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Is there a way to cut through concrete slab without making a mess?

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Is there a way to cut through concrete slab without making a mess? miamicuse 07-27-2005
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Posted by miamicuse on July 27, 2005, 10:29 pm


I am exploring cutting a 36"x36" hole through the 8" concrete slab in my
kitchen to access a sewer line for repair.

Called a few concrete contractors and one told me he will use a jackhammer
to punch the hole (cost $300) and the other told me he will use a saw (cost
$500). The jackhammer will probably spray dust in all directions and shake
loose some copper pipes in walls. The saw will make a clean cut according
to the contractor but he told me "imagine starting a motor cycle immersed in
a mud puddle"...this does not sound promising. Is there a way to do this to
minimize dust and mess? I am willing to pay a bit more for a cleaner
procedure.

Also, if they use a saw, does it mean it is a big mean machine they will
move from my door to the kitchen and along the way it may scratch the tiles
along it's path?

Thanks,

MC




Posted by on July 27, 2005, 7:55 pm


Did either contractor talk about dust partitions?
TB



Posted by miamicuse on July 27, 2005, 11:50 pm


No. What is a dust partition? Both of them told me if I need to minimize
mess I need to do something myself.

MC

> Did either contractor talk about dust partitions?
> TB
>




Posted by ~^Johnny^~ on July 27, 2005, 8:26 pm


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Wed, 27 Jul 2005 22:29:38 -0400, "miamicuse"

>I am exploring cutting a 36"x36" hole through the 8" concrete slab
>in my kitchen to access a sewer line for repair.
>
>Called a few concrete contractors and one told me he will use a
>jackhammer to punch the hole (cost $300) and the other told me he
>will use a saw (cost $500). The jackhammer will probably spray dust
>in all directions and shake loose some copper pipes in walls. The
>saw will make a clean cut according to the contractor but he told me
>"imagine starting a motor cycle immersed in a mud puddle"...this
>does not sound promising. Is there a way to do this to minimize
>dust and mess? I am willing to pay a bit more for a cleaner
>procedure.
>
>Also, if they use a saw, does it mean it is a big mean machine they
>will move from my door to the kitchen and along the way it may
>scratch the tiles along it's path?


Been there. Worst plumbing job I had was when I replaced cast iron
DWV in a laundromat w/concrete floor. Had to dig a ditch. Hired a
helper and used two jackhammers. Couldn't fool around - had to get
the job done.

A 90 lb hammer is definitely faster, because you ain't taking a 3x3
foot slab out in one piece, anyway. The hammer on the concrete,
and acetylene on the rebar. There is going to be dust. Wet saw will
minimize the airborne dust, but will make much mud. Very messy,
and worse to clean up.

Yes, they should hang dust curtains and use positive ventilation.
This keeps the mess in the work area.

Of course, you could chisel it out by hand... ;->



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--
-john
wide-open at throttle dot info


Posted by miamicuse on July 27, 2005, 11:49 pm


There is no new technology to cut through concrete? No laser beam cutter or
something along that line?

MC



> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Wed, 27 Jul 2005 22:29:38 -0400, "miamicuse"
>
> >I am exploring cutting a 36"x36" hole through the 8" concrete slab
> >in my kitchen to access a sewer line for repair.
> >
> >Called a few concrete contractors and one told me he will use a
> >jackhammer to punch the hole (cost $300) and the other told me he
> >will use a saw (cost $500). The jackhammer will probably spray dust
> >in all directions and shake loose some copper pipes in walls. The
> >saw will make a clean cut according to the contractor but he told me
> >"imagine starting a motor cycle immersed in a mud puddle"...this
> >does not sound promising. Is there a way to do this to minimize
> >dust and mess? I am willing to pay a bit more for a cleaner
> >procedure.
> >
> >Also, if they use a saw, does it mean it is a big mean machine they
> >will move from my door to the kitchen and along the way it may
> >scratch the tiles along it's path?
>
>
> Been there. Worst plumbing job I had was when I replaced cast iron
> DWV in a laundromat w/concrete floor. Had to dig a ditch. Hired a
> helper and used two jackhammers. Couldn't fool around - had to get
> the job done.
>
> A 90 lb hammer is definitely faster, because you ain't taking a 3x3
> foot slab out in one piece, anyway. The hammer on the concrete,
> and acetylene on the rebar. There is going to be dust. Wet saw will
> minimize the airborne dust, but will make much mud. Very messy,
> and worse to clean up.
>
> Yes, they should hang dust curtains and use positive ventilation.
> This keeps the mess in the work area.
>
> Of course, you could chisel it out by hand... ;->
>
>
>
> -----BEGIN PGP SIGNATURE-----
> Version: PGP 7.1
>
> iQA/AwUBQuhQWgIk7T39FC4ZEQK+egCfbxqaNfTqcRYUM/oIH9XK0uemHPkAoKsn
> AR0dz5siFHrBk+MLIXGwfGcu
> =zSTg
> -----END PGP SIGNATURE-----
>
> --
> -john
> wide-open at throttle dot info




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