Hip Roof Rafter Sizing

Column headings refer to live load.

Hip roof rafter sizing.

Now mark 2 inches onto the timber which is a 1 4 of 8 alternatively if metric hold 200mm across and mark where 50mm falls. Here the number is 1166 66 inches. For a good straight fascia add an extra 20 mm or so to the tails of all your rafters total length. Rafter run outer wall this should be measured starting from the center of the roof span and then extending to the very edge of the exterior wall.

It is always better to have a large rafter rather than be concerned with a sagging roof. Hip and valley rafter sizing. This calculator will help you estimate hip roof parameters including rafters and roof area person outline anton schedule 2011 08 29 17 53 20 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. 1 ridge 6050 x 140 x 50.

Hold the tape measure across the width of the timber and keeping the zero end in place pivot the other end of the tape round until the 8 inch mark meets the timber. Length l in feet is shown at right. Here the number is 941 86 inches. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

This is based on an article in the journal of light construction. Roof rise this should be calculated from the base of the roof to the highest point of the roof gable the peak. This chart is for intersections of equal pitch only. 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 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. 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. Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. From your average hip roof calculator to something more specific like a hip roof rafter calculator there is plenty to consider with this kind of calculation.