Roof Safety Wind

Note to the definition of high wind.

Roof safety wind.

Weather conditions such as wind and rain for example being blown over the edge or slipping on a wet roof surface trip hazards for example roof components and protrusions and overbalancing or losing grip on steep pitched or sloping roofs. Preparing for high winds. A high wind warning is issued when sustained winds of 40 mph or greater or gusts to 58 mph or greater are expected. Eliminating mitigating hazards related to high winds eliminate the hazards by stopping a work task that poses a hazard due to wind conditions i e roof work lifting operations.

Jobs involving aerial lifts cranes and sheathing materials must be properly evaluated with wind conditions. The occupational safety and health administration normally considers winds exceeding 64 4 kilometers per hour 40 miles per hour or 48 3 kilometers per hour 30 miles per hour if the work involves material handling as meeting this criteria unless the employer takes precautions to protect employees. Note to the definition of high wind. Warning line safety monitors.

1 3 5 design pressure coefficients for roof zones. High winds can cause downed trees and power lines flying debris and building collapses which may lead to power outages transportation disruptions damage to buildings and vehicles and injury or death. For buildings with low slope roofs less than 2 12 slope the wind speed at eave height is used. Roofing safety talks.

Weather conditions ice snow and wind are always a hazard on a roof if the shingles or other surfaces are slippery. Roofing safety all employers in the construction industry must have a safety program. Roof holes unguarded skylights and poorly covered holes. Exterior egress beyond ladders staff should exercise situation awareness when accessing the roof via hatches elevators penthouse doors scaffolding or power equipment such as scissor lifts and aerial work platforms says brad richardson a certified safety professional and director of environmental health and safety for d.

Roof design wind pressures are determined using the wind speeds at the mean roof height of the building i e average of the eave and ridge heights.