Which statement best describes Class 1 standpipes?

Which statement best describes Class 1 standpipes?

• A. They provide 2 1/2 inch hose connections
• B. They use 1 1/2 inch hose connections
• C. They provide 4 inch hose connections
• D. They do not connect to water supply

Answer: (A)

Class 1 standpipes are designed for firefighter use and provide 2 1/2-inch hose connections. This size matches the standard fire department hose and fittings, allowing the higher flow rates needed for suppression operations. They are connected to the building’s water supply, so water is available when a firefighter connects a hose to the outlet. The 1 1/2-inch size is associated with handlines for occupant use on some systems, not with Class 1 outlets. A 4-inch connection isn’t a standard standpipe outlet size, and claiming there’s no water supply connection would make the system nonfunctional.

Class 1 standpipes are designed for firefighter use and provide 2 1/2-inch hose connections. This size matches the standard fire department hose and fittings, allowing the higher flow rates needed for suppression operations. They are connected to the building’s water supply, so water is available when a firefighter connects a hose to the outlet. The 1 1/2-inch size is associated with handlines for occupant use on some systems, not with Class 1 outlets. A 4-inch connection isn’t a standard standpipe outlet size, and claiming there’s no water supply connection would make the system nonfunctional.