For this example i ve excerpted the relevant sections from tables for hem fir douglas fir larch and spruce pine fir figure 4.
Douglas fir floor joist span tables.
2 2x12 would work.
The table excerpt above is simply a sample and may not be valid for your region.
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.
Maximum floor joist span for no.
2 lumber grade all joists are bridged sample floor joist span table.
2 grade of douglas fir are indicated below.
2 2x10 or a no.
Dead load weight of structure and fixed loads 10 lbs ft 2.
If this is the case with your structure use the floor.
Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.
Live load is weight of furniture wind snow and more.
1 ft 0 3048 m.
1 psf lb f ft 2 47 88 n m 2.
For this use the tables in design values for joists and rafters.
Ceiling joist spans for southern yellow pine douglas fir and eastern spruce.
Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor.
2019 california building code section 2308.
Douglas fir larch lumber species no.
In douglas fir larch either a no.
Span tables for douglas fir larch lumber.
2019 residential building code r502 r802.
Rafter spans for southern yellow pine douglas fir and eastern spruce.