ASTM WK71661

    Revision of C90 - 16a Standard Specification for Loadbearing Concrete Masonry Units

    (What is a Work Item?)

    Active Standard: C90 - 16a

    Developed by Subcommittee: C15.03 | Committee C15 | Contact Staff Manager



    WK71661


    Keywords

    absorption; compressive strength; concrete masonry units; equivalent web thickness; face shell; flange; lightweight; linear drying shrinkage; loadbearing; medium weight; normal weight; webs;;

    Rationale

    Currently, ASTM C90 has information on whether units are acceptable or not in several places. This can cause confusion as to what is acceptable or not for CMU, as well as how much of a shipment can be non-compliant before rejection (this limit is currently 5%). The changes proposed here are intended to move compliance information in the Compliance section of C90 to make the various provisions easier to understand and apply.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    01-29-2020

    Technical Contact:
    Edward Freyermuth

    Item:
    001

    Ballot:
    C15.03 (21-02)

    Status:
    Negative Votes Need Resolution