TA 101: Technical Arts II Dr. Prishati Raychowdhury Department of Civil Engineering IIT Kanpur Office: FB 336; Phone:

Why to learn Technical Art? Can you describe this object in words to someone so that they can manufacture it? Diesel Engine Block (4-Cylinder) Not easy!

A Machine blog.pactapp.com

A Toy

Car/Train/Airplane

A Building P. K. Kelkar Library, IITK

A Bridge Howrah Bridge

A Bridge Golden Gate Bridge

A Dam Hoover Dam

Urban Infrastructure

 DESIGNERS may have been a single person or a team of few  Design had to be COMMUNICATED to those building it (BUILDER/MANUFACTURERS)  COMMUNICATION could have been possible only through ‘SKETCHES’ or ‘DRAWINGS’

Goal of Engineering Drawing To convey all the required information that will allow a manufacturer to manufacture a product A good drawing should.. Include information about a product on its geometry, dimension, material, finishing, and any other details necessary to produce the object Be unambiguous, complete, suitable for duplication, language independent, and conforms to standards

History of Technical Drawing  Monge was a French mathematician and served as the Minister of the Marine during the French Revolution  He was the inventor of descriptive geometry (or Technical Drawing/ Drafting)  Pictures, sketches were used to communicate but there were no uniformity  Architects, builders, engineers, designers had difficulty in understanding figures  Monge formalized the TECHNICAL DRAWINGS, what we know as ORTHOGRAPHIC PROJECTIONS Gaspard Monge ( )

TA 101: Course Objective To learn the fundamentals of Technical Drawing in THEORY and PRACTICE using: Free hand sketching Drafting with help of hand-held drafting tools Computer Aided Drafting (AutoCAD)

When and Where? Lecture: T 3-4 pm, L-7 Th 2-3 pm, L-7 Lab: M-Th 10 am – 1 pm, Northern lab, Drawing hall o The class has been divided into twelve batches B1 to B12 (~35 each) o Check DoAA web-site (or OARS) for your batch o Each batch has a tutor (faculty/Ph.D. student) and two teaching assistants (M.Tech/PhD/Dual-Degree students) o Tutor is your first contact person

Tutors

Course Outline Week Lecture Lab AssignmentsHome Assignments 1Lettering and constructionNone 2Orthographic projectionsLettering and constructionNone 3 Orthographic projections with dimensioning Orthographic projectionsLettering and construction 4Isometric views and projection Orthographic projections with dimensioning Orthographic projections 5Pictorial viewsIsometric views and projection Orthographic projections with dimensioning 6Missing views and linesPictorial views Isometric views and projection 7Sectional viewsMissing views and linesPictorial views 8Perspective viewsSectional views (AUTOCAD)Missing views and lines 9Lines and planes 1Perspective viewsSectional views 10Lines and planes 2Lines and planes 1Perspective views 11Auxiliary viewsLines and planes 2Lines and planes 1 12Intersection of solidsAuxiliary viewsLines and planes 2 13Development of surfacesIntersection of solidsAuxiliary views 14ReviewDevelopment of surfacesIntersection of solids Total LA = 13Total HA = 12 Total Lecture = 27

January 2016 Calendar MondayTuesdayWednesdayThursdayFridaySaturday Sunday 31 LECTURE PM (L7) 1 LECTURE 2 EXTRA CLASS 5 – 6 PM (L7) LECTURE PM (L7) 67 LECTURE PM (L7) LECTURE PM (L7) 1314 LECTURE PM (L7) LECTURE PM (L7) 2021 LECTURE PM (L7) REPUBLIC DAY 2728 LECTURE PM (L7) 29 MAKE-UP LAB FOR TUESDAY BATCHES 3031 LAB 1 (LETTERING AND CONSTRUCTION) AM-1.00 PM LAB 2 (ORTHOGRAPHIC PROJECTION) 10.00AM-1.00PM LAB 3 (ORTHOGRAPHIC PROJECTIONS WITH DIMENSIONS) LAB 4 (ISOMETRIC VIEWS AND PROJECTION) 10.00AM-1.00PM

February 2016 Calendar MondayTuesdayWednesdayThursdayFridaySaturday Sunday 12 LECTURE PM (L7) 34 LECTURE PM (L7) LECTURE PM (L7) 1011 LECTURE PM (L7) LECTURE PM (L7) 2425 LECTURE PM (L7) MID SEMESTER EXAMINATION LAB 5 (PICTORIAL VIEWS) 10.00AM-1.00PM LAB 7 (SECTIONAL VIEWES, AUTOCAD) 10.00AM-1.00PM LAB 6 (MISSING LINES & VIEWS) 10.00AM-1.00PM

March 2016 Calendar MondayTuesdayWednesdayThursdayFridaySaturday Sunday 291 LECTURE PM (L7) 2 3 LECTURE PM (L7) LECTURE PM (L7) 910 LECTURE PM (L7) LECTURE PM (L7) 1617 LECTURE PM (L7) HOLI 25 GOOD FRIDAY LECTURE PM (L7) 3031 LECTURE PM (L7) MID SEMESTER RECESS LAB 8 (PERSPECTIVE VIEW) 10.00AM-1.00PM LAB 9 (LINES AND PLANES 1) 10.00AM-1.00PM LAB 10 (LINES AND PLANES 2) 10.00AM-1.00PM LAB 11 (AUXILLIARY PLANE) AM-1.00 PM

