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Q: What type and weight of compaction equipment can be used around fiberglass pipes, and at what cover levels?

A: When backfilling the pipe up to 0.6m from its crown, light portable plate compactors may be used with a weight not exceeding 120kg (or hand held types for small diameter/trenches). From 0.6m to 1m burial depth from pipe crown, roller compactors may be used with a maximum weight not exceeding 1000kg. Above 1m, a 5ton roller compactor may be used.

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