Corrigendum - Engagement Of Detail Design Consultant ( Ddc ) For Civil , Architectural And Building Services Including E And M Works For Danapur To Mithapur ( Ug And Elevated ) Corridor-I Of Phase-I Of Patna Mrts Project , Schedule A: Detailed Design Consultancy ( Architectural Design , E&M Design And Structural Proof Checking ) Of Elevated And Underground Stations And Structural Proof Checking Of Viaduct And Tunnels .