Abstract: Daylight is one of the important factors improving the quality of lifestyle and efficient building ergonomics. There are many software and websites, which provide us stereographic projections of any region at any geographical locations. These charts support us to understand solar azimuth and solar altitude angle and generate shadow angles at any specific time and month of the year. The selected study area is Hyderabad, India and the conclusions derived are the dimensions of horizontal shading devices as sunshades. The aim of this study is to derive and set standard horizontal shade devices in cardinal directions and inter-cardinal directions, which can provide shade for the window without allowing any direct sunlight to enter the building in selected site region. The limitation considered is the azimuth angle, which is to be a minimum and maximum angle for any month in every particular cardinal and inter-cardinal direction, and the altitude angle is considered minimum angle in the duration of 9:00 to 16:00 hours from the year 2016. This horizontal shading device would guide a metropolitan city to implement efficient shading device.
Keywords: Horizontal Shading device, sun azimuth and altitude angles, building orientation.