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1.5, , ENGINEERING DRAWING - I, L T P, - - 8, , RATIONALE, Drawing is the language of engineers and technicians. Reading and interpreting engineering, drawing is their day to day responsibility. The subject is aimed at developing basic graphic skills, in the students so as to enable them to use these skills in preparation of engineering drawings,, their reading and interpretation. The emphasis, while imparting instructions, should be to, develop conceptual skills in the students following BIS SP 46 – 1988., Note:, i), ii), iii), , First angle projection is to be followed, Minimum of 18 sheets to be prepared and atleast 2 sheets on AutoCAD, Instructions relevant to various drawings may be given along with appropriate, demonstrations, before assigning drawing practice to students, , LEARNING OUTCOMES, After undergoing the subject, the students will be able to:, •, •, •, •, •, •, •, •, •, •, •, , Identify and use of different grades of pencils and other drafting instruments which are, used in engineering field, Draw free hand sketches of various kinds of objects., Utilize various types of lines used in engineering drawing., Read and apply different dimensioning methods on drawing of objects., Use different types of scales and their utilization in reading and reproducing drawings of, objects and maps., Draw 2 - dimensional view of different objects viewed from different angles, (orthographic views), Draw and interpret complete inner hidden details of an object which are otherwise not, visible in normal view, To make projections of Solid, Generate isometric (3D) drawing from different 2D (orthographic) views/sketches, Identify conventions for different engineering materials, symbols, sections of regular, objects and general fittings used in Civil and Electrical household appliances, Use basic commands of AutoCAD., , CORRECTED AND APPROVED BY BOARD OF TECHNICAL EDUCATION,U.P,LUCKNOW IN MEETING HELD ON, 10.07.2019 @RASHMI SONKAR, , Page 43
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DETAILED CONTENTS, 1., , Introduction to Engineering Drawing, 1.1, 1.2, 1.3, , 1.4, , 2., , 2.2, , 3., , 3.2, , (02 sheets), Scales –their needs and importance (theoretical instructions), type of scales,, definition of R.F. and length of scale, Drawing of plain and diagonal scales, , Orthographic Projections, 4.1, 4.2, 4.3, , 4.4, , 4.5, 4.6, , (01 sheet), , Necessity of dimensioning, method and principles of dimensioning (mainly, theoretical instructions), Dimensioning of overall sizes, circles, threaded holes, chamfered, surfaces,, angles, tapered surfaces, holes, equally spaced on P.C.D., counter sunk holes,, counter bored holes, cylindrical parts, narrow spaces and gaps, radii, curves and, arches, , Scales, 3.1, , 4., , Introduction to drawing instruments, materials, layout and sizes of drawing sheets, and drawing boards., Different types of lines in Engineering drawing as per BIS specifications, Practice of vertical, horizontal and inclined lines, geometrical figures such as, triangles, rectangles, circles, ellipses and curves, hexagonal, pentagon with the, help of drawing instruments., Free hand and instrumental lettering (Alphabet and numerals) – upper case, (Capital Letter), single stroke, vertical and inclined at 75 degree, series of 5,8,12, mm of free hand and instrumental lettering of height 25 to 35 mm in the ratio of, 7:4, , Dimensioning Technique, 2.1, , (03 sheets), , (06 sheets), , Theory of orthographic projections (Elaborate theoretical instructions), Projection of Points in different quadrant, Projection of Straight Line (1st and 3rd angle), 4.3.1. Line parallel to both the planes, 4.3.2. Line perpendicular to any one of the reference plane, 4.3.3. Line inclined to any one of the reference plane., Projection of Plane – Different lamina like square, rectangular, triangular and, circle inclined to one plane, parallel and perpendicular to another plane in 1 st, angle only, Three views of orthographic projection of different objects. (At least one sheet in, 3rd angle), Identification of surfaces, , CORRECTED AND APPROVED BY BOARD OF TECHNICAL EDUCATION,U.P,LUCKNOW IN MEETING HELD ON, 10.07.2019 @RASHMI SONKAR, , Page 44
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5, , Projection of Solid, 5.1., 5.2., 5.3, , 6., , 6.3, 6.4, 7., , *9., , (02 sheets), , Fundamentals of isometric projections and isometric scale., Isometric views of combination of regular solids like cylinder, cone, cube and, prism., , Common Symbols and Conventions used in Engineering, 8.1, 8.2, , (02 sheets), , Importance and salient features, Drawing of full section, half section, partial or broken out sections, Offset, sections, revolved sections and removed sections., Convention sectional representation of various materials, conventional breaks for, shafts, pipes, rectangular, square, angle, channel, rolled sections, Orthographic sectional views of different objects., , Isometric Views, 7.1, 7.2, , 8., , Definition and salient features of Solid, Types of Solid (Polyhedron and Solid of revolution), To make projections, sources, Top view, Front view and Side view of various, types of Solid., , Sections, 6.1, 6.2, , (02 sheets), , (02 sheets), , Civil Engineering sanitary fitting symbols, Electrical fitting symbols for domestic interior installations, , Introduction to AutoCAD, , (02 sheets), , Basic introduction and operational instructions of various commands in AutoCAD. At, least two sheets on AutoCAD of cube, cuboid, cone, pyramid, truncated cone and, pyramid, sphere and combination of above solids., * Auto CAD drawing will be evaluated internally by sessional marks and not by final, theory paper., INSTRUCTIONAL STRATEGY, Teacher should show model of realia of the component/part whose drawing is to be made., Emphasis should be given on cleanliness, dimensioning and layout of sheet. Focus should be on, proper selection of drawing instruments and their proper use. The institute should procure, AutoCAD or other engineering graphics software for practice in engineering drawings. Teachers, should undergo training in AutoCAD/Engineering Graphic. Separate labs for practice on, AutoCAD should be established., MEANS OF ASSESSMENT, CORRECTED AND APPROVED BY BOARD OF TECHNICAL EDUCATION,U.P,LUCKNOW IN MEETING HELD ON, 10.07.2019 @RASHMI SONKAR, , Page 45
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−, −, −, , Sketches, Drawing, Use of software, , RECOMMENDED BOOKS, 1., 2., 3., 4., 5., , A Text Book of Engineering Drawing by Surjit Singh; Dhanpat Rai & Co., Delhi, Engineering Drawing by PS Gill; SK Kataria& Sons, New Delhi, Elementary Engineering Drawing in First Angle Projection by ND Bhatt; Charotar, Publishing House Pvt. Ltd., Anand, Engineering Drawing I & II by JS Layall; Eagle Parkashan, Jalandhar, Engineering Drawing I by DK Goel, GBD Publication., , CORRECTED AND APPROVED BY BOARD OF TECHNICAL EDUCATION,U.P,LUCKNOW IN MEETING HELD ON, 10.07.2019 @RASHMI SONKAR, , Page 46
