ASTM C1395/C1395M-98

Specification for Gypsum Ceiling Board

SCOPE
1.1 This specification covers 1/2 in. (12.7 mm) thick gypsum ceiling board designed for use on interior ceilings with framing spaced not more than 24 in. (610 mm) on center and that affords a surface suitable to receive water-based texture and other decoration. This product is also suitable for use on interior walls.
Note 1--Specification C840 contains application procedures for gypsum ceiling board.
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately 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.

General Information

• Status: Historical
• Publication Date: 09-May-2001
• ICS: 91.060.10 - Walls. Partitions. Facades
• 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 C1395/C1395M-01 - Specification for Gypsum Ceiling Board
• Effective Date: 10-May-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1395 / C 1395M – 98
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Specification for
1
Gypsum Ceiling Board
This standard is issued under the fixed designation C 1395 / C 1395M; 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.
3
1. Scope cation that provides not less than ⁄4 h fire–resistance for boards
1 applied parallel with and on each side of load bearing 2 3 4
1.1 This specification covers ⁄2 in. [12.7 mm] thick gypsum
wood studs spaced 16 in. [406 mm] on centers with 6d coated
ceiling board designed for use on interior ceilings with framing
7
nails, 1 ⁄8 in. [48 mm] long, 0.0915 in. [2.3 mm] diameter
spaced not more than 24 in. [610 mm] on center and that
1
shank, ⁄4 in. [6.4 mm] diameter heads, spaced 7 in. [178 mm]
affords a surface suitable to receive water–based texture and
on centers with gypsum board joints staggered 16 in. [406 mm]
other decoration. This product is also suitable for use on
on each side of the partition and tested in accordance with Test
interior walls.
Methods E 119.
1.2 The values stated in either inch–pound units or SI
(metric) are to be regarded separately as standard. Within the
NOTE 1—Consult producers for independent test data on assembly
text, the SI units are shown in brackets. The values stated in details and fire resistance classifications for other types of construction.
See official fire test reports for assembly particulars, materials, and
each system shall be used independent of the other. Values
classifications.
from the two systems shall not be combined.
4.3 Gypsum ceiling board shall have a flame spread index of
2. Referenced Documents
not more than 25 when tested in accordance with Test Method
2.1 ASTM Standards:
E 84.
C 11 Terminology Relating to Gypsum and Related Build-
2
5. Physical Properties
ing Materials and Systems
C 473 Test Methods for Physical Testing of Gypsum Panel
5.1 Specimens shall be taken from the samples obtained in
2
Products
accordance with Specification C 1264.
C 645 Specification for Nonstructural Steel Framing Mem-
5.1.1 Specimens shall be tested in accordance with Test
2
bers
Methods C 473.
C 1264 Specification for Sampling, Inspection, Rejection,
5.1.2 Flexural Strength—The specimens shall be tested face
Certification, Packaging, Marking, Shipping, Handling,
up and face down. The average breaking load shall be not less
2
and Storage of Gypsum Board
than that given in Table 1.
E 84 Test Methods for Surface Burning Characteristics of
5.1.3 Humidified Deflection—The specimens shall have an
3
5
Building Materials
average deflection of not more than ⁄16 in. [8 mm].
E 119 Test Methods for Fire Tests of Building Construction
5.1.4 Core, End, and Edge Hardness—The specimens shall
3
and Materials
have an average hardness of not less than 15 lbf [67 N] when
tested by Method A and 11 lbf [49 N] when tested by Method
3. Terminology
B.
3.1 Definitions used in this specification shall be in accor-
5.1.5 Nail Pull Resistance—The specimens shall have an
dance with Terminology C 11.
average nail–pull resistance of not less 80 lbf [356 N] when
tested by Method A and 77 lbf [343 N] when tested by Method
4. Materials and Manufacture
B.
4.1 Gypsum ceiling board shall consist of a noncombustible
6. Dimensions and Permissible Variations
core, essentially gypsum, surfaced with paper bonded to the
core.
6.1 Specimens shall be taken from the samples obtained in
4.2 Gypsum ceiling board, type X (special fire-resistant),
accordance with Specification C 1264.
designates gypsum ceiling board complying with this specifi-
6.2 Thickness, width, length, and end squareness shall be
determined in accordance with Test Methods C 473.
1
1
6.2.1 Thickness—The nominal thickness shall be ⁄2 in.
This test method is under the jurisdiction of ASTM C-11 on Gypsum and
Related Building Materials and Systems and is the direct responsibility of [12.7 mm] with permissible variations in the nominal thickness
Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products. 1 1
of 6 ⁄64 in. [0.4 mm] with permissible local variations of 6 ⁄32
Current edition approved July 10, 1998. Published December 1998.
in. [0.8 mm] from the nominal thickness.
2
Annual Book of ASTM Standards, Vol 04.01.
3
6.2.2 Width—The width shall be up to 48 in. [1220 mm]
Annual Book of ASTM Standards, Vol 04.07.
1

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C 1395 / C 1395M
TABLE 1 Flexural Strength
and either square, recessed, beveled, featured, tapered, or
METHOD A METHOD B fe
...