Which statement best describes cross connections in firemain systems?

Which statement best describes cross connections in firemain systems?

• A. They measure water pressure
• B. They connect two main loops to route water around damaged sections
• C. They seal the system during maintenance
• D. They are used to store extra water

Answer: (B)

Cross connections in firemain systems provide alternate routes by tying together two main loops so water can flow from one loop to the other. This lets water be routed around a damaged or isolated section, ensuring supply to pumps, hydrants, and sprinklers remains available even if part of the main is out of service. The goal is redundancy and flexibility: you can keep the fire protection system functional while a damaged segment is isolated or under maintenance. They aren’t used to measure water pressure, seal the system during maintenance, or store extra water.

Cross connections in firemain systems provide alternate routes by tying together two main loops so water can flow from one loop to the other. This lets water be routed around a damaged or isolated section, ensuring supply to pumps, hydrants, and sprinklers remains available even if part of the main is out of service. The goal is redundancy and flexibility: you can keep the fire protection system functional while a damaged segment is isolated or under maintenance. They aren’t used to measure water pressure, seal the system during maintenance, or store extra water.