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#1
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Need help with Gambrel roof angles
Sketch of a garden shed done for a friend.
-- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/ |
#2
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Need help with Gambrel roof angles
Here's the way I did it. I left it large so you could zoom in on details.
Hope it helps. |
#3
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Need help with Gambrel roof angles
"Scott Cox" wrote in
: Here's the way I did it. I left it large so you could zoom in on details. Hope it helps. I don't know much about this, but it seems to me that one would want some kind of structural member (a tie beam or cable) preventing spread of the roof under snow loads or such, kinda like Morris showed in his sketch (the red member). Maybe your gussets provide enough joint rigidity to prevent collapse, or maybe you don't get snow... Looks real nice, though - that ain't a shed, it's a small barn. |
#4
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Need help with Gambrel roof angles
"Scott Cox" wrote in message ... Here's the way I did it. I left it large so you could zoom in on details. Hope it helps. I hope the wind didn't blow before you got the sheathing on. :-) |
#5
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Need help with Gambrel roof angles
Suggestions
Structural engineer here. You need to properly provide "shear walls" on that building. From what you have framed I would think that a big blow of about 50-60mph would push it over. In a wind you are going to have several forces on that building. Wind will try and slide the building, wind will try and push it over (racking), and wind flowing over the top will try and lift the building. You need to make sure your roof and walls have a continuous load path to your foundation. I hope your bottom plate is bolted about every 24" to the foundation. Also make sure your studs have metal strap connections to the bottom plate. Additionally, use huriicane metal straps from rafters to studs. If you do this you will have a continuous load path. I would also add diagonal bracing on your roof prior to adding plywood. I would suggest that at least the first row of plywood on the roof be edge nailed every 4" and every 6" on intermediate rafters. Do the same for the plywood that extends out to the rake boards. On your walls make sure you have full sheet plywood from plate to plate on all walls. On the corners make sure you edge nail every 4" and 6" on the intermediate studs. On the area to the left and right of your garage opening. This is very critical since such little walls. You need plywood on both sides from plate to plate and nail off at every 3". Hopefully your garage opening header extends over these narrow wall sections. The plywood should ideally cover the header and be nailed on at least 3" spacing. Yes, this seems like overkill. But this is the learnings from the storms in Florida a few years ago. Believe it or not, most damage was done at 60-80 mph burst of winds. Hope this helps. On Wed, 10 Oct 2007 20:29:47 -0600, "Scott Cox" wrote: Here's the way I did it. I left it large so you could zoom in on details. Hope it helps. |
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