Section 7 1 D. Brick For Manholes
SECTION 7 SANITARY SEWER GRAVITY COLLECTION SYSTEM
D. Brick for Manholes:
Bricks for manhole construction shall be dense, hard burned, common clay brick conforming to ASTM Standard C62, “Building Brick (Solid Masonry Units made from Clay or Shale)”. All bricks shall have true edges and sharp corners and shall have been cured for at least 14 days before being placed.