When we put a 2 poster in the yard last year we smashed the concrete out to make 1m3 piers for the posts to go on, nice job...... NOT!!! Disc cut the 6" thick reinforced concrete and snip the bars, drive mini digger in there digging it out, build up rebar cages that had to go in the hole in such a way so the draw bolts don't hit the rebar, the insurance man was well happy with my overkill with the holes and the rebar cages
We worked it out that it would have cost a client about £5k to have done from start to finish
