I am currently having a rear extension build. 5m across extending 4m into garden. They are about 1.4 m deep. Builder plans to mix his own concrete and pour mnaually. Taking the size and depth into consideration surely this will take for ever? I am not in the trade so have no idea so perhaps not. If however this is the case taking that into consideration is it conceivable that certain layers/sections will begin to cure quicker then others. I know nothing about building but could this pose a problem if I effectively end up with a layered/sectioned foundation rather then a solid block.???
Do I need to worry or question?. Not trying to undermine in anyway just would appreictae any advise. Thanks