Dear friends:

I plan to build a 60 ft wood fence (6' high) along a concrete driveway. I'd like to ask for your advice on how to dig post holes (about 2 ft deep)
in a concrete driveway. Here's what I may try to do:

- Jackhammer: I'm afraid that this tool will crack the driveway too much.

- Hammer drill: drill holes along a circle of 1 ft diameter and use chisel/hammer to break up the concrete.

- Post hole digger or power auger to remove the underlayer dirt/soil.

Is there a better procedure to dig post holes in concrete without having to rent All these tools? Thanks.

Best regards,

Eric

HOLE SAW for masonary...( sometimes called a core saw or drill)......you won't have the cement crack in the future then. Try equipment rental place. at least an inch larger than the biggest wooden post.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Sounds like alot of work.
Would you be able to anchor the posts with brackets
right on top of the cement?

I am assuming why you want it in the cement is that the cement goes right to your property line, otherwise you would put it just beyond the cement.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I used an air hammer, the pistol grip one you hook up to an air compressor. Worked great.

You didn't indicate how many of the holes are to be in the concrete.

I have to assume you want it to look clean (otherwise you can break up the surrounding area and fill it in with NON-matching concrete).

You can rent (or hire) a concrete coring drill with the proper diameter BIG bit.........OR

You can make up a metal bracket and bolt the bracket to the concrete with nice stainless fasteners. The post would sit in the bracket. Drill the holes with a hammer drill.

The other methods are hack methods and you're free to save some money.

Boneheaddoctor: I assume you were typing fast and meant to use the term concrete and not cement? (apologies in advance, its a pet peeve of mine).

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)

yes....I am a poor typist......Concrete is the correct term I agree. Concrete consists of gravel, sand and cement.....

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Doctor,
Are you involved in the CCRL lab testing program?

I'd say this is your best advice on the issue so far.

I assume that you will be using 4"x4" posts, if so, those brackets are readily available at home depot. Like they suggested, no need to be breaking up any concrete.

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Enough about me, how are you doing?

No......using Cement in place of concrete is the same as loading "bullets" into your gun.

You load "Cartriges" . That consists of a shell casing, powder, a primer AND a bullet.

Common misusage and I have been guilty of both myself.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Unless of course, you are putting a bullet in your frontstoking, charcoal burner.

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Never a dull moment at Berry Hill Farm.

I've seen those things get loose over time resulting in a wavy looking fence, especially if the fence is counter to the prevailing winds.

It is about time someone ask something I can answer.

Go to your local rent-all place and they will rent you the proper tools. Ask for diamond bit and a drill. Get the drill that fastens to the concrete with shots and pins. Some call them Hilti or Ramset or shotguns.

Better yet find a company that drills holes in concrete. They charge by the square inch. Your driveway is most likely not too thick and the cost will be reasonable. Check the prices on what ever you decide with two or three suppliers/contractors.

If you live near Greenville, SC I can help with a list of those who perform these task.

Dan

Maybe you can improvise some sort of cannon which will actually shoot these poles right into the concrete driveway. MAN does that sound like fun or what? Everyone in town will wonder "WTF was THAT?!" "HEY there is went again!"
Or I have a little smilie here with his recommendation: .

Gilly

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