Detail Hip And Valley Roof Framing

Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties.

Detail hip and valley roof framing.

Gable a gable roof has a ridge at the center and slopes in two directions. The rafters carry the applied loads to the exterior walls. A hip rafter is called for only when framing a hip roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. The first step in the process of erecting the hip roof is to get the ridge beam into place at the top of the roof.

First of all you need to design the layout of building. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. And the line length measurement from the roof peak to the building wall is the hypotenuse. Here roofs are constructed with an angle of 90 degrees.

Now draw the centerlines for all rectangles that are formed inside. A valley rafterforms a depression in the roof instead of a hip. The run or half the building span is the base of the triangle. Like the hip rafter it extends diago nally from the top plate to the ridge.

The rise or height of the roof at its peak is the altitude of the triangle. An example of each is shown in figure 2 1. Attach 4 6 centering rafters and lift the ridge beam into place. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing.

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. Common types of roofs and basic framing terms. 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. Now outline the biggest rectangle inside the building layout.

Place the 4 6 common rafters in their designated positions along the 2 longest walls and nail them firmly to the wall with a nail gun. Trussed valley set detail no sheathing continuous 2x4 sp no 2 attached to the roof 146 basic 160 ultimate mph wind speed. It is the form most commonly used by. Hip and valley roof framing is no so complex as compared to hip roof framing procedures.

Parts of a roof 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.