This document provides design information and assumptions for the reinforced concrete design of a staircase. It includes the staircase dimensions, design loads, and a 5-step design process: 1) design of section, 2) bending moment reinforcement, 3) deflection check, 4) shear at supporting beam, and 5) critical shear from supporting beam. Reinforcement is specified as 16mm bars at 200mm centers longitudinally and 12mm bars at 300mm centers transversely. A detailing drawing then shows the reinforcement arrangement, anchorage, and staircase dimensions.