Roof Support Beam Span Calculator

Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.

Roof support beam span calculator.

F stands for the beam s fiber strength in bending which depends on the species of wood. Window door garage door headers supporting roof loads only. For the initial calculation f can be estimated at 1 000. Also available for the android os.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. For example a 3 ply 2x8 beam would use three 2x8s nailed together side by side. L stands for the span of the beam in feet. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Structural ridge beam span calculator posted on april 7 2020 by sandra open source wood find tools 4101 8 01 roof ceiling construction single span ridge beam ridge beams and boards modern technical steico construction. The values displayed in the resulting table will show nine possible maximum beam spans for the supported length selected. Most interior beams need to include the roof load. This calculator matches up with 90 of the applications in the 2012 international residential code book.

Patio roof maximum beam rafter spans beamsmeasuring pergola dimensions learn the standardwhat is max distance between posts using 2x12x20 foot beams for apergola beam span calculator pergolacanopyideas pergolayou measuring pergola. It has been my experience to never use a beam smaller than a two ply 2 x 8. If there is are any questions about anything else then you should contact your supplier or an engineer. In the example the beam spans the 10 foot width of the roof.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Window door garage door headers supporting roof wall floor loads. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. The total load is 4 000 pounds.

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