Hip And Valley Roof Structure

A valley rafterforms a depression in the roof instead of a hip.

Hip and valley roof structure.

The main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. Here roofs are constructed with an angle of 90 degrees. Hip roofs tend to be stronger than gable roofs but there is an increased cost in building a hip roof as it s a more complicated structure that requires more building materials and effort. While hip roofs are stronger and more wind resistant they can be prone to leaks due to the increased level of joins required so care must be taken to.

The tables of hip and valley framing angles are given for 23 roof slopes the even inch pitch roof slopes of vertical and horizontal pitch. First of all you need to design the layout of building. Extend from the ridge to the valley rafter. For each roof slope the pitches of the twelve framing angles are given at even degree positions of the hip or valley as indicated by 51 positions of the locating angle d from 20 to 70.

Http amzn to 2sfscbz swanson speed square http amzn to 2svgnvt 16 x 24 framing square starrett http amzn to 2sflm5v milwaukee circular saw http amzn. Such buildings may have more than four hips in the roofs and they form valleys at the inside corners. On an irregularly shaped structure there may be more than four hips which then may alternate with valleys to form a hip and valley roof. This runs down the length of roof.

This type of roof is also called broken back hip and valley roof because the main hips are intconeected by the rafter of gables on one side and the rafter of the valley on the other. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Now draw the centerlines for all rectangles that are formed inside. A hip and valley roof may be part of an irregular structure.

The roof beam that extends from the corner of the plate to the ridge along the intersection between the two sides of the roof. A hip roof is self bracing requiring less diagonal bracing than a gable roof. A variant is the half hipped or jerkin head roof which has gable ends truncated by the eaves of a small hip end or jerkin head that descends a short distance from the roof ridge. Like the hip rafter it extends diago nally from the top plate to the ridge.

Ridge and ridge vent. Hip roofs are thus much more resistant to wind damage than gable roofs. Hip rafterforms a raised area or hip usually extending from the corner of the building diagonally upwards to the ridge. Ridge is at the top of the roof where the two sides meet and form an angle.

Now outline the biggest rectangle inside the building layout.