Roof Ridge Beam Size

Loading conditions are detailed below.

Roof ridge beam size.

These small areas are usually door opening on the interior and people are trained that these areas are the strongest place in a house to be in the case of an emergency. For the initial calculation f can be estimated at 1 000. Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables. The total load is 4 000 pounds.

No matter what the specs say. Ridge beam sizing is based on the span of the beam between supports and the amount of roof load supported by the beam. It has been my experience to never use a beam smaller than a two ply 2 x 8. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to.

For each application a pdf download is available. Structural ridge beam span calculator posted on april 7 2020 by sandra rafter to ridge beam connection framing roof ceiling construction structural ridge beam absolute deflection in a ridge beam structural ridge beam tricks of the trade. Also see assumptions for table development. If you know the slope x in 12 you want to use for your roof framing design you can use it along with the run r to determine the height of the ridge beam.

In the example the beam spans the 10 foot width of the roof.