Roof Load Zone Map

Any areas between the wall corners that are not included within zone 5.

Roof load zone map.

A publication can be purchased called ground and roof snow loads for idaho by r. For example states like alaska and maine have some of the highest snow load requirements. Sheikh taheri published by the ui department of civil engineering 1986. Crane hook loads need not be combined with roof live load or with more than three fourths of the snow load or one half of the wind load.

Has the highest load. Soil classification and bearing table. And zone 3 consists of the counties of essex middlesex suffolk norfolk plymouth. I believe the current hud roof load map was established in 1974 but the map was based on the existing cfr code of federal regulations.

Used for roof overhang area along the perimeter of zone 3. Crane hook loads need not be combined with roof live load or with more than three fourths of the snow load or one half of the wind load. Roof load zone map each manufactured home must be designed according to the federal manufactured home construction and safety standards at 24 cfr 3280 commonly called the hud code. Other states like colorado parts of michigan and parts of wisconsin have a higher snow load than other parts of the u s.

Zone 1 consists of the counties of berkshire franklin hampshire and hampden. Egress windows for manufactured homes jan. 10 percent of least horizontal dimension or 0 4h whichever is smaller. Box 441022 moscow id 83844 1022.

Roof load zones vary depending on snow levels in different parts of the u s. Where flat roof snow loads exceed 30 psf 1 44 kn m 2 20 percent shall be combined with seismic loads. Square footing sizing table. Round footing sizing table.

Flat roof snow loads of 30 psf 1 44 kn m 2 or less need not be combined with seismic loads. 780 cmr 1611 0 wind load 1611 1 wind load zones. To request a copy send a check for 22 50 includes postage payable to department of civil engineering university of idaho p o. The locations of wind load zones are shown in the figures 1611 1a 1611 1b 1611 1c maps.

The hud code stipulates at 3280 305 c 3 that the home shall be designed and constructed to conform to one of three roof load zones. Zone 2 consists of the county of worcester. 2 the basic roof snow load factor c b shall be 0 8 except that for large roofs it shall be a 1 0 30 l c 2 for roofs with c w 1 0 and l c greater than or equal to 70 m or b 1 3 140 l c 2 for roofs with c w 0 75 or 0 5 and l c greater than or equal to 200 m where l c characteristic length of the upper or lower roof defined as 2w w l in metres. Snow load map ground load and roof load map per minnesota rules 1303 1700.

The hud roof load zone map was produced because of this confusion but did not change the map that cfr already used. I guess the cfr regulations were difficult to discern because of many revisions and ammendments. Frost depth map minnesota rules 1303 1600.