When refilling a trench after installing PVC pipe, what should be avoided?

When refilling a trench after installing PVC pipe, high-speed backfilling should be avoided because it may cause damage to the newly installed pipe. PVC pipes are relatively flexible and can be susceptible to deformation or cracking if subjected to excessive force from rapid backfilling. Additionally, backfilling too quickly can lead to insufficient compaction of the soil around the pipe, which could result in future settling or shifting that might compromise the integrity of the pipeline.

The importance of careful backfilling lies in ensuring a well-supported and stable installation that can withstand the loads and stresses it will encounter after the trench is filled. Proper techniques involve gradual backfilling and possibly using hand tools to ensure that the soil around the pipe is compacted correctly without putting undue pressure on the pipe itself.