Roof Wind Zone

Homes built for zone 1 should be able to resist horizontal wind loads of no less than 15 psf and upward roof lifting loads of no less than 9 psf.

Roof wind zone.

This zone accounts for approximately 80 of the roof surface represented in the interior zones of the roof. Zone 3 designed to resist wind speeds up to 110 mph. Roof loads are a downward vertical force on the home. Zone 1 designed for the interior of the country where hurricanes are not expected.

When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. Has the lowest load. In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. Per asce 7 10 buildings are composed of 5 different zones depending on the wind loading they are subjected to.

End zones zone 2 have a higher load than zone 1. Here is a breakdown of what each wind zone rating means. Interior zones zone 1 have the lowest load and account for about 80 of the roof surface. Corner zones zone 3 have the highest load.

Zone 2 designed to resist wind speeds up to100 mph. These zones are defined as follows. Things get a bit more complicated for wind zones 2 and 3. This downward imposed load on the home is also known as the snow load.

The roof zone describes the amount of wind load that is subjected to the roof.