Select the on center spacing for the joists.
Floor joist live load calculator.
Dead load weight of structure and fixed loads 10 lbs ft 2.
The lowest is a plain ceiling joist with no storage 10 pounds per square foot.
Span calculator for wood joists and rafters also available for the android os.
True floor joist span calculations can only be made by a structural engineer or contractor.
First check the local code for allowable live load dead load and deflection see figure 2.
1 ft 0 3048 m.
Bc calc performs engineering analysis to help our customers size beams joists columns studs and tall walls for their building projects.
This is how far apart they will be.
In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches.
Live load is weight of furniture wind snow and more.
Span calculator for wood joists and rafters also.
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.
The user enters the member geometry adds loads holes and other relevant data and then selects a product for analysis.
The highest is a fully loaded floor 70 pounds per square foot.
Maximum floor joist span for no.
2 grade of douglas fir are indicated below.
Live load psf dead load psf exterior exposure.
Step 1 check the code.
Span calculator for wood joists and rafters available for the iphone.
1 psf lb f ft 2 47 88 n m 2.
Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.
There are six choices.
It is simple to use yet flexible enough to analyze a variety of common applications.
For this example i ll use the cabo one and two family dwelling code which serves as the model for many state and local codes.
While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator.
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.
In this case your joists are adequate to support a 30 psf live load and 10 psf dead load.
