What is the minimum hose connection size for standpipe systems in larger stages?

The minimum hose connection size for standpipe systems in larger stages is established to ensure adequate flow and pressure during firefighting operations. A 2.5-inch hose connection is standard in many jurisdictions because it provides a balance between maneuverability and the volume of water that can be delivered.

This size is designed to accommodate larger flow rates necessary for effectively combating fires in buildings with significant height or area, where high demand for water will be present.

Larger hose connections, such as 3 inches, may not be as commonly used in standard structures as the 2.5-inch connections due to factors like weight, ease of handling, and compatibility with typical firefighting equipment. Smaller sizes, such as 1.5 or 2 inches, do not meet the flow requirements needed in larger standpipe systems where more significant water delivery is necessary. Thus, the 2.5-inch size reflects industry standards and best practices for safety and efficacy in firefighting scenarios.