Concrete Anchors

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  #1  
Old 06-27-06, 08:43 AM
J
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Concrete Anchors

I have a big piece of equipment I need to secure to my concrete floor. I need to use the concrete anchors that involve a bolt due to how heavy this unit is (I can't use concrete screws).

I am having trouble getting the anchor to grab at the bottom oof the hole. I have tried an anchor sleve as it is called by Home Depot and there is another I get there that is a bolt with some loose metal parts at the bottom that will grab when the bolt is tightened. As I mentioned, I can't get these to grab. I just drilled a 1/2 inch diameter hole about 3 inches down and that was it, I put the anchor in and nothing will grab.

Is there a trick I am missing? I must be doing something wrong.

Joe
 
  #2  
Old 06-27-06, 10:57 AM
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Simpson make an epoxy system where you epoxy the bolt into the concrete. See http://www.strongtie.com/ftp/catalogs/C-SAS-2006/C-SAS-2006-p037.pdf

They sell this at HD, in small packages. Look for the Simpson Tie-down products.

Good Luck.

DWC
 
  #3  
Old 06-27-06, 02:15 PM
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I have been having great success with WedgeBolts, especially in monoliths. Same could hold true in your floor. Very aggressive thread, and superior holding power.
 
  #4  
Old 06-28-06, 08:18 AM
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Yep. I used wedge bolts 5/8" x 10" in my workshop tie-down. They do work very well. The post by Joe led me to believe that he already tried them. If not, that would also be my first choice.

DWC
 
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Old 06-28-06, 08:37 AM
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Yeah, I've already tried wedge bolts and they aren't working well. I think the adhesive will work, going to go by a store today to see if I can find it.

Thanks,
 
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Old 06-28-06, 08:06 PM
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I know it sounds like a marketing ploy, but you have to use the Wedgebolt bit in order to get a good fit with the Wedgebolt.
 
  #7  
Old 06-29-06, 07:38 AM
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Let us know what finally works for you.
 
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Old 06-30-06, 07:40 AM
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I ended up going with the epoxy that dwcurry suggested. This was the easiest method and the only thing I had to watch for was to make sure the holes I drilled were clean (used a bottle brush to clean them). I had a hard time, as you know, when trying to anchor the concrete anchors.

The epoxy seems to have worked well, set up in about 30 min and I am going to leave it alone for a week or so before I tighten the bolts.

Thanks for all the responses on this, they did help.
 
  #9  
Old 08-07-06, 02:14 PM
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Sounds good.. I am going to use that to secure my air compressor to the concrete garage floor.
 
 

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