The Toronto Transit Commission Ensures Safe Access to Rooftop Units
Toronto Transit Commission
ensuring roof safety & compliance
- Platforms, stairs and guardrails designed to comply with all applicable loads, including OBC Part 3, OBC Part 4 and OSHA Reg. 851 S.14.
- Platforms and stairs designed for a concentrated live load capacity of 1.3 kN and distributed live load capacity of 1.5 kPa.
- Guardrails designed for a concentrated live load capacity of 1.0kN, compliant with OBC 22.214.171.124(b).
- Total dead load of system not to exceed 0.5 kPa.
- Dead load (0.5 kPa) plus live load (1.5 kPa) of platforms, guardrails, and stairs onto existing roof not to exceed 2.0 kPa, unfactored.
- Dead load plus live load (2.0 kPa) of platforms, stairs, and guardrails not to exceed a maximum concentrated load onto the existing roof of 1.3kN. Achieved by having support posts on 600mm centres, max.
- Customization capabilities as some of the rooftop units are not standard in size.
- Modular in design and installation.
- Lightweight while still being robust to support the load requirements.
- A permanent walkway, guardrail, platform and crossover solution.
- Made of long-lasting anti-corrosive material.
- Must meet a strict and short delivery time.
Making Roof Safety & Compliance Easy
After a review of the rooftop access points and those rooftop units that require routine maintenance by the TTC. Skyline Group proposed a safety solution that ensured a safe walkway, including a guardrail system, manufactured in aluminum. This reduced the chance of a slip during the winter months, while offering a safe and secure platform to work from. The high-quality aluminum also offered corrosion protection for 10+ years. A crossover solution helped the facilities maintenance team safely walk and work at heights while on the roof. With the height safety solution being modular and made of aluminum, the general contractor was able to transport the units with ease. The savings in labor alone reduced the budget requirements for installation, enabling the opportunity for the general contractor to work on other rooftop-related projects for the TTC. This customized roof safety solution was not only under budget, but met strict deadlines.