Porch Roof Beam Span Calculator

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

Porch roof beam span calculator.

If an example roof is 10 feet by 20 feet the total area is 200 square feet. Multiplied by 40 pounds per square foot equals 8 000 pounds. Steel i beam. Multiply the load per square foot by the total area of the roof.

Most interior beams need to include the roof load. According to our beam span chart resource the span of a beam is dependent on a few variables. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

Another simple column calculator. The species of lumber size of lumber and the load it carries. Two point loads at one third points on a simple beam. Beam span calculator for help simply click on the beside the section you need help with watch this tutorial video.

Patio roof beam calculator roof beam span calculator jackdecor co timber trusses beams patio covers and decks santa clarita christopher french beam span table douglas fir elijahhome co patio roof. 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. If there is are any questions about anything else then you should contact your supplier or an engineer. 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.

This number represents the total load that your roof must carry. Window door garage door headers supporting roof loads only. Lumber species southern pine douglas fir douglas fir larch hemlock fir spruce pine fir redwood western cedar ponderosa pine red pine. Simple beam point load at midspan.

Combined axial and bending load calculator. It has been my experience to never use a beam smaller than a two ply 2 x 8. Use this calculator to find out the beam span and deck footing size for your project. Uniformly loaded beam overhanging post calculator.

This calculator matches up with 90 of the applications in the 2012 international residential code book. Span calculator for wood joists and rafters also available for the android os. Rafter and ceiling joist forces.