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I dug my holes until I hit good solid clay soil. Greg Smith's Website (who sells my lift, its not a mohawk) say I need 4' x 4' x 10" for a fresh pour. My fresh pour will be 4' x 4' x between 14-17" deep. That is 1.5 time what the man calls for. That will yield me a 3000lb block of concrete, plus...

I have been thinking about this too and for multiple reasons, I decided to put a vertical post next to my lift just for the ibeam. The width of the ibeam is 6 1/2". The reason I am doing a separate post is not because of the leverage point of view, as a completely vertical load that is 3 1/4"...

Any DIY ideas for filling the void under the rest of the floor? DIY is keyword. Its sound. I have been parking my duramax on it, driving a forklift so on so forth. Just want to fill the void.

Yes I am grad I did in the long run but here is some food for thought. It appears most of my slab is floating. I have been driving around a 6500lb (listed on the side plate) forklift that has a 3' x 4' footprint around on that floor for days. That forklift lifted my columns, plucked the cut...

They were few and far in between. They ran from the front of the shop to the back. There was probably 3 pieces in each 4' section.

Well I have it cut out now. What a nightmare. The place I usually rent from did not have a saw in stock so have to run another 15 miles out. Got it back and got cutting. Now this was a walk behind wet concrete floor saw. A larger engine then a demo saw. I say this because I have run a demo saw...

I just don't feel comfortable. I am getting the saw. and doing it once and doing it right.

I just spoke to greg smith himself and he says go ahead with it as it is. Not to worry about the void or cutting it out and replacing it. He also said it was his opinion and he was not an engineer. His main concern was the whether or not the anchors grabbed tight. I am going to make a template...

Greg smiths website say 4' x 4' x 10". I will call them in a few hours when they open...

I am going to call greg smith in the morning and get their opinion. I plan on renting the saw and going to town on the floor tomorrow if they say so. I will let everyone know the outcome as I am sure someone else will have this problem in the future. There is a little more involved here that I...

%^#&%$( I just dropped the post and am going to pour new. *($)#(&*%$)

I'm going to go ride my harley now and forget about this mess and call Greg Smith in morning.

The slab is almost 40 years old. We had a huge rain last night and it is dry down there. I am sure the base was never proper tamped and now it has settled.

But what is bad is I only have the forklift for the weekend, I have to drop the columns again to get them out of the way, and then I have to wait weeks until the new concrete is set to remount. Obviously I want to do it once and do it right, but I think the most simple and best cosmetically is...

Nevermind. It has the consistency chart on there. It cures at 6500psi as a fluid, 7500psi at a flowable, and 8500psi as plastic.

18 1/2" x 21 1/2" is my actual foot print. I am going to call greg smith first thing monday and get his opinion. I like RASIT idea. What consistency do you make the product? It sound like mudjacking, but with out the force behind it.

The slab is in great shape and the slab is all the posts bolt to. The bolts that come with the lift are ment to go into the concrete 4 inches. Bolting to the slab is what keeps the lift from "falling over". I have no concern about that. My concern is the vertical point load. The 5K on 22" x 22"...

Im trying to avoid cutting it out. My slab is in great shape, its just floating.

I just got my column tilted up and started drilling the holes on my new Atlas 10K, extra wide and extra tall lift. Got about 2 1/4" and hit rebar. Stopped and moved to the next hole. Just shy of 4" of concrete and then the drill just dropped. When I shinned my light in there and took a...

It would be just a little bit to wide. But more importantly, a four post gets in the way of doing suspension or tire changes. I would be fine with a 4 post if it had arms like a 2 post to lift the frame and not a drive on.