Delhi (Metro Rail News): 4 Firms have submitted bids for a contract that entails conducting a geotechnical soil investigation for new metro lines including the Indore – Ujjain Metro, Mumbai Metro, and Delhi Metro.
Delhi Metro Rail Corporation (DMRC) floated tender for this contract in December 2024 with a 12-month deadline. Furthermore, technical bids were opened on January 1, 2025, to reveal that 4 firms have submitted bids for this contract.
Contract’s Scope of Work
This contract involves surveying work for 139 km of new metro lines in India, covering 6 corridors to help prepare Detailed Project Reports (DPRs).
| Project | Length |
| Mumbai Metro MRTS Lines | 30 km |
| Indore – Ujjain Metro | 46 km |
| Tughlakabad – Noida Sector 142 metro line | 15 km |
| Kundli – Sonipat metro line | 20 km |
| Samaypur Badli – Kundli metro line | 15 km |
| New Delhi Railway Station – New Ashok Nagar Metro Line | 13 km |
Bidders
- CEG Test House And Research Centre Pvt. Ltd.
- Cengrs Geotechnica Pvt Ltd.
- Independent Consultants & Technocrates (ICT)
- Techpro Engineers Pvt Ltd.
DMRC’s Brief Scope: Geo-Technical Investigation Works for Preparation of Detailed Project Reports (DPRs) for MRTS Projects.
Geotechnical Activities to be Performed
- Drilling boreholes with a diameter of 150 mm in various soil types to a depth of up to 30 meters.
- Performing Standard Penetration Tests (SPT) at 1.5-meter intervals within the boreholes, following the relevant IS Code of Practice, along with other in-situ tests as specified in the schedule.
- Extracting undisturbed soil samples at every change in strata, with a minimum of two samples per borehole, in compliance with IS standards.
- Measuring and documenting the groundwater table level upon completion of boring.
- Executing borehole drilling up to specified depths, including a maximum of 5 meters in intact hard rock (RQD >50%), 10 meters in weathered rock (RQD up to 50%), or 30 meters in soil (up to N=100), using a hydraulic or calyx rig by the wash boring method, as per the Engineer-in-Charge’s directions and the technical specifications.
- Conducting in-situ permeability tests in rocky formations and laboratory permeability tests for other soil types.
- Extracting rock core samples from boreholes and recording Rock Quality Designation (RQD).
- Performing all required laboratory tests on collected samples, following the prescribed schedule and technical specifications.
- Surveying borehole locations, determining elevation levels, and accurately plotting them on the alignment plan
