Plumbing · IPC 2021 §306.2 / §306.3
Pipe Trench Bedding and Backfill
Trench section: continuous bearing, bell holes at joints, no blocks to grade, 6 in tamped lifts and 12 in of tamped earth over the pipe crown, with a long section at a joint.. Referenced to IPC 2021 §306.2 / §306.3.
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