What type of damage can backfill material cause to a pipe?

Prepare for the NGA 29/30 Repairing a Distribution Pipe Test. Use flashcards and multiple choice questions to enhance comprehension. Engage with hints and explanations for every question. Gear up for your exam success!

Backfill material can indeed cause crushing or abrasion to a pipe if not properly installed or if the material is too coarse or heavy. When pipes are buried underground, they are typically surrounded by backfill that helps to support them and maintain their position. However, if the backfill contains sharp rocks or is compacted too tightly, it can exert excessive pressure on the pipe. This pressure can lead to crushing, which compromises the structural integrity of the pipe, or abrasion, which can wear down the material over time, leading to leaks or failures.

Understanding the properties of backfill material and how it interacts with buried pipes is critical for ensuring the longevity and functionality of distribution systems. Proper techniques for backfilling, such as the use of suitable materials and adequate compaction methods, are essential to prevent damage to the pipes. This highlights the importance of careful planning and execution when working with underground piping systems.

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