The objective of this paper is to device steps and implement it for old structures from the point of 4R's (Reduce, Recycle, Reuse and Recovery) for proper segregation and quantification of the different components of demolition waste. The steps are devised so as to segregate demolition waste at the site for reusing Brick and Mortar (B&M) and Recycle RCA i.e. Recycled Concrete Aggregate. The first part of the paper gives the introduction to the type of construction which has been adopted from about 30 to 40 years and the scenario now in Bengaluru, the reasons for it and why demolition are increasing which is giving rise to a lot of demolition waste. Hence based on the type of construction, the steps have been devised. The steps has been put in place to segregate the components into categories based on type of old structures in Bengaluru. After segregation the various components are to be quantified so that we get the quantity of each component of demolition. In the next part an attempt has been made to relate quantity to the size of the civil structure taking into consideration the standard sites and the built up areas which are being currently demolished). After quantifying, the type of components are identified and a study is made to define them with respect to the site size and built-up area.

Demolition, Quantification, Segregation, Brick and Mortar, Recycled Concrete Aggregate.