Ridge Board Roof Construction

Rip the ridge board to the correct width to meet the rafter widths at the ridge.

Ridge board roof construction.

The ridge board and rafters are the strength of the roof. Its only job is to provide a connection point for the roof joists on each side of the roof. 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.

Definition of ridge board in construction the top board at the peak of a roof. 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. Cut to the ridge board to the length of the shed dimension b and mark it 24 inch on center. Position a ridge board down in the saddles of the supports.

The ridge board must be set as perfectly as possible so take your time and use careful measurements. This type of framing is a specially designed rafter layout and requires precise and experienced erection. Create a saddle at the top with the braces the height of the building walls plus rise less the width of the ridge board. Remove the spacers in both end wall trusses and put the ridge board in between the 2 gable ends.