The new edition of this book is a detailed and updated study of the limit state design. It includes the chapter on “Limit State of Durability of Concrete to Environment” as well as the new provisions for design for shear rules for spacing of main steel in slabs, lateral steel in columns, and stirrups in beams. The book conforms to the provisions of the latest version of IS 456, namely IS 456: 2000. The book is intended for the undergraduate students of Civil Engineering and practising engineers.