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ICF372
Registered Users
Posts:219
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| 12/13/2001 2:25 PM |
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I have a client who would like to use arch top or half moon shaped windows. What is the " best" " easyest" way to form the radius on the top? He will be using wood bucks. And a flat wall form.
Eldon Howe.
Edited by - ICF372 on 12/14/2001 22:06:25 |
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Eldon Howe
Howe Construction
Total Concrete Homes provide positive cash flow , DAY ONE . |
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James Eggert
Registered Users
Posts:1001
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| 12/13/2001 9:46 PM |
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Eldon
Are you planning on using a bow window preassembled or building what I would call a segmented window.
The issue here appears to be the roof, which can always be framed back to a straight wall which is typical for bow windows. They even make preassembled copper ones now. But if you are making a segmented area which will continue on the same plane all the way to the next level I would use plywood(1 1/8") and make the buck from that. Could you tell us more about this window because a preassembled unit would need nothing more than a regular square style buck and add a roof later?
Take Care
Jim |
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Take Care
Jim
Design/Build/Consulting
"Not So Big" Design Proponent |
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ICF372
Registered Users
Posts:219
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| 12/14/2001 10:04 PM |
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I'm sorry Jim, I see I used the wrong name for this type of window. They will be using a arch top or half moon shaped window. Thanks agian.
Eldon |
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Eldon Howe
Howe Construction
Total Concrete Homes provide positive cash flow , DAY ONE . |
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Ian ICF Builders
Registered Users
Posts:612
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| 12/15/2001 8:21 AM |
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Eldon:
There are a ton of ways to deal with these windows.
The outright simple and easy method is to buck out the wall in a rectangle, set the window, then infill the curved portions with wood and spray foam etc.
If you want to form the radius, then consider buying v-buck for those windows. V-Buck makes the radius to order, so there is no hassle. If you want to stick to wood, there are a couple of ways....
Build a rectangular buck with the top being equal to the start of the radius. (the top member must be inside to inside. Buy some EPS foam cut to match your radius. Set that foam on top of the buck (glue it there) then cut pieces of treated 2x4 the same length as the thickness of the wall (If you are using AMVIC 6" concrete, then the OTO is 11", cut 2x4's 11" long) Put a couple nails through the 2x4's for attachment to concrete, tack glue these to the top of the foam blockout. Then cut the ICF forms to match the buck. When you strip the foam out, you will be leaving the 2x4's in place in the shape of a perfect radius.
You can use OSB to form the radius and screw 2x4's around the perimeter to get the same result.
You can cut the ICF wall to 1-1/2" greater than the R.O. of the window, keep the arch that you removed in one piece, recut it 1-1/2" smaller, reset it with 2x's around the radius. This holds the radius in place, but it will only be as good as the cut job..which usually isn't the best. You can also put several layers of hardboard in as the buck material, but I don't like using the hardboard.
The last method is probably the most logical....Go to the lumberyard and ask to look through the stacks of lumber until you find a board that has warped and twisted to the exact radius that you need....may not take long! Use that!
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markross
Registered Users
Posts:1035
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| 12/15/2001 6:52 PM |
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Or order V-buck pre moulded for the radius, although I hear they are sometimes not too exact.
Mark Ross
"Le Canuck" |
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Ian ICF Builders
Registered Users
Posts:612
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| 12/15/2001 7:19 PM |
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Hey Mark:
S-s-s-l-l-l-o-o-o-w-w-w d-d-o-o-w-w-n-n on the speed reading... Second paragraph above...
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ICF372
Registered Users
Posts:219
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| 12/15/2001 7:31 PM |
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Thanks guys, pretty much the way I thought. It's good to know for sure what really works.
About pre twisted lumber, Maybe I can just find a window to fit the lumber. Ha!
Eldon Howe |
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Eldon Howe
Howe Construction
Total Concrete Homes provide positive cash flow , DAY ONE . |
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Unregistered
Registered Users
Posts:2321
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| 12/16/2001 8:43 AM |
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here's one more method:
build the opening sqare with icfs to the start of the curve and fill the arch with forms. scribe and cut the radius, insert a piece of metal flashing or formica into the radius as a bond breaker and push the icf's back up to support the arch. brace the opening and pour, then remove the icf arch and formica.
peter juen
s/e florida polysteel inc. |
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