What is a critical consideration when installing underground plumbing?

When installing underground plumbing, proper bedding and backfilling to support pipes is essential because it directly affects the longevity and functionality of the plumbing system. Bedding refers to the material that is placed beneath the pipes to provide a stable base, preventing shifting or settling that could lead to misalignment or damage. Adequate bedding supports the pipes evenly, reducing stress points that could result in cracks or leaks over time.

Backfilling is equally important as it involves placing material around and above the pipes after they have been laid. This material must be carefully selected and compacted to ensure that it provides adequate support while also allowing for proper drainage and minimizing the risk of soil movement. If the backfill material is too loose or not compacted properly, it can settle, putting additional pressure on the pipes and potentially causing failures.

In contrast, considerations like using decorative pipes or ensuring easy access may overlook the functional requirements necessary for underground installations. Also, while durability is important, it does not solely depend on pipe material without proper installation practices.