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Old 03-06-2011, 07:56 PM   #1
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Knee wall and rafrer advice


Hey guys, need a little advise here. I'm building a 16x22 shed. I'm putting a second floor in it for storage. I got as far as the pictures show before winter set in. I wanted to use 10' walls and set my second floor rim board down a foot or so, but I knew I wouldn't get the roof on before the snow came and I didn't want all the snow, ice and water sitting in what would have been a one to two foot pool. So now I have a delima...My second floor plywood runs over the top of my walls. What I want to do is build 12-16inch knee walls on top of the floor and I am field framing 12/12 roof from 2x8. Do you think the knee walls will be ok or will the rafters and load want to push the walls out.


I had thought about drilling 2 holes next to the windows and on the back side to put a piece of 6-8ft of Galv in water pipe attached to the knee wall down to the studs on the first floor wall to keep the knee wall in place.

Here is a You tube of it being built
Fast

Slow


Thanks in advance for any input. Sorry I spelled rafter wrong in the title









Last edited by Bucky Badger; 03-06-2011 at 08:14 PM.
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Old 03-06-2011, 09:55 PM   #2
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Knee wall and rafrer advice


http://www.unified-eng.com/ch/thrust.html

Gary

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Old 03-06-2011, 10:25 PM   #3
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Knee wall and rafrer advice


Quote:
Originally Posted by Bucky Badger View Post
Hey guys, need a little advise here. I'm building a 16x22 shed. I'm putting a second floor in it for storage. I got as far as the pictures show before winter set in. I wanted to use 10' walls and set my second floor rim board down a foot or so, but I knew I wouldn't get the roof on before the snow came and I didn't want all the snow, ice and water sitting in what would have been a one to two foot pool. So now I have a delima...My second floor plywood runs over the top of my walls. What I want to do is build 12-16inch knee walls on top of the floor and I am field framing 12/12 roof from 2x8. Do you think the knee walls will be ok or will the rafters and load want to push the walls out.


I had thought about drilling 2 holes next to the windows and on the back side to put a piece of 6-8ft of Galv in water pipe attached to the knee wall down to the studs on the first floor wall to keep the knee wall in place.

Here is a You tube of it being built
Fast

Slow


Thanks in advance for any input. Sorry I spelled rafter wrong in the title







How come you didn't just sit the floor joists on the top plate instead of hanging them off a ledger?

Are the front and back girders that the joists are nailed to doubles?
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Last edited by Joe Carola; 03-06-2011 at 10:35 PM.
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Old 03-06-2011, 10:58 PM   #4
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Knee wall and rafrer advice


Here's a drawing of a way you can do it now.
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Old 03-07-2011, 06:02 PM   #5
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Knee wall and rafrer advice


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Originally Posted by Joe Carola View Post
How come you didn't just sit the floor joists on the top plate instead of hanging them off a ledger?

Are the front and back girders that the joists are nailed to doubles?

Because I would need 18footers..How would that help my situation?
If you are talking about the 2nd floor they are singles. Why?

Last edited by Bucky Badger; 03-07-2011 at 06:14 PM.
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Old 03-07-2011, 06:19 PM   #6
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Knee wall and rafrer advice


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Originally Posted by Joe Carola View Post
Here's a drawing of a way you can do it now.
Yeah, great drawing thanks Joe. I had thought of that too.. When I build my gable ends, I will cut the end studs at 16 inches and start my 12/12 from there. So probably 3-4 angle braces for the 22 ft? I have wall jacks so I will build the gables as a wall and stand it.


Last edited by Bucky Badger; 03-07-2011 at 06:25 PM.
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