Description :
Tenders for Real Time Monitoring Of Tunnel Vibration Of Tunnel And Strain Using Necessary Instruments For The East Bound Tunnel Ebt And West Bound Tunnel Wbt In The Stretch Retrofitting Zone In Ebt And Wbt Ch 9960m To Ch 9600m Between Esplanade And Sealdah Station And Periodic Monitoring Of Tunnel Using Laser Based Scanner For Other Locations Of The Underground Stretches Of The East West And North South Metro Corridors
