BBweb width +132 (0.79)132 (0.79)132 (0.79)+18 (3.2)+132 (0.79)+18 (3.18)C flare +116 (1.59) + 0 (0)overbend 116 (1.59) 332 (2.38)D hole center +116 (1.59) NAD hole center +116 (1.59) n/awidth 116 (1.59)E hole center +12 (6.35) NAE hol
32、e center +12 (12.7) n/alength 12 (6.35)along length 12 (12.7)F crown +116 (1.59)+116 (1.59)F crown +116 (1.59)116 (1.59)116 (1.59)116 (1.59)+116 (1.59)116 (1.59)GCcamber18 (3.2) max per 10 ft132 per ft (0.79)12 max (12.7)HCbow18 (3.2) max per 10 ft132 per ft (0.79)12 max (12.7)I twist132 per ft (0.7
33、9)132 per ft (0.79)12 max (12.7)12 max (12.7)J flange width +18 (3.18)116 (1.59)+14 (6.35)116 (1.59)K stiffening lip length +18 (3.18)132 (0.79)n/aAAll measurements shall be taken not less than 1 ft (305 mm) from the end.BOutside dimension for stud; inside for track.C 18 in. (3 mm) max per 10 ft (30
34、00 mm) represents L/960 maximum for overall camber and bow. Thus a 20 ft (6000 mm) long member would have14 in.(6mm)permissible maximum; a 5 ft (1500 mm) long member would have116 in. (1.5 mm) permissible maximum.C955 11c38.5.3 For each test, four pieces of kraft paper, 2-in. (51-mm) square shall be
35、 cut.8.6 Number of Tests and Retests:8.6.1 Five specimens of members shall be tested.8.6.2 If more than one test specimen fails to meet the requirements, two more test specimens shall be chosen for retesting.8.7 ReportReport shall indicate all specimens meeting the requirements of this specification
36、 if the screw penetrated the steeland the screw did not spin out; or shall indicate all specimens failing if the screw did not penetrate the steel, or the screw spunout.8.8 Precision and BiasNo statement is made about either the precision or bias of this test method since the result merely stateswhe
37、ther or not there is conformance to the criteria for success specified in the procedure.9. Inspection9.1 Inspection of the members shall be agreed upon between the purchaser and the producer or supplier as part of the purchaseagreement.10. Rejection10.1 When specified in the purchase agreement, memb
38、ers that fail to conform to the requirements of this specification shall berejected. Rejection shall be reported to the producer or supplier promptly and in writing. The notice of rejection shall contain astatement documenting how the member has failed to conform to the requirements of this specific
39、ation and the purchase agreement.11. Certification11.1 When specified in the purchase agreement, a producers or suppliers report shall be furnished at the time of shipmentcertifying that the product is in compliance with this specification.12. Marking and Identification12.1 See AISI S200, Section A5
40、 - Product Identification.13. Protection13.1 Material shall be protected during shipment as required. When specified in the purchase order, the members shall bepackaged in accordance with the purchasers instructions.FIG. 2 Manufacturing TolerancesC955 11c413.2When13.2 When materials are stored outsi
41、de, they shall be stacked off the ground and be properly supported on a levelsurface.14. Keywords14.1 runners; screws; section properties; studs; thicknessSUMMARY OF CHANGESCommittee C11 has identified the location of selected changes to this specification since the last issue,C95511a,C95511b, that
42、may impact the use of this specification. (Approved Oct.Dec. 1, 2011)(1) Deleted Sections 12.1 through 12.3 and Table 3, and added new Section 12.1.(2) Revised Section 2.Committee C11 has identified the location of selected changes to this specification since the last issue,C95511, that may impact t
43、he use of this specification. (Approved Aug. 1, 2011)(1) Replaced text in 13.2.(2) Deleted AISI COSP from 2.2.Committee C11 has identified the location of selected changes to this specification since the last issue,C95510, that may impact the use of this specification. (Approved May 15, 2011)(1) Rev
44、ised 1.1.Committee C11 has identified the location of selected changes to this specification since the last issue,C95509a, that may impact the use of this specification. (Approved December 1, 2010)(1) Revised 6.4.Committee C11 has identified the location of selected changes to this specification sin
45、ce the last issue,C95509, that may impact the use of this specification. (Approved September 1, 2009)(1) Added metric equivalents to Table 1 for Painted Metallic Minimum Coating Requirements.(2) Added metric equivalents to Footnote C of ) Revised Table 2 and Fig. 2.ASTM International takes no positi
46、on respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility
47、.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM
48、International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address sh
49、own below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.
