ASTM C754-00

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Designation: C 754 – 00
Standard Specification for
Installation of Steel Framing Members to Receive Screw-
Attached Gypsum Panel Products
This standard is issued under the fixed designation C 754; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) 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* 3. Terminology
1.1 This specification covers the minimum requirements for 3.1 Definitions—Terms shall be as defined in Terminology
the installation of interior nonstructural steel framing and C11.
furring members designed to receive screw-attached gypsum 3.2 Descriptions of Terms Specific to This Standard:
panel products. The steel framing and furring members cov- 3.2.1 channel, n—the material described in 4.3 to which
ered in this specification are limited to those complying with furring members are attached.
Specification C 645. 3.2.2 cross furring, n—furring member attached perpen-
1.2 Details of construction for a specific assembly to dicular to main runners or framing members.
achieve the required fire resistance shall be obtained from 3.2.3 cross furring member, n—a member installed perpen-
reports of fire-resistance tests, engineering evaluations, or dicularly to the main beams designed to receive screw attached
listings from recognized fire testing laboratories. gypsum panel products.
1.3 The values stated in inch-pound units are to be regarded 3.2.4 direct furring, n—furring members attached directly
as the standard. The SI (metric) values given in parentheses are to the structural members of the building.
approximate and are provided for information purposes only. 3.2.5 framing member, n—metal studs, runners (track), and
rigid furring channels designed to receive screw attached
2. Referenced Documents
gypsum panel products.
2.1 ASTM Standards:
3.2.6 furred ceiling, n—a ceiling in which the rigid furring
A 366/A 366M Specification for Commercial Steel (CS), channels and studs are attached directly to the structural
Sheet, Carbon, (0.15 Maximum Percent) Cold-Rolled members of the building.
A 641/A 641M Specification for Zinc-Coated (Galvanized)
3.2.7 furring, v—preparing a wall or ceiling with framing or
Carbon Steel Wire furring members to provide a level surface or airspace.
A 653/A 653M Specification for Steel Sheet, Zinc-Coated
3.2.8 furring member, n—metal studs, rigid furring chan-
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) nels, or channels used either as direct furring or as cross
by the Hot-Dip Process
furring.
C 11 Terminology Relating to Gypsum and Related Build- 3.2.9 grid suspension system, n—a ceiling system com-
ing Materials and Systems
posed of modular interlocking steel components designed to
C 645 Specification for Non-Load Bearing (Axial) Steel receive screw-attached gypsum panel products.
Studs, Runners, (Tracks), and Rigid Furring Channels for
3.2.10 main beam, n—the main support member of a grid
Screw Application of Gypsum Board suspension system that receives cross furring members.
3.2.11 main runner, n—the channel or stud that is attached
to or suspended from the structural members of the building.
This specification is under the jurisdiction of ASTM Committee C11 on
3.2.12 runner (track), n—a member designed to receive the
Gypsum and Related Building Materials and Systems and is the direct responsibility
ends of metal studs, attached directly to the structural members
of Subcommittee C11.03 on Specifications for Application of Gypsum and Other
Products in Assemblies. of the building.
Current edition approved Nov. 10, 2000. Published January 2001. Originally
3.2.13 suspended ceiling, n—a ceiling in which the main
published as C 754 – 74. Last previous edition C 754 – 99a.
runners and cross furring are suspended below the structural
Annual Book of ASTM Standards, Vol 01.03.
members of the building.
Annual Book of ASTM Standards, Vol 01.06.
Annual Book of ASTM Standards, Vol 04.01.
*A Summary of Changes section appears at the end of this standard.
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C754–00
4. Materials and Manufacture equivalent corrosion resistance, and shall have the following
minimum weights in lb per 1000 linear ft (kg/m):
4.1 Studs, Runners, Rigid Furring Channels, and Grid
Size, Weight Flange Width
Suspension Systems—see Specification C 645.
in. (mm) lb/1000 ft (kg/m) in. (mm)
4.2 Tie Wire and Hanger Wire—Zinc-coated (galvanized)
3 1
⁄4 (19) 277 (0.412) ⁄2 (13)
1 1
1 ⁄2 (38) 414 (0.616) ⁄2 (13)
soft-annealed steel, or of a material and size having equivalent
2 (51) 506 (0.753) ⁄2 (13)
corrosion resistance and strength. Wire diameters (uncoated)
1 1
2 ⁄2 (64) 597 (0.888) ⁄2 (13)
specified herein correspond with United States steel wire gage
4.4 Grid Suspension System:
numbers as follows:
4.4.1 Main Beam—Formed from cold-rolled steel “T” sec-
A
Diameter, Wire Gage
in. mm (U.S. Steel Wire Gage) tions, indexed with slots to receive ends of cross furring
0.0348 0.88 No. 20
members, and with stamped couplings at each end for the
0.0410 1.04 No. 19
purpose of splicing.
