Unit 1
Introduction – classification of surveys – reconnaissance – principle of working from whole to part – provision of control – conventional signs
Chain survey – instruments – principles of chain survey – field book – plotting – tie line and check line.
Compass survey – types of compass – types of bearings – dip and declination – local attraction – traversing – plotting – error of closure.
Plane table survey – two point problem – three point problem – errors in plane tabling.