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ENG1100

Introduction to engineering design

Information Book On-campus Students Only Toowoomba Semester 1 2016

Published by University of Southern Queensland Toowoomba Queensland 4350 Australia

http://www.usq.edu.au

© University of Southern Queensland, 2016 S1. Copyrighted materials reproduced herein are used under the provisions of the Copyright Act 1968 as amended, or as a result of application to the copyright owner.

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise without prior permission.

http://www.usq.edu.au/

ENG1100- Introduction to engineering design 1

© University of Southern Queensland

Table of contents

Page

Course ENG1100 overview 1 Module 1 overview 2 Module 2 overview 3

Module 3 overview 4

Getting started 6

Introduction 7 Course resources 9

Study schedule 12

Assessment 14 Assignment submission 14 Assignment 1: Drafting 15 Assignment 2a: Design report 24 Assignment 2b: Design, Build and Test 28 Assignment 3: Drafting 33

ENG1100- Introduction to engineering design 2


Course ENG1100 overview

Students with

NO previous

drafting instruction should commence here

Students WITH previous drafting instruction should commence here

ALL students study this module

Module 1 (Study Book 1) Basic Drafting

Techniques

Module 2 (Study Book 2)

Specialist Drafting Techniques

Module 3 (Study Book 2)

Conceptual Design

ENG1100 – Introduction to engineering design 3


Module 1 overview

Basic Drafting Techniques

Pictorial Views Isometric Oblique/parallel

Orthographic Projection Dimensioning Sectioning Auxiliary

projection

Sketching Techniques using pencil and paper

4 ENG1100 – Introduction to engineering design


Module 2 overview

Specialist Drafting Techniques

CAD:

Use of Computer Aided Drafting Systems

Preparation of two-dimensional engineering

drawings using CAD

Surveying: Contour plans Traverse from field book entry

Civil 1 Structural steel

General building construction

Detailing of beams

Civil 2 Reinforced concrete Graphical representation Bending schedules

Mechanical Dimensional tolerancing Geometric tolerancing Surface finish notation

Electrical Schematic diagrams Common symbols to Australian standards Simple circuit diagrams



Module 3 overview

Conceptual Design

Design Methods

The Creative process

Deterrents to the Creative Process

Decision making

Human Factors in Design

Industrial design (provided online)

Sustainability in Engineering Design

(Life-Cycle Engineering)

(provided online)



Getting started The Current Students website <http://www.usq.edu.au/current-students/> provides links to essential information which will assist you in your studies at USQ. Use this site as a reference point to find information on: ● getting started

● organising enrolment

● assessment

● learning support

● student services

● student support

● opportunities

● graduation and beyond.

http://www.usq.edu.au/current-students/



Introduction We live in a world of change. The drive for this change could be multifaceted: demand for domestic appliances, improved safety, economic efficiency, new manufacturing techniques,

new material selection options, the environment, sustainability, energy efficiency, urban growth, transportation, politics, war/defence, etc. Almost all facets associated with these changes would need to be designed, drawn, analysed, specified, costed, built/manufactured, marketed and serviced. It is essential that, as future engineers, you have an awareness and some skills in the basic concepts of design including communication using drafting. ENG1100 will get you started at developing those skills. The course content is presented in three modules in two study books. (Refer to the previous pages for an overview of the course and modules.) This course is comprised of two discrete components, viz.

DESIGN and DRAFTING In reality, design and drafting are not as clearly separate as this course may suggest. There is significant integration of the two as they are used as parts of the one total design procedure. However, they will be treated separately in ENG1100 and assessed separately. The course has been prepared to give you exposure to the basic design process. The typical sequence of real-life events that the course deals with is:

You are faced with a problem.

One solution is to solve the problem with a design approach. (There are many facets

to solving problems and a design approach is one. During your studies throughout

your degree, you will encounter various approaches to problem solving)

There are always many solutions and you should determine the most effective of the

alternatives.

You should then be able to justify your selection.

You should have sufficient drafting skills to be able to present the solution

graphically in sufficient details to allow drafters to prepare working drawings.

Note! The study of both the design and the drafting segments of this course should

proceed concurrently.

Design requirements For this course, only design concepts will be required. Because you have not studied technical aspects of materials and the mechanical properties of components or other advanced engineering considerations, you will not be required to consider such details for

your design, although recognizing when a technical analysis is required is something to start to think about. This will, of course, free you to exercise a high degree of creativity and lateral thinking. You will be required to apply appropriate design methods and decision making techniques – and you will have to fully document the whole process leading to your solution. The alternatives

you discard after due consideration may be as useful to the process as the one you ultimately choose.



Note

Module 3 presents the material appropriate to the design component.

