1、Designation: C 754 08Standard Specification forInstallation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products1This standard is issued under the fixed designation C 754; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specificat
3、ion covers the minimum requirements forthe installation of interior nonstructural steel framing andfurring members designed to receive screw-attached gypsumpanel products. The steel framing and furring members cov-ered in this specification are limited to those complying withSpecification C 645.1.2
4、Details of construction for a specific assembly toachieve the required fire resistance shall be obtained fromreports of fire-resistance tests, engineering evaluations, orlistings from recognized fire testing laboratories.1.3 The values stated in inch-pound units are to be regardedas standard. The va
5、lues given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A 641/A 641M Specification for ZincCoated (Galvanized)Carbon Steel WireA 653/A 653M Specification for Steel Sheet, Zinc-C
6、oated(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)by the Hot-Dip ProcessA 1008/A 1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability, So-lution Hardened, and Bake HardenableC11 Terminology Relating t
7、o Gypsum and Related Build-ing Materials and SystemsC 645 Specification for Nonstructural Steel Framing Mem-bersC 840 Specification for Application and Finishing of Gyp-sum Board2.2 ICC-ES Document3ICC-ES-AC86 Acceptance Criteria for Steel Studs andGypsum-Board Interior Nonload-Bearing WallsComplete
8、 ConstructionAC86Approved July 1995(Editorially revised September 2005) (Formerly ICBOAC86 dated July 1995)3. Terminology3.1 DefinitionsTerms shall be as defined in TerminologyC11.3.2 Descriptions of Terms Specific to This Standard:3.2.1 channel, nthe material described in 4.3 to whichfurring member
9、s are attached.3.2.2 cross furring, nfurring member attached perpen-dicular to main runners or framing members.3.2.3 cross furring member, na member installed perpen-dicularly to the main beams designed to receive screw attachedgypsum panel products.3.2.4 direct furring, nfurring members attached di
10、rectlyto the structural members of the building.3.2.5 framing member, nmetal studs, runners (track), andrigid furring channels designed to receive screw attachedgypsum panel products.3.2.6 furred ceiling, na ceiling in which the rigid furringchannels and studs are attached directly to the structural
11、members of the building.3.2.7 furring, vpreparing a wall or ceiling with framing orfurring members to provide a level surface or airspace.3.2.8 furring member, nmetal studs, rigid furring chan-nels, or channels used either as direct furring or as crossfurring.3.2.9 grid suspension system, na ceiling
12、 system com-posed of modular interlocking steel components designed toreceive screw-attached gypsum panel products.3.2.10 main beam, nthe main support member of a gridsuspension system that receives cross furring members.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum an
13、d Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.03 on Specifications for theApplication of Gypsum and OtherProducts in Assemblies.Current edition approved Nov. 1, 2008. Published December 2008. Originallyapproved in 1974. Last previous edition approved in
14、 2007 as C 754 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from ICC Evaluation Services, In
15、c., 5360 Workman Mill Road,Whittier, CA 90601, www.icc-es.org.1*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.3.2.11 main runner, nthe channel or stud that is attached
16、to or suspended from the structural members of the building.3.2.12 runner (track), na member designed to receive theends of metal studs, attached directly to the structural membersof the building.3.2.13 suspended ceiling, na ceiling in which the mainrunners and cross furring are suspended below the
17、structuralmembers of the building.4. Materials and Manufacture4.1 Studs, Runners, Rigid Furring Channels, and GridSuspension Systemssee Specification C 645.4.2 Tie Wire and Hanger WireZinc-coated (galvanized)soft-annealed steel, or of a material and size having equivalentcorrosion resistance and str
18、ength. Wire diameters (uncoated)specified herein correspond with United States steel wire gaugenumbers as follows:DiameterAWire Gauge(U.S. Steel Wire Gauge)in. mm0.0348 0.88 No. 200.0410 1.04 No. 190.0475 1.21 No. 180.0540 1.37 No. 170.0625 1.59 No. 160.0800 2.03 No. 140.0915 2.32 No. 130.1055 2.68
19、No. 120.1205 3.06 No. 110.1350 3.43 No. 100.1483 3.77 No. 90.1620 4.12 No. 8AAllowable variations in diameter shall be in accordance with tolerances asestablished in Specification A 641/A 641M.4.3 ChannelsChannels shall be cold-formed from steelwith a minimum 33 000 psi (228 MPa) yield strength and0
