here is information on different type of sawing
The Wire cutting is something that COULD be really good for your
application if they can drill a hole in 2 places and get the wire
threaded it will be cutting from the bottom this will meal all the dust
and mess will be in the hole rather than the kitchen.
Normally when cutting concrete the "wet" method is used where there is
a steady stream of water on the blade this provides cooling lubrication
and debris removal. You should be able to have plastic put down on all
of the surfaces and the doorways were well as above depending on the
working room they may be able to tent the work area one of the big
things 2 is air pressure.if they reduce the air pressure with a fan
running outside in the work area the dust will not be able to get very
far.
Ask to speak to people who have had the company make holes in their
houses to get an idea of the mess
http://www.cuttingtechnologies.com/c...-coring.html#2
CTI pioneered the use of the diamond cutting techniques shown below.
While each has its own unique advantages, all share an ability to
provide fast, clean and non-destructive removal of virtually any
construction material. If your project requires surgical precision, a
cost-effective alternative, or innovative engineering in sensitive
environments, CTI's cutting and coring techniques are your only choice.
DIAMOND WIRE SAWING
A motorized system of drive and guide wheels pulls a diamond-encrusted
wire around - and ultimately through - the object being cut. To cut
voids from a larger structure, pilot holes are first drilled into the
structure at the ends of each cutting plane. The wire is then fed
through the holes to create the loop that will sever the spoils from
the remaining form.
Typical Materials Cut:
Heavily-reinforced concrete, solid stainless steel and rock.
Cut Sizes:
Limitless dimensions and volume.
Typical Cutting Applications:
Crossovers in extremely thick structures.
Demolition of mass-concrete forms such as dams, towers, piers and
nuclear facilities.
Cutting of structures under water or otherwise inaccessible.
Cutting of fixtures with complex, irregular shapes.
Advantages:
Precise cuts with no over-cutting at corners and smooth finished
surfaces.
Lack of vibration, noise, dust and flying debris enables "clean"
demolition in sensitive and occupied areas.
Controlled cutting leaves remaining structures safely intact.
Quick, versatile, safe and economical alternative to conventional
demolition.
BLADE SAWING
Depending on the need, circular, diamond-tipped blades are mounted onto
a range of power units - from walk-behind slab saws for cutting level
surfaces, to track-mounted wall saws for cutting steep or vertical
inclines, or even handheld units for smaller cuts.
Typical Materials Cut:
Steel-reinforced concrete, pre-cast concrete, asphalt, stone walls and
cobblestone street beds.
Cut Sizes:
Up to 30" deep
Typical Cutting Applications:
Paved surfaces such as roads, runways and bridge decks.
Walls and suspended slabs such as floors and roofs.
Access-way breakthroughs for stairways, elevators, windows and doors.
Trenching and crossovers for mechanical services and cabling.
Advantages:
Precise cuts with smooth finished surfaces
Quick setup and sawing minimizes down time and traffic disruptions.
Variety of power sources to accommodate all available power and exhaust
requirements.
Cutting in confined spaces.
wrote:
On Wed, 27 Jul 2005 22:29:38 -0400, "miamicuse"
wrote:
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
You never yet said what is wrong with the sewer????