0.0475 1.21 No. 18
0.0540 1.37 No. 17 4.4.2 Cross Furring Members—Formed from cold-rolled
0.0625 1.59 No. 16
steel, designed to permit screw attachment of gypsum panel
0.0800 2.03 No. 14
products, and formed with an end configuration that permits
0.0915 2.32 No. 13
0.1055 2.68 No. 12 mechanical interlock with the indexed slots of the main beam.
0.1205 3.06 No. 11
4.5 Rod and Flat Hangers—Formed from steel conforming
0.1350 3.43 No. 10
to Specification A 366/A 366M. When specified, rod and flat
0.1483 3.77 No. 9
0.1620 4.12 No. 8 hangers shall be protected with zinc coating or another equally
A
rust-inhibiting coating.
Allowable variations in diameter shall be in accordance with tolerances as
established in A 641/A 641M.
5. Installation of Metal Framing
4.3 Channels—Channels shall be cold-formed from steel
with a minimum 33 000 psi (228 MPa) yield strength and 5.1 Tolerances:
0.0538 in. (1.37 mm) minimum bare steel thickness. Channels 5.1.1 Spacing of studs and furring members shall be not
shall have a protective coating conforming to Specification more than 6 ⁄8 in. (3 mm) from the spacing shown in Tables 1
A 653/A 653–G 40 or shall have a protective coating with an and 2. Any cumulative error shall be not more than 6 ⁄8 in.
TABLE 1 Maximum Framing Spacing
NOTE 1—Where a conflict exists in spacing between base and face layers, the closer spacing shall govern.
Gypsum Panel Product Thickness Maximum Spacing, oc
Two Layers
Location Application
Base Layer, Face Layer, One Layer Only,
Fasteners Only, Adhesive Between
in. (mm) in. (mm) in. (mm)
in. (mm) Layers, in. (mm)
A A A
⁄8 (9.5) . . . ceilings perpendicular 16 (406) 16 (406) 16 (406)
⁄8 (9.5) ceilings perpendicular NA 16 (406) 16 (406)
⁄8 (9.5) ceilings parallel NA NR 16 (406)
A A A
⁄2 (12.7) . . . ceilings perpendicular 24 (610) 24 (610) 24 (610)
A A A
. . . ceilings parallel 16 (406) 16 (406) 16 (406)
⁄8 (9.5) ceilings perpendicular NA 16 (406) 24 (610)
⁄8 (9.5) ceilings parallel NA NR 24 (610)
⁄2 (12.7) ceilings perpendicular NA 24 (610) 24 (610)
⁄2 (12.7) ceilings parallel NA 16 (406) 24 (610)
A A A
⁄8 (15.9) . . . ceilings perpendicular 24 (610) 24 (610) 24 (610)
A A A
. . . ceilings parallel 16 (406) 16 (406) 16 (406)
⁄8 (9.5) ceilings perpendicular NA 16 (406) 24 (406)
⁄8 (9.5) ceilings parallel NA NR 24 (610)
1 5
⁄2 or ⁄8 (12.7 or 15.9) ceilings perpendicular NA 24 (610) 24 (610)
1 5
⁄2 or ⁄8 (12.7 or 15.9) ceilings parallel NA 16 (406) 24 (406)
1 A A
⁄4 (6.4) . . . walls parallel NR 16 (406) 16 (406)
⁄8 (9.5) walls NR NR NR NR
1 5
⁄2 or ⁄8 (12.7 or 15.9) walls perpendicular or parallel NA 16 (406) 16 (406)
A A A
⁄8 (9.5) . . . walls perpendicular or parallel 16 (406) 16 (406) 24 (610)
3 1 5
⁄8 or ⁄2 or ⁄8 (9.5 or walls perpendicular or parallel NA 16 (406) 24 (610)
12.7 or 15.9)
A A A
1 5
⁄2 or ⁄8 (12.7 or . . . walls perpendicular or parallel 24 (610) 24 (610) 24 (610)
15.9)
3 1 5
⁄8 or ⁄2 or ⁄8 (9.5 or walls perpendicular or parallel NA 24 (610) 24 (610)
12.7 or 15.9)
Perpendicular—perpendicular to framing members
Parallel—parallel to framing members
NA—not applicable
NR—not recommended
oc—on center
A
Denotes framing spacing for base layer in two-layer application.
