Detailed Topographical Survey work using total station / DGPS & Drone for extension of North – South Corridor from Motera Stadium (Ch: 17343.443) to Mahatma Mandir (Ch: 39484.36) and extended GNLU – Gift City corridor Elevated Viaduct & Elevated Metro rail Stations (Twenty two numbers) including viaduct portion within the station and transition spans on either side of the stations and Depot – cum – workshop at Indroda under Ahmedabad Metro Rail Project, Phase – II