Fly Ash bricks are alternative to burnt clay bricks in the construction sector in India. At this time India is witnessing a new phase in development. With rapid economic growth and high rate of urbanisation. Construction provides the direct means for the development, expansion, improvement and maintenance of human settlements is particular and economic growth in general. Construction activity accounts for more than 50% of the development outlays in India. Building construction costs are increasing at rates which are So per cent over inflation.