Because the ridge board is a smaller member typically only an inch thick sometimes even less it is not a structural member and doesn t carry the gravity load.
Ridge board roof.
Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12.
Ridge boards shall be at least 1 inch nominal thickness and not less in depth than the cut end of the rafter irc section r802 3.
Its only job is to provide a connection point for the roof joists on each side of the roof.
The ridge board must be set as perfectly as possible so take your time and use careful measurements.
The ridge board runs the length of the building and provides support for the tops of the rafters helping the whole roof structure work together as a system.
A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to.
The rafters and trusses that are part of the overall roof structure are connected along the body of the ridge board helping to create a durable framework that protects the rooms of the structure underneath.
The engineering principles of the ridge board are a bit more complicated.
Ridge boards and beams in traditional house framing also called stick framing a basic roof frame consists of opposing pairs of sloping rafters that meet at their top ends at a ridge board or ridge beam.
Metal sales universal ridge 14 in x 122 in steel roof panel ridge caps.