Workers using outside scaffolding during the construction of multiple-unit housing lower than five stories are confronted with many risk factors for accidents, including falls from heights and excessive exertion associated with handling heavy loads in awkward postures. These loads may be a section of the scaffolding itself or objects handled while on the scaffolding.

This project first studied the construction process, and analyzed the safety of construction tasks at all stages of construction, excluding external finishing. The safety of scaffolding equipment which is, or should be, used was also analyzed. An ergonomic study of the assembly and disassembly of metal scaffolding and a structural study of five-point frames was performed, since this is the type of scaffolding most commonly used.

This project will allow recommendations to be formulated concerning desirable safety and ergonomic characteristics of scaffolding used on construction sites, work practices, and work organization.