NBC 2025 Ramp Design and Slope Requirements: A Guide for London, Ontario
Sarah's Expert Insight
Senior Consultant at empcontracting.ca Inc.
"In London, Ontario, our severe seasonal freeze-thaw cycles make slip-resistant surfaces and proper drainage for ramps critical to long-term safety and NBC 2025 compliance. At empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure every ramp project balances these strict technical slope standards with the local environmental durability needed to protect homeowners and businesses alike."
Understanding the National Building Code (NBC) 2025 requirements for ramps is essential for ensuring universal accessibility and safety in any commercial or residential project. At empcontracting.ca Inc. your construction contractor in London, Ontario, we prioritize precision in every slope and landing we build to ensure full compliance with the latest regulations.
NBC 2025 Maximum Ramp Slope Standards
The NBC 2025 maintains strict ratios to ensure that manual wheelchairs and individuals with limited mobility can navigate inclines safely. For most accessible routes, the maximum allowed slope is 1 in 12 (8.3%). Steeper slopes are strictly prohibited for primary access routes to ensure the physical safety and comfort of all users.
Minimum Width and Clearance
Ramps must provide a clear width that allows for easy passage without obstruction. Generally, a minimum width of 1100 mm is required for ramps serving public buildings, though specific residential applications may vary depending on occupancy. This clearance ensures that handrails do not impede the path of travel for mobility devices.
Landings and Directional Changes
Landings are a critical safety feature under the NBC 2025. They are mandatory at the top and bottom of every ramp, at intervals of no more than 9 meters for a 1:12 slope, and at any point where the ramp changes direction. These landings must provide a level area of at least 1500 mm by 1500 mm to allow for a safe turning radius.
Handrail and Guard Requirements
To meet NBC 2025 standards, handrails must be installed on both sides of a ramp if the vertical rise exceeds 150 mm or the horizontal length exceeds 2000 mm. Handrails must be continuous, ergonomically shaped for a firm grip, and mounted between 865 mm and 1070 mm above the ramp surface. Additionally, guards are required where there is a drop-off of more than 600 mm adjacent to the ramp.
Slip Resistance and Surface Materials
All ramp surfaces must be stable, firm, and slip-resistant. In the London, Ontario climate, choosing the right materials to handle ice and rain is vital for maintaining compliance and safety throughout the year. At empcontracting.ca Inc. your construction contractor in London, Ontario, we specialize in high-traction finishes that exceed code requirements.