RIICWD533E - Prepare detailed design of civil concrete structures You are working in an engineering design consultancy and have been asked by the senior engineer to design the beams that will be supporting reinforced concrete slabs in a multi storey commercial complex. The client wants the roof of the building to be an open terrace area under trussed light roof cover. The area has a staircase leading to it and so it will be used for floor type activities. The external beams along grids A and D will support wall cladding on the floors and a parapet on the roof