Looking For A Special Tool

72chevy4x4

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.

neolitic

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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MALCO.New.York

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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KentWhitten

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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Custom Cabinetry - Portland, Cape Elizabeth, Scarborough, Kennebunkport, Yarmouth, Falmouth, Cumberland, Ogunquit, Maine

Salmon Falls Cabinetry

JPF

I've done it with just a standard jackhammer....just rent one of those little hiltis from HD, should do the job!!

72chevy4x4

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?

mdshunk

Cars aren't the problem. Snow plowing is the real problem.

MALCO.New.York

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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Something to One may be Nothing to another!

Ultimate Wisdom---------
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cleveman

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.

mrghm

we do them all the time,

8in long reo bar.

hit in with sledge hammer, pre drill holes first

NICKPAUS

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.

neolitic

There you go!

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