The Delhi Metro Rail Corporation Ltd. (DMRC) is currently expanding the metro network which includes extensions of existing lines as well as the construction of new tunnels, ramps, viaducts and stations. DMRC invited the bids for contract package DC-05 which includes “Design & Construction of Twin Tunnel by shield TBM, Tunnel by Cut & Cover, Underground ramp at Derawal Nagar and Six underground stations viz. Derawal Nagar, Ghanta Ghar, Pulbangash, Sadar Bazar, Nabi Karim & Ramakrishna Ashram Marg Including Architectural Finishing, Water supply, Sanitary installation, Drainage works of stations on Janakpuri West to R.K. Ashram Corridor (Line -8 Ext.) of Phase-IV of Delhi MRTS project in Delhi, India”.
Pre-Tender Design Consultancy:
Gall Zeidler Consultants (GZ) provided pre-bid tender design consultancy services to the Client ITDC, which includes quantity estimation for segmental lining of TBM tunnel, NATM tunnels for cross passages and other associated structures based on tender documents and interpretation of the existing geotechnical data provided by DMRC for DC-05 package. The design includes preliminary geotechnical interpretation report, analyses of construction staging and structural design including quantity estimation of temporary and permanent works.