Floor Load Width

2 grade of douglas fir are indicated below.

Floor load width.

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. Required size for a given span. 1 psf lb f ft 2 47 88 n m 2. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.

Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. If you have any questions you should contact an engineer. 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. The dead load on a floor is determined by the materials used in the floor s construction.

But larger is not always better when builders are constructing a home or adding a room addition. Loads should be determined in accordance with this chapter. Live load is weight of furniture wind snow and more. Maximum floor joist span for no.

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. This chart is for basic reference only. Dead load is the weight of the structure and any fixed items. This is referred to as the floor load width flw.

However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. Live load represents the weight of furniture snow etc. In order to use the table select the floor load width from among the top line of the table in this case 1200mm 1800mm etc our example is 2m 2000mm and use the corresponding column 2400mm below to select the appropriate size of bearer from the list on the left and the post spacing measurement to match from within the column. Spacing should be interpreted as the centre to centre distance between adjacent parallel members.

Dead load weight of structure and fixed loads 10 lbs ft 2. Maximum span of 2x6 floor joist. Where the bearer supports load bearing walls the type of roof covering also needs to be determined.