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arefai

04:59PM | 04/22/04
Member Since: 04/21/04
2 lifetime posts
Bvmisc
How do I remove a concrete slab that is about 6X5 and about 3-4 inches thick? The problem is also that this slab seems to have been mixed with rocks. Please advise. Can I try and do this myself? If so, what tools do I need? If I need to hire a pro, any idea on how much the would charge. Thanks.

Adam

NJ

treebeard

03:00AM | 04/23/04
Member Since: 01/14/03
264 lifetime posts
...if you have a couple of the right tools. A sledge hammer is a must. A long pry bar would be good, too.

If the slab is only 3-4 inches thick, you should be able to use the sledg hammer to hammer away at the slab from the top creating cracks and weak spots. Reaelly wack away at it. Your should see cracks and breakage pretty quickly. Once the slab is cracked and fractured, you can us the pry bar to get underneath the concrete from the side, prying it up for removal.

Now, depending on your size, if you're a good size guy, with a little help, you might be able to pry up one side of the slab a little and stick another rock or timber under it, even just a little. That will create an air space under the slab with no support or cushion to help take the hammer blows. Once it's up, hammer away and it should break up pretty easy....

...unless it's a lot thicker than you claim.

Now you're problem will be where to get rid of the stuff.

arefai

01:01PM | 04/23/04
Member Since: 04/21/04
2 lifetime posts
Thanks for your reply. I re-measured and the thickness is actuall 7 inches. Would the same procedure you outlined below still work for that thickness? Also, I'm concerned about the rocks that seem to have been mixed in with the concrete - will it split. Would a sledge hammer of 12 pounds work? Thanks again.


treebeard

01:51PM | 04/23/04
Member Since: 01/14/03
264 lifetime posts
Yes, even a seven inch slab can be broken up by hand using that method. But it will take more blows and perhaps a heavier hammer (I use a 20lb). You'll be expending some effort to do this. If the slab is reinforced, you'll have a problem making pieces out of it.

But, you never know unless you try. And if you're determined to get rid of the thing, the worst that can happen is that you can't do it yourself, and you have to hire someone.

A little safety hint...like Norm would say, make sure you're wearing safety goggles to prevent chips of concrete or stone from hitting your eyes.

homebild

04:01PM | 04/24/04
Member Since: 01/28/03
693 lifetime posts
Rent an electric jackhammer from a tool rental company for a day.

Might cost about $60US dollars.

No one in their right mind would try to break up a 3-4" let alone a 7" slab with a sledge hammer and pry bar only.

treebeard

03:23AM | 04/26/04
Member Since: 01/14/03
264 lifetime posts
I would assume that experience loses out to opinion here, homebuld? Of course a jackhammer is a better option. But it's not the only one. The old methods some of us still know how to use work, and work well.

Those who can do...

Those who can't..........
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