April 2016 Calendar MondayTuesdayWednesdayThursdayFridaySaturday Sunday LECTURE PM (L7) 67 LECTURE PM (L7) LECTURE PM (L7) 1314 LECTURE PM (L7) 15 RAM NAVAMI MAHAVIR JAYANTI END SEMESTER EXAMINATION LAB 12 (INTERSECTION OF SOLIDS) 10.00AM-1.00PM LAB 13 (DEVELOPMENT OF SURFACES) 10.00AM-1.00PM

Important Note !! Tomorrow we have an extra class Time: 5-6 pm Venue: L-7 After each class, lecture notes will be posted in my homepage:

Things you need to purchase The “Instruction Manual” containing general instructions, and lab and homework problems available at COPY POINT at Shopping Center The instruments and materials listed in the Instruction Manual Sketch-book for free-hand sketching and preparing solutions to lab & HW problems (Noble Bookstore, Tarun Bookstore or Copy Point)

Drawing Instruments A good quality drafter A large compass (150 mm), a bow compass with adjusting screws (100 mm) A large divider, a bow divider with adjusting screws (100 mm) A pair of set squares: 45°-45°, 30°-60° (250 mm, 2.5 mm thick) A protractor A ruler, 300 mm (steel or hard plastic) Good quality drawing pencils (2H, H, HB) A sharpener, a good quality eraser, a clean soft cloth, and a sticking tape A notebook containing A4 size graph sheets, plain sheets, and isometric grid sheets Regular drawing sheets (A3 size)

Drawing Instruments

Drawing Pencils SOFT HARD MEDIUM

Drawing Sheets

Important Note All labs on A3 DRAWING SHEETS (unless specified otherwise) All homework on A3 drawing sheets (unless specified otherwise) All sketches in TA101 Sketchbook GRID BOOK for proportional sketches

Important Note  Prepare well for the laboratory sessions in advance  Sketch free-hand solution to the problems (use graph sheet/sketch book) before going to the laboratory session  You need to submit this rough sketch along with your lab sheet at the end of each laboratory session (and this will carry weightage)  If you miss a lab for a valid reason (proper justification required), you can do a make-up lab with any other section on the same week  Once the solutions are posted, late submissions or make-up labs will NOT be permitted

Book TEXT BOOKS French, T. E., Vierck, C. J., Foster, R. J., Engineering Drawing and Graphic Design. Tata McGraw-Hill Edition, Fourteenth Edition, (Original edition: McGraw-Hill Book Company New York, Fourth Edition, 1984 : Available in Library) Bhatt, N. D., Elementary Engineering Drawing, Charoter Publishing, Anand, Thirty First Edition, REFERENCE BOOK Luzadder, W. J., Duff, J. M., Fundamentals of Engineering Drawing, Prentice-Hall India, New Delhi, Eleventh Edition, 1983.

Grading Policy ItemWeight Home assignment10% Lab assignment (including preparation)25% Mid-semester examination25% End-semester examination40%

Drawing Basics

Types of Lines Object/Dimension Construction/Projection Hidden Centerline Hinge line

Object Lines and Hidden Lines Object LineHidden Line

Center Lines Used to show centers of circles and arcs and to show the center of axis of circular or symmetrical forms

Construction Lines Construction Lines (Light) IMPORTANT NOTE: Object lines and construction lines should always be distinguishable You may use H for object lines and 2H for construction lines You should NOT erase the construction lines after drawing (in this course)

Lettering ‘Lettering’ is used to describe the size and other information necessary to manufacture the designed object Principles of Lettering: Each letter must be distinct No slant! The vertical axes passing through all letters are parallel. No slant! Each letter is made up of a series of single strokes Judging by the eye, the distance between the letters should be approximately equal Engineering lettering is commonly UPPERCASE H Pencil Use H Pencil for Letters and Number

Lettering May use guiding lines initially – Eventually should avoid using guiding lines A aA a

Lettering: Acute Angle Stroke Stroke the pencil in the acute angle direction. This will save the paper from tearing

Lettering: Pencil Strokes A

Why to take so much trouble? Drawings made in one country may be used for manufacturing parts or assembly in another country ! Need for STANDARDS ! (BIS, DIN, JIS, ASTM …)

Drawing a perpendicular L Q L Q R R1 Point not on a line

Perpendiculars to and from a line Point on a line L Q R R1 R L Q C A M R

Arc tangents to lines and arcs R1 R2 R1 + R R2 + R R1 R2 R – R1 R – R2 R R L L‘ R

Line and angle bisectors L

Dividing a line into several segments L

Acknowledgement Prof. N. N. Kishore, ME Prof. Anupam Saxena, ME Prof. Ashish Dutta, ME Prof. Vinod Vasudevan, CE Prof. Tarun Gupta, CE Mr. Ashwani Kumar, ME TAs and Tutors of TA 101

Wish You a Happy and Prosperous New Year..