ASTM C318 / C318M - 13

    Standard Specification for Gypsum Formboard

    Active Standard ASTM C318 / C318M | Developed by Subcommittee: C11.01

    Book of Standards Volume: 04.01


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    Abstract

    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.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C11 Terminology Relating to Gypsum and Related Building Materials and Systems

    C22 Specification for Gypsum

    C473 Test Methods for Physical Testing of Gypsum Panel Products

    C1264 Specification for Sampling, Inspection, Rejection, Certification, Packaging, Marking, Shipping, Handling, and Storage of Gypsum Panel Products

    G21 Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi


    ICS Code

    ICS Number Code 91.100.40 (Products in fibre-reinforced cement)

    UNSPSC Code

    UNSPSC Code 30161500(Wall finishing materials)


    Referencing This Standard

    DOI: 10.1520/C0318_C0318M

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C318 / C318M-13, Standard Specification for Gypsum Formboard, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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