Mobile Home Roof Load Zones

Roof loads are a downward vertical force on the home.

Mobile home roof load zones.

Wind load heating load roof load mobile home manufactured home foundation codes defects. The net uplift roof load must not be reduced by the dead load of the roof structure for the purposes of engineering design or structural load testing. This translates to about 70mph in basic wind speeds. 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 load zones vary depending on snow levels in different parts of the u s. Modifying a mobilehome or manufactured home. Alteration permit requirements and inspections. Other states like colorado parts of michigan and parts of wisconsin have a higher snow load than other parts of the u s.

In 3280 305 c it goes into further detail of what the requirements are for each zone. 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. Homes designed and constructed to a higher roof load zone can be installed in a lower roof load zone a home designed to a north zone can be installed in a middle or south roof load zone. Mobile home energy zones hvac new york is in thermal zone 3.

Before beginning any work on your mobilehome manufactured home commercial modular special purpose commercial modular or multifamily manufactured home you must submit an application for a permit form hcd mh 415. Zone 3 homes are built to withstand higher speed winds than zones 2 and 1 and are primarily found along the coastline. When a manufactured home is not designed to resist the wind loads for high wind areas zone ii or zone iii specified in paragraph c 1 ii of this section the manufactured home and each of its wind resisting parts and portions must be designed for horizontal wind loads of not less than 15 psf and a net uplift roof load of not less than 9 psf. 18 171 s e 2d 115 1969 upholding conviction for violation of an ahoskie ordinance limiting the location of mobile homes to mobile home parks.

Form hcd 415 can be submitted to the department via email to. However a south roof load zone home cannot be installed in either a middle or north roof load zone. 45 197 s e 2d 883 1973 upholding an order to remove a mobile home from a zoning district that did not permit individual units outside a park. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched.

Things get a bit more complicated for wind zones 2 and 3. The appropriate thermal zone value used in design is dependent on where the home will be initially installed.