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ASTM C 844 Document Information:
Title
Standard Specification for Application of Gypsum Base to Receive Gypsum Veneer Plaster
ASTM International
Publication Date:
Oct 1, 2004
Scope:
(Footnote *)
This specification covers the minimum requirements for, and methods
of, application of gypsum
veneer base for gypsum veneer plasters.
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.
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.
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 C 423, Test Method E 90, or Test Method E 492.
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.
Unheated spaces above gypsum veneer base ceilings shall be properly
ventilated (see Appendix X3).
The values stated in inch-pound units are to be regarded as the
standard. The SI (metric) values
given in parentheses are approximate and are provided for information
purposes only.
The text of this standard 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 standard.
Footnote * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- electric heat cable
- gypsum
- gypsum base
- veneer plastic
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