This document is an explanatory handbook that supplements the code of practice for the structural use of concrete. (See IRRD Abstract No 205514). It is presented under the same headings as the code itself, which are as follows:-1. General.2. Design: objectives and general recommendations. 3. Design and detailing: reinforced concrete. 4. Design and detailing: prestressed concrete. 5. Design and detailing: precast and plain concrete construction. 6. Specification and workmanship: concrete. 7. Specification and workmanship: reinforcement. 8. Specification and workmanship: prestressing tendons. 9. Inspection and testing of structures and components. 10. Fire resistance. 11. Autoclaved aerated concrete. 12. High alumina cement concrete. Comments on methods of compliance with serviceability criteria by direct calculation are appended.