Roofing Wind Uplift Ratings

Mark gallant jun 22 2020.

Roofing wind uplift ratings. Damentals of wind uplift on low slope roofs. Duration series shingles are unrivaled by any other architectural shingles because they feature our patented surenail technology a technological breakthrough in shingle design. You only need to fill in either the city and state or the zip code. Because fm approvals requires a 2 1 safety factor roofs with field of roof uplift forces of 30 pounds per square foot are the maximum for 1 60 ratings and 37 5 pounds per square foot are the maximum for 1 75 ratings etc.

In this scenario our building. Roofs with field of roof uplift forces of 30 pounds per square foot are the maximum for 1 60 ratings and 37 5 pounds per square foot are the maximum for 1 75 ratings etc. The cost of a roof system is affected by the wind design but how are wind uplift ratings determined. The series highlights our popular duration shingles along with up to 7 other duration styles depending on where you live that feature unique performance characteristics.

Windspeedbyzip is a tool for architects engineers and builders to easily determine the 3 second gust basic windspeed figure 6 1 of asce 7 05 and now design wind speed per asce 7 10 maps for any location in the continental united states to determine the basic windspeed fill in the address below. Understanding wind uplift ratings for roofing. Asce 7 uplift ratings and warranties description. The 2020 atlantic hurricane season is off to the fastest start in recorded history and warmer ocean temperatures are expected to generate hurricanes and tropical storms with much more frequency and intensity.

The paper examines the use of ultimate strength design safety provisions in wind uplift design. In the industry there is a need to sort out the confusion between building codes uplift rated assemblies and warranties by explaining what each offers and how they should be considered. The numeric designation 60 75 90 etc is the calculated wind uplift pressures with a 2 1 margin of safety applied. Therefore a system listed as a 60 system can be utilized for projects where the roof field pressures are calculated to be 30 psf or less.

How are wind uplift ratings determined. With extreme wind events on the rise now is the time to. Wind speeds of 60 90 or 120 miles per hour. A balance should be achieved so that the cost to prevent blow off isn t unnecessarily high while the wind resistance capacity is sufficient for a roof to stay intact according to the appropriate wind related classification.