Gambrel Roof With Ridge Beam

That a conventional barn sized gambrel is a nightmare of purlin beams ridge beams and dovetail.

Gambrel roof with ridge beam. Gambrel roof trusses on one side have an oblique cut for attachment to the ridge beam. The gross areaof the three raftergpnbrelwas taken. The common rafters are often smaller than the truss timbers to differentiate between the primary and secondary timber frame elements. We like common rafters between each truss thereby giving a rhythm to the roof structure.

Come to think of it the only style shed i can see that would be easy to use a ridge beam is the gable style shed. Choose a ridge board that is one size larger than your common rafters. The standard gambrel using a combination of14and 12 foot raf tersections. I can t ever recall seeing a saltbox shed built with a ridge beam or even a gambrel roof shed for that matter.

Area under roof the same gross areawas taken forboth roofs. Leave ridge beam for shed construction page. For 2 x 6 rafters use a 2 x 8 ridge board and so on. Figure 4 givesthe dimensions for the roofs.

The ridge board s length will be the outside measurement of the building plus the length of the overhang at both ends. These simple but elegant gambrel roof structures have been popular on hay barns for many years. Bothwere roof shapes stable underallcustomary dead loads for34 foot bams. For 2 x 4 rafters use a 2 x 6 ridge board.