Floor Load Width Single Span

In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches.

Floor load width single span.

The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c. Dead load weight of structure and fixed loads 10 lbs ft 2. Spacing should be interpreted as the centre to centre distance between adjacent parallel members. 2 grade of douglas fir are indicated below.

Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. Live load is weight of furniture wind snow and more. Spans shown are in feet 4. For example a joist made from doubled 2 x 6s can span a distance about 25 percent more than a single 2 x 6 but a 2 x 12 can span about 80 percent more than a 2 x 6 even though it has the same amount of wood as a doubled 2 x 6.

Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope. Live load represents the weight of furniture snow etc. Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code. The span table for a 30 psf live load 10psf dead load floor indicates a required fb value of 1 315 and a minimum e value of 1 800 000.

Dead load is the weight of the structure and any fixed items. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. If you have any questions you should contact an engineer. Top and bottom chords braced by structural sheathing 6.

Let s expand our house beyond that 17 2 span capability to 24 feet wide. 1 psf lb f ft 2 47 88 n m 2. 1 ft 0 3048 m. Maximum span of 2x6 floor joist.

This chart is for basic reference only. Tcll top chord floor live load 2. Maximum floor joist span for no. Openings are to be located in the center of the span max opening width is 24 inches 7.

Required size for a given span. Tcdl 10 psf and bcdl 5 psf 3. The width is considerably more important than the thickness of a board. So the house dimensions will now be 24 x 13.