2022 Manitoba Workplace Safety and Health Act and Regulation

Employer’s obligation before demolition begins
33.4(1) An employer must ensure that before demolition work begins,
(a) the following are removed from the building or structure, or
part of the building or structure, being demolished:
(i) glass, metal cornices or other material that may shatter,
(ii) hazardous substances, including asbestos,
(iii) any tanks, wells, piping systems, flammable or explosive
materials or gas cylinders;

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Workplace Safety And Health Regulation
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(b) where anything mentioned in
(i) subclause (a)(ii) cannot be removed, it is subjected to
control measures in accordance with Part 36 (Chemical and
Biological Substances) and Part 37 (Asbestos), and
(ii) subclause (a)(iii) cannot be removed, it is made safe;
(c) authorization from the authority having jurisdiction has been
obtained to disconnect any utility or service at the demolition
site, the utility or service has been disconnected, and written
confirmation of the authorized disconnection is available at the
demolition site; and
(d) the demolition site is
(i) free of unauthorized persons, and
(ii) appropriately barricaded to prevent access by unauthorized
persons.
33.4(2) An employer must ensure that a competent person
(a) inspects the demolition site and confirms that subsection (1) has
been complied with before proceeding with demolition work;
and
(b) supervises the demolition work at all times when demolition
work is in progress.
Notice to owners of affected property
33.5 
An employer must
(a) provide notice in writing of the intended demolition work to
the owner of any building, structure or property connected or
adjacent to the demolition site, or that may be affected by the
demolition; and
(b) ensure that the owner has adequate time to ensure the safety
of any persons in the building or structure or on the property.