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.