Need help with potential concrete anchor issue with new 2-post lift installation

[stevep500]

After reading and rereading many great posts on here about lifts, I decided to go with a C-7000 lift. I liked the Maxjax but I wanted higher lift and safety stops.

I am in the middle of installing the lift. I drilled a couple of holes to 4" deep with a Bosch 1" bit that has two full-size cutters and two smaller cutters. You are supposed to tap the included Powers Smart DI+ anchors into the holes and then use the set tool. My anchors fall to the bottom of the holes. There is no initial friction fit. I checked the hole sizes and they measure from 1" to 1-1/16" in diameter. Does anyone know if it's ok to set the anchors with the set tool as is or am I screwed on hole size?

Thanks,
Steve

 

[cubfarm 1]

Are your bolts the normal 3/4? If you are getting 1 inch plus holes you may neeed to move up to one inch bolts so that you can use the holes you have done. Holes in baseplate may need drilled out to fit as well.--- you do want to drill the holes ALL THE WAY THROUGH THE CEMENT. This way if the lift needs removed the anchor bolts can be driven doun through the bottom of the slab. In this way the holes can be reused. If you have to cut off the anchor bolts they cannot be reused and the holes are still filled with the old bolt.

 

[77Mini]

Are you sure you are drilling the right size? As mentioned before most guys use 3/4" anchors.

 

[Slowgsr]

Your anchor has a wedge in the bottom. Which will expand when you use the tool provided (basically a shouldered punch)

They should fall in the hole freely, slight play.
Do not drill through the slab if you do this style anchor will not be able to be set in place, as you will drive it into the gravel base

Then your hoist will be anchored using a bolt, these anchors that accept 3/4" bolts do required a larger drill size ie 1". Like the 3/8 anchors require drilling 1/2" hole.

They are strong, I use them overhead to hang threaded rod, engineers seem to spec that style.

Check their website - there's a video.

I always use 4 sided hilti bits in my sds, the 2 sided junk ones always go oversize and don't cut as fast. Be sure you used sds for clean holes

 

[Jakerot]

Those anchors are referred to as "drop ins". That's the "DI" in the model name. They are considered light duty. Some of their advantages are they are easy to install, and if you remove the equipment being mounted later, you don't have a stud sticking up to deal with , like you would with epoxy or wedge anchors.

In addition to the other pointers above: read and follow the instructions.

Blow out the hole with compressed air..Just watch out for debris flying in your face.

Don't over torque the bolt or you might pull the anchor out if it isn't flush with the concrete surface.

When using the setting tool, make sure the wedge goes all the way down. You can feel a difference when hitting the setting tool with your hammer. This particular anchor looks like it leaves blue marks when it is set properly.

And as has said above, don't drill through the slab or else the anchor won't set.

Good luck!!

 

[lakeroadster]

And if all else fails consider the use of Epoxy Anchors. I used them on my Rotary lift and they worked quite well.

A lot of options

 

[stevep500]

Thanks everybody!

The 3/4" bolts do require a 1" hole because the drop in wedge part is 1" wide. The lift manufacturer's instructions call for 4" deep holes but the drop in part is only 3-3/16" long which lets the anchor fall pretty far below the surface. I was concerned about the anchor falling in the hole without resistance because Powers' video showed the anchors being hammered in. I finally found a couple of other videos by distributors showing the anchors just falling in the hole without hammering. Just drop the anchor in and seat it with the special hand tool that sets the internal wedge to the proper depth.

So it looks like I'm ok with what I have except for the depth. I'll check with the lift company to confirm that the depth needs to be less. They may have changed anchor suppliers which caused a change of depth that they didn't correct in their literature.

Again, thanks for the help.
Steve

 

[cnb8869]

And if all else fails consider the use of Epoxy Anchors. I used them on my Rotary lift and they worked quite well.

A lot of options

I also recommend epoxy. Sika anchorfix 3001. We use similar stuff on bridges, like anchoring sign posts into it.