ASTM WK69983

    Revision of C629 / C629M - 15 Standard Specification for Slate Dimension Stone

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    Active Standard: C629 / C629M - 15

    Developed by Subcommittee: C18.03 | Committee C18 | Contact Staff Manager



    WK69983


    Keywords

    acid resistance; carbonaceous ribbons; slate;;

    Rationale

    The standard has been produced in its entirety to provide context for the proposed changes. The subject of the current ballot is restricted to the proposed changes to Table 1, and Section 5.1 as noted herein. These edits are proposed to establish consistency with how this information is presented across the standard specifications for each natural stone material based on recent modifications to ASTM C615/615M Standard Specification for Granite Dimension Stone. This ballot proposes to add footnotes to Table 1. Footnote C references the basis for establishing the minimum compressive strength, flexural strength, and modulus of rupture. Footnote D references the basis for establishing acceptable performance of a stone that does not strictly comply with Table 1. C629 Section 1.1 makes reference to C1528 for the appropriate selection and use of slate dimension stone, and C1528 Section 62 provides context for the material specification standards, including performing an engineering evaluation as a means to validate materials that do not meet the values listed in C629 for use in a specific application. Section 5.1 will be modified to reference Footnote D within Table 1 based on the modifications to Table 1 proposed herein.

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    Work Item Status

    Date Initiated:
    09-20-2019

    Technical Contact:
    Jeffrey Kerr

    Item:
    004

    Ballot:
    C18 (19-07)

    Status:
    Negative Votes Need Resolution