4.1 LEVELLING (CONTD…)
TYPES OF LEVELLING – CHECK LEVELLING :
DEFINITION, FIELD PROCEDURE AND USE –
PROFILE LEVELLING OR LONGITUDINAL
SECTION(L.S) : DEFINITION, USE, FIELD
PROCEDURE AND PLOTTING THE PROFILE –
CROSS – SECTIONAL LEVELLING(C.S) : DEFINITION,
USE, FIELD PROCEDURE AND PLOTTING THE
CROSS-SECTION – SPECIMEN FIELD BOOK FOR
L.S AND C.S – RECIPROCAL LEVELLING :
DEFINITION, USE AND PROBLEMS ON DIFFERENCE
IN ELEVATION – CURVATURE AND REFRACTION :
EFFECTS, CORRECTION AND PROBLEMS – ERRORS
IN LEVELLING – FUNDAMENTAL LINES AND
DESIRED RELATIONSHIP BETWEEN THEM –
PERMANENT ADJUSTMENTS OF A DUMPY LEVEL :
PROCESS.