Drafting requirements To allow you to communicate your design graphically and meaningfully, you need considerable drafting skill and you must exhibit a high level of understanding of the drafting techniques and conventions. You must also be able to interpret a drawing in any of the

engineering disciplines. Therefore this course gives instruction, at a basic level, in Mechanical, Civil, Survey and Electrical Drafting. The drafting section comprises two modules, viz.:

Module 1 – Basic drafting techniques

Module 2 – Specialist drafting techniques

● Mechanical

● Civil

● Electrical

● Surveying In this course all drafting will be done in two methods:

1. freehand sketching

2. using a 2D CAD program. Refer to Study Book 1 Section 1.1 for further information on sketching and CAD techniques. Please note: Module 1 is specifically designed for those who have not previously studied technical

drawing to at least Year 10 (Qld High Schools) level. Those who have studied drafting

before may not need to study module 1 in this course. They may wish to use it as a refresher

course. However, Assignment 1 which covers basic drafting and design is to be

completed by all students. It should be noted that ENG1100 only requires 50% of total

marks for the course to achieve a passing grade, a pass in every individual assessment item

is not required. Those who have not studied drafting before should work carefully through Module 1

attempting the activities prescribed. These activities are formative only. There is no need to submit them for correction unless you wish to ask questions about them. Modules 2 and 3 must be studied by all students in this course. I hope you find the course interesting. Every endeavour is made to allow you to put your own

emphasis on the course according to the branch of engineering you are studying as your major. Assessment covers all aspects of the course and this reflects the intention to give students exposure to the various disciplines.



The teaching staff enjoy their involvement in the course and are happy to discuss any aspect

of the course with you. We hope for a high standard of work from students, so submit your very best efforts for assessment. More is said on assessment later in this introductory material.

On behalf of the teaching team I wish you an enjoyable and rewarding study.

Ray Malpress Course examiner

Course resources

Study materials for the drafting component

Equipment

Every job is made easier if you have the correct tools. The tools used in drafting are many

and varied. Some must be seen as essential and some as very useful aids though not essential. In the course we require you to use a computer-aided drafting package for the drafting component. It is desirable that students should have access to a 2D CAD software package of industry standard. This may be achieved in several ways including: ● use of CAD in your workplace

● possession of your own copy of a CAD package

● download software from Autodesk <http://students.autodesk.com> (Follow the Free Software for Students links on the site, register using your USQ email address. Use the ‘Forum for problems with downloading/installing AutoCAD’ on StudyDesk to seek advice or ask questions)

● other access – through friends, etc.

It is recommended to use the free AutoCAD version available from Autodesk. This software is

reliable and runs easily on most computers in the vast majority of cases. Another alternative is for you to check out the Internet. You may be able to locate a CAD

package through that avenue. Remember though you will need to familiarise yourself with the package you select and that it will need to cover drawings in all the areas covered in the course specifications. All assignments are to be submitted electronically via StudyDesk – more details for electronic submission are given at the beginning of each assignment. Freehand sketching is still a very important skill to acquire. Some people prefer to freehand sketch drawings before creating them on CAD. Engineering personnel need to be able to provide a freehand sketch of a solution to a problem to assist visualising ideas and

communicating them to others. It also helps identify any complications that may occur. You will be required to produce freehand sketches as part of Assignment 1.

http://students.autodesk.com/



The materials used in the freehand sketching are pencils and paper with associated

accessories.

Pencils Acceptable variations include: ● Standard wooden pencil – but buy a good brand, e.g. Staedler, Mars

● Drafting clutch pencil with 2 mm lead

● Fineline propelling/clutch pencil. Note that all of these require careful sharpening of the lead.

The lead grades I suggest you try are HB, B or 2B

Pencil sharpener You may use any pencil sharpener appropriate. Not all mechanical sharpeners are good for

sharpening drafting pencils. Experiment with options including a blade (such as a craft knife) to

prepare the point. In the extreme, you can use some fine grit emery paper to finish the point. Pay

attention to the effectiveness of the pencil you are using. Don’t be satisfied with a result from

an ill-prepared pencil when a better drawing can be achieved with a little extra effort preparing

the pencil. Drawing paper An ideal medium on which to produce a freehand sketch is prepared sketching paper either

orthogonal (squared) or isometric depending on the sketch to be prepared. Printable versions of grid sketching sheets can be downloaded from StudyDesk. When you purchase your text, some sketching paper is included – it may be enough for your purposes. Freehand sketches for Assignment 1 must be completed on the grid paper provided on the Study Desk. Eraser You will need a good quality eraser and a way to maintain a reasonable wedge-shaped end for

precise use.

Text

Engineering drawing (8th edn) by Boundy. This is a McGraw-Hill publication and is the source of many of the exercises you will be required to attempt. Many students may be using earlier editions of the text. These students will find the page numbers and exercise numbers will differ in earlier editions of the text. The teaching team

may be able to assist if you wish to find the corresponding section/example from an earlier version. A ‘Study Book page references between Text Book editions’ will be available on StudyDesk for some previous editions of the text.

Using the text

The study material won’t necessarily direct you to all the information in the text. You are

expected to read Boundy until you are familiar with its contents.



Study materials for the design component There is no set text for the design part of this course. The Study Book has the basics. It is recommended that you read extra material on conceptual design, ergonomics and design methods. Most technical libraries would have some volumes addressing these areas. Some Selected readings are available in the Useful Links block on ENG1100 Studydesk. I would like to see you use your family and friends or colleagues to constructively criticise

your ideas or to suggest alternative solutions. Don’t make the mistake of thinking you must have a technical person to solve a technical problem.



