Gambrel Roof Framing

 
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Old 02-21-2012, 08:10 PM   #1
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Gambrel Roof Framing


Building a gambrel roof 14 ft X 20 ft.First time tackling one of these. There are many ways to frame this. Do gussets really provide good strength? Should they be of 1/2 or 3/4 plywood. with or without construction adhesive. Thanks for the input! SM
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Old 02-21-2012, 08:19 PM   #2
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Re: Gambrel Roof Framing


I didnt use gussets or glue the two times I did them.

Where would you be using either of those in a roof........................

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Old 02-21-2012, 08:20 PM   #3
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Re: Gambrel Roof Framing


gussets really do work, ask anyone who has ever walked the bottom cord of a 60' 2x4 truss. I have always used solid 2x material at the joint spaced evenly across the miter. the rafter should be self sustaining but codes are different when it comes to this.
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Old 02-21-2012, 10:37 PM   #4
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Re: Gambrel Roof Framing


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Originally Posted by 904sorock
Building a gambrel roof 14 ft X 20 ft.First time tackling one of these. There are many ways to frame this. Do gussets really provide good strength? Should they be of 1/2 or 3/4 plywood. with or without construction adhesive. Thanks for the input! SM
Can you timber frame it? There are all kinds of cool joinery techniques that were used in barn building, back in the day, that would be fun to do.
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Old 02-21-2012, 10:46 PM   #5
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Re: Gambrel Roof Framing


I would be to costly to timber frame it wouldnt it?
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Old 02-21-2012, 11:26 PM   #6
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Re: Gambrel Roof Framing


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I would be to costly to timber frame it wouldnt it?

Yes

Use gussets and glue.
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Old 02-22-2012, 12:01 AM   #7
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Re: Gambrel Roof Framing


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Yes

Use gussets and glue.
What city in CA are you out of GRIZ?
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Old 02-22-2012, 07:24 AM   #8
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Re: Gambrel Roof Framing


I use wood and glue.
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Old 02-22-2012, 08:45 AM   #9
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Re: Gambrel Roof Framing


Haven't made one in years but I learned 1/2" osb and pepper that **** with 1 3/4 roofing nails.
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Old 02-23-2012, 10:32 PM   #10
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Re: Gambrel Roof Framing


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I would be to costly to timber frame it wouldnt it?
It's a 14' x 20' "shed". It won't be all that expensive. Do something distinct and memorable.

I helped my best friend's dad build one from recovered free lumber.
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Gambrel Roof Framing-bent-004.jpg   Gambrel Roof Framing-assembly-012.jpg   Gambrel Roof Framing-dsc02906.jpg  

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Old 02-23-2012, 10:40 PM   #11
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Re: Gambrel Roof Framing


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What city in CA are you out of GRIZ?
This is top secret, no no really knows where Why He11 I don't even think he's in California maybe St. Pete. Fla.
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Old 02-23-2012, 10:57 PM   #12
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Re: Gambrel Roof Framing


I will try and find some timber framing for gambrel roofs
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Old 02-24-2012, 05:47 AM   #13
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Re: Gambrel Roof Framing


Quote:
Originally Posted by 904sorock View Post
Building a gambrel roof 14 ft X 20 ft.First time tackling one of these. There are many ways to frame this. Do gussets really provide good strength? Should they be of 1/2 or 3/4 plywood. with or without construction adhesive. Thanks for the input! SM
If plywood is used, the rule of thumb is 3/4" to match the thickness of the sandwiched rafter. With that said, when designing Gambrel roof it's very important to consider wind load and other load factors, because of the odd angled shape and not having ceiling collar ties, you have increased chance for rafter movement under WL, LL and DL, so the gussets must be sized correctly, if not your roof will fail.... Let's say you have a large building span and your ridge beam location lets say 11'+ high, you will need a gusset which will extend anywhere from 18-24" on each side and they should be nailed 4"OC etc and each case will be different so a smart thing to do is have an Architect design your roof and gusset design.
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Old 02-25-2012, 12:26 PM   #14
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Re: Gambrel Roof Framing


I stick framed this one many years ago. Went off architects drawings and did a mock of the roof on the deck before went into production cutting mode. Was one of my last framing gigs. Good times
Didnt use any glue though








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Old 02-25-2012, 12:51 PM   #15
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Re: Gambrel Roof Framing


rawr, looks good blackbear

heres one I did in trade school, weird angle, but it was for the portfolio we had to do.

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Old 02-26-2012, 05:02 PM   #16
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Re: Gambrel Roof Framing


damn. i wanna make one now

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