Wind Zone Map Roof

This downward imposed load on the home is also known as the snow load.

Wind zone map roof.

The north zone middle zone and the south zone are identified on the roof load zone map above. Anchorage in the 130 mph 58 m s wind zone shall be continuous from the roof to the foundation. 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. End zones zone 2 have a higher load than zone 1.

They represent the perimeter of the roof and account for approximately 15 of the roof surface. Building for a wind zone. Manufactured housing institute basic wind zone map. 780 cmr 1611 0 wind load 1611 1 wind load zones.

Interior zones zone 1 have the lowest load and account for about 80 of the roof surface. Simply put for the contiguous u s asce 7 05 has one wind speed map and it is based on allowable stress design. The north zone design live load equates to 40 pounds per square foot the middle zone equates to 30 pounds per square foot and the south zone equates to 20 pounds per square foot. The locations of wind load zones are shown in the figures 1611 1a 1611 1b 1611 1c maps.

Zone 1 consists of the counties of berkshire franklin hampshire and hampden. If you re thinking about buying a prefab home keep in mind that a home built to wind zone 1 cannot be placed by the manufacturer in zones 2 or 3 but a home built to wind zone 3 standards can be placed in lower wind zones. And zone 3 consists of the counties of essex middlesex suffolk norfolk plymouth.