Study schedule (Please confirm room and times in your class timetables on StudyDesk)

Lectures: Tuesday 1-2pm R113 (Drafting); Wednesday 10-11am R113 (Design)

Tutorials: Wednesday 2-5pm; Thursday 1-4pm; Friday 10am-1pm, all in Z310and Z311

Tutors: Toby Low, Ray Malpress, Peter Penfold and Khalid Saleh

Week Drafting Design Activity Assessment

1 29 Feb –

4 March

Introduction to ENG1100

Presenter: Ray

Malpress

Intro to design

Presenter: Toby Low

Introduction to CAD using AutoCAD

2 7-11

March

Sketching/ orthographic

projection

Presenter: Toby Low

Creativity

Presenter: Toby Low

Sketching and orthographic projection.

Ex 6.7, 6.10

3 14-18

March

Sectioning/

dimensioning

Presenter: Toby

Low

Design matrix

Presenter: Toby

Low

Sectioning *Ex 6.18, 6.29

Dimensioning *Ex 6.33, 6.37

4 21-25

March

Auxiliary views

Presenter: Toby Low

Human factors in design

Presenter: Toby

Low

Auxiliary views

*Ex 7.2, 7.11

NOTE: 25 March

is Good Friday

holiday. Students

can attend other

tuts if seats are

available

Reminder: End of week 4 is the last date to drop S1 courses without academic or financial penalty.

5 & 6 28 March –

8 April

Mid-semester Break

7 11 -15

April Pictorial views

Presenter: Toby

Low

Sustainable

design

Presenter: Toby

Low

NOTE: Lecture

in H102 for Wed

Week 5 Only

Pictorial views

*Ex 8.9, 8.10

8 18-22 April

Presentation skills

Presenter: Ray

Malpress

Industrial design

Presenter: Toby

Low

Design presentations

practice Note: in prescribed tut

sessions and rooms

Reminder: End of week 8 is the last date to drop S2 courses without academic penalty.

9 25 – 29

April

Introduction to

specialist drafting

techniques

Presenter: Les

Bowtell

Life cycle

Presenter: Toby

Low

Design presentations

Ass 1: due 25 April

Ass2 Part A –Presentations (Note: During prescribed tutorials, rooms to be advised)



Week Drafting Design Activity Assessment

10 2 – 6

May

Electrical drafting

Presenter: Les Bowtell

Surveying

Presenter: Peter Penfold

Surveying example

on StudyDesk

11 9-13

May

Structural steel drafting


Structural steel drafting


Structural steel

example on StudyDesk

12 16-20

May

Reinforced

concrete

drafting


Reinforced

concrete

drafting


Reinforced concrete

example on

StudyDesk

13 23-27

May

Assembly

drawing

Presenter: Peter

Penfold

Assembly

drawing

Presenter: Peter

Penfold

*Ex. 9.4

14 30 May –

3 June Detail

drawing


Detail

drawing


*Ex. 9.10

Ass2 Pt B – Design Build and Test

Assessment days

(Note: During

prescribed tutorial times, room to be

advised)

15 6 – 10

June No lecture No lecture

Complete drafting assignment

Assignment 3: Drafting

Due: 10 June

16–17 13-24

June

EXAMINATION PERIOD

* Boundy, AW 2012, Engineering drawing, 8th edn, McGraw Hill.



Assessment

Summative The design component of the course is assessed in one question of Assignment 1 and mainly in

Assignment 2. The drafting component is assessed by two assignments:

● Basic drafting assignment (Assignment 1)

● Specialist drafting assignment (Assignment 3) These assignments and their marking schedules are presented at the end of this introductory material. Note: There is no examination in this course.

Formative Students who study Module 1 of the course will find a number of Activities interspersed throughout the text. These are designed to nurture drafting skills for those who have not drawn previously. A student is free to decide which of these will be attempted.

Assignment submission All assignments are to be submitted electronically via StudyDesk. Further details on submission formats are provided at the beginning of each assignment.




Description Marks out of Due date

Assignment 1: Drafting 300 of the 1000 marks for this course 25 April 2016

Special instructions:

Answer all 5 questions as directed.

All dimensions are in millimeters (mm).

A Computer Aided 2D Drafting program must be used for the drafting questions of

this assessment.

Questions 4 is a free hand sketch. Do not use drawing aids, such as rulers or set-

squares. Completeness and effectiveness of the drawing in portraying the required

detail will be the assessment criteria.

All CAD drafting solutions must be drawn to suit an A3 sized drafting sheet.

Convert your drawing file into a PDF file. ‘Print’ (print as PDF file) using the

‘monochrome’ (black and white) setting. Instructions in the Setting up AutoCAD

drawing environment in the General Information and Resources block on StudyDesk.

Your response to the ‘Design Assessment’ question must be word-processed

but submitted as a .pdf document.

The marking schedule shows the breakdown of marks for each question.

