Points.

Finally.. and probably not before time, I spoke to the steelwork designer for Dance City. He is a dude caller Wille and works for Arup in Scotland.

I had a question over the suitability of the beams from which we suspend our motors from in the Dance Lab. And after one quick calculation he answered it with a "Yes, that's fine. You have a large safety factor in there. I'll email you the calc"

Awesome!!!

Lesson in this is: Stay away from architects, they are making it up. Speak to designers, they do the work!

And for those that are interested, here is the steelwork layout for the 3rd floor at DC: