Water Proofing of Metro Railways both in Superstructure and in Tunnels-Quality Control in RCC Works

In Metro Railways R.C.C. construction is used for constructing dependable, durable, and cost effective infrastructure is provided. The Metro RCC work is properly designed, constructed and intelligently maintained, with improvement in knowledge about design methods and behaviour of material and optimised design methods are now being used for RCCSuperstructures and underground tunnel work. The control on construction quality is very rigid as expected indesign part as compared to routine RCC works in buildings. With the result that no major complaints of water seepage or leakage due to poor RCC work is reported from any Metro work since past 15 years in India.Still in our country the concept of quality control & quality assurance has not achieved its status as an essential expert service, like in foreign countries where this is the most powerful and highest paid team at site whereas in India the quality control is a job carried out like a routine by the lowest technical representative at site and- some time by a semi-skilled mate.