markvtg

I am considering having a 2 post lift installed. I will be lifting a 951 and a Jeep Liberty, probably not more than 4,500 lbs.

I have heard that the concrete in a standard garage floor is not strong enough to anchor the bolts. Is this true? I do not want to have to replace the garage floor if it is not necessary.

Any recommendations?

Thanks!

ian

So when it comes to questions on lifts a good place to go is http://www.garagejournal.com/.

But I have been looking into this myself, and for the lightest duty two post lift you will need 4 inches of concrete. If you find your foor isn't that thick you don't need to replace the entire floor, you will be able to cut out sections, and put thicker footings in.

Van

The pressure rating of the concrete may be an issue too... I put in a 7k lb lift, and used 6+ inches of 5000 psi fiber-filled concrete. It's been 8 years and absolutely no problems.

pontifex4

I built my garage around a 10k lb lift which required 4 inches of 3,000 psi concrete. We ended up going over spec on both measurements, but they wouldn't say it in the manual if it weren't enough.

The bottom line is that you have to be able to torque all of your anchor bolts to the required specification. If not, the whole thing needs to be taken down, new pads have to be poured, and I've heard that you'll have to wait about a month for them to fully cure.

Please note that I am neither a concrete contractor nor a structural engineer, so please do not take these as absolute recommendations.

badcoupe

Chasisliner required us to to have a minimum of 6 inches for our twinnlift. We drilled a test hole and 8 inches. Mine has one large post in the center of the shop that lifts 9k lbs per side. It's a very unique design. For what you're wanting to lift 4-5 inches should be fine.

markvtg

I appreciate the feedback and once the lift is in place, I will post photos.

Thanks

Mangonesailor

This is something I've been wondering for a long time. Guess I know how I'll have my garage built in the future.

gtroth

Start by calling the lift manufacturer.