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Posted by Puddin' Man on September 11, 2006, 7:38 pm
On Mon, 11 Sep 2006 19:22:01 -0400, "BETA-2K"
>Thanks. That really helps. I didn't think about the possibility of wire
>mesh or rebar being in the concrete. I'm hoping to try this later this week
>and I'll post how it worked out.
WAIT!!!!!! :-)
I neglected to mention, you have to (repeat HAVE TO)
have a solid understanding of what's under the
floor before you can choose the spot for the sump
pit.
My first choice was close to my drain stack. Didn't
take long to figger that I'd run into the drain
line to the street after I'd dug a foot or 2.
Do you know where the drains are located?
What else might be in/under the basement floor and
where might it be located?
Don't neglect to plan for the concrete dust. A
water feed'll help, but it's still a big mess.
P
>> On Mon, 11 Sep 2006 15:12:17 -0400, "BETA-2K"
>>
>>>I need to cut a hole in a basement concrete floor in a house that I own so
>>>I
>>>can put in a sump pump.
>>
>> 'Tis an alligator with which I wrestled some years ago ...
>>
>>>I know how to do all of the sump pump stuff, but I'm not sure if there are
>>>any tricks to cutting the hole in the concrete. The concrete seems *very*
>>>hard (it sort seems like it's a finer texture and much harder to chip at
>>>or
>>>break than most concrete). I have tried drilling into this concrete in
>>>the
>>>past with a concrete drill bit and it seemed to go nowhere.
>>
>> Hammer drill with a nice, fresh percussion bit?
>>
>>>The main thing I want to avoid is creating a crack in the concrete while
>>>chipping or cutting out the opening.
>>
>> This was my greatest fear. I had a vision of a hideous crack
>> running the length of the basement ...
>>
>>>So, I'm wondering if I could buy some
>>>kind of one-time-use circular saw blade and cut grooves around the
>>>perimeter
>>>of the hole where the concrete would break/crack instead of the
>>>breaks/cracks extending outward past the opening.
>>
>> This is very close to what I did. I think I had to buy 2 7.25"
>> concrete
>> blades from Home Depot. Spec'd it out -very- carefully, cut out a
>> square with my minimum duty circular saw, maybe 1.25" deep. Then I
>> banged and banged with a big hammer/maul until it fell out.
>> Almost -perfectly- clean, no sizable cracks, tiny chip or 2.
>> I was much relieved.
>>
>>>I know this is somewhat vague, but any thoughts, suggestions, or ideas
>>>would
>>>certainly be appreciated.
>>
>> They've got better concrete cutting tools than what I used at the
>> rental places. Dunno how hard they are to handle. Likely helps if
>> you're built like Dick Dee Bruiser (I am 140 lbs with bad back).
>>
>> The guy that warned about the dust wasn't kidding. It's not just
>> hideous and insideous: I think it gets in your pipes, it forms a
>> compound like lye, can do much harm if ya don't have proper breathing
>> protection. Cleanup is a certified PITA.
>>
>> Also, I'm told that you can find most anything (i.e. rerod) in the
>> floor. Mine was just 2-2.5" of concrete, but I can't speak for
>> yours.
>>
>> Not clear? Ask Q's.
>>
>> Cheers,
>> Puddin'
>>
>> Pease pudding hot,
>> Pease pudding cold,
>> Pease pudding in the pot
>> Nine days old.
>
Pease pudding hot,
Pease pudding cold,
Pease pudding in the pot
Nine days old.
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