Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
12th Edition
ISBN: 9780134855424
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 11P
Consider a project to produce custom door moldings for GMC Acadia crossover vehicles, described in Table 7.4.
- If you start the project immediately, when will it be finished?
- You are interested iii completing your project as soon as possible. You have only one option. Suppose you could assign Employee A, currently assigned to activity G, to help Employee B, currently assigned to activity F. Each week that Employee A helps Employee B will result in activity G increasing its time by 1 week and activity F reducing its time by 1 week. How many weeks should Employee A work on activity F?
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b) Assuming that each task is started as soon as possible, construct the corresponding resource loading diagram for the project. c) How would you rearrange the timing of project activities to reduce the fluctuation in resource demand? Assume that the overall project duration cannot be extended. Remember that the specified precedence relationships must be maintained. d) If there are only 20 workers available for the project, how would you assign workers to tasks to ensure that the project can be completed without violating the resource limit? In this case, the project duration may be extended if necessary (but without violating precedence relationships). e) Given the results from (c) and (d) above, what recommendations would you make to senior management regarding the staffing of this project, and why?
Consider a project to produce custom door moldingsfor GMC Acadia cross-over vehicles, described inTable 7.4.
a. If you start the project immediately, when will it be finished?b. You are interested in completing your project as soon aspossible. You have only one option. Suppose you couldassign Employee A, currently assigned to activity G, tohelp Employee B, currently assigned to activity F. Eachweek that Employee A helps Employee B will result inactivity G increasing its time by one week and activity Freducing its time by one week. How many weeks shouldEmployee A work on activity F?
The company decided that the project in the previous problem had to be expedite in order to optimize (minimize) the project cost. Expediting can be used to trade direct cost for indirect cost, since expediting reduces the indirect cost of the project by a fixed amount per day, while expediting an activity increases its total direct cost. The Accounting Department found that indirect costs amount to $100 per day, while activity direct costs as well as their normal and expedited times are given in the table below.
Activity
Duration (Days)
Expedited Time (Days)
Normal Direct Cost ($)
Expedited Direct Cost ($)
A
32
26
200
500
B
21
20
300
375
C
30
30
200
200
D
45
40
200
800
E
26
20
700
1,360
F
28
24
1,000
1,160
G
20
18
400
550
What is the optimal time to complete the project?
What is the optimal project cost?
Chapter 7 Solutions
Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
Ch. 7 - One of your colleagues comments that software is...Ch. 7 - Explain how to determine the slack for each...Ch. 7 - Define risk as it applies to projects. What are...Ch. 7 - Consider the following data for a project to...Ch. 7 - The following information is known about a project...Ch. 7 - A project for improving a billing process has the...Ch. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Consider the following information for a project...Ch. 7 - Consider the following data for a project to...
Ch. 7 - Paul Silver, owner of Sculptures International,...Ch. 7 - Prob. 9PCh. 7 - The following information concerns a project to...Ch. 7 - Consider a project to produce custom door moldings...Ch. 7 - Table 7.5 contains information about au...Ch. 7 - The Advanced Tech Company has a project to design...Ch. 7 - Prob. 14PCh. 7 - Table 7.8 contains data for the installation of...Ch. 7 - The diagram in Figure 7.12 was developed for the...Ch. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - You are the project manager of the software...Ch. 7 - Jordanne King, the project manager for Webjets...Ch. 7 - Recently, you were assigned to manage a project to...Ch. 7 - In Solved Problem 2, estimate the probability that...Ch. 7 - The director of continuing education at Bluebird...Ch. 7 - Gabrielle Kramer, owner of Pet Paradise, is...Ch. 7 - The project manager of Good Public Relations...Ch. 7 - Consider the office renovation project data in...Ch. 7 - Activity B and activity K are critical activities....Ch. 7 - Prob. 2AMECh. 7 - Prob. 3AMECh. 7 - Prob. 4AMECh. 7 - Prob. 5AMECh. 7 - Assess the four categories of a risk-management...Ch. 7 - Prob. 2VCCh. 7 - Assume you are Denise Tower and have...Ch. 7 - Prob. 1CCh. 7 - Prob. 2CCh. 7 - Prob. 3CCh. 7 - Prob. 4C
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