Douglas Fir Floor Joist Span Tables

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor.

Douglas fir floor joist span tables.

Live load is weight of furniture wind snow and more. 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. In hem fir either a no 1 2x10 or a no. For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4.

2 grade of douglas fir are indicated below. The table excerpt above is simply a sample and may not be valid for your region. Rafter spans for southern yellow pine douglas fir and eastern spruce. Maximum floor joist span for no.

2019 residential building code r502 r802. 1 psf lb f ft 2 47 88 n m 2. 2 2x10 or a no. 1 ft 0 3048 m.

For this use the tables in design values for joists and rafters. 2 lumber grade all joists are bridged sample floor joist span table. The table below shows the maximum span for a floor joist with the following designations. 2 2x12 would work.

Span tables for douglas fir larch lumber. 2019 california building code section 2308. In douglas fir larch either a no. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.

Douglas fir larch lumber species no. If this is the case with your structure use the floor.