20、.0538 in. (1.37 mm) minimum bare steel thickness. Channelsshall have a protective coating conforming to SpecificationA 653/A 653MG 40 or shall have a protective coating with anequivalent corrosion resistance, and shall have the followingminimum weights in lb per 1000 linear ft (kg/m):Size Weight Fla
21、nge Widthin. (mm) lb/1000 ft (kg/m) in. (mm)34 (19) 277 (0.412)12 (13)112 (38) 414 (0.616)12 (13)2 (51) 506 (0.753)12 (13)212 (64) 597 (0.888)12 (13)4.4 Grid Suspension System:4.4.1 Main BeamFormed from cold-rolled steel “T” sec-tions, indexed with slots to receive ends of cross furringmembers, and
22、with stamped couplings at each end for thepurpose of splicing.4.4.2 Cross Furring MembersFormed from cold-rolledsteel, designed to permit screw attachment of gypsum panelproducts, and formed with an end configuration that permitsmechanical interlock with the indexed slots of the main beam.4.5 Rod an
23、d Flat HangersFormed from steel conformingto SpecificationA 1008/A 1008M. When specified, rod and flathangers shall be protected with zinc coating or another equallyrust-inhibiting coating.5. Installation of Metal Framing5.1 Tolerances:5.1.1 Spacing of studs and furring members shall be notmore than
24、 618 in. (3 mm) from the spacing shown in Tables 1and 2. Any cumulative error shall be not more than 618 in.5.2 Runner (Track) Installation:5.2.1 GeneralRunners shall be aligned accurately at thefloor and ceiling and securely anchored approximately 2 in. (50mm) from the runner ends, not more than 24
25、 in. (610 mm) oncenter. Runners shall be secured with fasteners at partitioncorners. One runner shall extend to the end of the corner andthe other runner shall butt to it and be gapped to allowclearance for the gypsum panel product thickness. Runnersshall not be mitered.5.2.2 Runners to Concrete Sla
26、bsShall be fastened withconcrete stub nails, expansion anchors, shielded screws, orpower-driven fasteners not exceeding 24 in. (610 mm) oncenter.5.2.3 Runners to WoodShall be fastened with screwsproviding not less than 1 in. (25 mm) penetration or nailsproviding 112 in. (38 mm) penetration into the
27、wood.5.2.4 Runners to Suspended CeilingsShall be fastenedwith “Molly”-type expandable fasteners, toggle bolts, clamps,or screws into channels, splines, “T” runners, or other mem-bers.5.3 Stud Installation:5.3.1 Stud Height and Spacing Limitations:5.3.1.1 Maximum framing spacing determined by gypsump
28、anel product thickness shall be in accordance with Table 1.5.3.1.2 Stud heights shall be not greater than those shown inTables 3-5.5.3.1.3 Studs shall engage both the floor and ceiling run-ners. The gap between the end of a stud and the web of the topand bottom runner shall be not more than14 in. (6
29、 mm).5.3.1.4 Where conditions require that a partition be con-structed with compensation for vertical structural movement,the gap between the end of a stud and the adjacent runner shallbe designed by an architect or engineer.5.3.2 Location:5.3.2.1 Studs shall be positioned vertically and shall bespa
30、ced not more than the maximum framing spacing allowedfor the finish specified. Studs located adjacent to door andwindow frames, partition intersections, and corners shall beanchored to runner flanges by screws, or by crimping at eachstud and runner flange.5.3.2.2 At the junction of through and abutt
31、ing partitions, astud shall be located not more than 2 in. (50 mm) away fromthe intersection in the abutting partition from the throughpartition (see Fig. 1), and not more than 2 in. (50 mm) frompartition corners and other construction.Astud shall be locatedadjacent to all door and borrowed light fr
32、ames. Studs shall besecurely anchored to the jamb anchor clips on each door frameor borrowed light frame by bolt or screw attachment. A headershall be formed over metal door and borrowed light frameswith a cut-to-length section of runner placed horizontally withthe flanges cut and web bent verticall
33、y at each end, andsecurely attached to the adjacent vertical studs. A cut-to-lengthstud shall be positioned at the location of vertical joints overthe header extending to the ceiling runner. Additional cut tolength studs required to comply with framing spacing inC754082accordance with Table 1 shall
34、also be added over the header,extending to the ceiling runner.5.3.2.3 At partition corners, a stud shall be installed so thatit forms the outside corner. Following application of a singlelayer of gypsum panel product to this stud, a second stud shallbe installed in the abutting runner and the web sh
