Douglas Fir Floor Joist Span Tables

2019 california building code section 2308.

Douglas fir floor joist span tables.

Maximum floor joist span for no. If this is the case with your structure use the floor. Live load is weight of furniture wind snow and more. 2 grade of douglas fir are indicated below.

Dead load weight of structure and fixed loads 10 lbs ft 2. Span tables for douglas fir larch lumber. Rafter spans for southern yellow pine douglas fir and eastern spruce. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce.

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. The table excerpt above is simply a sample and may not be valid for your region. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4.

In hem fir either a no 1 2x10 or a no. Douglas fir larch lumber species no. Rafters l 240 ceiling joists l 240 floor joists l 360 table 2308 7 2 2 table 2308 7 1 1 table 2308 4 2 1 2. The table below shows the maximum span for a floor joist with the following designations.

In douglas fir larch either a no. 1 ft 0 3048 m. 1 psf lb f ft 2 47 88 n m 2. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.

2 2x10 or a no. 2 2x12 would work.