2022 Manitoba Workplace Safety and Health Act and Regulation

Temporary ramps 
30.8(1) An employer must ensure that a temporary ramp has a slope not
greater than one vertical to three horizontal.
30.8(2) When a temporary ramp has a slope greater than one vertical to
eight horizontal, the employer must ensure that cross cleats are
provided, with the cross cleats being
(a) provided at regular intervals not greater than 450 mm ;
(b) constructed of 25 x 50 mm (nominal) wood strips securely nailed
to a ramp, or other means providing equivalent resistance to
slipping; and
(c) kept clear of snow, ice and mud accumulations.

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Workplace Safety And Health Regulation
281
PART 31 
ROOF WORK
Application
31.1
This Part applies to every workplace where roofing material is
repaired, applied to or removed from a building or structure.
DIVISION 1 
GENERAL REQUIREMENTS
General requirements re roof work
31.2
Before any work begins on the roof of a building, an employer must
ensure that the structure of the building and its roof is evaluated to
determine if it is capable of withstanding the loads that will be or are
likely to be imposed on the roof, including the loads resulting from
the workers and the equipment and materials they use.
Safe work procedures
31.3
When roof work is done, an employer must
(a) develop and implement safe work procedures for roof work;
(b) train workers who do roof work in those safe work procedures;
and
(c) ensure that workers who do roof work comply with those safe
work procedures.
DIVISION 2
Repealed.
M.R. 147/2010

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Workplace Safety And Health Regulation
282