Douglas Fir Floor Joist Span Tables

For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4.

Douglas fir floor joist span tables.

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. Dead load weight of structure and fixed loads 10 lbs ft 2. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce. In douglas fir larch either a no.

2 2x12 would work. The table excerpt above is simply a sample and may not be valid for your region. If this is the case with your structure use the floor. Live load is weight of furniture wind snow and more.

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. Span tables for douglas fir larch lumber. 2019 residential building code r502 r802. For this use the tables in design values for joists and rafters.

2019 california building code section 2308. The table below shows the maximum span for a floor joist with the following designations. 2 lumber grade all joists are bridged sample floor joist span table. 2 grade of douglas fir are indicated below.

Maximum floor joist span for no. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. Rafter spans for southern yellow pine douglas fir and eastern spruce. 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.