Roof Without Ridge Board

In most applications the ridge board is not structural and only serves as a convienience for the carpenters as they frame the roof.

Roof without ridge board.

This video shows how to make roof rafters with a rafter square and or a speed squ. For 2 x 6 rafters use a 2 x 8 ridge board and so on. This can be accomplished with collar ties boards spanning the shed at ceiling height or with large gussets further up the rafter slope. Ridge beam sizing is based on the span of the beam between supports and the amount of roof load supported by the beam.

Ridge beams are required by code if the roof slope is less than 3 in 12 irc section r802 3. You don t need a ridge beam but you do need a way to keep the walls from spreading. You may splice two boards together to achieve this length if necessary using a 14 and 1 2 inch block of the same material. In conventional gable roof framing the slope of the roof is formed by rafters that run diagonally downward from the peak of the roof to the tops of the exterior walls of.

A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to. One collar tie would be enough in your case. Its only job is to provide a connection point for the roof joists on each side of the roof. First off yes it is a common practice to frame a roof with no ridgeboard.

Ridge board the engineering principles of the ridge board are a bit more complicated. 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. While the joists commonly attach to the side of a ridge beam they can also sit on top of it as shown in the diagram below which creates an interesting look. For 2 x 4 rafters use a 2 x 6 ridge board.

Rafters and ridge boards. A structural ridge is the standard alternative to ceiling joists. The ridge board s length will be the outside measurement of the building plus the length of the overhang at both ends.