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Normas ASTM – AENOR
ASTM C139-11

ASTM C139-11

Standard Specification for Concrete Masonry Units for Construction of Catch Basins and Manholes

Fecha:
2015-01-09 /Historical
Superseeded by:
Abstract:

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. All units shall be sound and free of cracks or other defects that interfere with the proper placing of the unit.

Scope:

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 which 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.

Keywords:
catch basins; concrete masonry units; manholes; masonry units
45,72
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