Whether you are building a new house or addition, or fixing an existing problem on an existing house, the secret to moisture control for basements is, "do it right the first time", for as they used to say, "An ounce of prevention is worth a pound of cure" (At least "do it right the second time".)
Here are simple construction details in animation for a moisture-resistant basement from BuildaBetterHome.org.
Installing good drainage systems and making sure the ground slopes away from the foundation are two important steps in foundation construction...continued.
Carl Heldmann