Another 2 Post Lift Anchor Thread

[wssix99]

With this thread newly bumped, I'll add that I've used my lift just about every day since installing it, and have had zero issues with the Sika epoxy. I check the torque once a month or so, and I've only had maybe two nuts need to turn the slightest bit to achieve the torque (75-80 ft lb) the first check. I did not have any movement the last time I checked them. No cracking in the concrete, and all is well.

But the only way one would know if the bolt is properly adhered with the epoxy is to do a pull-out test. Mechanical anchors don't need this extra assurance.

 

[mepstein]

I did epoxy on my maxjax since every other wedge anchor install that I read, had to be redone with epoxy. Also, the 9K lift installed at my shop was epoxied. My techs use it everyday without any issues. We did repour a large section of the shop floor. It used to be a barn for animals and the concrete was thin in spots.
I’d rather get under a two post than jack stands. In my mind, a properly installed two post won’t fail. People get crushed under jack stands all the time. Years ago, one such accident came in to the trauma unit where my wife worked. She made me promise not to use jack stands and had no problem when I mentioned I was buying a lift, other than to tell me to make it a good one. My garage only has 8’ ceilings but my shop is 14’.

 

[bmdubya1198]

But the only way one would know if the bolt is properly adhered with the epoxy is to do a pull-out test. Mechanical anchors don't need this extra assurance.

That's a fair point. I'm not going to any extent testing things though... I rent my shop, this gets the job done. My next shop when I buy one will be well-prepared for a lift, even if I have to re-pour concrete in the spot. Obviously I value my own safety working under a lift, and I feel my solution worked well for my application.

 

[firebirdparts]

I think WS6 is fundamentally right, but on the other hand, when you torque them you prove they're good at X force. If you can do the math you can prove them non-destructively up to that level. You could consider overtorquing to some level that makes you feel better and then loosen and set the torque to whatever the real target is, but the forces are so huge at 80 or 100 ft-lbs you may conclude that's enough (again, if you can do the math).

 

[Overhaulin63]

In the face of your manufacturer recommending something else and the many downsides and complications of using epoxy (some of which you mention), why is it the way to go for you?

Lift manufactures typically reserve this solution for last-resort fixes or special applications.

I just feel like using all-thread epoxy is a stronger way to mount and I hate doing things twice and I certainly don't want to take a chance of a failure or having an anchor pull out. I also don't want to spend another $500 on grade 8 all-thread, washers, and nuts, but I would feel more secure under the lift knowing i did it the best possible way, that's all.