Work Item
ASTM WK87404

Revision of C90-22 Standard Specification for Loadbearing Concrete Masonry Units


A withdrawn negative on a previous balloted criticized the language currently used in 5.1 that units must not have defects ‘that significantly impair the strength and permanence of construction.’ The concern is that it is not enforceable when using language such as ‘significantly’. The task group agreed and felt that current requirements for strength and other physical properties, coupled with allowable limits on defects in Section 9 on Compliance makes the language in Section 5.1 unnecessary.
This ballot item proposes to remove the second sentence in 5.1 that refers to ‘significantly impair’.
Note that the compliance requirements in Section 9 are provided in this ballot for information as it is referenced in this rationale. No changes are proposed for this section.


Developed by Subcommittee: C15.03

Committee: C15

Staff Manager: Krista Robbins

Work Item Status

Date Initiated: 08-09-2023

Technical Contact: Nicholas Lang

Item: 000