Geodetic Engineering (21CV32)

Geodetic Engineering

Course Code 21CV32 
CIE Marks 50
Teaching Hours/Week (L:T:P:S) 2:2:2:0 
SEE Marks 50
Total Hours of Pedagogy 50 
Total Marks 100
Credits 4 
Exam Hours 03

Module-1

Introduction to Surveying: Importance of surveying in Civil Engineering, Concepts of plane and geodetic surveying Principles of surveying –Plans and maps – Surveying equipment’s, Meridians, Bearings, Dip, Declination, Local attraction, Calculation of bearings and included angles. Compass surveying and Plane Table Surveying Compass surveying: Prismatic and surveyor’s compasses, temporary adjustments. Plane Table Surveying: plane table and accessories, advantages and disadvantages of plane table survey, method of plotting - radiation, intersection, traversing, resection, two point and three point method

Module-2

Levelling – Principles and basic definitions – Types of Levels – Types of adjustments and objectives – Types of levelling – Simple, Differential, Fly, Reciprocal, Profile, Cross sectioning – Booking of levels – Rise & fall and H. I methods (Numerical) Areas and volumes: Measurement of area – by dividing the area into geometrical figures, area from offsets, mid ordinate rule, trapezoidal and Simpsons one third rule, area from co-ordinates, introduction to planimeter, digital planimeter. Measurement of volumes-trapezoidal and prismoidal formula.

Module-3

Theodolite Surveying: Theodolite and types, fundamental axes and parts of theodolite, temporary adjustments of transit theodolite, Horizontal and Vertical angle measurements by repetition and reiteration Trigonometric levelling: Single and Double plane for finding elevation of objects Computation of distances and elevations using Tacheometric method.

Module-4

Curve Surveying: Curves – Necessity – Types, Simple curves, Elements , Designation of curves, Setting out simple curves by linear methods (numerical problems on offsets from long chord & chord produced method), Setting out curves by Rankine’s deflection angle method (numerical problems). Compound curves, Elements, Design of compound curves, Setting out of compound curves (numerical problems). Reverse curve between two parallel straights (numerical problems on Equal radius and unequal radius). Transition curves Characteristics, numerical problems on Length ofTransition curve, Vertical curves –Types – (theory).

Module-5

Photogrammetry and aerial survey: Introduction, definitions, basics principles, methods, importance of scale, height, applications. Remote sensing: Introduction, Principle of Remote sensing, EMR, types, resolutions, types of satellites, type of sensors, LIDAR, visual and digital image processing and its applications. GlobalPositioning System: Definition, Principles of GPS and applications. Geographical Information System: Introduction and principle of Geographical Information System, components of GIS, applications Advanced instrumentation in surveying: classification, measuring principles, Electronic theodolite, EDM, Total Station, Drones

LABORATORY EXPERIMENTS

1. Study of various instruments used for surveying, namely chain, tape, Compass,

2. Dumpy level, Auto-level, Theodolite, Tacheometer, Total station and GPS. To find the distance between two points shown in the field using method of pacing, chaining and taping.

3. To set regular geometric figures (Hexagon and Pentagon) using chain tape and accessories.

4. To set regular geometric figures (Hexagon and Pentagon) using prismatic compass, given the bearing of one line.

5. Study of use of Dumpy level and to determine the different in elevation between two points by differential levelling using Dumpy level

6. To find the true difference in elevation between two points situated far apart by using Reciprocal levelling.

7. Trigonometrical levelling: Single plane method and Double plane method

8. Measurement of horizontal angle using theodolite by: i) Method of Repetition and ii) Reiteration method.

9. Setting simple circular curve-Instrumental method,

10. Setting compound curve using theodolite

11. Plane table : Setting, orientation, radiation, intersection

12. Demo: Total station, GPS

Suggested Learning Resources:
Books

1. Surveying & levelling Vol. I ,II & III, B. C. Punmia, Laxmi Publications; seventeenth edition (2016)

2. Advanced Surveying: Total Station, GPS, GIS & Remote Sensing by Pearson 2017 by GopiSatheesh, R.Sathikumar, N. Madhu

3. Surveying Vol.I& II, S. K. Duggal, McGraw Hill Education; Fourth edition (2017)

4. Surveying and Levelling, R. Subramanian , second edition, 2012, Oxford University Press;

5. Engineering Surveying, Schofield and Breach, 6th edition, Butterworth-Heinemann (Elsevier publication, 2007)

6. Surveying , A Banister, S Raymond, R Baker, 7th edition, Pearson , New Delhi

Web links and Video Lectures (e-Resources):

 NPTEL courses