NBC 2025 Guide: Standpipe and Hose System Layout Standards for London, Ontario Builders
Sarah's Expert Insight
Senior Consultant at empcontracting.ca Inc.
"With the NBC 2025 updates focusing on enhanced hydraulic performance, getting the standpipe layout right during the design phase is crucial for avoiding costly retrofits in multi-storey projects. At empcontracting.ca Inc. your construction contractor in London, Ontario, we prioritize these life safety systems to ensure full compliance with local London Fire Department accessibility standards and the latest fire protection engineering codes."
Understanding Standpipe and Hose System Requirements under NBC 2025
In the 2025 National Building Code (NBC), standpipe and hose systems remain a fundamental pillar of fire protection for high-rise and large-floor-area buildings. These systems provide the necessary water supply for fire departments and building occupants to combat fire stages effectively before full suppression system activation.
Classifications of Standpipe Systems
The NBC 2025 continues to categorize systems into three distinct classes based on their intended use:
- Class I Systems: Designed for fire department use, featuring 65 mm (2.5 inch) hose connections in strategic locations like exit stairwells.
- Class II Systems: Intended for use by trained building occupants, featuring 40 mm (1.5 inch) hose stations.
- Class III Systems: A hybrid system providing both 40 mm and 65 mm connections for both occupant and fire department use.
Layout and Coverage Requirements
Standard layouts must ensure that every portion of each floor level is within reach of a hose stream. Under NBC 2025, the maximum distance from a standpipe connection to the most remote portion of the floor area is strictly regulated, typically requiring the hose to reach within 9 meters of any point when using a 30-meter hose. For builders in London, Ontario, these layouts must be coordinated with the architectural design to ensure fire-rated cabinets do not obstruct egress paths.
Interconnection and Water Supply
All standpipe risers must be interconnected at the bottom to ensure redundancy. In multi-zone systems common in high-rise developments, pressure-regulating valves are mandatory to prevent excessive nozzle pressure that could endanger firefighters or damage equipment. The NBC 2025 emphasizes seismic bracing for these systems, particularly in regions showing increased seismic risk assessments.
Compliance for London, Ontario Construction
Working with empcontracting.ca Inc. your construction contractor in London, Ontario, ensures that your standpipe layout adheres to both the NBC 2025 and the specific water pressure profiles provided by London’s municipal infrastructure. Correct layout planning during the structural phase prevents the need for invasive and expensive piping reroutes during the finishing stages.