Title: Structural design of a G+4 reinforced concrete residential building

Abstract

This project is about the structural design and analysis of G+4 building considering all the effects the building receives in its service year. Structural design involves proportioning of structural members of the building and providing reinforcement which results safe and economical. This thesis works on the structural analysis and designed of G+4 residential building which has L shape plan layout with lift shaft and an opening in the slab. We design the building as a solid slab system. In the design process, we deal with the structural arrangement of the building. Then, we estimate the load of the components’, of the building. We analyze and design solid slab and the stair cases then after we compute the load transfer to the beams and also determine the lateral loads actions on the structure and the center of mass at which the lateral loads act at each floor of the building. After all we modeled the structure using ETABS software and loaded the gravity loads and lateral loads on the structure. Having analyzed the structure we obtained the analysis result. We check whether the center of mass and center of rigidity of the structure got close to each other in order to reduce the stresses to columns due to Torsional effect. Then we provide shear walls in the X and Y directions to get the CM and CR close to each other until satisfactory result is attained by trial and error. And then after we check the ultimate limit state and serviceability limit state of the structure. We use Coefficient method and Hillerborg strip method for slab analysis & design. Finally we design the structural components such as column, beams and footings using the analysis result from ETABS output. In addition to design of solid slab structural system, we also analyze and design of flat slab and ribbed slab for the same plan layout of the building. At the end, we drew reinforcement detailing for the structural components. The thesis will have an objective to develop new skill, strength our capacity on structural analysis and design as well as integrate different discipline for specified and justified problem. Beside this, it will create awareness for others to develop this project idea for civil engineering profession