Post Holes In Rock

Emo

Whats the best way to get thru big rocks when digging post holes. I have a auger on wheels do the carbide cutters work?

dayspring

DYNAMITE! or maybe a rotary hammer drill

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mdshunk

I know the fence companies around me tend to use a tow-behind jackhammer air compressor with a rotary rock drill.

Emo

THANKS for the info I'll look into it.

RobertCDF

I use a jackhammer and if that does not move the rock I will drill 3 holes with a hammer drill. I then insert rebar into the holes and epoxy them in. Then pour the pier as normal.

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Robert Shaw
Colorado Springs Custom Decks
Colorado Custom Decks
Custom Composite Decks

747

A controlled Detonation. Depending on how hard that rock is you could burn through several carbide bits. Its my understanding those bits aren't cheap. Plan b. Find a guy who has a bobcat or tractor with the hydralic jack hammer mounted on it.

Ps.....C4 or RDX

Glasshousebltr

If it's pretty flat on top of the rock, and the rocks just to big to move, a wet core hole saw will do the trick.

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Bob

sprinklerguy

I just installed 1000 feet of split rail fence....500 feet of which was solid granite.

We used a 220 cfm compressor at 10,000 feet in altitude and a 90 lb jackhammer...some holes too up to an hour to do. it sucked, but it got done and done right.......

Good luck, I feel for you.....

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Tony Neumann
Lawn Sprinkler Repair and Irrigation Installation
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