OHS Code

Published Date: July 01, 2009
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Part 23 Scaffolds and Temporary Work Platforms

Section 352 Temporary supporting structures

(1) An employer must ensure that a temporary supporting structure and every part of it, including metal scaffold components, are designed, constructed and braced in accordance with CSA Standard S269.1-1975 (R2003), Falsework for Construction Purposes.

(2) Subsection (3) applies to a temporary supporting structure unless the requirements of CSA Standard S269.1-1975 (R2003), Falsework for Construction Purposes are more stringent.

(3) An employer must ensure that a temporary supporting structure is certified by a professional engineer if the temporary supporting structure

(a) consists of shoring that is more than 3.7 metres in height,

(b) may transmit loads to another part of the structure that may not provide adequate support, or

(c) is a structure designed to act as a unit composed of parts so connected to one another that a load applied to any part of it may alter the stresses induced in other parts.

(4) A professional engineer certification for the purposes of subsection (3) must show

(a) the size and specifications of the temporary supporting structure, including the type and grade of all materials for its construction,

(b) the loads for which the temporary supporting structure is designed,

(c) the sequence of loading or unloading the temporary supporting structure, if the loading or unloading sequence is critical to its stability, and

(d) the shoring sequence, as necessary, after the temporary supporting structure is stripped.