ABSTRACT
The case study deals with the construction of underground Metro Station at Sadar Bazar, Delhi, India. The purpose of this case study is to put forward various value engineering alternatives that have been explored to successful encounter the adverse conditions at the Sadar Bazar construction site, including but not limited to: highly complex geology, shallow water table, dilapidated building conditions, narrow road width and congested traffic.
It is further concluded that a detailed in-depth study of the following case study shall work as a ready reckoner and would assist the engineer in making wise deliberations at such complex worksites, for the construction methodology designed for the Sadar Bazar station is a classy hybrid of almost all available technologies: cut & cover (top down and bottom up), secant pile, soldier pile, TBM drive through, NATM, trench cutters, use of Steel Fibre Reinforced Concrete for TBM segment lining and to top it all, is an indigenous effort to come up with an innovative solution for D-wall construction.