35、all be screwattached through the gypsum panel product into the flange ofthe first stud (see Fig. 2).Athree-stud conventional corner shallbe permitted (see Fig. 3).5.4 Chase Wall Partitions:5.4.1 A double row of runners and studs as specified in 5.2and 5.3 shall be installed. Height shall be in accor
36、dance with5.3.1.2.5.4.2 Where a gypsum panel product is used as bracingbetween chase walls, a gap of not more than 20 in. (508 mm)between rows of studs shall be permitted.5.4.3 Horizontal cross braces to opposite studs shall beinstalled not more than 4 ft (1220 mm) on center vertically.Horizontal cr
37、oss braces shall be either of the following:5.4.3.1 Gypsum panel product gussets 12 in. (305 mm) deepattached to the stud webs with three screws.5.4.3.2 A stud or runner with the web screw attached to thewall stud web with not less than two screws.5.5 Rigid Furring Channel Installation, Direct Attac
38、hmentto Masonry or ConcreteThe furring member shall be at-tached to masonry or concrete surfaces, either vertically orhorizontally. Spacing shall be determined by gypsum panelproduct thickness in accordance with Table 1. For furringpositioned horizontally, the center line of the furring membersclose
39、st to the floor and ceiling shall be attached not more than3 in. (76 mm) from the floor and ceiling lines. The furringmember shall be secured with fasteners occurring on alternatedflanges and spaced 24 in. (610 mm) on center.5.6 Wall Furring-Bracket System:5.6.1 Adjustable wall furring brackets with
40、 serrated edgesfacing upward shall be attached to masonry or concrete wallsin the following spacing pattern: 48 in. (1220 mm) on centerTABLE 1 Maximum Framing SpacingNOTE 1Where a conflict exists in spacing between base and face layers, the closer spacing shall govern.Gypsum Panel Product ThicknessL
41、ocation ApplicationMaximum Spacing, ocBase Layer,in. (mm)Face Layer,in. (mm)One Layer Only,in. (mm)Two LayersFasteners Only,in. (mm)Adhesive BetweenLayers, in. (mm)38 (9.5) . . . ceilings perpendicular 16 (406)A16 (406)A16 (406)A38 (9.5) ceilings perpendicular NA 16 (406) 16 (406)38 (9.5) ceilings p
42、arallel NA NR 16 (406)12 (12.7) . . . ceilings perpendicular 24 (610)A24 (610)A24 (610)A. . . ceilings parallel 16 (406)A16 (406)A16 (406)A38 (9.5) ceilings perpendicular NA 16 (406) 24 (610)38 (9.5) ceilings parallel NA NR 24 (610)12 (12.7) ceilings perpendicular NA 24 (610) 24 (610)12 (12.7) ceili
43、ngs parallel NA 16 (406) 24 (610)58 (15.9) . . . ceilings perpendicular 24 (610)A24 (610)A24 (610)A. . . ceilings parallel 16 (406)A16 (406)A16 (406)A38 (9.5) ceilings perpendicular NA 16 (406) 24 (406)38 (9.5) ceilings parallel NA NR 24 (610)12 or58 (12.7 or 15.9) ceilings perpendicular NA 24 (610)
44、 24 (610)12 or58 (12.7 or 15.9) ceilings parallel NA 16 (406) 24 (406)14 (6.4) . . . walls parallel NR 16 (406)A16 (406)A38 (9.5) walls NR NR NR NR12 or58 (12.7 or 15.9) walls perpendicular or parallel NA 16 (406) 16 (406)38 (9.5) . . . walls perpendicular or parallel 16 (406)A16 (406)A24 (610)A38 o
45、r12 or58 (9.5 or12.7 or 15.9)walls perpendicular or parallel NA 16 (406) 24 (610)12 or58 (12.7 or15.9). . . walls perpendicular or parallel 24 (610)A24 (610)A24 (610)A38 or12 or58 (9.5 or12.7 or 15.9)walls perpendicular or parallel NA 24 (610) 24 (610)Perpendicularperpendicular to framing membersPar
46、allelparallel to framing membersNAnot applicableNRnot recommendedocon centerADenotes framing spacing for base layer in two-layer application.TABLE 2 Spans and Spacings of Horizontal Furring MembersType of FurringMaximumASpacingctoc,Bin. (mm)Maximum Span,ft (mm)Rigid Furring Channel 24 (610) 4 (1220)
47、158 in. (41 mm) stud(erected withopen side up and againstsupport)24 (610) 5 (1520)212 in. (64 mm) stud(erected withweb vertical to support)C24 (610) 6 (1830)358 in. (92 mm) stud(erected withweb vertical to support)C24 (610) 8 (2440)AConsult Table 1 for maximum spacing as determined by gypsum panel p
48、roductthickness.Bc to ccenter to centerCA 6 in. (150 mm) length of same size stud or track shall be nested to form a“box” at each saddle tie.C754083vertically, 6 in. (152 mm) maximum from floor and ceiling, 36in. (910 mm) on center horizontally, 4 in. (100 mm) maximumfrom columns or other abutting c
49、onstruction, and as requiredabove and below windows. Each bracket shall be fastenedthrough the hole nearest to the serrated edges.5.6.2 Channels34 in. (19 mm) shall be laid horizontally onthe furring brackets so that the channel flanges engage theserrated edges of the bracket. Each channel shall be plumbed toalign with ceiling and base channels. Channels shall bewire-tied to each bracket with a double strand of 16 gauge ora triple strand of 18-gauge tie wire. Each excess bracket lengthshall be bent down
