How often shall the hydraulic design information sign for hydraulically designed systems be inspected?

• A. Monthly
• B. Annually
• C. Quarterly
• D. Bi-annually

Answer: (C)

The main idea here is keeping critical hydraulic design information current. The hydraulic design information sign shows the assumptions and limits used to determine the water supply and layout for a hydraulically designed system. Because changes to the building or system—like adding or removing sprinkler heads, changing pipe sizes, or altering design zones—can alter how the system performs, the sign needs regular checks to stay accurate and legible for maintenance personnel and responders.

Inspecting this sign on a quarterly basis strikes a practical balance. It’s frequent enough to catch any changes or wear that could affect the hydraulics, while not requiring the more burdensome monthly checks. Regular quarterly inspections help ensure that if there have been renovations, replacements, or adjustments, the sign is updated promptly so the information remains reliable during maintenance, testing, or an emergency.

Monthly would be overly frequent for a sign that doesn’t change daily, and annual or bi-annual checks risk letting outdated information go too long, potentially compromising system understanding and response.