Final answer:
The necessary gauge pressure in water pipes for a typical residential setting is 40-45 psi (option A).
Step-by-step explanation:
The necessary gauge pressure in water pipes for a typical residential setting is 40-45 psi (option A).
Gauge pressure refers to the pressure measured above atmospheric pressure. In a residential setting, the typical gauge pressure for water pipes is around 40-45 psi, which is sufficient to provide a strong and steady flow of water for daily household needs.
It is important to note that the actual pressure in water pipes can vary depending on factors such as the elevation of the residence, the size of the pipe, and local regulations. However, 40-45 psi is a common range for residential water systems.