topic Re: hip rafter slope in Modeling

hip rafter slope

David Bearss — Tue, 23 May 2023 12:14:55 GMT

I have never had a problem with this before but for some reason the hip rafter does not match the roof slope. Am I missing some setting somewhere?

Re: hip rafter slope

MrC — Tue, 28 Nov 2017 03:17:05 GMT

Hi David I am assuming you have created the framing shown? If your'e dealing with a regular hip roof ,my rule of thumb (which your contractor is probably going to use) is to replace the "12" in your roof pitch with "17". So for example,
the angle of your hip rafter, if a 6/12 roof would be 6/17......

Re: hip rafter slope

Lingwisyer — Tue, 28 Nov 2017 04:10:04 GMT

I've never used the rafter object before, but it looks like your hip rafter is the same pitch as your other rafters when it should be a lower pitch dependant on the angle into the hip...

If you're wondering how the "rule of thumb" that MrC has mentioned, 17 is approximately the horizontal distance from corner to ridge on a square roof of 12 from edge to ridge.

Ling.

Re: hip rafter slope

Barry Kelly — Tue, 28 Nov 2017 05:42:37 GMT

I might be stating the obvious here, but if it is just a rafter object then it will need a "hip" switch parameter that will adjust the roof pitch to suit the hip angle.
If not then you will need to manually set the correct pitch of the hip.

If it is a specific hip rafter object then I am not sure what the problem could be other than the wrong pitch value.

Barry.

Re: hip rafter slope

gpowless — Tue, 28 Nov 2017 13:07:32 GMT

Hip rafter objects from the Roof Framing add-on changes pitch when manually stretched in plan view.

Re: hip rafter slope

David Bearss — Tue, 28 Nov 2017 22:31:18 GMT

Well I had created the roof with the multi plane roof tool. I deleted that and created with the single plane tool like I usually do and the hip rafter worked just fine. Go figure.