ASTM C36/C36M-99e1

Standard Specification for Gypsum Wallboard

SCOPE
1.1 This specification covers gypsum wallboard which is designed to be used for walls, ceilings, or partitions and affords a surface suitable to receive decoration.  
Note 1--Specification C840 contains application procedures for gypsum wallboard.
1.2 The values stated in either inch-pound or SI (metric) units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined..
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

General Information

• Status: Historical
• Publication Date: 09-May-2001
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaced By: ASTM C36/C36M-01 - Standard Specification for Gypsum Wallboard
• Effective Date: 10-May-2001
• Referred By: ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 10-May-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: C 36/C 36M – 99
Standard Specification for
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Gypsum Wallboard
This standard is issued under the fixed designation C 36/C 36M; 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.
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e NOTE—The introduction to the Appendix was editorially updated in April 2000.
1. Scope * 3. Terminology
1.1 This specification covers gypsum wallboard which is 3.1 Definitions of terms shall be in accordance with Termi-
designed to be used for walls, ceilings, or partitions and affords nology C 11.
a surface suitable to receive decoration.
4. Materials and Manufacture
1.2 The values stated in either inch-pound or SI (metric)
units are to be regarded separately as standard. Within the text, 4.1 Gypsum wallboard shall consist of a noncombustible
core, essentially gypsum, surfaced with paper bonded to the
the SI units are shown in brackets. The values stated in each
system shall be used independent of the other. Values from the core.
4.2 Foil-backed gypsum wallboard shall consist of gypsum
two systems shall not be combined.
1.3 The text of this standard references notes and footnotes wallboard with a layer of aluminum foil laminated to the back
surface.
that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered 4.3 Gypsum wallboard, type X (special fire-resistant) des-
ignates gypsum wallboard complying with this specification
as requirements of the standard.
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that provides not less than 1 h fire-resistance for boards ⁄8 in.
2. Referenced Documents
3 1
[15.9 mm] thick or ⁄4 h fire-resistance for boards ⁄2 in. [12.7
2.1 ASTM Standards: mm] thick, applied parallel with and on each side of load
C 11 Terminology Relating to Gypsum and Related Build- bearing 2 3 4 wood studs spaced 16 in. [406 mm] o.c. with 6d
2
7
ing Materials and Systems coated nails, 1 ⁄8 in. [48 mm] long, 0.0915 in. [2.32 mm]
1
C 473 Test Methods for Physical Testing of Gypsum Panel diameter shank, ⁄4 in. [6.4 mm] diameter heads, spaced 7 in.
2
Products [178 mm] o.c. with wallboard joints staggered 16 in. [406 mm]
C 645 Specification for Nonstructural Steel Framing Mem- on each side of the partition and tested in accordance with the
2
bers requirements of Test Method E 119.
C 1264 Specification for Sampling, Inspection, Rejection,
NOTE 1—Consult producers for independent test data on assembly
Certification, Packaging, Marking, Shipping, Handling,
details and fire resistance classifications for other types of construction.
2
and Storage of Gypsum Board
See official fire test reports for assembly particulars, materials, and
E 84 Test Method for Surface Burning Characteristics of
classifications.
3
Building Materials
4.4 Gypsum wallboard shall have a flame spread index of
E 96 Test Methods for Water Vapor Transmission of Mate-
not more than 25 when tested in accordance with Test Method
4
rials
E 84.
E 119 Test Methods for Fire Tests of Building Construction
3
and Materials 5. Physical Properties
5.1 Specimens shall be taken from the samples obtained in
accordance with Specification C 1264.
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This specification is under the jurisdiction of ASTM Committee C-11 on
5.2 Specimens shall be tested in accordance with Test
Gypsum and Related Building Materials and Systems and is the direct responsibility
Methods C 473.
of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
Current edition approved Oct. 10, 1999. Published December 1999. Originally
5.2.1 Flexural Strength—The specimens shall be tested face
published as C 36 – 21 T. Last previous edition C 36 – 97.
up and face down. The average breaking load shall be not less
2
Annual Book of ASTM Standards, Vol 04.01.
3 than the following:
Annual Book of ASTM Standards, Vol 04.07.
4
Annual Book of ASTM Standards, Vol 04.06.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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C 36/C 36M
accordance with Specification C 1264.
Method A Method B
Load, lbf [N] Load, lbf [N]
Load, lbf [N] Load, lbf [N] 6.2 Thickness, width, length, and end squareness shall be
Bearing Edges Bearing Edges
Bearing Edges Bearing Edges
determined in accordance with Test Methods C 473.
Parallel to Parallel to
Across Fiber Across Fiber
Thickness, Fiber of Fiber of
6.2.1 Thickness—The nominal thickness shall
of Surfacing of Surfacing
in. [mm] Surfacing Surfacing
1 5 3 1 5 3
1 be ⁄4, ⁄16, ⁄8, ⁄2, ⁄8, ⁄4 in. [6.4, 7.9, 9.5, 12
...