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. For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor.

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2 2x10 or a no.

Douglas fir floor joist span tables. 2 grade of douglas fir are indicated below. If this is the case with your structure use the floor. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce. 1 psf lb f ft 2 47 88 n m 2.

Span tables for douglas fir larch lumber. Maximum floor joist span for no. 2 lumber grade all joists are bridged sample floor joist span table. Rafter spans for southern yellow pine douglas fir and eastern spruce.

Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. 2019 california building code section 2308. 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. Live load is weight of furniture wind snow and more.

Dead load weight of structure and fixed loads 10 lbs ft 2. 1 ft 0 3048 m. 2019 residential building code r502 r802. 2 2x12 would work.

The table excerpt above is simply a sample and may not be valid for your region. In douglas fir larch either a no. The table below shows the maximum span for a floor joist with the following designations. Douglas fir larch lumber species no.

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