Hip Roof Rafter Size

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.

Hip roof rafter size.

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. 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. Here the number is 1166 66 inches.

This chart is for initial rough sizing hip and valley rafters work should be checked by an engineer before plans are finalized. Hip and valley rafter sizing. 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. With consideration for r802 3 and table r802 5 1 3 2006 irc based on a common rafter length of a little under 20 it is plausable that 2x10 common rafters attached to 2x12 hip rafter can be used prescriptively where common rafters are 12 o c.

This is based on an article in the journal of light construction. Length l in feet is shown at right. Here the number is 941 86 inches. Getting your se to accept this is another matter though.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Therefore it s perfectly acceptable to use a hip member that sized to take the cut end of the jack rafters and a sensible width such as 1 5. This is the kind of size used on hipped roofs for years without any problems. Column headings refer to live load.

For a good straight fascia add an extra 20 mm or so to the tails of all your rafters total length. Ronnyraygun 8 feb 2013. It is always better to have a large rafter rather than be concerned with a sagging roof. This chart is for intersections of equal pitch only.

For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. To do this your best bet is definitely finding a good hip roof construction calculator so that you can work it all out in a timely and simple fashion.