Please note that you will need to work on Assignment 2 at the same time as this assignment.

Submission instructions: ● This assignment is to be submitted electronically, via StudyDesk.

● Your assignment must be submitted as eight separate files (as specified below).

● Make careful note of the format and naming convention used for each file:

STUDENTLASTNAME_STUDENTID_QNUMBER_FILEDESCRIPTION.FILEEXT

(Note: I have used the name SMITH with ID number 006100500 as an example)

● AutoCAD (or equivalent) DWG file of Q1 Drawing:

Using a 2D CAD package, undertake the drawing as per the instructions in the question. Save this drawing file (as a .dwg file format), using the following naming

convention

SMITH_006100500_Q1_CAD.dwg



PDF File of the AutoCAD (or equivalent) Q1 Drawing:

‘Print’ this drawing to a .pdf file, using the setting that you would use for a hard- copy print of the drawing using the following naming convention

SMITH_006100500_Q1_PDF_DRAWING.pdf

● Repeat this procedure for Questions 2 and 3.

PDF File of Q4 Sketch:

Using the template of A4 square-grid sketching sheet (download from StudyDesk), undertake the free-hand sketch of your answer. Scan and Save this as a PDF file, using the following naming convention

SMITH_006100500_Q4_SKETCH.pdf

● For Question 5 submit the report in .pdf format only i.e. save your word processed document as a .pdf file with the naming convention:

SMITH_006100500_Q4_REPORT.pdf

● Once you have uploaded your submission, you will not be able to change and re-submit any of the files. The teaching team is available to resolve any submission issues.

Only the .pdf documents of the DRAWINGS, SKETCH, and REPORT will be marked. The requirement to submit the .dwg files is a cross-check in the case of submission or marking issues. Therefore, ensure that the pdf images are complete and of a quality that accurately reflects the detail of the drawing files.



Question 1 (70 marks)

A pictorial view of a bearing pedestal is given in Figure 1. Draw, in Third Angle Projection, the following orthogonal views: i. a Front View from A

ii. a Sectional Side View from B on a vertical cutting plane through the centre line of the bearing journals

iii. a Top View. Fully dimension and submit on a fully completed ENG1100 Border with title block. Use a

scale of 1:1 and plot on an A3 sheet.

Figure 1: Bearing Pedestal: NOTE – the external flange is not concentric with the bearing surface, but

the centres are in the same vertical plane. The wall thickness at W1 is 6 mm and at W2 is 12 mm.

(Source: Boundy AW, Engineering drawing, 8th edn, McGraw Hill, p. 153.)




Figure 2 gives an isometric view of an angle bracket. Draw, using a scale of 1:1, the

following views in third angle projection.

i. a front view taken from A. Orient the front view so the surface designated as length 115

mm in Figure 2 is horizontal.

ii. two partial auxiliary views showing details of each of the inclined outer faces.

Dimension the auxiliary views only.

(Note: The ƒ symbol indicates surfaces machined flat.)

Figure 2: Angle bracket

(Source: Luzadder & Duff 1989, Fundamentals of engineering drawing,10th edn, Prentice Hall, p. 177.)




Make an Isometric Drawing of the sliding block shown in Figure 3. Choose an appropriate

scale to fit the drawing on an A3 sheet.

Figure 3: Sliding Block (Source: Jensen & Mason 1976, Drafting Fundamentals, McGraw Hill, p. 162)




Freehand sketch one appropriate orthographic view of the one-person golf cart shown in

Figure 4. Do not include the golf bag. Use a suitable scale to depict the view well on an A4

sheet. You’ve seen this cart on display and want to develop a design around the same

concept, so step one is to have a drawing that you can work on for design improvement. For

this assignment question, we require an accurate representation of the cart shown in Figure 4.

Include details and annotations.

Figure 4: One-person golf cart (Malpress, 2015)

All wheels 320 mm

OD

Seat, umbrella attachment and Tiller removable for

transport

Two 250 W

motors

Motorcycle style

throttle speed

control




In the introduction, we stated that design is driven by change and need. Some of these drivers are the need for (or development in) safety, production efficiency, energy efficiency, ease of use and change in demand resulting from public perception, consumer trends, economic

trends and technology improvements. All the objects, appliances, machines or systems in our everyday lives have been driven by some of these factors. Battery technology is improving at an increasing rate. Some suggest the rate of improvement in

battery technology compares to the improvement achieved in the past in computer hardware

technology. This improving battery technology is making battery powered equipment serious

competitors for equipment once powered by internal combustion engines. This is even

extending to cars.

Your task is to assess the trend in battery powered electric lawn mowers. Compare with

internal combustion engine powered mowers. Identify what characteristics are required in the

features of a battery powered lawn mower in comparison to an engine powered one.

Your analysis should discuss the following:

● NEED – What is the need that led to the development of the piece of equipment? Is there a true ‘need’ for battery powered mowers or are they an option supplied in response to market demand? If you identify another reason for the trend or than need, explain how this is responsible for the trend.

