CSLB Class B General Contractor's License Practice Exam

What could happen if the standing pressure in a plumbing system is too high?

1. Pipes may burst due to excess pressure

2. Water pressure will remain constant

3. It will improve water flow

4. Faucets will function more effectively

The correct answer is: Pipes may burst due to excess pressure

When the standing pressure in a plumbing system is too high, the risk of pipes bursting becomes a significant concern. This is because each pipe has a maximum pressure rating it can withstand. If the pressure exceeds this limit, the material of the pipe can be compromised, leading to ruptures or leaks. High standing pressure can create stress on joints and fittings, which may also fail under excessive force. In contrast, having water pressure that remains constant would not be related to high standing pressure causing damage; rather, it implies a stable system. Improving water flow or enabling faucets to function more effectively typically occurs at optimal pressure levels, not excessive ones. Hence, when managing a plumbing system, it is crucial to ensure that the pressure is maintained within safe limits to prevent damage to the system overall.