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Block Specifications, Grades & Types
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Specifications |
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ASTM C-33: CONCRETE
AGGREGATES FOR C.M.U.
ASTM C-55: CONCRETE BUILDING
BRICK
ASTM C-90: HOLLOW
LOAD-BEARING UNITS
ASTM C-129: NON-LOAD-BEARING
UNITS
ASTM C-139: C.M.U. FOR CATCH
BASINS AND MANHOLES
ASTM C-140: LIGHTWEIGHT
BUILDING BLOCK
ASTM C-145: SOLID
LOAD-BEARING UNITS
ASTM C-331: LIGHTWEIGHT
AGGREGATES FOR C.M.U. |
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Grades |
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N - for general purpose use
such as in exterior walls below and
above grade that may or may not be
exposed to moisture penetration or
the weather and for interior walls
and backup
S - limited to above grade in
exterior walls with
weather-protective coatings and in
walls not exposed to weather |
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Types |
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I - MOISTURE CONTROLLED UNITS
II - NON-MOISTURE CONTROLLED UNITS |
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