C754–00
TABLE 2 Spans and Spacings of Horizontal Furring Members
5.2.2 Runners to Concrete Slabs—Shall be fastened with
A
Maximum Spacing Maximum Span, concrete stub nails, expansion anchors, shielded screws, or
Type of Furring
B
ctoc, in. (mm) ft (mm)
power-driven fasteners not exceeding 24 in. (610 mm) on
Rigid Furring Channel 24 (610) 4 (1220)
center.
1 ⁄8 in. (41 mm) stud 24 (610) 5 (1520)
5.2.3 Runners to Wood—Shall be fastened with screws
(erected with
open side up and against providing not less than 1 in. (25 mm) penetration or nails
support)
providing 1 ⁄2 in. (38 mm) penetration into the wood.
2 ⁄2 in. (64 mm) stud 24 (610) 6 (1830)
5.2.4 Runners to Suspended Ceilings—Shall be fastened
(erected with
C
web vertical to support)
with “Molly”-type expandable fasteners, toggle bolts, clamps,
3 ⁄8 in. (92 mm) stud 24 (610) 8 (2440)
or screws into channels, splines, “T” runners, or other mem-
(erected with
C
bers.
web vertical to support)
A
5.3 Stud Installation:
Consult Table 1 for maximum spacing as determined by gypsum panel product
thickness.
5.3.1 Stud Height and Spacing Limitations:
B
c to c—center to center
C
5.3.1.1 Maximum framing spacing determined by gypsum
A 6 in. (150 mm) length of same size stud or track shall be nested to form a
“box” at each saddle tie.
panel product thickness shall be in accordance with Table 1.
5.3.1.2 Stud heights shall be not greater than those shown in
Tables 3 and 4.
5.2 Runner (Track) Installation:
5.3.1.3 Studs shall engage both the floor and ceiling run-
5.2.1 General—Runners shall be aligned accurately at the
ners. The gap between the end of a stud and the web of the top
floor and ceiling and securely anchored approximately 2 in. (50
and bottom runner shall be not more than ⁄4 in. (6 mm).
mm) from the runner ends, not more than 24 in. (610 mm) on
5.3.1.4 Where conditions require that a partition be con-
center. Runners shall be secured with fasteners at partition
structed with compensation for vertical structural movement,
corners. One runner shall extend to the end of the corner and
the gap between the end of a stud and the adjacent runner shall
the other runner shall butt to it and be gapped to allow
be designed by an architect or engineer.
clearance for the gypsum panel product thickness. Runners
shall not be mitered. 5.3.2 Location:
A B
TABLE 3 Maximum Stud Height , ft-in. (mm), Single Layer ⁄2-in. (12.7-mm) Thick Gypsum Board on Each Side of Minimum 0.0179-in.
C
(0.455-mm) Base Metal Thickness Steel Studs Spaced 12-in. (305-mm), 16-in. (406-mm), and 24-in. (610-mm) o.c.
Maximum Stud Height
ft-in. (mm)
Stud Depth, in.
Framing Spaced Framing Spaced Framing Spaced
Deflection
(mm), Industry
12 in. (305 mm) o.c. 16 in. (406 mm) o.c. 24 in. (610 mm) o.c.
