Floor Load Width

The dead load on a floor is determined by the materials used in the floor s construction.

Floor load width.

Whether the bearers are supporting load bearing walls or only floor loads the area of the floor supported by an individual bearer must be determined. Live load represents the weight of furniture snow etc. Maximum span of 2x6 floor joist. The extra two inches of vertical distance when a floor is framed with 2 x 10 joists rather than 2 x 12s can be quite important for example.

1 ft 0 3048 m. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot. 1 psf lb f ft 2 47 88 n m 2.

Where the bearer supports load bearing walls the type of roof covering also needs to be determined. 2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. Dead load weight of structure and fixed loads 10 lbs ft 2. Loads should be determined in accordance with this chapter.

Dead load is the weight of the structure and any fixed items. If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot. Maximum floor joist span for no. If you have any questions you should contact an engineer.

This chart is for basic reference only. 2 grade of douglas fir are indicated below. Required size for a given span. But larger is not always better when builders are constructing a home or adding a room addition.

Common sense tells you that large floor joists can carry more load and spacing joists closer together also increases the load bearing capacity of a floor. This is referred to as the floor load width flw. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below.