Roofing Wind Speed Map

Little if any movement with flags.

Roofing wind speed map.

Class f g and h are approved for wind speeds greater than 90 mph. 1 to 3 mph. The jet stream map shows today s high wind speed levels and jetstream directions. Please note that a 1 90 or a 1a 90 rating does not provide the necessary wind speed requirements.

Leaves rustle and small twigs. Speed visual clues and damage effects. 4 to 7 mph. Wind felt on face.

Minimum wind speed in known high wind areas. All asphalt shingles including 3 tab shingles bearing the packaging label astm d 3161 class d are approved for 90 mph wind speeds. The current wind map shows the current wind speed and direction for the most recent hour. Direction of wind shown by smoke drift not by wind vanes.

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. 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 type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows.

Smoke rises vertically with little if any drift. Commercial reroof applications require plan submittal and plan review. Please contact us with feedback. Simply put for the contiguous u s asce 7 05 has one wind speed map and it is based on allowable stress design.

Gutters removed for re roofing and must be reinstalled for inspection. Roof access or ladder must be provided for inspection. Irc r905 2 4 1 addresses wind resistance requirements for asphalt shingles. 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.

Low wind areas and 110 m p h. Refer to local wind speed maps for other wind speed design requirements. This is a beta release of the new atc hazards by location website. 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.

A dfcm roof history record is required on all roofing systems contractors responsibility.