India, March 2 -- The Delhi government has issued a tender to conduct a geotechnical survey between the upcoming Common Central Secretariat and Indraprastha metro stations for the proposed extension of the Magenta Line from RK Ashram Marg to Indraprastha.

Officials said construction on the Delhi Metro Rail Corporation (DMRC) project will begin once the study is complete. This survey precedes civil construction and will assess the soil profile and groundwater conditions along the high-security Lutyens' Delhi zone before tunnel boring machines (TBM) can be deployed.

A tender for Rs.54.84 lakh has been floated and will open on March 9. The survey must be completed within 120 days of awarding the tender, a copy of which HT has seen.

The 9....