Water is one of the most important things to understand in concrete work. It is also one of the sneakiest. Concrete actually needs water to become strong. Without water, concrete would not cure properly. But once concrete is placed, water needs to be controlled. When water ends up in the wrong place, sits too long, freezes, or has nowhere to go, it can start causing problems. That is where drainage and pressure come in. Water is the source. Drainage is the exit plan. Pressure