Final answer:
A hydrostatic test of sprinklers and stand pipes may be done every 3 to 5 years depending on structural integrity, local codes, and location.
Step-by-step explanation:
The hydrostatic test of sprinklers and standpipes may be done every 3 to 5 years depending on various factors:
- Structural integrity: The test ensures that the sprinklers and standpipes are in good condition and free from any damage or leaks.
- Local codes: The timing of the test may be determined by local regulations or building codes that require periodic testing for safety compliance.
- Location: Different regions may have different requirements based on climate or other environmental factors.