OHS Code

Published Date: July 01, 2009
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Part 30 Demolition

Section 421 Dismantling buildings

(1) An employer must ensure that if a building or structure is being demolished,

(a) all glass and windows on the exterior walls of the building or structure and adjacent to a public walkway are removed before demolition begins,

(b) if the demolition may affect the stability of an adjoining building or structure, the demolition is carried out in accordance with procedures certified by a professional engineer that safeguard the stability of the adjoining structure,

(c) if tensioned steel cables or bars are known to be in the building or structure, demolition procedures are certified and supervised by a professional engineer,

(d) if there are workers in the building or structure during the demolition, the demolition is performed floor by floor from the top down,

(e) steel structures are dismantled column length by column length and tier by tier,

(f) a structural member that is being removed

(i) is not under stress, other than its own weight, and

(ii) is secured or supported to prevent unintentional movement, and

(g) unless it is being demolished at the time, a wall or other part of the building or structure is not left unstable or in danger of collapsing unintentionally.

(2) A person must not allow materials or debris to accumulate in a building or structure being demolished if the accumulation could result in the collapse of a part of the building or structure.