Engineering design process 3rd edition haik solutions manual

Engineering Design Process 3rd Edition Haik SOLUTIONS MANUAL
Full download:
https://testbanklive.com/download/engineering-design-process-3rd-edition-haik-
solutions-manual/
Chapter 2
1. Table 2.3 breaks down the number of major jobs or activities involved in painting a two-
story house.
(a) Develop a CPM network.
(b) Determine the critical path of the network.
A-C-D-E-G-H-J-K
(c) Determine the expected project’s duration time period.
26 weeks
TABLE 2.3 Problem 1
Activity Identification Predecessor Duration
Contract signed A — 2
Purchase of material B A 2
Ladder and staging in site C A 2
Preparation of surface D C,B 5

Base coat complete E D 6
Base coat inspected F E 2

Trim coat complete G E 5
Trim coat inspected H G,F 2
Final inspection I H 2
Removal of staging J H 2
Final cleanup K I,J 2
2. Assume that the optimistic, most likely, and pessimistic activity times are as given in
Table 2.4.
(a) Complete the table.
Te =
Use s =
To + 4Tm +Tp
6
Tp -To
6
V =s 2
(b) Determine the probability of finishing the job in 32 weeks.
Z =
D -Te
=
32 -32.33
= -0.07
s 4.66
TABLE 2.4 Problem 2
Pessimistic Most Likely Optimistic Expected
Time
Variance
3 2 1 2 0.11
3 2 1 2 0.11
3 2 1 2 0.11
7 5 3 5 0.44

9 6 4 6.17 0.69
3 2 1 2 0.11
7 5 4 5.17 0.25
3 2 1 2 0.11
3 2 1 2 0.11
3 2 1 2 0.11
3 2 1 2 0.11
3. You should work on this activity during lab hours.
(a) Develop a CPM network and determine the critical path for the events defined in
the Gantt chart in Figure 2.1.

(b) Develop a Gantt chart for the events defined in Table 2.2.
1 2 3 4 5 6 7 8 9 10 11 12 13
Task A
Task B
Task C
Task D
Task E
Task F
Task G
Task H
(c) For the events defined in Table 2.5,
i. Complete the table.
ii. Draw the PERT network.

critical path 1-4-6-14-17-18-16-19-20
iii. Determine the probability of finishing the task on time if the design due date
is later than 95 days.
Z =
D -Te
=
95-90.17
= 0.59
s 8.17
Use the table below to calculate Te and Stdev for the critical path
TABLE 2.5 Problem 3
Predecessor Optimistic Most Likely Pessimistic Expected Stdev Variance
1 3 5 8 5.17 0.83 0.69
1 4 6 9 6.17 0.83 0.69
3 3 4 5 4.00 0.33 0.11
2 2 3 4 3.00 0.33 0.11
5 3 4 5 4.00 0.33 0.11
1 8 12 14 11.67 1.00 1.00
4 14 18 21 17.83 1.17 1.36
7 5 10 14 9.83 1.50 2.25
7 5 10 14 9.83 1.50 2.25
7 5 10 14 9.83 1.50 2.25
7 5 10 14 9.83 1.50 2.25

7 5 10 14 9.83 1.50 2.25
12 4 6 10 6.33 1.00 1.00
11 4 6 10 6.33 1.00 1.00
10 4 6 10 6.33 1.00 1.00
9 4 6 10 6.33 1.00 1.00
8 4 6 10 6.33 1.00 1.00
13 10 12 18 12.67 1.33 1.78
6 16 18 24 18.67 1.33 1.78
14 7 10 15 10.33 1.33 1.78
14 10 15 22 15.33 2.00 4.00
17 5 9 9 8.33 0.67 0.44
18 4 6 8 6.00 0.67 0.44
16 6 8 12 8.33 1.00 1.00
15 3 8 12 7.83 1.50 2.25
19 3 4 5 4.00 0.33 0.11
2.7.2 Individual Activities
4. Define the following terms:
(a) CPM (Critical Path Method): Management tool that assumes that activities durations
are known with certainty
(b) Gantt chart: A chart with series of blocks that account for activities in a project during
an assigned period.
(c) PERT (Program Evaluation Review Technique): Management tool that assumes activity
durations are random
5. Assume that an engineering course term project is broken down into a number of
major jobs or activities, as shown in Table 2.6.
(a) Draw a Gantt chart.

(b) Develop a CPM network.
(c) Determine the critical path of the network.
(d) Determine the project duration time period.

TABLE 2.6 Project
Activity
Description
Activity
Identification
Immediate
Predecessor
Activity Activity Duration (Days)
Literature
collection A — 7
Literature
review B A 4
Outline
preparation C B 1
Analysis D B 10
Report writing E C 5
Typing F E 3
Revision G E 4
Final draft H G 2
Assume that, for example, the optimistic, most likely, and pessimistic activity times are
as shown in Table 2.7. Calculate each activity’s expected time and variance along with
the probability of accomplishing the design project in 2.5 weeks. In addition, calculate
each event’s earliest and latest event times.

