I am looking for some "rules of thumb" on vents for existing and planned utility trenches crossing landfill permit areas. I have a permit detail that appears to be a 12" wide trench off the side of the utility excavation filled with granular and capped with site soil. The vent is perf. 4" PVC with 2-90 deg. elbows to turn the vent pipe back toward the ground (PVC pipe is vertical from granular backfill to atmosphere. Anyone have some experience with spacing on new (embedment known) and existing (embedment unknown) lines? Would this application cause you to modify your normal pipe embedment? I have no prior spec on the granular, PVC pipe, or perf. size/spacing.
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Utility Venting
- Thread starter rosser
- Start date