Robert J
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Robert J (by dino [CA]) Jun 20, 2022 2:39 PM
       Robert J (by RR78 [VA]) Jun 20, 2022 2:59 PM
       Robert J (by DJ [VA]) Jun 20, 2022 3:38 PM
       Robert J (by dino [CA]) Jun 20, 2022 5:04 PM
       Robert J (by Robert J [CA]) Jun 20, 2022 7:20 PM
       Robert J (by dino [CA]) Jun 21, 2022 12:03 AM

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Robert J (by dino [CA]) Posted on: Jun 20, 2022 2:39 PM
Message:

Hi Robert,

Do you know of a relatively cheap jack / lifting device that can lift up 3 feet by 3 feet by 4 inches thick piece of concrete??

Concrete is resting on dirt so I could dig out some space to insert lifting arm.

Only need to temporarily raise it about 8 inches. Maybe could use two lifting devices with one on each side??

Guess is total weight of less than 500 pounds but I really don't know.

--104.175.xx.xx




Robert J (by RR78 [VA]) Posted on: Jun 20, 2022 2:59 PM
Message:

Not robert.

But I have used the cheap bottle jacks from harbor freight.

Dig under the slab. Put jack on top a patio paver to jack up. level.

Then just fill the hole with concrete. Leave the jack and bury in concrete. They are cheap enough. Around 20.00

--73.40.xx.xx




Robert J (by DJ [VA]) Posted on: Jun 20, 2022 3:38 PM
Message:

I'm just curious what type of project you're doing.

Leveling a sunken piece of side walk, or what? --68.229.xxx.xxx




Robert J (by dino [CA]) Posted on: Jun 20, 2022 5:04 PM
Message:

DJ,

I have a mostly good concrete walkway but a section has been raised slightly by roots which I have removed up to the concrete walkway. Instead of removing the concrete section, I suspect it would be level and good if I can remove the last part of the roots which have raised the concrete which is not otherwise cracked.

I don't know for certain it will work but it seemed worth a try since it would be more trouble to demo the concrete, remove the roots, and then pour a new small section of concrete.

--104.175.xx.xx




Robert J (by Robert J [CA]) Posted on: Jun 20, 2022 7:20 PM
Message:

I used something call a TOE JACK. It has two ways of lifting something. A lower Toe arm at the bottom of the jack or the TOP of the jack's Head.

I have a 2 Ton and an 8 Ton TOE Jack.

Instead of digging under the slab of concrete, I just dig down to expose the under side of the slab, maybe 3-4 inches. I set the jack "TOE" arm under the slab and can jack it up. You MUST use small blocks of wood in case the jack disconnects from the jack when going more than a few inches high.

My 8 ton is i-Lift Equipment TG80 Toe Jack, 8 Ton Capacity at around $250.

OR a small one can be purchased on Ebay for $80 - VEVOR Hydraulic Machine Toe Jack Lift 2.5/5 Ton Car Jack Lift Set Shop Equipment

Toe Jacks are so wonderful working on sidewalks. You can jack them up and add or subtract soil. Then put a layer of silica sand down. Lower the section of walkway and level it out.

--47.156.xx.xx




Robert J (by dino [CA]) Posted on: Jun 21, 2022 12:03 AM
Message:

Robert,

I was looking online before I posted this question and I did see the Toe Jack. It looked like it might work but I was not sure. Thanks for info.

--104.175.xx.xx



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