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

 

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

 

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.

 

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

 

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,

 

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.

 

Let us know what finally works for you.

 

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.

 

Sounds good.. I am going to use that to secure my air compressor to the concrete garage floor.