Vaulted Hip Roof Framing

The interior is pure cathederal with no columns supporting the ridge or hips and no collar ties.

Vaulted hip roof framing.

Not only must the ridge beam be supported but the top ends of the hips must also be supported. In a rafter roof all of these components are required to provide a stable roof. Subscribe to this old house. Without joists the walls can bow outward and the roof ridge line may sag.

These horizontal framing members tie a building s outer walls together and resist the outward force exerted by the roof rafters in conventional framing. Http bit ly subscribethisoldhouse he explains the difference b. The roof system consists of a ridge beam and 4 hip beams. Vaulted hip roof shobroco structural 28 aug 12 19 56 if this roof is as i picture it a tie at the corners of the top plate of the wall might be all you need with properly sized rafters turning the top plate into a ring beam or a half ring beam that is tied to the original house.

Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other. There was no ridge because the top of the roof was flat 6 wide. Furthermore if the vaulted roof is constructed as a hip roof things get even more complicated. Tommy silva gives the apprentices a lesson in hip roof framing.

Of the four basic roof shapes shed flat gable and hip only the flat roof is. And the rafters must have a secure connection to the hips. Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties. At the intersections the plates were all welded.

The hips and perimiter of the flat portion were framed with lvl and steel flitch plates bolted together. Vaulted ceilings can be constructed by either stick framing which means attaching each joist and rafter individually or by setting roof trusses that come engineered from a truss manufacturer. I have framed a cathedral hip roof. A vaulted roof structure opens the space below for stylistic reasons or for the addition of an attic or loft area.

The roof is rectangular 48 x 28 roof pitch 6 12 snow load 25 psf.