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Lecture 1 Tuesday 3 March 2015 1

ENGINEERING GRAPHICS1E7

Lecture 1:Introduction

Lecturer: Dr. Bidisha Ghosh (bghosh@tcd.ie)

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Course Structure

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Assessment Examination: 65% of the oera!! mar"

3 sections (A, B and C)

2 questions per section

3 questions to be ansered, one !ro" each

section Dr B. Gosh : #ections A and B

Dr G. $%Donne&& : #ection C

#a$s 5% & assesse' $( course)or" ' AutoCAD

' *spice

' D.$. +utoria&s Dr B. Gosh

D.$. Assi-n"ent Dr G. $%Donne&&

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*ime *a$!e

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Lecture 1 Tuesday 3 March 2015 5

S(!!a$us + Han' ,ra)in- 1

Basic Construction

$rtho-raphic *roections

/so"etric *roections

Au0i&iar1 ies

*erspectie : $ne4*oint

*erspectie : +o4*oint

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Lecture 1 Tuesday 3 March 2015 6

Aim of the Course

5no&ed-e o! en-ineerin- drain-instru"ents

6nderstandin- and interpretation o!technica& drain-s

Abi&it1 to dee&op proections o! a 3Dobect

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Lecture 1 Tuesday 3 March 2015 7

Ea!uation

70a"ination (#ections A 8 B)

(293 o! the tota& e0a"ination "ars)

Continuous Assess"ent

(' o! the tota& course "ars)

!our drain- o!!ice tutoria&s

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Lecture 1 Tuesday 3 March 2015 8

Waterfall

M. C. Escher

+echnica&drain- is the

&an-ua-e o!en-ineers anddesi-ners

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Lecture 1 Tuesday 3 March 2015 9

*o.ics of Interest

Drain- /nstru"ents

Lines

Di"ensionin-

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Lecture 1 Tuesday 3 March 2015 10

'. Drain- Board

DRAWING INSTRUMENTS 1

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Lecture 1 Tuesday 3 March 2015 11

DRAWING INSTRUMENTS 2

A Series /ormats

0mm

A2 ;? =

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Lecture 1 Tuesday 3 March 2015 12

DRAWING INSTRUMENTS 3

La1out o! a Drain- #heet

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Lecture 1 Tuesday 3 March 2015 13

+ee square9 Dra!tin- @achine

DRAWING INSTRUMENTS 4

T d 3 M h 201 14

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Lecture 1 Tuesday 3 March 2015 14

#et squares (a pair)

DRAWING INSTRUMENTS 5

L t 1 T d 3 M h 2015 15

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Lecture 1 Tuesday 3 March 2015 15

/rre-u&ar9 rench cures

DRAWING INSTRUMENTS 6

L t 1 T d 3 M h 2015 16

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Lecture 1 Tuesday 3 March 2015 16

Co"passes

Diider

*rotractor

u&er9#ca&e

*enci&, 7raser

DRAWING INSTRUMENTS 7

L t 1 T d 3 M h 2015 17

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Lecture 1 Tuesday 3 March 2015 17

+*7# $ L/7#

3 @ain +1pes

DRAWING LINES 1

L t 1 T esda 3 March 2015 18

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Lecture 1 Tuesday 3 March 2015 18

Lines to aid understandin-

DRAWING LINES 2

Lecture 1 Tuesday 3 March 2015 19

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Lecture 1 Tuesday 3 March 2015 19

DIMENSIONING 1

Di"ension Lines (DL)

*osition o! DL

Lecture 1 Tuesday 3 March 2015 20

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Lecture 1 Tuesday 3 March 2015 20

DIMENSIONING 2

A&i-n"ent o! DL DL o! #"a&& eatures

Di"ensionin- An-&es Di"ensionin- Circ&es

Lecture 1 Tuesday 3 March 2015 21

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Lecture 1 Tuesday 3 March 2015 21

DIMENSIONING 3

Lecture 1 Tuesday 3 March 2015 22

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Lecture 1 Tuesday 3 March 2015 22

DIMENSIONING 4

Correct *ractice o! Di"ensionin-

Drawing should

only carrydimensions neededto manufacture

Lecture 1 Tuesday 3 March 2015 23

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Lecture 1 Tuesday 3 March 2015 23

Reference oo"s *echnica! ,rau-htsmanshi.

By 7anna $%Broin

En-ineerin- ,ra)in- )ith or"e'

Exam.!esBy@.A. *arer 8 . *icup

*echnica! ,ra)in-By. 7. Giesece, A. @itche&&,

E. C. #pencer, /. L. Ei&&, F. +. D1-don,

F. 7. oa

Lecture 1 Tuesday 3 March 2015 24

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Lecture 1 Tuesday 3 March 2015 24

Assi-nment for *hurs'a(

Get 1our instru"ents sorted4 bu1 the"

or borro the"