Truss Span Floor Joist Span Calculator

Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.

Truss span floor joist span calculator.

Span tables below illustrate common combinations of the multiple variables available. Maximum deflection is limited by l 360 or l 480 under live load. Spacing of trusses are center to center in inches. Floor joist span calculator to use the joist span calculator below first select the species of lumber you will use for your construction project from the drop down list.

Span calculator for wood joists and rafters also available for the android os. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Also available for the android os.

Enter a span for the joist. Also available for the android os. Span calculator for wood joists and rafters also available for the android os. The complete guide to roof trusses design cost framing more.

This will be slightly less than the length of the board. To learn more about deck joist sizing spacing and allowable span reference this chart. Floor truss span chart each individual floor truss design is unique based on multiple variables. Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.

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. Finally select a type of lumber. Geometry loading spacing bearing conditions etc. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

For example joists spaced 16 inches from the center of the joist next to it can span 1 5 times in feet the depth of their inches.