Roofing Wind Uplift Ratings

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.

Roofing wind uplift ratings.

Mark gallant jun 22 2020. 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. These ratings actually apply to wind uplift pressure in pounds per square foot and are not directly related to wind speeds. The use of wind pressure tables included in the monograph which allow the selection of wind pressure values without detailed calculations and converting them to fm global wind uplift ratings is explained.

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. Duration series shingles are unrivaled by any other architectural shingles because they feature our patented surenail technology a technological breakthrough in shingle design. 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. Damentals of wind uplift on low slope roofs.

How are wind uplift ratings determined. In this scenario our building. The paper examines the use of ultimate strength design safety provisions in wind uplift design. Wind speeds of 60 90 or 120 miles per hour.

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. Understanding wind uplift ratings for roofing. With extreme wind events on the rise now is the time to. Asce 7 uplift ratings and warranties description.

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. The numeric designation 60 75 90 etc is the calculated wind uplift pressures with a 2 1 margin of safety applied. Sometimes a roofing designer will assume that a design wind speed requirement of 90 mph then the roof system rating will be 1 90. The cost of a roof system is affected by the wind design but how are wind uplift ratings determined.