Which statement is true concerning plumbing systems?

The statement regarding plumbing systems needing to be durable for the anticipated life of the building because most of the system is not readily accessible is indeed true. This highlights an important aspect of plumbing system design and maintenance. Since a significant portion of plumbing infrastructure is often hidden within walls or underground, access for repair or replacement can be challenging and costly. Therefore, using durable materials and ensuring a high level of workmanship during installation is crucial to minimize the likelihood of failures that would require extensive and disruptive work to rectify later.

Durability in plumbing materials, such as copper, PVC, or cross-linked polyethylene, ensures that pipes can withstand constant pressure, temperature fluctuations, and chemical exposure over many years. It also helps to prevent leaks, which are not only inconvenient but can also lead to water damage and mold issues, compounding maintenance challenges beyond mere accessibility.

In summary, the emphasis on durability directly correlates with the practical realities of plumbing system maintenance and the expectation of longevity, thus making this statement accurate in the context of plumbing systems in building operations.