Roofing Wind Speed Map

Speed visual clues and damage effects.

Roofing wind speed map.

Minimum wind speed in known high wind areas. Please contact us with feedback. A dfcm roof history record is required on all roofing systems contractors responsibility. Direction of wind shown by smoke drift not by wind vanes.

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. Gutters removed for re roofing and must be reinstalled for inspection. Class f g and h are approved for wind speeds greater than 90 mph. Wind barely moves tree leaves.

Please note that a 1 90 or a 1a 90 rating does not provide the necessary wind speed requirements. 4 to 7 mph. 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. This is a beta release of the new atc hazards by location website.

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. This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows. Leaves rustle and small twigs. You only need to fill in either the city and state or the zip code.

Provide approved roof covering product manufacturer s data listing with fire classification per ibc 1505 and assembly details. Roof access or ladder must be provided for inspection. The current wind map shows the current wind speed and direction for the most recent hour. 1 to 3 mph.

Little if any movement with flags. The jet stream map shows today s high wind speed levels and jetstream directions. Simply put for the contiguous u s asce 7 05 has one wind speed map and it is based on allowable stress design. Wind felt on face.

Irc r905 2 4 1 addresses wind resistance requirements for asphalt shingles. Low wind areas and 110 m p h. Refer to local wind speed maps for other wind speed design requirements. All asphalt shingles including 3 tab shingles bearing the packaging label astm d 3161 class d are approved for 90 mph wind speeds.

Smoke rises vertically with little if any drift.