OBC Building Structural Practice Questions - OBC Building Structural Examination Exam

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Under Division B, Table 9.23.14.3.A of the 2024 Ontario Building Code, what is the minimum thickness of plywood subfloor sheathing required for floor joists spaced at 400 mm (16 inches) o.c.?

15.5 mm 12.5 mm 18.5 mm 9.5 mm

Correct Answer:

15.5 mm

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