NEW DELHI (Metro Rail News): Cengrs Geotechnica through a subcontract from Afcons Infrastructure last week began geotechnical and geophysical investigation work for Package DC-05 of the Delhi Metro Magenta Line’s 28.92 km Janakpuri West – RK Ashram extension. This is the final civil package of this extension where work has started.
This 7.46 km underground section of the 65.1 km Delhi Metro Phase 4 project connects Derawal Nagar with RK Ashram via 6 stations at Derawal Nagar, Ghanta Ghar, Pulbangash (interchange with Red Line), Sadar Bazar, Nabi Karim & Ramakrishna Ashram Marg (interchange with Blue Line).
Afcons had won Package DC-05’s Rs. 2481.50 crore contract in January with a 42 month deadline and it has started organising machinery and manpower since then.
Cengrs will be drilling 110 exploratory boreholes through soil and rock upto 45 m depth, conducting 1160 permeability tests through soil and rock, 70 pressuremeter tests and 14 stand pipe piezometer tests. In addition, geophysical tests (electrical tomography and seismic refraction tests) will be performed along the length of the entire corridor.