Replies

1. 
   bd342 | Feb 10, 2003 08:17pm | #1

   Sure its possible ,you will have an off-pitch diamond hip roof

   The longer span will be the shallower pitch the short span the steeper.

   Got any  overhangs, or pitches in mind? It would be very easy to give you numbers then.

   By the way it is rare that houses are built with no ridge at all . Having some ridge looks much better than no ridge at all.

   
   

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   Edited 2/10/2003 12:19:06 PM ET by benny

1. 
   JerseyJoe | Feb 10, 2003 08:30pm | #2

   That's the concern I have is that two different pitches will look un balanced . the pitch is a 5:12 with a 16" over hang.

1. 
   BossHog | Feb 10, 2003 09:27pm | #3

   I ran a couple of quick numbers on it, and came up with 7.1/12 running the 14' direction, with the 5/12 in the 21' direction.

   You could always order trusses for it - We have to do stuff like this every day.......................(-:It's not how you pick your nose, but where you put the booger.

2. 
   bd342 | Feb 10, 2003 10:18pm | #5

   Hey Joe.

   high pitch is 7.159":12"

   This difference in pitches is about the same as most off pitch roofs I've been cutting lately and does not look bad at all , notwithstanding the diamond that is.

   If you want,  here are the particulars...

   All rafter lenths are from the long point of th peak to the short point of the tail. For the seat cuts you must step back from the tail your 16" and put whatever seat cut in your 5 side that your materials will let you.

   5 side r/l=153 3/4"

   7.159 side r/l=115 9/16"

   hip pitch= 5 3/4:17"

   hip offset from corner of wall to center of hip is 6 15/16" (make sure you pull to your high side)

   cheek cuts for 5 side 55 deg.     7.159 side 35 deg.

   your heel for the 7.159 side will need to be 2 7/8" higher for equal overhangs.

   I would suggest you string and tape your hip number as you will have to subtract for both the thickness of your two first rafters as well as the intersecting rafters and the math for this is a little invovled and not worth the time it would take.

   This for an outbuilding by any chance?

1. 
   JerseyJoe | Feb 11, 2003 05:51pm | #7

   Benny

   Your Numbers match with my calculations, I thought there was some new math floating around that I haven't herd of yet to make two unequal pitches the same.   

   I started  questioning my ability to calculate a roof after working with trusses for so long . thanks for the help

1. 
   bd342 | Feb 11, 2003 06:15pm | #8

   Glad to help, have fun.

2. 
   Piffin | Feb 10, 2003 09:44pm | #4

   A simple phone call (yeah, Right, I know) to the archy with a question, "Is this really what you wanted? You can't have it look like this and both be 5/12. Which one is 5/12 and what's the pitch on the other one."

   Make him do his job, otherwise you have to assume something and it might be wrong. He has to know that with multiple pitches, he needs diferent wall heights or different overhangs to make it work out. Now is the time to rub his nose in it BEFORE he comes by just as you finish saying, "That's not what I wanted!"

   But then, maybe this isn't an archy and just a plan book sheet.???

   .

   Excellence is its own reward!

1. 
   JerseyJoe | Feb 11, 2003 05:36pm | #6

   Thanks for the advice I did call the architect and got the usual answer "hugh I didn't catch that we'll have to put a ridge to keep the same pitch."   

   hey maybe the architect will split his fee with me.