Douglas Fir Floor Joist Span Tables

2 2x12 would work.

Douglas fir floor joist span tables.

2019 residential building code r502 r802. The table below shows the maximum span for a floor joist with the following designations. Maximum floor joist span for no. 1 psf lb f ft 2 47 88 n m 2.

Dead load weight of structure and fixed loads 10 lbs ft 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. Douglas fir larch lumber species no. If this is the case with your structure use the floor.

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. For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4. 2019 california building code section 2308. Span tables for douglas fir larch lumber.

Live load is weight of furniture wind snow and more. In hem fir either a no 1 2x10 or a no. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce.

For this use the tables in design values for joists and rafters. The table excerpt above is simply a sample and may not be valid for your region. 2 grade of douglas fir are indicated below. Rafter spans for southern yellow pine douglas fir and eastern spruce.

2 lumber grade all joists are bridged sample floor joist span table. 2 2x10 or a no.