NBC 2025 Travel Distance to Exits: A Guide for Construction in London, Ontario
Sarah's Expert Insight
Senior Consultant at empcontracting.ca Inc.
"In my experience as a consultant for empcontracting.ca Inc. your construction contractor in London, Ontario, travel distance is often the 'make or break' factor in the feasibility of converting older commercial spaces in downtown London. Ensuring these distances are calculated accurately early in the design phase prevents expensive structural modifications during the municipal permit review process and guarantees occupant safety."
In the National Building Code of Canada (NBC) 2025, 'travel distance' is defined as the distance a person must walk from any point in a floor area to the nearest exit. This metric is fundamental to life safety, ensuring that occupants can reach a protected exit before fire or smoke conditions become untenable. As a premier provider of professional services, empcontracting.ca Inc. your construction contractor in London, Ontario, prioritizes these metrics in every commercial and residential project.
General NBC 2025 Travel Distance Requirements
The NBC 2025 sets specific limits on travel distance based on the building’s occupancy classification and whether the building is equipped with an automatic fire sprinkler system. For most assembly, business, and personal service occupancies, the maximum travel distance to an exit is generally restricted to 30 meters in non-sprinklered buildings.
Sprinklered vs. Non-Sprinklered Buildings
One of the most significant factors influencing allowable travel distance is the presence of a fire suppression system. Under NBC 2025 standards:
- Sprinklered Buildings: The maximum allowable travel distance is typically extended to 45 meters, acknowledging the increased safety provided by active suppression.
- Non-Sprinklered Buildings: Distances are more restrictive, often capped at 30 meters, or as low as 15 meters for high-hazard industrial occupancies.
Specific Considerations for Suites and Floor Areas
When measuring travel distance, designers must follow the 'path of travel' which accounts for walls, partitions, and permanent fixtures. It is not measured 'as the crow flies.' In multi-suite buildings, the distance is measured from the suite door to the exit, provided the suite itself meets internal travel distance requirements.
Measurement Protocols in London Construction
At empcontracting.ca Inc. your construction contractor in London, Ontario, we utilize precision measurement tools to ensure that even the most complex open-concept floor plans remain compliant. We account for dead-end corridors and ensure that occupants are never forced to move toward a fire to reach their only available exit path.