TABLE 2.7 Activity Time Estimates (Weeks)
© 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in
part.
Pessimistic Most Likely Optimistic Expected Time Variance
4 2 1 2.16 0.25
3 2 1 2 0.11
4 2 1 2.16 0.25
8 5 3 5.16 0.7
5 4 2 3.83 0.25
7 4 3 4.33 0.44
5 3 2 3.17 0.25
5 3 2 3.17 0.25
9 6 3 6 1
10 4 2 4.17 0.69
17

© 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in
part.
18

Engineering Design Process Haik/Sivaloganathan/Shahin
Engineering Design
Process
Chapter 2:
Essential
Transferable
Skills

2.1 – Objectives
1. Identify essential, prerequisite skills for design
process.
2. Appreciate importance and dynamics of working
in teams.
3. Develop a project schedule using existing tools.
4. Practice and improve research &
communications skills.

© 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible
website, in whole or in part.
3
2.2 – Working in Teams
• A team is a collection of individuals
• Whose work is interdependent and
• Who are collectively responsible for a performance
outcome
• Features of a team include
• Dynamic exchange of information & resources
• Coordinated task activities
• Continuous adjustment to team & task demands
• Shared authority & accountability for performance

4
• Teams can be formed from various model. This
textbook uses the brain model.
• 2.2.1 – Forming a team
• The Hermann model is useful for classifying
individuals into 4 basic thinking styles.
• A team composed of members with all 4
thinking styles will be successful.
• The 4 styles are analytical/logical,
organized/planning, holistic/intuitive and
social/communicative.

5
• 2.2.2 – Dynamics of a Team
• Teams evolve according to 4 stages:
1. Forming
2. Storming
3. Norming
4. Performing
• 4 behaviors are needed for effective team work
1. Communication team behavior
2. Decision making team behavior
3. Collaboration team behavior
4. Self management team behavior

6
• 2.2.2 – Dynamics of a Team
• An effective 4-member team can organize into the
following distinct roles:
1. Captain – skilled in self-management team
behavior
2. Chief Engineer – skilled in decision making team
behavior
3. Human Resources person – skilled in collaboration
team behavior
4. Spokesperson – skilled in communication team
behavior

7
2.3 – Scheduling
• 2.3.1 – Gantt Chart
• The Gannt chart is a form of bar chart and is
created as follows:
1. List all project events/milestones in an ordered list
2. Estimate the time required for each event
3. List the starting & end time for each event
4. Represent this information in a bar chart

2.3 – Scheduling
8

9
2.3 – Scheduling
• 2.3.2 – CPM/PERT
• CPM – Critical Path Method
• PERT- Program Evaluation & Review Technique
• CPM/PERT is used over 65% of time in US
manufacturing companies
• CPM/PERT projects have following characteristics:
1. Clearly defined activities/jobs in a project
2. Activities/jobs proceed uninterrupted once started
3. Activities/tasks are independent w.r.t starting,
stopping, and performed in a prescribed sequence
4. Activities/jobs are ordered in sequential manner

10
2.3 – Scheduling
• 2.3.3 – CPM/PERT Definitions
1. Event (node) – represented by a circle and a
number, this stands for an event such as starting
or stopping of a stage
2. Activity – effort needed to carry out a portion of
project
3. Network paths – Paths needed/used to reach
event or project termination point
4. Critical path – Longest path (w.r.t time) through
the PERT/CPM network
5. Earliest Event Time (EET) – Earliest time at which
an event occurs if preceding events completed at
schedule

11
2.3 – Scheduling
• 2.3.3 – CPM/PERT Definitions
6. Latest Event Time (LET) – Latest time at which an
event can be reached without delaying project
completion
7. Total float – Latest time of an event minus earliest
time of preceding event and duration time of in-
between activity

2.3 – Scheduling

2.3 – Scheduling
• 2.3.4 – CPM/PERT Network Development
• The steps to develop a CPM network are:
1. Break down design into individual activities.
2. Estimate required time for each activity.
3. Determine activity sequence.
4. Construct CPM network using defined symbols.
5. Determine critical path of the network.

2.3 – Scheduling
• The steps to develop a PERT network are:
1. Break down design into individual activities.
2. Determine activity sequence.
3. Construct PERT network using defined symbols.
4. Obtain expected time to perform each activity
using the formula:
Te (x 4y  z) / 6
5. Determine the critical network path.

