1.1 This specification covers solid precast segmental concrete masonry units made from hydraulic cement, water, and suitable mineral aggregates, with or without the inclusion of other materials. The units are intended for use in the construction of catch basins and manholes.
1.2 The text of this standard referenced notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM C139-22 Referenced Document
ASTM C1157/C1157M Standard Performance Specification for Hydraulic Cement*, 2023-09-01 Update
ASTM C1232 Standard Terminology for Masonry*, 2023-12-15 Update
ASTM C1240 Standard Specification for Silica Fume Used in Cementitious Mixtures
ASTM C140/C140M Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units*, 2023-12-01 Update