In article ,
imanc wrote:

1) Getting through the brick foundation is proving extremely challengingusing
a cold chisel and standard hammer drill. I've managed to removetwo bricks
from one of the holes, and have produced a ~7inch hole. I'mtrying to get at
least an 18" hole, so the posts can be rock solid.

You can get a heavy, long, steel chisel type affair -- I *think* that
this is what I mean:

http://www.wickes.co.uk/professional...ar/invt/190344
/

John