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. 2 lumber grade all joists are bridged sample floor joist span table.

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Span tables for douglas fir larch lumber.

Douglas fir floor joist span tables.

2 2x10 or a no. 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. 1 psf lb f ft 2 47 88 n m 2.

Ceiling joist spans for southern yellow pine douglas fir and eastern spruce. Live load is weight of furniture wind snow and more. 2019 residential building code r502 r802. For this use the tables in design values for joists and rafters.

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. Maximum floor joist span for no. 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. 2 grade of douglas fir are indicated below. Dead load weight of structure and fixed loads 10 lbs ft 2. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.

In douglas fir larch either a no. 1 ft 0 3048 m. The table below shows the maximum span for a floor joist with the following designations. In hem fir either a no 1 2x10 or a no.

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