Lateral Stability
(1) Except as provided in Sentence (2), chimneys shall be braced in accordance with Subsection 4.3.2. to provide stability under wind loads.
(2) A chimney need not be laterally braced provided,
(a) no horizontal outside dimension is less than 400 mm, and
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(b) the chimney extends not more than 3.6 m above a roof or the masonry wall of which it forms a part.
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Article 9.21.4.5 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.
