To minimize the effects of expansion and contraction of PVC pipe in a trench, the pipe should be:

To minimize the effects of expansion and contraction of PVC pipe in a trench, snaking the pipe from one side to the other of the trench is the most effective method. This approach allows for added flexibility within the installation. It enables the pipe to expand and contract without as much risk of exerting pressure on joints or causing potential damage to the pipeline.

When installed in a snaked manner, the PVC pipe can accommodate thermal expansion more effectively. The curves created by snaking provide room for the pipe to move as temperatures fluctuate, thus reducing the stress that can accumulate at fixed points. If the pipe were laid in a rigid straight line, it would have limited room to expand, increasing the likelihood of breaks or leaks.

While keeping the pipe at a constant temperature might seem beneficial in theory, it is not practical in most installation scenarios. The buried environment will naturally experience temperature variations. Additionally, burying the pipe deeper than other pipes does not directly address the issues of expansion and contraction; instead, it concerns physical placement and accessibility.

By using the snaking method, contractors can effectively manage the conditions caused by temperature changes, promoting a longer-lasting and more reliable piping system.