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Looking For A Special Tool

 
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Old 08-27-2008, 06:22 AM   #1
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Looking For A Special Tool


I'm looking at a large parking lot bumper installation (150 units) which each require 2 rebar stakes installed. Has anyone ever heard of a jack hammer type tool to install the rebar? Using a sledgehammer would get tiring somewhere around the 10th bumper.
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Old 08-27-2008, 06:54 AM   #2
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Re: Looking For A Special Tool


There is an attachment for a
roto-hammer I've seen used for
driving ground rods and such.
There was a thread about it
last year in the electrical forum
I think.

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Old 08-27-2008, 07:20 AM   #3
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Re: Looking For A Special Tool


I have done it before. Cut the rebar on a 45 degree angle. Then the next straight. then the next on a 45.

The first cut will produce one flat end and one 45 end which will act as a spike. This first cut will ALSO produce the bottom of the next spike. This is why the next cut need be straight and thusly producing the TOP of the next spike. It is just alternation.

Then they will drive fairly "easy" (never really easy).



|_____/_____|_____/_____|_____/_____|


Post Script: You may also purchase hammer-able spikes.

http://www.interwestsafety.com/store...?idProduct=237


I personally like my spikes to be 18".
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Last edited by MALCO.New.York; 08-27-2008 at 06:50 PM.
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Old 08-27-2008, 08:06 AM   #4
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Re: Looking For A Special Tool


Quote:
Originally Posted by neolitic View Post
There is an attachment for a
roto-hammer I've seen used for
driving ground rods and such.
There was a thread about it
last year in the electrical forum
I think.
I was going to say the same thing, though I didn't know it was an attachment.

I've seen from afar an electrician putting in the ground rod. Took just minutes if that. They have bigger ones at the local rental place I've used to tap a shallow well, but that's more than likely overkill for what you are talking about.
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Old 08-27-2008, 10:20 AM   #5
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Re: Looking For A Special Tool


I've done it with just a standard jackhammer....just rent one of those little hiltis from HD, should do the job!!
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Old 08-27-2008, 05:51 PM   #6
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Re: Looking For A Special Tool


I've wanted a Bosch rotary hammer, but never had an opportunity to justify it (like that matters when it comes to tools).

thanks Malco-I cut my wood stakes in the same fashion and was leaning toward 18" too. Figured a 24" stake won't have any additional holding power. I speced out #5 rebar versus #4-anyone have data if the 5/8" has considerably more holding power to keep the bumper from being pushed with an automobile?
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Old 08-27-2008, 05:58 PM   #7
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Re: Looking For A Special Tool


Quote:
Originally Posted by 72chevy4x4 View Post
anyone have data if the 5/8" has considerably more holding power to keep the bumper from being pushed with an automobile?
Cars aren't the problem. Snow plowing is the real problem.
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Old 08-27-2008, 06:47 PM   #8
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Re: Looking For A Special Tool


Yes! Shunk is quite right. The cars tire size is just about enough to go over the bumper rather than push it. If the bumper was say 2 inches taller then it may be a "Push Thing".

I do believe that the larger gauge rebar will be better.

BTW???? Rubber or Crete or Asphalt type Bumpers? If rubber, more force will be absorbed by the spikes due to the lower Inertia of the Bumper.
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Old 08-27-2008, 09:28 PM   #9
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Re: Looking For A Special Tool


what you need is a scale model of a fence post driver. These will drive a corner post with a square end right down into dry soil without splitting or smashing the top.
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Old 09-03-2008, 05:58 AM   #10
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Re: Looking For A Special Tool


we do them all the time,

8in long reo bar.

hit in with sledge hammer, pre drill holes first

Last edited by mrghm; 09-03-2008 at 06:01 AM.
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Old 09-04-2008, 09:52 PM   #11
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Re: Looking For A Special Tool


Ground rod attachment for Bosch Brute jackhammer(60lb yellow one that almost all rental yards have) I bought one years ago and it works alot faster than good ol sledgehammer. You can rent what you need I bought it I think it was $80. Takes about 45 seconds to drive a 3/4" x 10' ground rod into the ground as long as you dont hit any rocks or overpoured footing. Make sure you have a stable ladder with someone holding it. They make the ground rod attachment for the smaller bosch also.
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Old 09-04-2008, 10:56 PM   #12
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Re: Looking For A Special Tool


Quote:
Originally Posted by neolitic View Post
There is an attachment for a
roto-hammer I've seen used for
driving ground rods and such.
There was a thread about it
last year in the electrical forum
I think.
Quote:
Originally Posted by NICKPAUS View Post
Ground rod attachment for Bosch Brute jackhammer(60lb yellow one that almost all rental yards have) I bought one years ago and it works alot faster than good ol sledgehammer. You can rent what you need I bought it I think it was $80. Takes about 45 seconds to drive a 3/4" x 10' ground rod into the ground as long as you dont hit any rocks or overpoured footing. Make sure you have a stable ladder with someone holding it. They make the ground rod attachment for the smaller bosch also.
There you go!

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