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university of Sheffield MEC328 Managing Engineering Projects and Teams

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MEC328 Managing Engineering Projects and Teams
Referral Assignment
1
Referral Assignment
MEC328 Managing Engineering Projects and Teams
Staff: Dong Zhang e: mec328@sheffield.ac.uk
This referral assignment will assess all module learning outcomes, in the form of exam style questions.
Attempt ALL questions in the ‘Questions’ section. Type your answer in a Word document (or similar) and
save your answers as a PDF document in the name [YourRegistrationNumber_MEC328RA.pdf] (for example:
180987654_MEC328RA.pdf). Submit the PDF document by the deadline specified below to the Turnitin
submission portal on the module site.
The module leader can be contacted for feedback if required.
The deadline for submission is 12:00 Friday 14 August 2020.
MEC328
Managing Engineering Projects and Teams
Referral Assignment
2
Questions
Consider the project with the information in the table below.

ActivityNormal Time
(days)
Crash Time
(days)
Crash Cost Per
Day (£)
PredecessorVariance under Normal Time
A11--1/9
B76100A1/16
C63100A1
D53150A1/4
E53300B, C9
F87200C, D4
The total direct normal cost of the project is £20000. For each activity there is also an organisational
overhead of £250.
a). Construct the project network diagram using Activity-on-Node methodology, showing ESTs, LSTs,
and total slacks for each of the activity under normal time. Identify the project duration and the
critical path under normal time.
*You must produce the network diagram by hand (i.e. draw on a piece of paper, take a picture,
then embed the image within the final document). Network diagram produced by any software
(MS Project and Excel included) will not be accepted.
b). Develop a full crashing schedule table for the project. Clearly show the action, step cost, and the
critical path after each crash.
*You can use the table template as shown in the example below:
Crash schedule table example
Duration (days)ActionStep cost (£)Critical Path
100A-1£1000A-B-C-D
c). A performance review 10 days after the project started finds that activities A, B, C, and D have
been completed; activities E and F are about to start. Using the normal time estimates, calculate
the probability that the rest of the project will be completed within 8 days.
*See next page for the z-table.
d). At the same performance review, it is determined that 70% of the overall project work has been
completed with a direct cost of £15000. Calculate the Cost Performance Index using the
percentage rule.
e). It is estimated that all activities in the project will benefit from a learning rate of 0.957405. Using
the normal time in Table 1 as the starting point, calculate the expected normal time duration for
the project at the third (3rd) occurrence.
MEC328
Managing Engineering Projects and Teams
Referral Assignment
3
f). Before producing the project schedule it is necessary to identify the logical dependencies among
project activities. To speed up the project sometimes it is necessary to remove the dependencies
among the activities so that activities could be run in parallel. Discuss how this is possible and use
examples to illustrate your answer.
g). If you were assigned to work on the project with two other team members. Assuming that each
and every of you is equally capable of doing all of the activities in the project, how would you
propose to allocate the human resource to the project?
Z-value table: Areas under the standardised normal curve for z ≥ 0
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