Friction Between Shoe - Sole Materials and Roofing Boards

摘要

Kinetic frictions of boot-sole materials upon roofing boards were determined by the horizontal sliding method. Kinetic frictions of several kinds of roofing boards on roofing boards were also found. The friction was expressed as coefficient of friction and as angle of response. A statistical analysis shows that there are significant differences between means in terms of sole materials and surface treatments of boards. Neoprene or rubber soles are the safest available for workers on sloping wooden roofs.