● EVOLUTION OF DESIGN – How did features of battery bowered mower evolve from their first introduction to their present forms? What were the drivers for the changes? Consider the historical development and recent trends.

● MATERIAL SPECIFICATION – What materials are used in the manufacture of battery powered mowers? Discuss the changes in material specification and how this has allowed for improved designs? What characteristics of materials in battery powered mowers are different from engine powered mowers? Why?

● SUSTAINABLE DESIGN – Discuss the ‘sustainability’ aspects of recent trends, address at least three of the many facets referred to in the lecture notes that contribute to sustainability. Suggest which design feature may become more prevalent in future years.

● MARKETING – Suggest a marketing focus for the design feature you chose in the previous dot-point? Explain how your chosen design will be attractive to consumers.

● DESIGN IMPROVEMENT – Think outside-the-circle? What alternatives exist for changing current trends?

Document the design analysis in a short report (maximum of 800 words) using the section headings as listed above. Also indicate the number of words used in the report. You need to word process your report but save and submit as a .pdf document. Note: Please consider the different marks associated with each section in the marking criteria as a guide to the significance of each aspect to help write your report. See next pages for Marking Schedule for all questions.



Marking schedule: Assignment 1

Question 1

Description Marks possible

Top view 15

Side view 15

Half Sectional view 15

Dimensions 10

Drafting 15

Total 70

Question 2


Front view 15

Left side auxiliary view 15

Right side auxiliary view 15

Drafting and dimensions 15

Total 60

Question 3


View orientation 15

Drawing completeness and accuracy 30

Drafting 10

Total 55

Question 4


Free-hand sketching ability, including

neatness and effectiveness

20

View orientation 10

Details included and annotations

provided

5

Drafting, overall presentation – is the

drawing appealing

10

Total 45



Question 5

Design consideration Total

Need analysis 10

Evolution of design 12

Analysis of material selection 10

Sustainability considerations 8

Marketing strategy 8

Design improvements 15

Report structure and word count 7

TOTAL 70

Assignment Total = /300

30



Assignment 2 Part A: ONC ONLY

Design Presentation

Group Activity

Due date: Week 9 (Conceptual design presentation – see study schedule on p11)

Value: Part A =150 marks

Total value for Assignment 2 is 300 of the 1000 marks for this course

Conceptual design presentation

Working as a team, select one of the design problems listed and prepare a conceptual solution. Your need to give a presentation of your solution, as a team. Each of the areas addressed by the study material should be demonstrated in your project. To substantiate your conceptual solution, you (as a team) are required to keep a project logbook, in which you will record all meetings, correspondence, concept design, etc. You will be required to submit the logbook on the day of your presentation. The logbook would take the form of a conventional report.

The design activity will be assessed on:

Originality

Feasibility

Application of study material

Presentation

Overall effort

List of conceptual design problems

You must select ONE of these topics.

1. Design an efficient charcoal fired stove for use in under-developed countries.

2. Design an environmentally-friendly, single-seater tricycle for urban use.

3. The efficacy of some medicines is dependent on the temperature at which they

are stored. Design a portable container that will keep medication at

approximately 4oC for at least 12 hours.

4. Kitchen storage containers can become problematic because different lid sizes

are required for different containers. Design a system that will provide for the

use of a unique lid to fit many different sized containers. The solution must

accommodate containers with different sized openings.

5. Design a navigation guidance system for the automated movement of

wheelchairs within a structured environment.

6. Design a low-cost mass commuter transit system that would reduce the use of

motor vehicles in city centres.

7. Patients recuperating from illness or injury and residents of aged care facilities



spend long periods of time being inactive. Design an exercise device to increase

the physical activity of patients/residents, giving consideration to motivation to

exercise, physical ability, system complexity, ease of use, etc.

8. Autonomous vehicles (driverless car/bus/commuter-vehicle) are in

development. Consider uses of autonomous vehicles in city environments,

considering limits on current technology. You only need to consider the way

autonomous vehicles could be used safely and with public approval. You do not

need to consider the technical aspects of how an autonomous vehicle works, but

you will need to research their current capability.

9. Design a system to effectively utilize the heat trapped in a roof (for any use that

would reduce overall consumption of fossil-fuel-based energy).

10. Design a flow measuring device for use in domestic houses to monitor water

consumption at individual outlets, and hence be able to identify water

consumption/wastage.

11. Design a cable-car ride between Picnic Point and Table-top Mountain. Give

consideration to environmental impact, power resources, driving mechanisms,

material selection, construction and aesthetics.

12. Design an activity that would enhance the learning of AutoCAD (as taught in

this course)

Design Presentation Logbook

Ensure that you include the following in your design logbook:-

Need for project

Concept designs – idea generation

Decision matrices – for best solution

Details of best solution – features, materials, ease of use, etc

Ergonomics

Marketing – how you would go about marketing the product

Appendix (IMPORTANT) – show a dissection of work i.e. what proportion of the

project/presentation was undertaken by each of the team members. There must be

consensus on this before the logbook is submitted. Please complete and print the peer

review form on Page 27, get all team members to sign and attach to your logbook. A guide

to considering aspects during the peer assessment is in the Teams' Information, Forums,

Activities and Resources block on StudyDesk. Your presentation will not be assessed if the

logbook and the completed and signed peer evaluation are not submitted PRIOR to your

presentation.

