Water supply lines should be laid

Water supply lines should be laid

• A. In rocky ground
• B. In clay
• C. In soft, clean soil and sand
• D. On paved surfaces

Answer: (C)

The main idea is choosing a suitable bedding and backfill to protect the pipe and keep it properly supported. Soft, clean soil and sand create a smooth, uniform bed that supports the pipe evenly and allows the surrounding material to be compacted around it without creating sharp point loads. This helps prevent pipe deformation, puncture, or future settlement and makes digging or repairs easier later. In contrast, rocky ground contains hard or sharp stones that can crush or nick the pipe and create irregular support; clay soils can swell or shrink with moisture, moving the pipe; and laying pipe on paved surfaces is impractical and can transfer loads to the pipe, damage the pavement, and complicate backfilling.

The main idea is choosing a suitable bedding and backfill to protect the pipe and keep it properly supported. Soft, clean soil and sand create a smooth, uniform bed that supports the pipe evenly and allows the surrounding material to be compacted around it without creating sharp point loads. This helps prevent pipe deformation, puncture, or future settlement and makes digging or repairs easier later. In contrast, rocky ground contains hard or sharp stones that can crush or nick the pipe and create irregular support; clay soils can swell or shrink with moisture, moving the pipe; and laying pipe on paved surfaces is impractical and can transfer loads to the pipe, damage the pavement, and complicate backfilling.