Search

Shear walls have extremely high in-plane strength and stiffness and also can counter heavy lateral loads making them quite advantageous in high-rise buildings. It is suggested to incorporate them in structures built in the places where there are chances of large intensity earthquakes or high winds. Positioning of the shear wall plays a very critical task in an asymmetric and irregular building subjected to earthquake forces. In our study, the main aim is to locate the advantageous position of the shear wall in Y-shaped asymmetric and irregular G+14 building in zone IV. The study is done by using a software package, CSI ETABS ver. 18.0.2. We have carried out Response Spectrum Analysis and Time History Analysis for this study. In this study, fourteen test models with unique location of shear wall are considered and parameters such as Time Period, Storey Displacement, Static Eccentricity, Storey Drift, Joint Displacement, Base Shear, and Base Force, are compared with the bare model. Thus, the best location of shear wall is suggested based on models having least static eccentricity, minimum displacement, Minimum drift, Minimum time period, Minimum joint displacement and Maximum base shear. [ABSTRACT FROM AUTHOR]

In India, transportation sector is growing fast and the number of vehicles on Indian roads is increasing at a rate more than 7 percent a year. During the period of 50 years from 1951 to 2001, the number of vehicles has increased from 0.3 million to 43 million i.e. an increase of almost 143 times. This has led to overcrowded roads and noise pollution. The transportation sector is one of the major contributors to noise in urban areas, accounting to as much as 55 percent of total noise on the arterials. Interrupted traffic flow noise is associated with the typical congested conditions in the urban area and has different characteristics from the traffic noise generated by free flow traffic on rural roads. These differences arise from the various traffic flow characteristics such as heterogeneity of traffic, flow speeds etc., which is in contrast to traffic on rural roads, where the flow is generally continuous. In this paper, analytical modelling has been used for predicting road traffic noise. Two models namely FHWA (Federal Highway Administration), and CORTN (Calculation of Road Traffic Noise) were applied. The data collected at ten different locations selected on the basis of land usages in urban areas of Lucknow, a historical city in India has been analyzed and utilized for modeling purpose. It was observed that predicted noise levels using a modified FHWA model are more close to observed noise levels than the noise levels predicted by CORTN Model. [ABSTRACT FROM AUTHOR]