You do not have to produce detailed CAD drawings – as this is only a concept design;

sketches are more appropriate.



Marking schedule for conceptual design presentation

Description Marks

possible

Team Presentation:-

Overall presentation and use of visual aids

15

Coordination of group/presentation 10

Length of presentation 5

Answering questions 10

Individual performance 40

Participation:- (x contribution factor)

Design procedure

25

Quality of Solution 25

Preparation of Presentation 10

Logbook 10

Total 150



ENG1100 – Introduction to Engineering Design

Assignment 2A - Design Presentation

Evaluation of Participation

Peer Review

Team Name:-

Project Title:-

Team Member’s Name

Signature Overall Participation (%)

Please provide the rating as a percentage – a possible maximum of 100% for each team member. For

example if all members contribute equally to the teams efforts, all members will be allocated 100%. In

deciding on the rating, take into consideration the following:-

Participation during the semester

Participation in meeting/discussions

Participation in generating concept designs

Participation in developing final concept

Participation in the presentation

This rating will be used to determine a team member’s individual score. This rating will be taken as

the “contribution factor” in the marking schedule:-

Description Total Possible Marks

Team Presentation 40

Individual performance 40

Participation 70

Here is an example of how the individual marks will be calculated.

Let us assume that, based on the above table; the team’s presentation was assessed as 30/40, and the

team participation was assessed as 50/70. Based on the contribution factor, the individual mark will

be:-

Team Member’s Name

Team Presentation

Individual Performance

Participation (%)

Individual mark

Paul 30 25 100% 30+25+(70 x 1) = 125

Ringo 30 38 30% 30+38+(70 x .3) = 89

George 30 32 50% 30+32+(70 x .5) = 97

John 30 20 80% 30+20+(70 x .8) = 106

REMOVE AND ATTACH TO YOUR LOGBOOK



Assignment 2 Part B: ONC ONLY

Design, build and test

Group Activity

Due date: Week 14 Design, build and test. (Conceptual design presentation – see study schedule, p12)

Value: Part B =150 marks

Total value for Assignment 2 is 300 of the 1000 marks for this course

This task is more complex than it may first appear. Everyone is likely to have seen a ball suspended in a stream of air (https://www.youtube.com/watch?v=zIaK9pnBpgM) . The assessment, to some degree is based on a comparison of performance with other groups, so it is unlikely that you can achieve a good result without applying a reasonable amount of time to this task. Once the Assignment 2 presentations are complete, it is strongly advised that you commence your design process for this task.

Ping Pong Ball Deployment

You will find throughout your engineering degree, that examples, practical demonstrations,

theories and analyses are used to help describe phenomena that engineers need to have an

understanding of. The intention of such descriptions is to help you comprehend what are

sometimes very complex phenomena. It is always useful to keep in mind what the

information you are being given is able to be used for. This assignment works from the

opposite approach. You have a task to achieve, but you are unlikely to have technical

engineering skills (yet) that would allow you to analysis the problem. In your groups,

explore, research and experiment with ideas with the goal of obtaining the best outcome. It

will be a good result from this assignment if it develops your future ability to connect

technical information with how it could be used, especially if it generates a motivation for

you to seek that technical information.

Description

Your task is to construct a tower and device that will deploy a ping pong ball under specific

conditions. The goal is to achieve the maximum distance between the ball’s first and second

bounces on a hard horizontal surface at the same height as the surface supporting the tower.

Specifications:

1. Your team will be supplied with the following materials and your device cannot be built

using any other materials:

Description Quantity

Thickshake drinking straws – approximately 6 mm

dia x 196 mm long 50

Jumbo drinking straws - approximately 7 mm dia x

196 mm long 50

Jute twine (string) 2 mm (this has only a moderate

tensile strength) 5 m

PVC duct tape 48 mm x 30 m roll 1

Standard ping pong ball 1

https://www.youtube.com/watch?v=zIaK9pnBpgM



Standard spherical balloons (max of four used at

one time) 8

13 mm dia x 1 mm wall thickness very low pressure

polythene pipe (low pressure garden/drip irrigation

pipe)

1 m

13 mm polythene inline barbed ¼ turn valve 2

13 mm polythene barbed tee 4

12 mm clear PVC hose 0.5 m

300 x 300 x 12 sheet of plywood 1

Consider the following with reference to Figure 1

2. You may replace materials if you choose to alter a design or need to replace components

from a failure, but any additional materials must be EXACTLY the same type and

replacement materials will be at the team’s expense. Your final structure must NOT use

more than the prescribed material and quantities in the above list.

3. Your structure is to be built using the plywood as a base. The structure is be free standing

and no aids to help retain the base in position are allowed. The test will be carried out on a

horizontal hard surface similar to a desk top. Your structure is to sit on the surface and not

be held in place by adhesive action or clamps.

