Variation of Reinforcement at First Floor of Six and Ten Storied Buildings

Abstract

We designed a six and a ten storied buildings in a same area (15m X 7.5m) and also in a same seismic zone. We have followed the ACI code, UBC-1994 and BNBC-2006 to build up the structures. We have endeavored our best and put an end of our project. We have used ETABS Software for design purposes. The design process of structural planning and design requires not only imagination and conceptual thinking but also sound knowledge of science of structural engineering besides the knowledge of practical aspects, such as recent design codes, bye laws, backed up by ample experience, intuition and judgment. The purpose of standards is to ensure and enhance the safety, keeping careful balance between economy and safety. Generally, a building structure is the combination of column, beam and slab. The detailing of these are done by Auto CAD. We found out the steel quantity of them and clarify the difference of required steel for two buildings. We have find out the quantity of steel which is required in a floor and also costing of steel for both buildings. In terms of column at first floor 336kg more reinforcement is needed for ten storied. For beam this value is 820kg and for slab it is 1656kg. We have gotten 77.10% more reinforcement required at first floor for ten storied buildings and it should be usual practice. In amount there are 212,400 BDT more need in terms of ten storied building at first floor.