101(1)An employer, a contractor and an owner of a place of employment shall each ensure that the floor, roof or other part of a building or structure that is a place of employment is not subjected to a load that exceeds the allowable unit stresses for the materials used as established in the “National Building Code of Canada, 1995”, issued by the Canadian Commission on Building and Fire Codes, National Research Council of Canada.

101(2)An employer, a contractor and an owner of a place of employment shall each provide, if requested by an officer, an engineer’s certification of the load that the floor, roof or other part of a building or structure that is a place of employment can support without exceeding the allowable unit stresses referred to in subsection (1).