4. There are no bounds on the way you construct your tower and device to deploy the ping

pong ball, except the following must apply

No part of the structure or device is to come in contact with the horizontal surface on the

side on which the 300 mm first bounce limit marker is situated.

Once the ball is released from the device, it is required to first bounce within 300 mm of

the edge of the base.

The base must be positioned 300 mm from the first bounce limit marker.

The distance achieved, in the normal direction, between the second bounce and a mark

defining the limit distance of 300 mm from the base is the measured criteria for

performance to achieve the competitive score. How close the first bounce is to the limit

distance of 300 mm from the base is not considered.

The device is to use air as an energy source to suspend the ball in a jet or activate or

actuate the device and/or tower in any way to achieve the optimum bounce distance. The

supply of air to the device and/or tower is to be controlled by a ¼ turn valve.

Up to four balloons can be used to store the pressurized air. The balloons need to be

inflated in a safe way. You also need to use one of the ¼ valves to hold the air in the

balloons. All balloons must be attached to piping in a way that allows them to be

changed without removing or apply ducting tape. All balloons used must be connected

to the pipes while being inflated. Inflating the balloons separately, then attaching to your

device is not allowed.

While experimenting with your design, you will probably inflate the balloons by mouth.

Ensure that you do not exceed your capacity to inflate the balloons. Rest if required. If

more than one person inflates the balloons, consider the hygiene of the mouthpiece. On

the day of the tests, we will provide a compressor to inflate the balloons.

On the day of the test, balloons will be supplied and are the only balloons that can be

used for the tests.

5. The goal is to achieve the maximum bounce distance possible. The above constraints on

your construction technique are aimed at producing a fair competition and provide a basis

for your approach to designing your structure/device. There is likely to be scenarios that

these rules do not cover. You are free to ask for clarifications or to defend your



interpretation at the time of the testing. The judges’ decision on the compliance with the

rules is final.

Rule breach Penalty*

Device or tower built from more than the

type and quantity of the prescribed

materials

Disqualified from the competitive score

Any part of the tower or device contacts

the horizontal surface on the side of the

base plate in the direction of the 300 mm

limit marker


Balloons are taped onto the piping or are

inflated while not being attached to the

device or structure


The base plate needs to be held in

position

50% of the margin between the lowest

and highest competitive score

A ¼ turn valve is not used as the means to

retain the air in the balloons



A ¼ turn valve is not used as the means to

control the air flow to the tower and/or

device



*Note: Penalties are cumulative

6. The construction material will only be released to the team after they have presented their

draft design to one of the referees (Ray Malpress, Peter Penfold, Toby Low).

A logbook is required to be submitted on the day of the test. This logbook needs to report

on the teams approach to the task, the design processes and the duties undertaken by each

team member. Photographs, drawings and descriptions of the various stages in the process

should be included. The team members’ peer review consensus on the allocation of

percentage contribution to the teams work is required in the log book. Your team’s marks

will not be released unless a logbook containing the peer review is provided.



Figure 1: Pictorial view of the set up arrangement for testing of ping pong ball deployment structure/device. The surface used on the day of the test will be a conventional desk top, hard laminate.

Scoring:-

Competitive score for distance achieved:

Scoring for the bounce performance will be based on the distance measured from the 300

mm limit mark to the second bounce point, less any penalties applied. The maximum score of

80 will be given to the team that achieves the greatest distance (considering penalties). A

proportional mark will be given between a minimum mark (no lower than 40, unless

disqualified) judged by the course examiner to apply to the team that achieves the lowest

distance bounced. The scores allocated to other teams will be proportional to the distance

achieved. As an example, (judge allocates 45 to the minimum bounce distance)

Distance bounced (cm) score

Team D 135 80

Team B 110 80 − [

(135 − 110)

(135 − 40)] × (80 − 45) = 71

Team E 65 80 − [

(135 − 65)

(135 − 40)] × (80 − 45) = 54

Team A 60 80 − [

(135 − 60)

(135 − 40)] × (80 − 45) = 52

Team C 40 45

Total team assessment will be the sum of marks based on creativity, quality of construction, safety, logbook and performance. The breakdown of marks is shown in the following table.

Individual student’s mark will be determined from the percentage of participation, decided within the team and presented in the Logbook.

PLEASE NOTE: It is not acceptable to approach the examiner AFTER the assessment tests for this assignment and claim that you were excluded or not considered by your team during the team work. You MUST approach the examiner as early as possible with concerns



about team participation/inclusion. It is impossible to retrospectively arrange for an alternative if you have not been given an opportunity to participate by your team. The examiner will make every effort to accommodate any team based issues IF they are presented to him early enough in the semester for something to be organized.

Marking schedule Marks possible

Creativity 30

Quality of construction 25

Safety 5

Logbook 10

Device Performance

Pro-rata:-

highest score = 80 marks

lowest score ≥ 40marks

80

Total 150




Description Marks out of Due date

Assignment 3: Drafting 400 of the 1000 marks for this course 10 June 2016

Special instructions

YOU HAVE A CHOICE OF QUESTIONS FOR THIS ASSIGNMENT. CHOOSE TWO

QUESTIONS OUT OF QUESTIONS 1, 2 AND 3. YOU ARE REQUIRED TO

COMPLETE QUESTIONS 4 AND 5.

