Roofing Wind Speed Map

This is a beta release of the new atc hazards by location website.

Roofing wind speed map.

4 to 7 mph. Class f g and h are approved for wind speeds greater than 90 mph. 1 to 3 mph. Smoke rises vertically with little if any drift.

Simply put for the contiguous u s asce 7 05 has one wind speed map and it is based on allowable stress design. Commercial reroof applications require plan submittal and plan review. Refer to local wind speed maps for other wind speed design requirements. Little if any movement with flags.

Irc r905 2 4 1 addresses wind resistance requirements for asphalt shingles. Please note that a 1 90 or a 1a 90 rating does not provide the necessary wind speed requirements. A dfcm roof history record is required on all roofing systems contractors responsibility. The current wind map shows the current wind speed and direction for the most recent hour.

You only need to fill in either the city and state or the zip code. The jet stream map shows today s high wind speed levels and jetstream directions. Roof access or ladder must be provided for inspection. Provide approved roof covering product manufacturer s data listing with fire classification per ibc 1505 and assembly details.

Wind felt on face. 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. Direction of wind shown by smoke drift not by wind vanes. Wind barely moves tree leaves.

Gutters removed for re roofing and must be reinstalled for inspection. Low wind areas and 110 m p h. 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. Please contact us with feedback.

This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows. 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. Speed visual clues and damage effects.

Irc table r301 2 1 basic wind speed criteria 90 mph.