ASTM C27 SUBCOMMITTEE BALLOTS BLOCK RETAINING WALL STANDARD

摘要

ASTM Committee C27.20 on Architectural and Structural Products continues work on WK38192-New Specification for Wet-cast Precast Modular Block Retaining Wall Units. It provides guidance on materials, physical requirements, permissible variations in dimensions, finish and appearance, unit form stripping, shipping and handling, sampling and testing, and compliance of unreinforced wet-cast precast modular block retaining wall units, according to the National Concrete Masonry Association.