PART V GENERAL HEALTH AND SAFETY REQUIREMENTS — Guardrails
28
(1) Guardrails shall be installed where an open-sided floor, working platform, runway, walkway or balcony is over 1.22 metres above the existing floor or ground level.
28(2)
Detour guardrails shall be installed where a stairway ends in direct proximity to dangerous traffic or other hazards.
28(3)
An employer shall ensure that a guardrail is secured so that it cannot move in any direction if it is struck or if a point on it comes in contact with a worker, materials or equipment.
28(4)
Guardrails shall be installed on walkways over open tanks containing harmful substances or over open tanks 1.22 metres or more in depth.
28(5)
Walkways and platforms installed over machinery and work areas shall be equipped with toe boards at least 10 centimetres high along all sides of the walkway or platform.
28(6)
A guard rail shall have a top rail located at least .9 metres but not more than 1.1 metres above the working surface and an intermediate rail located midway between the top rail and the working surface.
Not legal advice. Verify the cited article against the signed agreement.