This course addresses the design of new concrete infrastructure from a durability perspective. Durability design is approached as a process of assessing forms and severity of attack on a concrete structure, and providing the necessary resistance to those forms of attack. The course begins with a discussion of durability design as a limit state and an introduction to concrete material science. Specific durability topics include corrosion of metals in concrete, sulfate attack, freezing and thawing damage and alkali-aggregate reactions. Each durability topic is discussed in terms of exposure conditions, mechanisms of attack, influencing factors and protection methods.