| Drilling in concrete for post anchors
We were going to redo our deck, but when we tore it out we found a perfect slab under it. So we decided to keep the cement. Not many years ago we built a fairly large arbor over the deck(about 14x20)and it was anchored to the deck framing.
Now I'm in the process of replacing the support posts(4x4's) and intend to use post anchors. For the anchors it requires a 3/4" hole for the lead anchors. I tried drilling the first hole with a good 3/4" bit, but only got down less than an inch, need to go 2" deep.The cement is pretty old and was a 5 bag mix so it's really hard. I was using the drills I have,first a variable 3/8" and then I tried my old 1/2" drill, but no luck.
Would a hammer drill hopefully work?
Do I need a special bit(bought a professional 3/4" bit from our local ACE Hardware)?
Would drilling smaller sizes at first help?
Any advice sure would be appreciated.
Rich |