Framing for plinth above island, strong enough???

Finished plinth

Steel lined with fire board.

Plasterer in action !

Plaster boarding of ceiling .

Have waxed floor in utility room and back porch.

73 sheets if plaster board delivered!

Polished concrete floor process.
Hired planatery grinder and rust extract machines.

The planatery grinder made no impression whatsoever so resorted to angle grinder with diamond segmented disk.

Of course the dust extractor didn't fit the angle grinder!
With the surface now dressed and the agrigates exposed, the planatery grinder with 40grit diamond segments started to give a more polished finish.

The surface is then densified with chemical and looked a bit like this.

The diamond segments wore to almost zero.

After several passes at 50, 100, 200 and 400 grits the floor is looking like this.

The planatery grinder doesn't reach the corners or edges particularly well so they need cut in buy hand. 

Being smart I got a  7inch velcro backing disk and put it on the angle grinder. However the angle grinder has 2 speeds,  on and off! The resin pads flew off at full speed resulting in this...

So have purchased variable speed polisher which is just the ticket for doing the edge job.

Next will come waxing!

Concrete!
28 days till grinding and polishing!