2
2.3 – Scheduling
6. Compute variance associated with expected time
of each activity with the formula
2
s2 z x
6


7. Obtain probability of accomplishing design project
on the stated date using the formula
w
T TL
Scr

2.4 – Research Skills
• In the design process, research is pursued at all
stages, but especially during customer
requirement collection and market analysis
stages.
• The Big6 method identifies 6 categories of research
skills:
1. Task definition
2. Information seeking strategies
3. Location and access
4. Use of information
5. Synthesis
6. Evaluation

2.5 – Technical Writing & Presentation
• The end of the design process often requires a
technical report, which is disseminated to a
diverse audience.
• Readers often assume that the quality of the
report reflects the quality of the design project.
• Therefore, effective report writing is essential to
market the design to stakeholders.

19
• The outline of a typical report format is:
1. Cover Page – Title, Address, Author name(s)
2. Summary – Intended for broad audience, including
executives. Should have a conclusion
3. Table of Contents
4. List of figures, list of tables
5. Introduction – provides background and possibly
market analysis
6. Design Process – provides details of procedures
followed in design process

• The outline of a typical report format is:
7. Discussion – contains comprehensive examination
of results. Subsections may include technical
analysis, equipment used, details of mock-up
model, procedures, details of final results etc
8. Conclusion
9. References
10. Appendices – details deemed beyond the main
scope of the report. Can contain as many
subsections as necessary

• 2.5.1 – Steps in Writing a Report
1. P : Plan the Writing
2. O : Outline the Report
3. W : Write
4. E : Edit
5. R : Rewrite

• 2.5.1 – Steps in Writing a Report
• Some attributes of good report writing are:
1. Objective, concise and methodical writing.
2. Deliver written material on time.
3. Strive for clarity in writing.
4. Effectively answer readers’ questions as they
arise.
5. Give a good first impression and read coherently.
6. Contain effective introduction and summary.
7. Avoid vague and superfluous phrases.

• 2.5.2 – Illustration Guidelines
• Some guidelines for preparing effective
visuals/illustrations are
1. Reference all illustrations in the text.
2. Reference data sources.
3. Specify all scales, axes, units etc., and provide a
caption/title for every illustration.
4. Carefully plan placement of visuals.
5. Avoid putting too much data in one visual.
6. Spell out words rather than use abbreviations.
7. Use a list of figures if more than 5 illustrations are
present in the report.

• 2.5.3 – Mechanics of Writing
• Paragraph Structure – use a topic sentence; use a
single theme per paragraph
• Sentence Length – keep sentences as short as
possible, and convey one idea per sentence
• Pronouns – Use nouns instead of ‘it’, ‘this’, ‘that’.
Avoid using personal pronouns like ‘I’, ‘you’, ‘they’.
• Spelling and Punctuation – these errors are
inexcusable in the final draft of the report
• Tense – Use past tense to describe work done in the
past. Present tense should refer to ideas and items
in the report. Future tense is for making predictions
from data, or for results applicable in the future.

2.6 – Presentation Style
• 2.6.1 – Objective
• Every presentation must have a clearly focused
objective.
• If everything goes perfectly, what do I intend to
achieve?
• Determine your audience and their education
level.
• Practice presentations in advance through role
playing to evaluate if your objective is being
achieved in your presentation.

• 2.6.2 – Oral Presentation Obstacles
• Oral presentation requires lots of creativity.
• You have to be confident in your idea/design to
effectively sell it to others.
• People tend to resist change, and may raise
objections like:
We tried it before; its never been done before; the idea is
unrealistic etc.
• Only 70% of spoken word is initially understood –
repetition and redundancy help audience
understanding.
• People like simple explanations, and tend to see
things from their own perspective.

• 2.6.3 – Oral Presentation Do’s and Don’ts
• Know audience thoroughly, and make eye contact
with them majority of the time.
• Stay within the allotted time.
• Avoid technical jargon. Use jokes/anecdotes etc.,
but only if you can effectively deliver them.
• Practice repeatedly in advance.
• Understand your message clearly.
• The presentation should be presented in a logical
order of messages.
• Present the material in a clever way, but not in a
cheap, sensational way.

• 2.6.4 – Oral Presentation Techniques
• Visual aids convey information more effectively and
efficiently than text in most cases.
• Slides should be kept under 1 minute.
• Slides should contain a single idea generally.
• Never read directly from the slide.
• Use well labeled graphs to show variations, trends
etc.
• Include title, outline and summary slides in your
presentation.
• Color should enhance communication, not distract
from it.

• 2.6.5 – Question & Answer Session
• Allow the questioner to complete the question
before answering.
• Avoid being argumentative.
• Avoid making questioner feel the question is stupid.
• Adjourn meeting if questions slack off.
• Thank the audience one more time after the Q&A
session.

Engineering Design Process 3rd Edition Haik SOLUTIONS MANUAL
Full download:
https://testbanklive.com/download/engineering-design-process-3rd-edition-haik-solutions-
manual/
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