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ASTM C318/C318M-00(2010)

Historical Reaffirmation

Standard Specification for Gypsum Formboard

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1.1 This specification covers the minimum requirements for gypsum formboard designed for use as a permanent form for poured-in-place reinforced gypsum concrete roof decks.

1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.

1.3 The text of this standard references notes which provide explanatory material. These notes shall not be considered requirements of the standard.


This specification covers the minimum requirements for gypsum formboard designed for use as a permanent form for poured-in-place reinforced gypsum concrete roof decks. Gypsum formboard shall consist of a noncombustible core, essentially gypsum, either mineral or organic, synthetic or natural. The face surface shall be specifically treated to resist fungus growth. Specimens shall be subjected to the following test methods: flexural strength; humidified deflection; core, end, and edge hardness; and resistance to fungi. Specimens shall be tested to determine thickness, width, length, end squareness, and edges and ends. The surfaces of gypsum formboard shall be true and free from imperfections that would render it unfit for use with or without decoration.


SDO ASTM: ASTM International
Document Number C318
Publication Date Oct. 1, 2010
Language en - English
Page Count 2
Revision Level 00(2010)
Supercedes
Committee C11.01
Publish Date Document Id Type View
Oct. 1, 2024 C0318_C0318M-24 Revision
Oct. 1, 2013 C0318_C0318M-13 Revision
July 10, 2000 C0318_C0318M-00E01 Revision
July 10, 2000 C0318_C0318M-00 Revision
Oct. 1, 2018 C0318_C0318M-13R18 Reaffirmation
Oct. 1, 2010 C0318_C0318M-00R10 Reaffirmation
May 1, 2005 C0318_C0318M-00R05 Reaffirmation