ASTM C1381/C1381M-97(2008)e1

Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts

ABSTRACT
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. GRG parts shall be produced using the same materials used to make the composites in conformance with the referenced specification. GRG parts shall be manufactured from the mixed slurry or alpha gypsum cement, potable water and additives, and glass fiber reinforcement using either the hand lay-up or the spray-up process in a mold. GRG parts shall be produced according to approved shop drawings. Shop drawings shall specify part dimensions, quantities, recommended attachment points and methods, reinforcements, embedments, and tolerance. The material shall conform to the required mechanical properties and to the specified dimensions and tolerances of GRG 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 SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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: 30-Apr-2008
• 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(2002)e1 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-May-2008
• Replaced By: ASTM C1381/C1381M-97(2013) - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-Jun-2013
• Referred By: ASTM C1467/C1467M-00(2021) - Standard Specification for Installation of 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
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Designation:C1381/C1381M −97(Reapproved 2008)
Standard Specification for
Molded Glass Fiber Reinforced Gypsum Parts
This standard is issued under the fixed designation C1381/C1381M; 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 (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—The units statement in subsection 1.2 was corrected and the standard was changed to a dual designation editori-
ally in July 2008.
1. Scope 3.2.1 control thickness, n—the thickness of the GRG part
where abutting other GRG parts, other products or at fastening
1.1 This specification covers molded glass fiber reinforced
points.
gypsum (GRG) parts, which are nonload-bearing, thin-shell,
3.2.2 embedments, n—materials encapsulated into the part
ornamental shapes for architectural embellishment of interior
for the purpose of suspension, attachment, and stiffening.
building construction.
3.2.3 finish surface, n—a surface against a mold.
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, the
3.2.4 GRG part, n—an individual molded component used
SI units are shown in brackets. The values stated in each
as architectural embellishment.
system may not be exact equivalents; therefore, each system
3.2.5 GRG product, n—combination of GRG parts used as
shall be used independently of the other. Combining values
architectural embellishment.
from the two systems may result in non-conformance with the
3.2.6 mock-up, n—a presentation assembly of GRG parts
standard.
defined by the purchase agreement.
1.3 The information presented refers to the molded surface
3.2.7 part thickness, n—thickness of a part at any measure-
of the part.
ment point.
1.4 The text of this standard references footnotes, which
provide explanatory material. These footnotes shall not be
4. Materials and Manufacture
considered as requirements of the standard.
4.1 Materials—GRG parts shall be produced using the same
materials used to make the composites in conformance with
2. Referenced Documents
Specification C1355/C1355M.
2.1 ASTM Standards:
4.2 Manufacture:
C11 Terminology Relating to Gypsum and Related Building
4.2.1 GRG parts shall be manufactured from the mixed
Materials and Systems
slurry of alpha gypsum cement, potable water and additives,
C1355/C1355M Specification for Glass Fiber Reinforced
when used, and not less than 5 % by weight glass fiber
Gypsum Composites
reinforcement using either the hand lay-up or the spray-up
process in a mold.
3. Terminology
4.2.2 GRG parts shall be produced according to approved
3.1 Definitions—Definitions of terms shall be in accordance
shop drawings.
with Terminology C11.
4.2.3 Shop drawings shall specify part dimensions,
quantities, recommended attachment points and methods,
3.2 Definitions of Terms Specific to This Standard:
reinforcements, embedments, and tolerance.
5. Mechanical Properties
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility 5.1 GRG parts shall be made from materials to make
of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
composites having properties in accordance with Specification
CurrenteditionapprovedMay1,2008.PublishedJuly2008.Originallyapproved
C1355/C1355M.
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in 1998. Last previous edition approved in 2002 as C1381 – 97(2002) . DOI:
10.1520/C1381_C1381M-97R08E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6. Dimensions and Tolerances of GRG Parts
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.1 Part Thickness—The thickness of the GRG part shall be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. not less than ⁄16 in. [5 mm].
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