Ontario Building Code Steel Beam Spans: 2024 Table 9.23.4.3.-G for London Contractors
Sarah's Expert Insight
OBC Compliance Specialist
"Understanding Table 9.23.4.3.-G is vital for residential projects in London and Muskoka where brick veneer and 2.5 kPa snow loads are common design parameters. At empcontracting.ca Inc., your construction contractor in London, Ontario, we utilize these precise calculations to ensure structural safety and compliance, preventing long-term floor sag or masonry cracking in multi-story dwellings."
Understanding Steel Beam Maximum Spans under 2.5 kPa Snow Loads
For residential construction projects in Ontario, adhering to Table 9.23.4.3.-G of the 2024 Building Code Compendium is essential for structural integrity. This section dictates the maximum spans for steel beams that support both a roof and one floor in dwelling units, specifically where the beams support exterior stud walls with brick veneer.
Key Structural Parameters
The calculations within this table are based on a 2.5 kPa specified roof design snow load. When planning your build with empcontracting.ca Inc. your construction contractor in London, Ontario, we consider two primary variables:
- Supported Roof Length: Half the sum of the roof framing spans on both sides of the beam.
- Supported Floor Length: Half the sum of the floor framing spans on both sides of the beam.
Maximum Spans for W-Section Steel Beams
Below are typical maximum spans (in meters) for common steel beam sections based on a supported roof length of 2.4m to 6.0m:
W150 and W200 Series
- W 150 × 22: Spans range from 2.71m down to 2.26m depending on floor and roof length.
- W 200 × 42: Offers a more robust span capacity, reaching up to 4.05m.
W250, W310, and W360 Series
- W 250 × 49: Capable of spans up to 4.87m under specific loading conditions.
- W 310 × 60: One of the strongest options in this category, allowing spans up to 5.96m.
- W 360 × 57: Provides maximum architectural flexibility with spans reaching up to 6.42m.
Professional Compliance in Ontario Construction
Ensuring your project meets these Part 9 requirements is critical for passing inspections in municipalities like London, Oakville, and Muskoka. For expert implementation of these engineering standards, trust empcontracting.ca Inc. your construction contractor in London, Ontario to handle your structural steel requirements.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.