How To Build Hip Roof With Enequal Wall Lengths

Lengths of hip and valley jacks are determined as in.

How to build hip roof with enequal wall lengths. 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. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. That is where the seat cut should be made. 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 amount to be removed from each side must be separately determined according to the angle the hip makes with the plate. 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. This is the centerline of the first jack. The typical gable roof diagram above shows the r length measured from the outside wall to the middle of the ridge beam the rafter section diagram below typical of a shed or patio cover roof shows the r length measured from the outside wall to the outside face of the ridge beam either one is acceptable depending on which type of roof you are building but if you are using the.

Attach 4 6 centering rafters and lift the ridge beam into place. 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. Mark the length of the hip measuring down from the longest point of the plumb cut. With your square set on the main roof side of the hip rafter step off the true run of the first hip jack using the pitch of the main roof hip 8 15 5 8.

The backing of hips on roofs of uneven pitches while the amount to be removed on each side of the hip will vary is determined by the principles developed in sec. How to use the hip roof framing calculator. For each successive jack rafter step off the common difference. Then mark another plumb cut 25mm over which denotes where the hip would touch the wall plate if it wasn t for the gap.

Then measure down that plumb cut the same distance as the common rafter s height above plate. Mark a plumb line. One of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area. 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.

All formulae are below the calculator.