Because of urbanization, the land price becomes high, and the space in the core cities of Nepal are not available for constructing new facilities. Therefore, the trend of converting residential buildings to public buildings is increasing. Here in this study, the existing non-engineered building that survived the 2015 Nepal Gorkha earthquake that intended to shift its occupancy from residential to the hospital was evaluated. The building was assessed considering the infilled and bare frame and reevaluated the ferrocement retrofitted building using JBDPA, 2001 and Nonlinear Pushover Analysis. Three different techniques of the retrofit were considered (1-partial retrofit, 2-whole wall retrofit, and 3-partial retrofit with some non-retrofitted additional walls). The structural performance of the third types of retrofitting techniques was found to be best. To elaborate on the necessity of retrofit for changing the functionality. Three different cases for the same target building were considered, using Nonlinear Pushover Analysis. Case A as a residential building without retrofit, Case B as a hospital building without retrofit (that depicts the current scenario of Nepal), and Case C as a hospital building with a retrofit. The recent 2015 earthquake and NBC 105 demand curves used for this study. Case A found to be safe in the 2015 Gorkha earthquake and satisfied code provision, whereas case B could not satisfy any of the demand, and case C satisfied both. The result of analysis could capture the real field scenario of Gorkha earthquakes. Many buildings of case B types collapsed during the earthquake. However, Case C type building remain safer after the earthquake. The result of the case study implies that many existing non-engineered buildings by the recent earthquake are in a vulnerable state and needs a retrofit. In the same way, this thesis identifies the retrofitting is urgent need before switching the occupancy of the buildings.
Keywords: FC-Retrofit, Functionality change, Non-engineered Buildings.