You are right that i am talking about construction joint but not cold joints.
Thank you for your information but i have to tell about an idea answering my question.
In Turkey, for the beams, many engineers think that 1/4 of the span from the supports are good poits for construction...
As I know that it is preferred casting a slab in one time(one step).
But if you have to cast it more than one step(i.e. 2 or 3 step), where should be the cold joints on the slab and beams?
