ASTM C844-99

Standard Specification for Application of Gypsum Base to Receive Gypsum Veneer Plaster

SCOPE
1.1 This specification covers the minimum requirements for, and methods of, application of gypsum veneer base for gypsum veneer plasters.  Note 1-Gypsum veneer base shall not be used as a base for direct adhesive application of ceramic, metal, or plastic tile in areas exposed to abnormal moisture or humidity or temperature.
1.2 Where a specific degree of fire resistance is required for gypsum base and veneer plaster systems, a special resistant base may be required. Details of constructions to achieve the required fire resistance may be obtained from official reports of fire tests conducted at recognized fire testing laboratories in accordance with Test Methods E119.  
1.3 Where a specific degree of sound control is required for veneer plaster assemblies and constructions, details of construction shall be in accordance with official reports of tests conducted in recognized sound testing laboratories in accordance with the applicable sound tests, Test Method C423, Test Method E90, or Test Method E492.  
1.4 Where this specification is more stringent (size or thickness of framing; spacing of fasteners) than the fire-rated construction, this specification shall govern; otherwise, the construction described in the fire test report shall govern.  
1.5 Unheated spaces above gypsum veneer base ceilings shall be properly ventilated (see Appendix X3).  
1.6 General Information -The Appendixes give general information and also suggestions for inclusions to be made elsewhere by the specifier and are not a part of this specification. The work shall be properly coordinated with the work of other trades.

General Information

• Status: Historical
• Publication Date: 09-Oct-1999
• 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

• Replaced By: ASTM C844-04 - Standard Specification for Application of Gypsum Base to Receive Gypsum Veneer Plaster
• Effective Date: 01-Oct-2004
• Referred By: ASTM C1396/C1396M-17 - Standard Specification for Gypsum Board
• Effective Date: 10-Oct-1999
• Referred By: ASTM C843-23 - Standard Specification for Application of Gypsum Veneer Plaster
• Effective Date: 10-Oct-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 844 – 99
Standard Specification for
Application of Gypsum Base to Receive
1
Gypsum Veneer Plaster
This standard is issued under the fixed designation C 844; 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.
1. Scope * C 11 Terminology Relating to Gypsum and Related Build-
2
ing Materials and Systems
1.1 This specification covers the minimum requirements for,
C 423 Test Method for Sound Absorption and Sound Ab-
and methods of, application of gypsum veneer base for gypsum
3
sorption Coefficients by the Reverberation Room Method
veneer plasters.
C 514 Specification for Nails for the Application of Gyp-
1.2 Gypsum veneer base shall not be used as a base for
2
sum Board
direct adhesive application of ceramic, metal, or plastic tile in
2
C 587 Specification for Gypsum Veneer Plaster
areas exposed to abnormal moisture or humidity or tempera-
2
C 588 Specification for Gypsum Base for Veneer Plasters
ture.
C 754 Specification for Installation of Steel Framing Mem-
1.3 Details of construction for a specific assembly to
2
bers to Receive Screw-Attached Gypsum Panel Products
achieve the required fire resistance shall be obtained from
C 954 Specification for Steel Drill Screws for the Applica-
reports of fire-resistance tests, engineering evaluations, or
tion of Gypsum Panel Products or Metal Plaster Bases to
listings from recognized fire testing laboratories.
Steel Studs from 0.033 in. (0.84 mm) to 0.012 in. (2.84
1.4 Where a specific degree of sound control is required for
2
mm) in Thickness
veneer plaster assemblies and constructions, details of con-
C 955 Specification for Load-Bearing Transverse and
struction shall be in accordance with official reports of tests
2
Axial
conducted in recognized sound testing laboratories in accor-
C 1002 Specification for Steel Drill Screws for the Appli-
dance with the applicable sound tests, Test Method C 423, Test
2
cation of Gypsum Panel Products or Metal Plaster Bases
Method E 90, or Test Method E 492.
C 1007 Specification for Installation of Load Bearing
1.5 Where this specification is more stringent (size or
2
Transverse and Axial
thickness of framing; spacing of fasteners) than the fire-rated
C 1047 Specification for Accessories for Gypsum Wall-
construction, this specification shall govern; otherwise, the
2
board and Gypsum Veneer Base
construction described in the fire test report shall govern.
E 90 Test Method for Laboratory Measurement of Airborne
1.6 Unheated spaces above gypsum veneer base ceilings
Sound Transmission Loss of Building Partitions and Ele-
shall be properly ventilated (see Appendix X3).
3
ments
1.7 The values stated in inch-pound units are to be regarded
E 492 Test Method for Laboratory Measurement of Impact
as the standard. The SI (metric) values given in parentheses are
Sound Transmission Through Floor-Ceiling Assemblies
approximate and are provided for information purposes only.
3
Using the Tapping Machine
1.8 The text of this standard references notes and footnotes
2.2 American Softwood Lumber Standard:
which provide explanatory material. These notes and footnotes
4
PS–20 American Softwood Lumber Standard
(excluding those in tables and figures) shall not be considered
as requirements of the standard.
3. Terminology
2. Referenced Documents 3.1 Definitions—Definitions shall be in accordance with
Terminology C 11.
2.1 ASTM Standards:
3.2 Definitions of Terms Specific to this Standard:
1
This specification is under the jurisdiction of ASTM Committee C-11 on
Gypsum and Related Building Material and Systems, and is the direct responsibility
2
of Subcommittee C11.03 on Specifications for Application of Gypsum and Other Annual Book of ASTM Standards, Vol 04.01.
3
Products in Assemblies. Annual Book of ASTM Standards, Vol 04.06.
4
Current edition approved Oct. 10, 1999. Published January 2000. Originally Available from National Institute of Standards and Technology, Gaithersburg,
published as C 844 – 78. Last previous edition C 844 – 98a. MD 20899.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C 844
3.2.1 base ply—first ply of gypsum base in multiple ply 6.2 Gypsum board shall be stored so as to be kept dry,
application. preferably inside a building, under a roof. Gypsum board shall
3.2.2 face ply—outer or visible layer of gypsum base in be neatly stacked flat with care taken to prevent saggi
...