IN OTHER WORDS, YOU ARE REQUIRED TO SUBMIT FOUR SOLUTIONS, TWO

OF WHICH NEED TO BE Q4 AND Q5. If you submit solutions to all of questions 1, 2 and

3, only Q1 and Q2 will be marked.

Computer Aided 2D Drafting program must be used for this assessment.

Submit this assignment electronically via StudyDesk. Use the same submission

procedure as outlined for Assignment 1. Free-hand sketches are not required for this

assignment

All CAD drafting solutions must be drawn to suit an A3 sized drafting sheet.

Please ‘print’ (print as a PDF file) using the ‘monochrome’ (black and white) setting.

This assignment must be entirely the work of the student. Any copying or collusion

observed by the examiners will be subject to university policy and could result in a zero

mark. For guidance on what constitutes Academic Misconduct and its various

categories, at USQ refer to Student Academic Misconduct Policy available at:

http://policy.usq.edu.au/policy/files/student%20academic%20misconduct.htm

The marking schedule shows the breakdown of marks awarded for each question.


Field notes and traverse drawing may be an outdated form of keeping and presenting information on the position of features on a site. Modern electronic equipment and

computer based processing will inevitably supersede the traditional technique, but the technique does require the understanding of position and relative association which is the basis of the modern alternatives. In completing the following task, you gain some knowledge of the concepts of the traverse and gain experience of using CAD software in a different way.

The following field notes (3 sheets) of an investigation survey for a service station site have been compiled by a surveyor.

Using CAD software, produce a drawing of the traverse showing all the information on the

site.

http://policy.usq.edu.au/policy/files/student%20academic%20misconduct.htm



Sheet 1 of 3: Site investigation for a proposed service station










Some of the Remote Access Laboratory equipment in the Hydraulics Lab at USQ were designed

and built in-house. An experiment to measure the flow performance of a centrifugal water pump

is described in the schematic of Figure 2. Use this schematic in conjunction with the following

operating requirements,

The height of water in the upper tank, measured by Ultrasonic Level Transducer S-2 determines the

flow rate based on an algorithm of flow through a V-notch.

The Electronically Actuated Ball Valve V-1 is set by the user to restrict the flow on the output of the

pump, thereby increasing the pressure required to be produced by the pump and simulating downstream

loads. Position feedback of this valve is sent to the PLC to ensure values aren’t taken while it is still

being adjusted.

The pump speed is set by the user Interface HMI. The 3-phase, 240VAC pump has its own Variable

Speed drive and is controlled directly from the control PLC.

The variable speed drive has analogue outputs for instantaneous Torque and Speed sent to the PLC.

The level of the lower tank is measured by Ultrasonic Level Transducer S-3 and is used to measure the

head of water supplied to the pump and stop the pump if the height above the pump suction line is not

sufficient.

The experiment can determine the performance curves for the pump over designated pump speeds, flow

and head pressure ranges.

The remote HMI Control uses one PLC using five inputs to produce the data used to generate the

performance curves.

For safety purposes an emergency stop pushbutton isolates ac power when pressed

Figure 2: Schematic of pump performance experiment

Using CAD software, produce two drawings,

1. The 240VAC Power Distribution Schematic diagram

2. 24VDC Power Distribution Schematic diagram

Print to pdf and compile so the two drawings are on separate pages in a single pdf.




Prepare the reinforcement drawings for the R.C. Retaining Wall shown in Figure 3.

Length of wall

Concrete cover Concrete strength

5000mm

60mm

20MPa

Figure 3: RC retaining wall (Malpress 2015)




One corner of a steel framed sugar mill building is shown below in Figure 4. Prepare detailed

fabrication drawing for member B13.

Figure 4: General views of steel construction detail of Sugar Mill Building



Question 5 (135 marks) Draw the following general assembly views of the refrigeration valve, component details of

which are given in Figure 5. You will need to determine how the component fits together to

make the assembly.

(i) a sectional front view on A-A showing the valve closed on the valve seat, item 3.

(ii) a side view looking at the flange.

Draw to 1:1 scale and provide a title block, parts list, and record a revision assuming that the

Ф11 mounting holes were produced as Ф12.

Provide a title block and parts list

Figure 5: Components of valve assembly

(Source: Boundy, AW 2012, Engineering drawing, 8th edn, McGraw-Hill, dimensions altered)



Marking schedule: Assignment 3

Question 1


North datum 10

Traverse table 10

Traverse line 25

Ancillary details 25

Drafting 25

Total 95

Question 2


Electrical detail/accuracy 60

Drafting 35

Total 95

Question 3


Re-inforcement details 60

Drafting 35

Total 95

Question 4


Beam details 40

Dimension 20

Drafting 15

Total 75

Question 5


Assembly and detail accuracy 70

Parts list 15

Drafting 50

Total 135

Total for assignment = /400

Documents

File