ANALYSIS AND DESIGN OF A TWELVE STORIED HOSPITAL BUILDING SUBJECTED TO LATERAL LOAD

Abstract

It is very essential to consider the effects of lateral loads induced from blowing wind and occurring earthquakes in the design of reinforced concrete structures, especially for high-rise Buildings. When any design specifications and codes are not available in Bangladesh National Building Code (BNBC 1993), it is recommended to use ACI USD codes in practice. Thus, some cases of earthquakes which are found to be dominant and even more critical than wind effects need to special care in analysis and design and those can be treated with the ACI design codes. Depend on some factors defined by codes, in this study the wind and earthquake effects are studied in the building analysis according to the BNBC 1993 and specific design and detailing are done using ACI 318 code. In general, BNBC codes are implied for wind and earthquake load analysis and discussed to show all factors affecting in the design. A computer 3D model is generated to analyze the building frame behavior under wind pressure as defined in BNBC 1993 as well as equivalent static load method for earthquake loads. Nonlinear static analysis of building located at Dhaka of seismic zone II performed creating finite element 3D model of actual building size and results are discussed for the purpose of showing the effects of different facts. Few conclusions are drawn and several recommendations are suggested to improve the resistance of the structural systems of the building to resist efficiently the lateral loads.