ASTM C1381-97(2002)e1

Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts

SCOPE
1.1 This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction.
1.2 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in parentheses. 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 information presented refers to the molded surface of the part.
1.4 The text of this standard references footnotes, which provide explanatory material. These footnotes shall not be considered as requirements of the standard.

General Information

• Status: Historical
• Publication Date: 09-Dec-1997
• 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

• Replaces: ASTM C1381-97 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 10-Dec-1997
• Replaced By: ASTM C1381/C1381M-97(2008)e1 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-May-2008

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
e1
Designation: C 1381 – 97 (Reapproved 2002)
Standard Specification for
Molded Glass Fiber Reinforced Gypsum Parts
This standard is issued under the fixed designation C 1381; 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.
e NOTE—“Permissible Variations” has been editorially changed to “Tolerances” in the title of Section 6 June 2002.
1. Scope 3.2.5 GRG product, n—combination of GRG parts used as
architectural embellishment.
1.1 This specification covers molded glass fiber reinforced
3.2.6 mock-up, n—a presentation assembly of GRG parts
gypsum (GRG) parts, which are nonload-bearing, thin-shell,
defined by the purchase agreement.
ornamental shapes for architectural embellishment of interior
3.2.7 part thickness, n—thickness of a part at any measure-
building construction.
ment point.
1.2 The values stated in either inch-pound or SI units are to
be regarded separately as standard. Within the text, the SI units
4. Materials and Manufacture
are shown in parentheses. The values stated in each system
4.1 Materials—GRGpartsshallbeproducedusingthesame
shall be used independent of the other. Values from the two
materials used to make the composites in conformance with
systems shall not be combined.
Specification C 1355/C 1355M.
1.3 The information presented refers to the molded surface
4.2 Manufacture:
of the part.
4.2.1 GRG parts shall be manufactured from the mixed
1.4 The text of this standard references footnotes, which
slurry of alpha gypsum cement, potable water and additives,
provide explanatory material. These footnotes shall not be
when used, and not less than 5 % by weight glass fiber
considered as requirements of the standard.
reinforcement using either the hand lay-up or the spray-up
2. Referenced Documents process in a mold.
4.2.2 GRG parts shall be produced according to approved
2.1 ASTM Standards:
shop drawings.
C 11 Terminology Relating to Gypsum and Related Build-
2 4.2.3 Shop drawings shall specify part dimensions, quanti-
ing Materials and Systems
ties, recommended attachment points and methods, reinforce-
C 1355/C 1355M Specification for Glass Fiber Reinforced
2 ments, embedments, and tolerance.
Gypsum (GRG) Composites
5. Mechanical Properties
3. Terminology
5.1 GRG parts shall be made from materials to make
3.1 Definitions—Definitions of terms shall be in accordance
composites having properties in accordance with Specification
with Terminology C 11.
C 1355/C 1355M.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 control thickness, n—the thickness of the GRG part
6. Dimensions and Tolerances of GRG Parts
where abutting other GRG parts, other products or at fastening
6.1 Part Thickness—The thickness of the GRG part shall be
points.
not less than ⁄16 in. (5 mm).
3.2.2 embedments, n—materials encapsulated into the part
6.2 Control Thickness, shall be not less than ⁄16in. (8 mm).
for the purpose of suspension, attachment, and stiffening.
6.3 Straightness—At any point on a line generally along a
3.2.3 finish surface, n—a surface against a mold.
plane, an edge, or a surface, the molded side of the part shall
3.2.4 GRG part, n—an individual molded component used
not vary from straight 6 ⁄8 in. in 8 linear ft (1 mm in 750 mm).
as architectural embellishment.
6.4 Dimensions, as specified in approved shop drawings,
pertaining to the individual part.
This specification is under the jurisdiction of ASTM Committee C11 on
6.4.1 Overall Width, 6 ⁄8 in. (3 mm).
Gypsum and Related Building Materials and Systems and is the direct responsibility
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