Ridge Beam carries the cut ends of rafters at the upper and lower sides of the opening when framing an opening in roof frame.
what is ridge beam?
The ends of the rafters at the ridge are supported by ridge beams, which transfer their loads to posts or gable end walls. If the roof slope is less than 3 in 12, then the code mandates the use of ridgebeams (IRC section ).
The amount of roof load supported by the beam and its span between supports are used to determine how big a ridge beam should be.
A ridge board is a non-structural component that opposing rafters can rest against and connect to as a prop. Only roofs with slopes of 3 in 12 to 12 in 12 can employ ridge boards. Ridge boards must have a nominal thickness of at least 1 inch and a depth equal to or greater than the cut end of the raft.
