ASTM C843-99(2012)

Standard Specification for Application of Gypsum Veneer Plaster

ABSTRACT
This specification covers the minimum requirements for gypsum veneer plaster and includes application methods on systems such as electric heat cable systems but not exceeding a specified temperature. Applicable building code regulations should be followed when a specific degree of fire resistance is required. Plaster and other cementitious materials should be kept dry until these are ready to be used and should be kept off the ground, under cover, and away from damp walls and surfaces.
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.  
1.2.1 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.  
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 Methods E90, C423, or E492.  
Note 1—To ensure desirable results, coordinate this specification with Specification C844.
Note 2—General information regarding matters of a contractual nature concerning veneer plaster work is found in Appendix X1. 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 which 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: 29-Feb-2012
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• 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

Relations

• Replaces: ASTM C843-99(2006) - Standard Specification for Application of Gypsum Veneer Plaster
• Effective Date: 01-Mar-2012
• Referred By: ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Mar-2012
• Referred By: ASTM C587-04(2018) - Standard Specification for Gypsum Veneer Plaster
• Effective Date: 01-Mar-2012

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:C843 −99 (Reapproved 2012)
Standard Specification for
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Application of Gypsum Veneer Plaster
This standard is issued under the fixed designation C843; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification covers the minimum requirements for
C11 Terminology Relating to Gypsum and Related Building
and methods of applying gypsum veneer plaster.
Materials and Systems
1.2 Where a specific degree of fire resistance is required for
C423 Test Method for SoundAbsorption and SoundAbsorp-
veneer plaster systems, applicable building code regulations
tion Coefficients by the Reverberation Room Method
shall be followed.
C587 Specification for Gypsum Veneer Plaster
1.2.1 Details of construction for a specific assembly to
C588/C588M Specification for Gypsum Base for Veneer
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achieve the required fire resistance shall be obtained from
Plasters (Withdrawn 2005)
reports of fire-resistance tests, engineering evaluations, or
C631 Specification for Bonding Compounds for Interior
listings from recognized fire testing laboratories.
Gypsum Plastering
C844 Specification for Application of Gypsum Base to
1.3 Where a specific degree of sound control is required for
Receive Gypsum Veneer Plaster
veneer plaster assemblies and constructions, details of con-
C1047 Specification for Accessories for Gypsum Wallboard
struction shall be in compliance with official reports of tests
and Gypsum Veneer Base
conducted in recognized sound testing laboratories in accor-
E90 Test Method for Laboratory Measurement of Airborne
dance with the applicable sound tests of Test Methods E90,
Sound Transmission Loss of Building Partitions and
C423,or E492.
Elements
NOTE 1—To ensure desirable results, coordinate this specification with
E492 Test Method for Laboratory Measurement of Impact
Specification C844.
Sound Transmission Through Floor-Ceiling Assemblies
NOTE 2—General information regarding matters of a contractual nature
Using the Tapping Machine
concerning veneer plaster work is found in Appendix X1. Additional
technical information related to veneer plastering is provided in Appendix
3. Terminology
X2.
3.1 Definitions:
1.4 The values stated in inch-pound units are to be regarded
3.1.1 See Terminology C11.
as the standard. The values given in parentheses are for
3.2 Definitions of Terms Specific to This Standard:
information only.
3.2.1 base coat, n—veneer plaster trowel or machine ap-
plied as the first coat of a two-component system.
1.5 The text of this specification references notes and
footnotes which provide explanatory material. These notes and 3.2.2 finish coat, n—veneer finish plaster trowel or machine
footnotes (excluding those in tables and figures) shall not be applied as the second coat over the base coat plaster in a
considered as requirements of the specification. two-component system.
3.2.2.1 smooth-trowel finish, n—a finish resulting from steel
troweling with a minimum of water after the plaster has
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This specification is under the jurisdiction of ASTM Committee C11 on
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GypsumandRelatedBuildingMaterialsandSystemsandisthedirectresponsibility For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ofSubcommitteeC11.03onSpecificationsfortheApplicationofGypsumandOther contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Products in Assemblies. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2012. Published June 2012. Originally the ASTM website.
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approved in 1976. Last previous edition approved in 2006 as C843–99 (2006). DOI: The last approved version of this historical standard is referenced on
10.1520/C0843-99R12. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C843−99 (2012)
become firm.Asmooth finish free of trowel marks, blemishes, 7. Materials
or other imperfections.
7.1 Gypsum Base for Veneer Plasters (hereinafter referred
3.2.2.2 texture finish, n—a finish resulting from (1) trowel to as “gypsum base”) Specification C588/C588M.
applicationfollowedbyfloatingortexturingofthesurfacewith
7.2 Veneer Plasters—Specification C587.
any of a variety of tools using a minimum of water or (2)
7.3 Reinforcing—Noncorrosive strip providing the joint
machine application, left as applied or followed by hand
strength requirements of Specification C587.
texturing.
7.4 L
...