Limit
D
Designator
Lateral Pressure Lateral Pressure Lateral Pressure
5 psf 7.5 psf 10 psf 5 psf 7.5 psf 10 psf 5 psf 7.5 psf 10 psf
(240 Pa) (360 Pa) (480 Pa) (240 Pa) (360 Pa) (480 Pa) (240 Pa) (360 Pa) (480 Pa)
E
L/120 11-2 (3400) 9-9 (2970) 8-10 (2690) 10-7 (3230) 8-10 (2690) 8-4 (2540) 9-9 (2970) 8-0 (2440)
1- ⁄8 (41.3)
EE EE EE
L/240 8-10 (2690) 8-4 (2540) 7-11 (2410)
162S125-18
EEEEEEEEE
L/360
L/120 15-1 (4600) 12-4 (3760) 10-9 (3280) 13-3 (4040) 10-10 (3300) 9-5 (2870) 11-10 (3610) 9-8 (2950) 8-5 (2570)
2- ⁄2 (63.5)
L/240 11-11 (3630) 10-5 (3180) 9-6 (2900) 11-3 (3430) 9-10 (3000) 8-11 (2720) 10-7 (3230) 9-3 (2820) 8-5 (2570)
250S125-18
E E E
L/360 10-5 (3180) 9-1 (2770) 9-10 (3000) 8-7 (2620) 9-3 (2820) 8-1 (2460)
L/120 17-8 (5380) 14-3 (4340) 12-5 (3780) 15-4 (4670) 12-5 (3780) 10-9 (3280) 13-9 (4190) 11-0 (3350) 9-5 (2870)
F
3- ⁄2 (88.9)
L/240 15-4 (4670) 13-3 (4040) 12-0 (3660) 14-4 (4370) 12-5 (3780) 10-9 (3280) 13-5 (4090) 11-0 (3350) 9-5 (2870)
350S125-18
L/360 13-3 (4040) 11-7 (3530) 10-5 (3180) 12-4 (3760) 10-10 (3300) 9-9 (2970) 11-7 (3530) 10-1 (3070) 9-1 (2770)
L/120 19-6 (5940) 15-9 (4800) 13-8 (4170) 17-2 (5230) 13-10 (4220) 11-11 (3630) 15-1 (4600) 12-1 (3680) 10-5 (3180)
4 (101.6)
L/240 16-5 (5000) 14-4 (4370) 13-0 (3960) 15-4 (4670) 13-4 (4060) 11-11 (3630) 14-2 (4320) 12-1 (3680) 10-5 (3180)
400S125-18
L/360 14-4 (4370) 12-6 (3810) 11-4 (3450) 13-4 (4060) 11-8 (3560) 10-6 (3200) 12-4 (3760) 10-9 (3280) 9-9 (2970)
L/120 22-10 (6960) 18-7 (5660) 16-2 (4930) 19-9 (6020) 16-2 (4930) 14-0 (4270) 16-9 (5110) 13-5 (4090) 11-5 (3480)
6 (152.4)
L/240 22-1 (6730) 18-7 (5660) 16-2 (4930) 19-9 (6020) 16-2 (4930) 14-0 (4270) 16-9 (5110) 13-5 (4090) 11-5 (3480)
600S125-18
L/360 19-4 (5890) 16-9 (5110) 15-0 (4570) 17-11 (5460) 15-7 (4750) 13-10 (4220) 16-9 (5110) 13-5 (4090) 11-5 (3480)
A
Based on tests conducted with gypsum board attached with screws spaced 12 in. (305 mm) o.c. to framing members.
B 1
Maximum stud heights are also applicable to walls sheathed with gypsum board greater than ⁄2 in. (12.7 mm) thick and multiple layers of gypsum board.
C
Runner flanges need not be fastened to studs except as required by 5.3.2.1.
D
The Industry Designator defines the cold formed steel framing member.
Example: 350S125-18:
350 designates the member web depth in 100ths of an in., 350 = 3.50 in. (88.9 mm).
S designates the type of member, S = stud.
125 designates the member flange width in 100ths of an in., 125 = 1.25 in. (32 mm).
18 designates the member base metal thickness in mils, 18 = .0179 in. (0.455 mm).
E
Data not available.
F
Also applicable to 3- ⁄8 in. (92.1 mm) stud depth, 362S125-18.
C754–00
A B
TABLE 4 Maximum Stud Height , ft-in. (mm), Single Layer ⁄2-in. (12.7-mm) Thick Gypsum Board on Each Side of Minimum 0.0329-in.
C
(0.836-mm) Base Metal Thickness Steel Studs Spaced 12-in. (305-mm), 16-in. (406-mm), and 24-in. (610-mm) o.c.
Maximum Stud Height
ft-in. (mm)
Stud Depth, in.
Framing Spaced Framing Spaced Framing Spaced
Deflection
(mm), Industry
12 in. (305 mm) o.c. 16 in. (406 mm) o.c. 24 in. (610 mm) o.c.
Limit
D
Designator
Lateral Pressure Lateral Pressure Lateral Pressure
5 psf 7.5 psf 10 psf 5 psf 7.5 psf 10 psf 5 psf 7.5 psf 10 psf
(240 Pa) (360 Pa) (480 Pa) (240 Pa) (360 Pa) (480 Pa) (240 Pa) (360 Pa) (480 Pa)
L/120 13-0 (3960) 11
...