Re last and bendy concrete, jkarran said his slab bent, I said impossible. well I did get to have a quick reed of the link, and I was wrong
https://www.smorris.co.uk/userfiles/downloads/48/concrete-properties-define...
I am not clear if the loading was the weight of the unsupported member or a applied load, nor was it clear if it returned to shape if applied load. Above my pay grade and although interesting time dictates, one day I may find the time to read and understand something fully
however I am still to be sold on the amount of bend after casting, but not knowing the strengths at the time of lifting - or now it will not be proven ? can it?
However if the paper is to be beveled and it looked was well sourced, the said slab is still on the move! anyhow i was wrong
Nb It also talked about mass fill [no reinforcement] and we know J karrans slab had reinforcement.