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Optimization of Member Size and Materials for Multistoried RCC Buildings using ETABS
Optimization of structural cost can be achieved by optimizing the size of structural components as the cost of the material required in structural system for a multi-storeyed building makes 40-50 % of the overall cost of a typical RCC structure. Material required for construction varies with change in size of members. In the present study optimizing the size of structural components using ETABS has been achieved. The analysis and design has been done for G+9, G+11, G+13 and G+15 RCC structure for seismic zone V. The loading and all other relevant considerations are made for office building. For the analysis and design of a RCC structure, there are much software available in the market such as STAAD-Pro, ETABS, SAP, ANSYS etc. Among all the available software, ETABS has many advantages over its counterparts such as accurate analysis result, optimized design output, better user interface and availability of more number of Indian and International codes. Based on the output obtained from the detailed analysis, the optimized size of structural components for G+9, G+11, G+13 and G+15 RCC structure for seismic zone V are obtained. After getting the optimized size of structural components the cost of materials has been calculated and quantity wise cost of various structures has been given. It can help to forecast the project cost of RCC structures for various storeys to be designed in zone V with optimized size of structural components.
ETABS, optimization, RCC, Cost model, Quantity model.
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