In wildland fire structural protection, what is the maximum allowed hose lay length?

• A. 100 feet
• B. 150 feet
• C. 200 feet
• D. 300 feet

Answer: (C)

Maintaining sufficient nozzle pressure is essential for effective wildland-urban interface protection. The hose lay length directly affects friction loss along the line—the longer the lay, the more pressure is lost before water reaches the nozzle. To keep the attacker line capable of delivering the needed flow and knockdown power, a practical upper limit is placed on how far a single lay can run. In standard practice for wildland structural protection, that limit is 200 feet. This distance balances reach with the ability to maintain the required pressure at the nozzle using typical pump settings.

If a longer reach is necessary, water supply must be brought closer or additional lines relayed so each lay stays within the 200-foot limit. Choices shorter than 200 feet are workable but not the maximum, while a longer option would risk insufficient nozzle pressure and unreliable water delivery.