15.05 What are common problems with underground pipe systems?

Common problems with underground pipe systems

• Workmanship of joints causes re-work after testing
• Damage to piping from excavation or drilling
• Damage to piping during backfill, compaction, and surface paving
• Damage to piping from ground or surface loads or thermal changes
• Thermal expansion / contraction causes leaks at pipe joints and sump fittings
• Leakage at pipe penetrations to tank sumps