Grating Collar (GPC) Installation
Layout the GPC halves around the opening. Connect the halves by using the 2 – 3/8-16 x 1 ½” hex head bolts, washers, and 3/8” nuts. Slide the 4 J-bolts (L-bolts) in the 4 slots located on the bottom of the GPC (2 slots per half). Pulling up on the J-bolt (L-bolt), catch one of the grating bars with each bolt and tighten.
Layout the T5 pieces around the pipe penetration, and insert the 3/8” x 3 1/2” long bolts through the connecting holes. Thread them, but do not tighten.
Drop J-bolts (L-bolts) in the slots located on the bottom of each T5 piece. Catch one of the grating bars with the J-bolt (L-bolt) and tighten. Do this for all T5 pieces.
Once all the J-bolts (L-bolts) are securely fastened, tighten each of the 3/8” x 3 1/2” bolts in the connecting holes.