tom patton wrote:
Hi all I need to break up a section of concrete roughly 9 feet by 4 feet
from the corner of the wash area in front of my garage to get the
foundations for my house extension in.
The concrete was laid in 1974 and is roughly 12X12 feet with a drain in the
middle and diagonal expansion joints-it is approx 8 inches thick.
Is this a job for a self powered concrete breaker?.
Will cutting the slab with a Stihl saw help to make the concrete easier to
get in the skip?.
My brother in law is making dire predictions aboit the diamond blade hitting
steel reinforcing.
How deep should sawcuts be?.

Get an electric concrete breaker from some hire shop (Jewson or
whichever BM or a specialist). It will come with a couple of bits,
you will be charged for re-sharpening on top of the total cost but
will probably only need 1 bit. Just sit it on the concrete near an
edge and start breaking. If you need to cut the rebar, a pair of
bolt croppers or even a hammer and sharp chisel will do the job.
Don't try to cut it into very big lumps, which are hard to handle.