4.5 No employee shall use a temporary structure unless
(a) he has authority from his employer to use it; and
(b) he has been trained and instructed in its safe and proper use.
4.6 (1) Before a temporary structure is used by an employee, a qualified person shall make a visual safety inspection of it.
(2) Where an inspection made in accordance with subsection (1) reveals a defect or condition that adversely affects the structural integrity of a temporary structure, no employee shall use the temporary structure until the defect or condition is remedied.
4.7 Where a vehicle or a pedestrian may come into contact with a temporary structure, a person shall be positioned at the base of the temporary structure or a barricade shall be installed around it to prevent any such contact.
Guardrails and Toe Boards
4.8 (1) Subject to section 3.10 of Part III, at every open edge of a platform of a temporary structure guardrails shall be installed and, subject to subsection 3.11(2) of Part III, where there is a likelihood that persons beneath the platform may be injured by objects falling from the platform, toe boards shall be installed.
(2) The guardrails and toe boards referred to in subsection (1) shall meet the standards set out in section 3.9 and subsection 3.11(1) of Part III.
Temporary Stairs, Ramps and Platforms
4.9 (1) Subject to subsection 4.10(3), temporary stairs, ramps and platforms shall be designed, constructed and maintained to support any load that is likely to be imposed on them and to allow safe passage of persons and equipment on them.
(2) Temporary stairs shall have
(a) uniform steps in the same flight;
(b) a slope not exceeding 1.2 in 1; and
(c) a hand-rail that is not less than 900 mm and not more than 1 100 mm above the stair level on open sides including landings.
(3) Temporary ramps and platforms shall be
(a) securely fastened in place;
(b) braced if necessary to ensure their stability; and
(c) provided with cleats or surfaced in a manner that provides a safe footing for employees.
4.10 (1) The erection, use, dismantling or removal of a scaffold shall be carried out by or under the supervision of a qualified person.
(2) Where a scaffold is erected on an uneven surface, it shall be provided with base plates that maintain its stability.
(3) Every scaffold shall be capable of supporting at least four times the load that is likely to be imposed on it.
(4) Every scaffold shall
(a) have a platform that is at least 500 mm wide and securely fastened in place;
(b) have a working surface that is even and horizontal; and
(c) be fitted with guardrails except on the side where the work to be performed would be hindered by the guardrail.
(5) The footings and supports of every scaffold shall be capable of carrying, without dangerous settling, all loads that are likely to be imposed on them.
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