Square Hip Roof Framing

With a square roof the ridge becomes a square center piece kingpost with side lengths equal to common rafter thickness.

Square hip roof framing.

Hip rafters are the diagonal rafters that span from the ridge at the top down to the corners of the roof. A pyramid roof is one of the many variations of hip roofs. They must must be on the same level. Hip roofs can be designed over square shaped buildings as well as on rectangular ones.

Some hip roof designs follow pyramid shapes whereas others may have more symmetrical structures. The drawings are representative of all of the hip end side jack rafters and do not include the overall lengths which are available on the layout tab. Use the framing square to find where the jack rafter s plumb cuts will connect to the hip. The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters.

Outside top plate edge to ridge top edge common 10 11 3 4. Purlin lip cut angle 11 4. Span for the main rafters measure from outside of wall to outside of wall. When you have the length of the jack rafters use a round saw to cut the seat and shoulder cuts.

Hip backing angle 15 4. Select the following information by using the drop downs to enter values in feet and inches. 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. The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal.

The hip end jacks tab displays a dimensioned side view and top view of the hip roof jack rafters for the hip end side of the hip rafter on an irregular hip roof. The design of hip roofs can follow triangular sides as well as a combination of triangular and trapezoidal sides. Hip roofs essentially lack gables or vertical sides. If the wall plates are all square of equal lengths then the hipped rafters would form a pyramid shape like the picture above normally a roof is rectangle and there are more yellow common rafters.

The depth of the seat cut should be equal to the thickness of the wall you re installing the rafter on. The green arrows above show every side is equal we ll assume 2 metres for.