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Old 06-23-2011, 08:25 AM   #16
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First time using a jackhammer


You can get it done with a grinder but think of the mess and the time. It would take all of an hour or two worth of cutting and $50 worth of blade and you would have several manageable size chunks that are easy to dispose of.

Are you going to haul it off yourself or pay someone?

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Old 06-23-2011, 02:21 PM   #17
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First time using a jackhammer


Not sure what I'll do with it after, it will sit in a pile till I figure out that part. I will probably end up getting the guy who does the weeping tiles to just haul it out as part of the job.
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Old 06-23-2011, 03:12 PM   #18
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First time using a jackhammer


Red, remember "The Great Escape"? Just stuff a handful in each pants pocket every night, and go for a walk around the neighborhood. Nobody will notice the slow accumulation of dust along the sidewalk!
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Old 06-23-2011, 04:24 PM   #19
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First time using a jackhammer


Haha yeah, could just slowly get rid of it some other way.

I was thinking of just renting a portable rock crusher and then I could use it as backfill, then I realized just how massive a portable rock crusher is, and it's not something a typical DIYer would be renting. LOL
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Old 06-23-2011, 05:30 PM   #20
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First time using a jackhammer


I thing the portable rock crusher in the photo will bring it down to backfill size just fine.
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Old 06-23-2011, 06:19 PM   #21
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First time using a jackhammer


Red, I'm trying to be very nice, I figure you got a quote for someone to do the demo, I think you are going to find out why its a high cost, when at the end of your vacation, you still are not done. An electric jack hammer can't come close to the power of the air compressor ones. You hit the concrete with a 75 lb'er, chisel bit, then you'll be moving right along. That is a big bite you are chewing on,, be safe
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Old 06-23-2011, 07:54 PM   #22
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First time using a jackhammer


Quote:
It's the big stuff, so don't think snips would do it.
"SNIPS"??? Who said anything about "snips".
That appears to be #4 rebar (1/2"). A good pair of 48" "BOLT CUTTERS" will cut it if you get the bar deep into the jaws of the "BOLT CUTTERS". You can rent "BOLT CUTTERS".

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I was thinking of just renting a portable rock crusher and then I could use it as backfill, then I realized just how massive a portable rock crusher is, and it's not something a typical DIYer would be renting.
Okay now that is meant to be a joke...right?

Quote:
"An electric jack hammer can't come close to the power of the air compressor ones."
There's a lot of truth in that statement but an electric jackhammer will do just fine. Hell you're having trouble using the electric I can't imagine what you would do with a huge air compressor trailer and a seventy-five pound jackhammer. You don't run those things, they run you.

Quote:
What about a propane torch, does that generate enough heat to melt metal?
No way. It takes oxy-acetylene to cut rebar.

RS you have all the information you need to get this done. Taking out the concrete with a thirty-five pound electric hammer is a one day job for one man. Go for it. Removing the spoils is a second day.
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Old 06-23-2011, 08:40 PM   #23
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First time using a jackhammer


I'll see if I can find these bolt cutters then, did not figure it was possible to cut something that big with a manual tool. Might be the fastest way.
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Old 06-25-2011, 11:01 AM   #24
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First time using a jackhammer


I hate it when I start a project I think will be easy, and get just far enough in to find out that not only is it NOT going to be easy, but I'm in too far to turn back!

Congrats on your JackHammer experience. They suck to run, don't they?


The key to busting up concrete is to get the support out from under it. It looks like a lot of your project is unsupported, but unfortunately you have the rebar issue.


I broke up a LOT of old concrete sidewalk this spring by propping up one corner with a long bar, then beating on it with a sledge hammer (an old railroad spike hammer, to be exact). It was a heckuva lot of work, and it took awhile, but it went okay. The nice thing about using a sledge hammer - as opposed to a rented jackhammer - is that you can take your time and do as much as you can until you're tired.

If you can break the concrete away from small sections of the rebar, you can cut it with a hacksaw bit in your sawzall.

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