Flat Roof Wooden Beam

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

Flat roof wooden beam.

If there is are any questions about anything else then you should contact your supplier or an engineer. Flat roof with no permanent access and altitude not exceeding 100m 0 75 kn m udl 0 9 kn point load most areas exceeding 100m but not exceeding 200m excluding parts of scotland pennines north east england refer to bs 6399 3 1 kn m udl 0 9 kn point load. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

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. It has been my experience to never use a beam smaller than a two ply 2 x 8. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Also available for the android os.

This calculator matches up with 90 of the applications in the 2012 international residential code book. This is a completion video of a flat roof framing. Let s consider a basic gable wood roof framing design. This is a completion video of a flat roof framing.

Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Here we have a wood framed gable roof. Continuing on from part 3. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.

Most interior beams need to include the roof load. A roof beam is generally a length of wood steel or aluminum that holds up a roof meant to keep rain snow and other elements out of the house.