"Proctologically Violated©®" wrote:

I think he might have in mind a scaffolding that would actually cover the
whole area *under* the deck (about 1 foot under), to catch the debris as it
comes off.
--

If that's the case, how will he manage to break up the slab, cut the
rebar and remove the concrete without damaging the scaffolding? It would
need some sort of sacrificial CDX plywood deck on top of it or similar
to protect the scaffolding and that is in all probability not worth the
effort.

Pete C.