M60Gunner
Master
- Joined
- Sep 14, 2017
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- 113
Bolt hole is 1/2 inch. I want to do at least 2 of the 4 for s cross corner bolt down. thanks for any advice.
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Yep. Most drills eat right through it. Rebar is a different story. If your drill doesn't have a clutch, make sure you're holding on. I drill 100s of thousands of holes a year and rarely hit anything the drill won't eat through.It is possible when drilling your slab you might hit some steel mesh. Likely to be hard on your bit. a lot of the slabs now days are poured without any steel in them since they can get the building inspectors to sign off on fibers mixed in the cement. Not a good idea for the home owner.
What kind of support/reinforcements have you all seen for under the safes of an off-grade house? Some kind of column down to the dirt? Post hole with concrete? Miniature subterranean slab foundation, supporting a cinder block column, topped with sheet metal, snugged up under the joist?
Side question: is that an Austrian flag?