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ASTM C843-99

(Specification)

Standard Specification for Application of Gypsum Veneer Plaster

Standard Specification for Application of Gypsum Veneer Plaster

SCOPE
1.1 This specification covers the minimum requirements for and methods of applying gypsum veneer plaster.  
1.2 Where a specific degree of fire resistance is required for veneer plaster systems, applicable building code regulations shall be followed.
Note 1- Details of construction that have achieved required fire resistance endurance ratings may be obtained from official reports of fire tests conducted at recognized fire testing laboratories in accordance with Test Methods E 119.  
1.3 Where a specific degree of sound control is required for veneer plaster assemblies and constructions, details of construction shall be in compliance with official reports of tests conducted in recognized sound testing laboratories in accordance with the applicable sound tests of Test Method E 90, Test Method C 423, or Test Method E 492.  
Note 2-To ensure desirable results, coordinate this specification with Specification C844.
Note 3-General information regarding matters of a contractual nature concerning veneer plaster work is found in Appendix XI. Additional technical information related to veneer plastering is provided in Appendix X2.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.5 The text of this specification 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 specification.

General Information

Status
Historical
Publication Date
09-Oct-1999
Technical Committee
C11 - Gypsum and Related Building Materials and Systems
Drafting Committee
C11.03 - Specifications for the Application of Gypsum and Other Products in Assemblies
Current Stage
Ref Project

Relations

Replaced By
ASTM C843-99e1 - Standard Specification for Application of Gypsum Veneer Plaster
Effective Date
10-Oct-1999
Referred By
ASTM C587-04(2018) - Standard Specification for Gypsum Veneer Plaster
Effective Date
10-Oct-1999
Referred By
ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
Effective Date
10-Oct-1999

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ASTM C843-99 - Standard Specification for Application of Gypsum Veneer Plaster
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Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 843 – 99 An American National Standard
Standard Specification for
1
Application of Gypsum Veneer Plaster
This standard is issued under the fixed designation C 843; 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.
2
1. Scope * C 587 Specification for Gypsum Veneer Plaster
2
C 588 Specification for Gypsum Base for Veneer Plasters
1.1 This specification covers the minimum requirements for
C 631 Specification for Bonding Compounds for Interior
and methods of applying gypsum veneer plaster.
2
Gypsum Plastering
1.2 Where a specific degree of fire resistance is required for
C 844 Specification for Application of Gypsum Base to
veneer plaster systems, applicable building code regulations
2
Receive Gypsum Veneer Plaster
shall be followed.
C 1047 Specification for Accessories for Gypsum Wall-
1.2.1 Details of construction for a specific assembly to
2
board and Gypsum Veneer Base
achieve the required fire resistance shall be obtained from
E 90 Test Method for Laboratory Measurement of Airborne
reports of fire-resistance tests, engineering evaluations, or
Sound Transmission Loss of Building Partitions and Ele-
listings from recognized fire testing laboratories.
3
ments
1.3 Where a specific degree of sound control is required for
E 492 Test Method for Laboratory Measurement of Impact
veneer plaster assemblies and constructions, details of con-
Sound Transmission Through Floor-Ceiling Assemblies
struction shall be in compliance with official reports of tests
3
Using the Tapping Machine
conducted in recognized sound testing laboratories in accor-
dance with the applicable sound tests of Test Methods E 90,
3. Terminology
C 423, or E 492.
3.1 Definitions:
NOTE 1—To ensure desirable results, coordinate this specification with
3.1.1 See Terminology C 11.
Specification C 844.
3.2 Definitions of Terms Specific to This Standard:
NOTE 2—General information regarding matters of a contractual nature
3.2.1 base coat, n—veneer plaster trowel or machine ap-
concerning veneer plaster work is found in Appendix X1. Additional
plied as the first coat of a two-component system.
technical information related to veneer plastering is provided in Appendix
3.2.2 finish coat, n—veneer finish plaster trowel or machine
X2.
applied as the second coat over the base coat plaster in a
1.4 The values stated in inch-pound units are to be regarded
two-component system.
as the standard. The values given in parentheses are for
3.2.2.1 smooth-trowel finish, n—a finish resulting from steel
information only.
troweling with a minimum of water after the plaster has
1.5 The text of this specification references notes and
become firm. A smooth finish free of trowel marks, blemishes,
footnotes which provide explanatory material. These notes and
or other imperfections.
footnotes (excluding those in tables and figures) shall not be
3.2.2.2 texture finish, n—a finish resulting from (1) trowel
considered as requirements of the specification.
application followed by floating or texturing of the surface with
any of a variety of tools using a minimum of water or (2)
2. Referenced Documents
machine application, left as applied or followed by hand
2.1 ASTM Standards:
texturing.
C 11 Terminology Relating to Gypsum and Related Build-
3.2.3 joint-reinforcing embedment, n—the cementitious ma-
2
ing Materials and Systems
terial used to embed the strip material that is compatible with
C 423 Test Method for Sound Absorption and Sound Ab-
the veneer plaster used.
3
sorption Coefficients by the Reverberation Room Method
3.2.4 one-component system, n—a veneer plaster system
designed for application directly over approved bases in a
1
This specification is under the jurisdiction of ASTM Committee C-11 on
single plaster mix applied in a single coat or double-back
Gypsum and Related Building Materials and Systems and is the direct responsibility
operation with the same material.
of Subcommittee C11.03 on Specifications for Application of Gypsum and Other
Products in Assemblies. 3.2.5 reinforced joint, n—a joint between gypsum base that
Current edition approved Oct. 10, 1999. Published January 2000. Originally
is reinforced with strip material embedded in a cementitious
published as C 843 – 76. Last previous edition C 843 – 98.
material.
2
Annual Book of ASTM Standards, Vol 04.01.
3
3.2.6 reinforcing, n—joint reinforcing tape or mesh (strip
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 1
...

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7.5  
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