Douglas Fir Floor Joist Span Tables

2 grade of douglas fir are indicated below.

Douglas fir floor joist span tables.

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. Live load is weight of furniture wind snow and more. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce.

Dead load weight of structure and fixed loads 10 lbs ft 2. For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4. The table below shows the maximum span for a floor joist with the following designations. 2019 residential building code r502 r802.

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. Douglas fir larch lumber species no. If this is the case with your structure use the floor. 1 ft 0 3048 m.

In hem fir either a no 1 2x10 or a no. For this use the tables in design values for joists and rafters. 2 2x10 or a no. Maximum floor joist span for no.

Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. 1 psf lb f ft 2 47 88 n m 2. 2 2x12 would work. 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 douglas fir larch either a no. Span tables for douglas fir larch lumber.