i) Contractors required registration in civil of class s I, IA, II, III, IV&IVA shall be complete at least 50% works of Water Supply &Sewerage related works of the total required work done or at least one sizable work related with water supply and sewerage work where the value of work is more than the maximum limit of the next two lower stage category in which contractor seek registration e.g. if Contractor required Civil registration of class I (unlimited amount), he should essentially be completed the single works of WS & Sewerage for the maximum amount of class II works(Rs. 750 lakhs ).during last three years. .Similar type of requirement is essential for other class registration.

ii) For registration in Mechanical and Electrical category for A, B & C class, Contractor shall complete at least 50% works related with the Water Supply and Sewerage works of the total required work done or any one sizable work related with water supply and sewerage works where the value of work is more than the maximum limit of the next two lower stage category in which contractor seek registration. E.g. if contractor required registration in Electrical Mechanical category of class A (unlimited amount), he should essentially be completed the single works of Electrical & Mechanical related with WS & Sewerage for the maximum amount of class C works (Rs. 25 lakhs). During last three years. Similar type of requirement is essential for other class of registration.

iii) For calculation of required work done if contractor has submitted only Operation and maintenance works, or/and only reform works then these type of works cannot be considered. However if the capital expenditure is involved while executing the operation and maintenance works and Reform works then amount incurred on capital expenditure will be considered for work done during last three years.