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