Geomatics Engineering

Geomatics Engineering for GATE Civil Engineering, one topic per lesson: the theory in plain words, the formulas, a solved example, and GATE-style questions (MCQ, MSQ and NAT) whose numerical answers are recomputed by a program when the site is built.

Start the first lesson

1Surveying Basics

Distance Measurement, Levelling and ErrorsPrinciples of surveying, chain and tape corrections, levelling with height of instrument and rise-and-fall methods, curvature and refraction, reciprocal levelling, and theory of errors.

2Angles and Control

Compass, Theodolite and TraversingBearings (WCB and quadrantal), magnetic declination and local attraction, theodolite measurement, latitudes and departures, closing error, Bowditch and transit rules, and area by coordinates.

3Curves and Heights

Curves, Tacheometry and ContouringSimple circular curve elements and setting out (Rankine's method), degree of curve, tacheometric distance and elevation formulas, contours and their characteristics, and volumes of earthwork.

4Modern Surveying

Photogrammetry, Remote Sensing and GPSScale of vertical photographs, relief displacement, overlap and number of photographs, parallax heights, remote sensing principles and resolutions, GIS basics, GPS and total station.