MN 114 – Engineering drawing
INTRODUCTION
7.5 credits
Welcome
I will be your instructor for this course
About
• Mr. Msangi (Meng)
• Mining Engineer (UDSM, UBC)
• Experience: Training/Mining Industry
• E-mail: miningclasses@gmail.com
Overview
Course Schedule
Hours per
No. Activity Day Time Room Facilitator
Week
1 Lecture 3 Monday 14:00 – 17:00 FL-1-CIVE Mr. Msangi
2 Tutorial - Monday - FL-1-CIVE Mr. Msangi
Bsc. CPE,EE, ME, MPE, PE, REE
Course Description
• The course focus on representing technical bodies by considering:
• Drawing Standardization
• Principles of orthographic projections
• Free hand DRAWING techniques
• Isometric and machine drawing
Course objectives
• The course aims at providing students with:
• Engineering drawing knowledge
• Skills necessary to create and interpret engineering drawings
Course learning outcomes (LO)
• When you finish this course you should be able to:
• Produce proper engineering drawings (LO1)
• Make sketches and free-hand drawings of engineering entities (LO2)
• Make proper title block (LO3)
PREREUISITES
• This course has NO prerequisites:
Delivery mode
• Delivery of the course will be through lectures and reinforced with
tutorials.
Assessment
The assessment of Assessment Type Percentage
the course will be Test One (1) 15%
40 percent Test Two (2) 15%
coursework and 60 10 tutorials (Assignment) @ 1 10%
percent University University Examination (UE) 60%
Examination. Total 100%
Calendar
Week # Key Dates
3 Tutorial 01
4 Tutorial 02
5 Tutorial 03
6 Tutorial 04
7 Test 1
8 Tutorial 05
9 Tutorial 06
10,11 Tutorial 07, Tutorial 08
12 Test 2
13,14 Tutorial 09, Tutorial 10
Course contents
• Foundations of Representing Technical Bodies (1. Drawing
standardization)
• Drawing formats (paper sizes)
• Folding of drawing formats
• Types of lines
• Scales
• Lettering, drawing equipment, title block
Course contents cont.
• Foundations of Representing Technical Bodies (2. Principles of
Orthographic Projection)
• First angle and third angle orthographic projection
• The six principal views, Selection of appropriate number of views
• General rules of projection, layout of views on a drawing format
• Projecting features between views
Course contents cont.
• Foundations of Representing Technical Bodies (3. Techniques of
free-hand DRAWING)
• Free-hand drawing of machine parts in orthographic projection
• Sectioning
• Indication of cutting plane, hatching
• Rules of and practices in sectioning, types of sections
Course contents cont.
• Essential Problems in Descriptive Geometry (1. Isometric drawing)
• Construction of isometric drawing
• Curves in isometric drawing
• Isometric circles and arcs
Course contents cont.
• Essential Problems in Descriptive Geometry (2. Introduction to
oblique representation, development, dimensioning)
• General principles of dimensioning
• Types of dimensioning
• Dimensioning symbols
• Dimension & extension lines
Course contents cont.
• Machine Drawing (Screw threads)
• Standardization and types of screw threads
• Representation of internal and external threads
Resources
Resources
1994
ISBN – International
Standard Book Number
Resources
Resources
7th Edition
Resources
Resources
CANVAS
• Make sure you have an e-mail address (Gmail, yahoo, Hotmail, etc.)
• Take the link below and put it in any browser (chrome, Mozilla etc.)
• https://canvas.instructure.com/enroll/8C3HM9
• Make sure you press enter and you will be presented with the page
on the next slide
STEPS:
1. Enter your e-mail
address
2. Check I am a new user
radio button
1 3. Enter your full name
2 4. Check I agree to the
terms of use check box
5. Click Enroll in Course
3
6. Make sure you create a
4
CANVAS password
5
CANVAS cont.
• Visit the following link next time you want to login to your canvas
account
• https://canvas.instructure.com/login/canvas
• If you have a smartphone, you can download canvas student
application from play store (android users) or apple store (iPhone
users)
CANVAS cont.
• The followings will be available in canvas
• Lecture notes
• Tutorial and practice questions
• Continuous assessment for tutorials, test one and test two
• Don’t come to me asking for course notes, visit your canvas account.
Drawing Tools and Material
• Any kind of paper (rectangular grid paper, plain paper etc.)
• Most engineers use fine-line mechanical pencils
• Each mechanical pencil is designed to hold a specific lead size.
• Common lead sizes include 0.3 mm, 0.5 mm, 0.7 mm, and 0.9 mm.
• The lead size is the diameter of the lead.
• The best size for general usage is 0.5 mm, whereas 0.7 mm is good for
bolder stokes.
Drawing tools and material cont.
• An important advantage of mechanical over wooden pencils is that mechanical
pencils do not require sharpening.
• Pencil lead is available in different hardness grades
• The harder the lead, the lighter, sharper, and crisper the resulting line.
• Soft lead, on the other hand, results in darker lines that tend to smear easily.
Drawing tools and material cont.
• Medium grade leads (3H, 2H, H, F, HB, and B) are good for general-
purpose drafting, and HB is the most commonly used lead grade.
• A good eraser that does not tend to smudge is an important drawing
tool.
Drawing tools and material cont.
RANGE GRADES PURPOSE
Hard 9H, 8H, 7H, 6H, 5H, 4H Accuracy, precision
Medium 3H, 2H, H, F, HB, B General purpose
soft 2B, 3B, 4B, 5B, 6B, 7B Artistic rendering
Harder → Softer
Drawing tools and material cont.
Erasing shield
Eraser
• Essential items include
Resources cont. • Pencils (clutch and/or wood – cased)
• Scale rule
• Eraser and erasing shield
• Drawing set
• French curves
• Circle and ellipse template
• Adhesive tape (Old School)
