nbrowne
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| 06/12/2008 12:27 AM |
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I am doing a complete icf walkout basement (not stick framing the walkout part). The frost coverage here is 4ft, so at the walkout part the wal is going to be 13 or 14ft depending on wether I go 4ft or 5ft on the frost wall. problem is I only have 10ft braces and want to do this all i one pour, remote area don't want to pay for pumps etc twice. I am confident in my block so my issue is how to do the bracing. I was thinking running 2x6 0r 8 horizontally at 3 or 4 ft high with vertical 2x4s every 4 ft from the footings up to the 2x6. Then attche my braces at the top of the 2x6 as I normally would on the footings. Any sugestions? |
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Chris Johnson
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| 06/12/2008 1:43 AM |
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Install double braces, first one on the footing, second one raised up on the next web over with a 2x block below it to the footing to support it. Put a turnbuckle on both channels, lower one lower down, higher one higher up (Hope that didn't confuse you). Also put something between the two channels to help them work in unison, proper item would be threaded rod (18" pieces), but I know that is expensive...you could use rebar if you wanted to and I would make sure it is joined together in at least three places...top, bottom and middle
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Chris Johnson - Pro ICF
Napa, CA
Come for the wine, Stay for the ICF work |
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smartwall
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Posts:57
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| 06/12/2008 7:41 AM |
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| Where are you located |
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nbrowne
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Posts:6
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| 06/12/2008 8:49 AM |
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| Chris I understand what you mean and that sounds like a good idea for maing the bottom portion stronger and adjustable.. the only thing now is what do I do to get the bracing up higher so that it goes to the top of the wall. I only have 10 footers so even using those would only take me ten feet high on the wall. The reason I was going to run a horizontally beam 3 ft high with verticals to the footing was so I would have a support system to rest my bracing on and make it to the top of the wall. If I put a strong back above a strongback then my braces will stick about 6 feet above the wall making it difficult to pour. |
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Chris Johnson
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| 06/12/2008 8:48 PM |
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| What is your email? I will send you a photograph of what I am talking about |
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Chris Johnson - Pro ICF
Napa, CA
Come for the wine, Stay for the ICF work |
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irnivek
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Posts:274
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| 06/13/2008 12:17 AM |
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As an option, we routinely pour walls without the top course being fixed to a strongback. You can zip tie or wire or gently glue the top course to the second from top course.
We started with 10 foot strongbacks, I would install the bracing as normal, turnbuckle extended as far up as possible, maybe you will have to pour and vibrate close to chin height if you are short....
Install an extra strongback/steel stud only on the web beside each brace, outlooking 3 ft. upwards. This will overlap your strongbacks 7 feet and easily carry the higher portion without additional turnbuckle.
Start your pour in the "tall wall" area.
Option 2 is pour the walkout portion out of a truck if you can get to it two and a half courses high, backfill inside and out and pour as usual. or don't backfill and set your strongback on a 3 foot block.
Kevin |
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nbrowne
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Posts:6
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| 06/18/2008 1:16 AM |
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thanks for the suggestions I have double strongbacked the tall walls and am happy with the results. my next problem is that I have used all my braces up and on a large portion of the wall I have 10 foot braces with 12 ft walls ( owner decided to change grade levels after starting). I dont want to remove the braces I have already installed so what can I do to make up the 2 feet so that I can straighten the top and keep it secure. My idea is to use 2x4 and extend it to the top of the wall from the braces and tie into the ladder. |
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Chris Johnson
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Posts:359
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| 06/18/2008 2:51 AM |
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| If one block is going to be unsupported by itself I would run a 2x4 (Just use an 8' stud) from the top down (on the inside where the braces are), install blocklock on the top course and run something horizontally across the top of the block on the outside. I found electricians strut works really well. Also keep a few 16' 2x's around...just incase a wall needs some help after the pour |
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Chris Johnson - Pro ICF
Napa, CA
Come for the wine, Stay for the ICF work |
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