What is the minimum design pressure for a standpipe system at the hydraulically most remote 2½-inch hose valve outlet?

In fire protection, the minimum design pressure for a standpipe system is crucial for ensuring adequate water supply to combat potential fires effectively. For a standpipe system, the requirement is to deliver a sufficient water supply to the most hydraulically remote outlet, which is typically a 2½-inch hose valve, which firefighters commonly use.

The National Fire Protection Association (NFPA) guidelines stipulate that the minimum design pressure at the most remote outlet should be no less than 100 psi. This pressure is important as it assures that when the hose is connected and water is being discharged, there remains enough pressure to effectively push the water through the hose and maintain a useful flow rate. An adequate pressure translates to the ability to deliver the right volume of water to combat fires and support firefighting operations.

Therefore, a design pressure of 100 psi is the standard in many contexts to ensure that during operation, firefighters can effectively manage and control the situation they are facing, which is crucial for safety and efficiency during an emergency response.