On 12/29/2004 11:07 AM US(ET), took fingers to
keys, and typed the following:

I have an 8 foot gate which opens in the middle. Each gate has a bent
bar toward the bottom that is put in a hole in the ground to help keep
the gate closed. Recently I had concrete poured in the area and they
covered the holes. I want to drill holes into the slab so I can use
the bars again. I am concerned that water will get into the holes,
freeze, and crack the slab. Is this a valid concern? If yes, what can
I do to reduce this risk?
TIA
Jody

Drill the holes deep enough so that they penetrate the full depth of the
concrete (4"?) and drain into the stone or ground beneath.
Another suggestion is to drill the holes wide enough to be able to
insert a short piece of steel pipe into the hole. Any ice will have to
expand the pipe before cracking the concrete. Another advantage is that
the steel bar won't be banging against the concrete sides of the hole
when the wind is blowing.

--
Bill