oktopusinc wrote:
I am doing a job in a building that has just been built. The concrete
floor has been poured 10mm low in places and 21mm high in others -
does anyone know the tolerances in British standards for poured
concrete. I may make a clai if they are over the limits.

Who laid the floor? - whoever it was, get them back and tell them to get it
fixed...there are no such thing as tolerances in pouring concrete, the idea
is to stop when it's full to the desired level, although if this 30mm
deviance is over a large area, IE, the floor area of a house, then this is
generally accepted.

BTW, 10mm and 21mm lower and higher than what exactly?