Ontario Building Code - Section 1020

Table 9.23.4.3.-I 2024 Building Code Compendium 310 Division B – Part 9 Table 9.23.4.3-I Maximum Spans for Steel Beams Supporting a Roof and One Floor in Dwelling Units Where Beams Support Exterior Stud Walls With Brick Veneer – 3.0 kPa Specified Roof Design Snow Load Forming Part of Sentence 9.23.4.3.(1) Maximum Span, m Roof Live Load, kPa 3.0 Supported Roof Length, m (1) 2.4 3.6 4.8 6.0 Supported Floor Length, m (2) 2.4 3.6 2.4 3.6 2.4 3.6 2.4 3.6 Steel Beam Section W 150 × 22 W 150 × 30 W 150 × 37 2.64 2.97 3.23 2.53 2.85 3.10 2.48 2.78 3.03 2.39 2.69 2.93 2.35 2.64 2.87 2.28 2.56 2.79 2.24 2.52 2.74 2.18 2.45 2.67 W 200 × 27 W 200 × 31 W 200 × 36 W 200 × 42 3.40 3.63 3.73 3.96 3.26 3.48 3.58 3.79 3.19 3.40 3.50 3.71 3.08 3.28 3.38 3.58 3.02 3.22 3.31 3.51 2.93 3.13 3.21 3.41 2.88 3.08 3.16 3.35 2.81 3.00 3.08 3.26 W 250 × 33 W 250 × 39 W 250 × 49 4.21 4.51 4.76 4.03 4.32 4.56 3.94 4.23 4.46 3.81 4.08 4.30 3.74 4.00 4.22 3.62 3.88 4.10 3.57 3.82 4.03 3.47 3.72 3.93 W 310 × 39 W 310 × 45 W 310 × 52 W 310 × 60 5.06 5.33 5.66 5.81 4.85 5.11 5.43 5.57 4.74 4.99 5.31 5.45 4.58 4.82 5.12 5.26 4.49 4.73 5.03 5.16 4.36 4.59 4.88 5.01 4.29 4.51 4.80 4.93 4.18 4.40 4.67 4.80 W 360 × 33 W 360 × 39 W 360 × 45 W 360 × 51 W 360 × 57 5.01 5.38 5.71 5.99 6.26 4.81 5.15 5.47 5.74 6.00 4.70 5.04 5.35 5.61 5.87 4.54 4.86 5.16 5.42 5.66 4.45 4.77 5.07 5.32 5.56 4.32 4.63 4.92 5.16 5.39 4.25 4.56 4.84 5.08 5.31 4.14 4.44 4.71 4.94 5.17 Notes to Table 9.23.4.3-I: (1) Supported roof length means half the sum of the roof framing spans on both sides of the beam. (2) Supported floor length means half the sum of the floor framing spans on both sides of the beam.