Debnath et al. [4] have attempted to estimate the energy
requirements for different types of residential buildings in
India. Three types of buildings: single, double and multi storeyed
buildings have been examined. Energy consumption/
m2 of built-up area has been estimated as 3–5 GJ/m2 of
built-up area. Major conclusion of the study is that bricks,
cement and steel are the three major contributors to the
energy cost of building construction. In order to reduce
indirect energy use in a building, either alternative for
bricks, steel and cement have to be found or vigorous energy
conservation measures in these segments of industry have to
be initiated. Majumdar [7] reports some conceptual ideas in
reducing the energy use in buildings especially for heating,
cooling, ventilation and lighting in different climatic zones
of India. This study presents 41 case studies of buildings
designed by various architects incorporating energy saving
features in the design, without quantifying the energy savings/
consumption in these buildings.