# COMPUTER AIDED ENGINEERING DRAWING (15CED14/15CED24 ) CBCS SCHEME AND SYLLABUS,NOTES

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COMPUTER AIDED ENGINEERING DRAWING
[As per Choice Based Credit System (CBCS) scheme]
(Effective from the academic year 2015 -2016)
SEMESTER - I/II

Subject Code -15CED14/15CED24 IA Marks 20
Number of Lecture Hours/Week -6 (2T + 4L)
Exam Marks 80
Total Number of Lecture Hours -84
Exam Hours -03
CREDITS - 04

Course objectives:
Engineering drawing is an important tool for all Engineers and for many
others professionals. It is the language of Engineers. Engineering Drawing
communicates all needed information from the engineer who designed a part
to the workers who will manufacture it.
The aim of the subject is to equip students with the fundamentals of
Computer Aided Engineering Drawing and to further the ability to
communicate information by graphical means.

Module -1
Introduction to Computer Aided Sketching
Introduction, Drawing Instruments and their uses, BISconventions, Lettering, Dimensioning and free hand practicing.Computer screen, layout of the software, standard toolbar/menus and description of most commonly used tool bars,navigational tools. Co-ordinate system and reference planes. ofHP,VP, RPP & LPP.  of 2D/3D environment. Selection of drawingsize and scale. Commands and creation of Lines, Co-ordinatepoints, axes, poly-lines, square, rectangle, polygons, splines,circles, ellipse, text, move, copy, off-set, mirror, rotate, trim,extend, break, chamfer, fillet, curves, constraints viz. tangency,parallelism, inclination and perpendicularity. Dimensioning, line
conventions, material conventions and lettering.
06 Hours

Module -2
Orthographic projections
Introduction, Definitions - Planes of projection, reference line and conventions employed, Projections of points in all the four quadrants, Projections of straight lines (located in First quadrant/first angle only), True and apparent lengths, True and apparent inclinations to reference planes (No application problems).
Orthographic Projections of Plane Surfaces (First Angle Projection Only)
Introduction, Definitions–projections of plane surfaces–triangle, square, rectangle, rhombus, pentagon, hexagon and circle, planes in different positions by change of position method only (No problems on punched plates and composite plates).
20Hours

Module-3
Projections of Solids (First angle Projection only)
Introduction, Definitions – Projections of right regular tetrahedron, hexahedron (cube), prisms, pyramids, cylinders and cones in different positions (No problems on octahedrons and combination solid).
28 Hours

Module-4
Sections And Development of Lateral Surfaces of Solids
Introduction, Section planes, Sections, Section views, Sectional views, Apparent shapes and True shapes of Sections of right regular prisms, pyramids, cylinders and cones resting with base on HP. (No problems on sections of solids)
Development of lateral surfaces of above solids, their frustums and truncations. (No problems on lateral surfaces of trays, tetrahedrons, spheres and transition pieces).
15Hours
Module-5
Isometric Projection (Using Isometric Scale Only)
Introduction, Isometric scale, Isometric projection of simple plane figures, Isometric projection of tetrahedron, hexahedron(cube), right regular prisms, pyramids, cylinders, cones, spheres, cut spheres and combination of solids (Maximum of three solids).
15 Hours

Course outcomes:
After studying this course,
1. Students will be able to demonstrate the usage of CAD software.
2. Students will be able to visualize and draw Orthographic projections,
Sections of solids and Isometric views of solids.
3. Students are evaluated for their ability in applying various concepts to solve
practical problems related to engineering drawing.

Question paper pattern:
1. Module -1 is only for practice and Internal Assessment and not for examination.
2. Question paper for each batch of students will be sent online by VTU and
batch. The answer sheets will have to be jointly evaluated by the Internal &
External examiners.
3. A maximum of THREE questions will be set as per the following pattern (No
mixing of questions from different Modules).
 Q. No. From Chapters Marks Allotted 1 Module 2(Choice between (Points+Lines or Planes) 25 2 Module 3 30 3 Module 4 or Module 5 25 4 Total 80

 Q. No. Solutions and Sketching in the Graph Book Computer Display and Printout Total Marks 1 10 15 25 2 12 18 30 3 13 12 25 Total Marks 35 45 80

Students have to submit the computer printouts and the sketches drawn on
the graph sheets at the end of the examination. Both Internal & External
examiners have to jointly evaluate the solutions (sketches) and computer
display & printouts of each student for 80 marks (35 marks for solutions &
sketches + 45 marks for computer display and printouts) and submit the
marks list along with the solution (sketches) on graph sheets & computer
printouts in separate covers.
4. Each batch must consist of a minimum of 10 students and a maximum of 12 students. 5. Examination can be conducted in parallel batches, if necessary.
5. Examination can be conducted in parallel batches, if necessary.

Text  Books:
1) Engineering Drawing - N.D. Bhatt & V.M. Panchal, 48th edition, 2005- Charotar Publishing House,       Gujarat.
2) "Computer Aided Engineering Drawing" by Dr C N Chandrappa, Dr B Sudheer Premkumar Dr. M H Annaiah, Fifth edition, New Age International Publishers.
Reference Books:
1) Computer Aided Engineering Drawing - S. Trymbaka Murthy, - I.K. International Publishing House Pvt. Ltd., New Delhi, 3rd  revised edition- 2006.
2) Engineering Graphics - K.R. Gopalakrishna, 32nd edition, 2005- Subash Publishers Bangalore.
3) Fundamentals of Engineering Drawing with an Introduction to Interactive Computer Graphics for Design and Production- Luzadder Warren J., Duff John M., Eastern Economy Edition, 2005- Prentice-Hall of India Pvt. Ltd., New Delhi.
4)  A Primer on Computer Aided Engineering Drawing-2006, Published by VTU, Belgaum.

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#### 1 comment:

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