Roofing Wind Speed Map

Class f g and h are approved for wind speeds greater than 90 mph.

Roofing wind speed map.

Of buildings with mean roof height 60 feet new wind load criteria for attached canopies new guidance in the commentary for designing for tornadoes new risk category iv wind speed map 7th edition 2020 fbcb asce 7 16 figure 26 5 1d while the wind speed maps in asce 7 16 have been revised significantly for the nonhurricane. Wind felt on face. Refer to local wind speed maps for other wind speed design requirements. The jet stream map shows today s high wind speed levels and jetstream directions.

Smoke rises vertically with little if any drift. This is a beta release of the new atc hazards by location website. Provide approved roof covering product manufacturer s data listing with fire classification per ibc 1505 and assembly details. Leaves rustle and small twigs.

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. Roof access or ladder must be provided for inspection. A dfcm roof history record is required on all roofing systems contractors responsibility. Irc table r301 2 1 basic wind speed criteria 90 mph.

Simply put for the contiguous u s asce 7 05 has one wind speed map and it is based on allowable stress design. Speed visual clues and damage effects. Little if any movement with flags. Irc r905 2 4 1 addresses wind resistance requirements for asphalt shingles.

1 to 3 mph. Please contact us with feedback. Direction of wind shown by smoke drift not by wind vanes. Please note that a 1 90 or a 1a 90 rating does not provide the necessary wind speed requirements.

4 to 7 mph. Minimum wind speed in known high wind areas. Asce 7 10 has three wind maps based on risk category i risk category ii and risk categories iii and iv and they are based on strength design. Wind barely moves tree leaves.

Low wind areas and 110 m p h. Gutters removed for re roofing and must be reinstalled for inspection. You only need to fill in either the city and state or the zip code. All asphalt shingles including 3 tab shingles bearing the packaging label astm d 3161 class d are approved for 90 mph wind speeds.

Class a for winds up to 60 mph class d 90 mph class f 110 mph class g 120 mph and class h 150 mph.