Conducting Topographic Survey And Development Of Basin Information System For Vaigai Basin , Fixing Of Ground Control Point By Triangulation On Permanent Structures Using Three Dgps With 6 Hrs Observation Including Cost Of Labour Involved In Surveying , Rental Of Equipments , Transportation Charges , Post Processing Charges , Documentation Charges , Overhead Charges Etc . , Complete As Directed By Wrd Officials . , Fixing Of Additional Ground Control Point On Permanent Structures Using Dgps With 1 Hr Observation Including Cost Of Labour Involved In Surveying , Rental Of Equipments , Transportation Charges , Post Processing Charges , Documentation Charges , Overhead Charges Etc . , Complete As Directed By Wrd Officials . , Fixing Of Bench Mark With 3 Hrs Observation On Permanent Structures Including Cost Of Labour Involved In Surveying , Rental Of Equipments , Transportation Charges , Post Processing Charges , Documentation Charges , Overhead Charges Etc . , Complete As Directed By Wrd Officials . , Taking River Cross Section Which Includes , But Is Not Limited To , Surveying And Recording The Elevations And Coordinates . The River Cross Section Shall Be Taken Perpendicular To The General Alignment Of The River At Every 2 Km Longitudinal Interval; ( I ) Every 5 Meters Above The Water Level . ( Ii ) Every 2 M Below The Water Level , ( Iii ) At The Centre Of The River Including The Water Level , ( Iv ) The Left And Right Limits Of The River Width Their Invert Levels And Water Levels ( V ) The Top Of Bank On Both Left And Right Sides Of The River ( Vi ) The Widths Of The Top Of Banks On Both Sides Of The River . ( Vii ) Either Continuing The Cross Section Surveys For 100 M Beyond The Embankments On Both Sides Of The River Embankments Or Where There Are No Embankments Extending The Survey Until The Ground Level Is 2 M Above The Normal Water Level Of The River . ( Viii ) Taking Levels Of The Irrigation Structures Including Cost Of Labour Involved In Surveying , Rental Of Equipments , Transportation Charges , Post Processing Charges , Documentation Charges , Overhead Charges Etc . , Complete As Directed By Wrd Officials . Note: The River Alignment Drawing Will Be Given By Wrd Officials . , Taking Tank Cross Section At Inlet And Outlet Of The Tank Which Includes , But Is Not Limited To , Surveying And Recording The Elevations And Coordinates . ( I ) Every 5 Meters Above The Water Level . ( Ii ) Every 2 M Below The Water Level , ( Iii ) At The Centre Of The Channel Including The Water Level , ( Iv ) The Left And Right Limits Of The Channel Width Their Invert Levels And Water Levels ( V ) The Top Of Bank On Both Left And Right Sides Of The Channel ( Vi ) The Widths Of The Top Of Banks On Both Sides Of The Channel . ( Vii ) Either Continuing The Cross Section Surveys For 10 M Beyond The Embankments On Both Sides Of The Channel Embankments ( Viii ) Taking Levels Of The Irrigation Structures Including Cost Of Labour Involved In Surveying , Rental Of Equipments , Transportation Charges , Post Processing Charges , Documentation Charges , Overhead Charges Etc . , Complete As Directed By Wrd Officials .
