4.1.6.8.Snow Drift at Corners

(1) The drift loads on the lower level roof against the two faces of an outside corner of an upper level roof or roof
     obstruction shall be extended radially around the corner as shown in Figure 4.1.6.8.-A and may be taken as the least
     severe of the drift loads lying against the two faces of the corner.

     (2) The drift loads on the lower level roof against the two faces of an inside corner of an upper level roof or a parapet
     shall be calculated for each face and the higher of the two loads shall be applied where the drifts overlap as shown in
     Figure 4.1.6.8.-B.

                                                          Figure 4.1.6.8.-A
                                                    Snow Load at Outside Corner
                                                  Forming Part of Sentence 4.1.6.8.(1)

                                                        Figure 4.1.6.8.-B
                                                  Snow Load at Inside Corner
                                              Forming Part of Sentence 4.1.6.8.(2)

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.