Roof Ridge Board Size

Outside of the u s a degree angle is typically used.

Roof ridge board size.

For 2 x 6 rafters use a 2 x 8 ridge board and so on. Is 22 ridge board too long of a span worried about roof sag. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Some say i can use my 9 1 2 i beams for rafters and a single 2 x12 ridge board across the 16 span at the ridge.

Versa lam lvl size chart laminated beam span tables charts. 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. 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.

The ridge board s length will be the outside measurement of the building plus the length of the overhang at both ends. Others are saying i need an lvl ridge beam. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. I have read that a ridge board beam when used with wood i joists for rafters should have a ridge board beam that can support the entire roof load since the i beams are not designed to tolerate the compression that can occur in my situation.

It is always better to have a large rafter rather than be concerned with a sagging roof. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to.