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 ridge beams (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.
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