ITEM 704 – MASONRY UNITS

704.1 Clay or Shale Brick

Brick shall conform to the requirements of one of the following specifications:

Sewer Brick               -           AASHTO M 91, Grade SM

Sewer Brick               -           ASTM C 32, Grade SM

Building Brick           -           AASHTO M 114, Grade SW,

or ASTM C 62,Grade SW

The grade will be shown on the Plans or in the Special Provisions.

704.2 Concrete Brick

Concrete brick shall conform to the requirements of ASTM C 55, Grade A.

704.3 Concrete Masonry Blocks

Concrete masonry blocks may be rectangular or segmented and, when specified, shall have ends shaped to provide interlock at vertical joints.

            Solid blocks shall conform with the requirements of ASTM C 139 or ASTM C 145, grade as specified. Hollow blocks shall conform to the requirements of ASTM C 90, grade as specified.

Dimensions and tolerances shall be as individually specified on the Plans.