Floor Joist Live Load Calculator

Most lay outs are on 16 so the field is pre selected. Bc calc performs engineering analysis to help our customers size beams joists columns studs and tall walls for their building projects. Dead load weight of structure and fixed loads 10 lbs ft 2.

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Span calculator for wood joists and rafters also available for the android os.

Floor joist live load calculator. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. 1 ft 0 3048 m. It is simple to use yet flexible enough to analyze a variety of common applications. The user enters the member geometry adds loads holes and other relevant data and then selects a product for analysis.

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. There are six choices. Span calculator for wood joists and rafters also. In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches.

Span calculator for wood joists and rafters available for the iphone. The lowest is a plain ceiling joist with no storage 10 pounds per square foot. 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. 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. Live load psf dead load psf span calculator for wood joists and rafters available for the iphone. Step 1 check the code. Live load is weight of furniture wind snow and more.

In this case your joists are adequate to support a 30 psf live load and 10 psf dead load. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. Maximum floor joist span for no. This is how far apart they will be.

Live load psf dead load psf exterior exposure. Select the on center spacing for the joists. The highest is a fully loaded floor 70 pounds per square foot. 2 grade of douglas fir are indicated below.

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. 1 psf lb f ft 2 47 88 n m 2. 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.