Alwayslearningelec
Senior Member
- Location
- NJ
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- Estimator
If your running a conduit inside and have to penetrate a concrete wall what determines whether you hammer drill it or core it? Block wall vs. poured in place wall? Thanks.
The equipment you have, the size of hole, etc.If your running a conduit inside and have to penetrate a concrete wall what determines whether you hammer drill it or core it? Block wall vs. poured in place wall? Thanks.
"mat"?Block walls can easily be busted out with a hammer in a hollow cell. Poured concrete walls I use a Hilti Ferroscan to locate the mat and then core drill.
What determines it is how need you want or have to be. At least for smaller holes. Bigger holes generally get cored period.If your running a conduit inside and have to penetrate a concrete wall what determines whether you hammer drill it or core it? Block wall vs. poured in place wall? Thanks.
Not for core drilling, but I bought a bit made just for rebar in concrete. It cut through it like butter. But yes, I hate to hit it with either a core drill or regular hammer drill.Yes. I don't like cutting the rebar if I can help it. A Ferroscan can show you where it is inside the wall to avoid or minimize cutting it.
A core drill does cut through steel like butter. But I have done some jobs that have been commissioned and they require d any core drilling to not cut the rebar. Their reasoning I guess is that by cutting the rebar I have reduced the strength.Not for core drilling, but I bought a bit made just for rebar in concrete. It cut through it like butter. But yes, I hate to hit it with either a core drill or regular hammer drill.
is that ferroscan like an xray ?Block walls can easily be busted out with a hammer in a hollow cell. Poured concrete walls I use a Hilti Ferroscan to locate the mat and then core drill.
Lots of people call scanning for rebar in concrete "x-ray" but as far as I know it is not actually x raying.is that ferroscan like an xray ?
Similar here. I do up to 1-1/8 SDS which does 3/4 pipe size, but anything above that is diamond core which we can do up to 6". Above that we sub it out.1” or less I will roto hammer, anything larger than that, I’m core drilling. I have an SDS core bit set that goes up to 1-3/4” that I use frequently on brick because it cuts cleaner.
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Yes. It will pick up steel that is inside the concrete to make sure that you don't cut through conduits, rebar, etc....is that ferroscan like an xray ?