01-18-2010, 12:33 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,029
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Not Ranked
Quote:
Originally Posted by madmaxx
go buy a 4 post lift, they do not need anchored. I would think the whole floor or larger than 16x16 would have to be replaced. I imagine the bending moments on your bad can get pretty high. 2000lb times 4 feet? = 8000 ft-lbs of torque, it does not seam a 16x16 square would not pop out off the ground and let the thing turn over.
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As long as it's tied into the existing slab he will be okay. Otherwise you are correct. I would pull out of the floor.
Here is a link to how to tie into existing slabs.
http://www.finehomebuilding.com/how-...ete-slabs.aspx
Also, you need to maintain a 1 to 1 ratio between depth of the anchor to the edge of the slab to avoid break out. This means with a 4 inch anchor, you have to have a minumum of 4 inches to the edge of the slab, or slab joint.
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John Hall
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