The intent and focus of this exercise was to Design the structural detail and explore steel. This structure is taken from previous semester AD project which was originally a school building. A part of this project that is multipurpose hall, library, computer lab, science lab and toilet. Structure has curved arch roof. And structure is supported by a composite slab by using decking sheet and steel joist,Binder,girder etc. Further in details of stairs case, structural member details and joinary details.