"Eric Hanson" wrote in message
m...
Hello,

I am planning on extending my pond in the coming weeks. The current
pond is about 22' x 7'. I want to dig an extension to make it an
L-shaped pond. The problem that I am having is that I would have to
"dig" through a 6" thick concrete walkway. And I have no idea how to
remove it safely and with a low cost. I quickly tried to pound it with
a sledgehammer, but it did little to the concrete. Not even a crack. I
quickly stopped because I was worried about the fish and vibrations.

Does anyone have any suggestions/comments?

Please see my site for images to get a better understanding of what I
am trying to do. I look forward to ANY responses. Thanks for your time

http://www.pobox.com/~ehanson/aquaria_pond.html

--
Eric Hanson



I've removed my fair share of concrete over the years (mostly in existing
buildings to install conduit). I would recommend renting a walk behind
concrete saw. Even if you use a garden hose connected to the saw (to cut
down on dust), it looks like you'll still need a plastic tarp to cover the
pond. Make 2 cuts across the sidewalk as far as you can. Since you won't
be able to make complete cuts across the sidewalk, I'd make two lengthwise
cuts (as opposed to one lengthwise cut down the center of the sidewalk),
the first as close to the pond as the machine will allow. The other just
split the difference between the first cut and the other edge. When making
the cuts, be _sure_ that you cut all the way through the concrete......the
concrete will _not_ break up easily with a sledge hammer if you don't.

Once the cuts are made, after two or three smacks with a sledge hammer,
the concrete will start to crack and break up. Continue until the pieces
are a managable size. If there is wire mesh in the concrete you will need
some bolt cutters to cut it as you lift the pieces out. Good luck.