Contouring & Measurement of Area and Volume
Introduction, Measurement of Area: Computation of Area of Geometrical Figures- Rectangle, Square, Triangle, Circle, Parallelogram, Trapezoid, Trapezium, Oblique Triangle, Area of a Segment, Regular Polygon. Computation of Area of Irregular Shape– Mid Ordinate Rule, Average Offset Rule, Trapezoidal Rule, Simpson’s One Third Rule. Measurement Of Volume : Computation of Volume of Irregular Shape– Trapezoidal Rule / End Area Method, Prismoidal / Simpson’s Rule
Topics
Compass is a survey instrument used for the measurement of horizontal angles and the bearing of a line of sight.Surveyor Compass and Prismatic Compass are discussed in detailed.
Levelling (Correction in Levelling, Distance of Visible Horizon, Reciprocal Leveling, ETC)
In levelling, we are details discuss about elevation & altitude, reduced level, mean sea level, bench marks(B.M), horizontal line, vertical line, level line, back sight reading, fore sight reading, intermediate sight reading, method to find reduced level, height of instrument, rise and fall method, inverted staff, correction required in levelling work, distance of visible horizon, reciprocal leveling, collimation error, angular / inclination error, sensitivity of bubble tube, the sensitivity of level tube increases with?.