Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 17, Problem 13P
Here is a list of activity times for a project as well as crashing costs for its activities. Determine which activities should be crashed and the total cost of crashing if the goal is to shorten the project by three weeks as cheaply as possible. First construct a network diagram. You can use either an AOA or an AON (see Solved Problem 5).
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Consider the following network for conducting a two-week (10 working days) computer training class:
please refer to the picture I uploaded
Find the crash cost per day.
Which activities should be crashed to meet a project deadline of 10 days with a minimum cost? Assume partial crashing.
Find the new cost.
Is partial crashing an appropriate assumption in this kind of project?
Two critical path activities are candidates for crashing on a CPM network. Activity details are in the table below. To cut two days from the project's duration,
to project cost and activity
should be crashed second, adding
to project cost.
activity
should be crashed first, adding
Activity
Normal Time Normal Cost
Crash Time
Crash Cost
8 days
$6,000
7 days
$6,400
10 days
$4,000
9 days
$5,000
B
A; $400 and then A; $400
nA; $400 and then B; $1000
n B; $1000 and then A; $400
B; $1000 and then B; $1000
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Chapter 17 Solutions
Operations Management
Ch. 17 - A project manager may need two skill setsthose of...Ch. 17 - Explain the term project champion and list some...Ch. 17 - List the steps in risk management.Ch. 17 - Give some examples of ethical issues that may...Ch. 17 - What are the key advantages of using project...Ch. 17 - What is a work breakdown structure, and how is it...Ch. 17 - Identify the term being described for each of the...Ch. 17 - List the main advantages of PERT. List the main...Ch. 17 - Why might a probabilistic estimate of a projects...Ch. 17 - Define each of these terms, and indicate how each...
Ch. 17 - Why might a person wish to be involved with a...Ch. 17 - Prob. 12DRQCh. 17 - What are some aspects of the project managers job...Ch. 17 - What is the main benefit of a project organization...Ch. 17 - What trade-offs are associated with time and cost...Ch. 17 - Who needs to be involved in assessing the cost of...Ch. 17 - Prob. 3TSCh. 17 - Project management techniques have been used...Ch. 17 - Give three examples of unethical conduct involving...Ch. 17 - For each of the following network diagrams,...Ch. 17 - Chris received new word processing software for...Ch. 17 - Prepare a Gantt chart for each of the following in...Ch. 17 - a. Develop a list of activities and their...Ch. 17 - For each of the problems listed, determine the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Three recent college graduates have formed a...Ch. 17 - The new director of special events at a large...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - The project described in the following table is...Ch. 17 - The following precedence diagram reflects three...Ch. 17 - A project manager has compiled a list of major...Ch. 17 - Here is a list of activity times for a project as...Ch. 17 - The project manager of a task force planning the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Chucks Custom Boats (CCB) builds luxury yachts to...Ch. 17 - Prob. 17PCh. 17 - Create a risk matrix in the style of Figure 17.13...Ch. 17 - Create a risk matrix for this project: Explain...Ch. 17 - CASE: The Case of the Mexican crazy quilt 1. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 2. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 3. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 4. The...Ch. 17 - CASE: The Case of the Mexican crazy quilt 5. The...Ch. 17 - B. Smitty Smith is a project manager for a large...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
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- Three activities are candidates for crashing on a project network for a large computer installation (all are, of course, critical) Activity details are in the following table: a) Activity that should be orashed first to reduce the project duration by 1 day is b) Activity that should be crashed next to reduce the project duration by one additional day is c) Total cost of crashing the project by 2 days = S (Enter your response as an integer) Normal Activity Time (days) A B C 7 4 11 Crash Normal Time (days) Cost $8,000 $1,200 $4,200 6 2 9 Total Cost with Crashing Immediate Predecessor(s) $6,500 $3,000 $6.200 A Barrow_forwardA project scope definition document for a Reusable Water Bottle. A scope statement is a document that defines all the elements of the project scope as well as assumptions, project requirements and acceptance criteria. A Reusable Water Bottle project scope statement will act as the primary tool for stakeholders and teammates to reference and use as a guideline to accurately measure project success. State the following: Project Information Justification of the Project: This is a place to define the targets you want to achieve. These can include things such as the launch data, better customer satisfaction, greater conversion rates, etc. Project Scope: List the cope elements Project Deliverables: That is, what you’ll be producing during the project to meet your business objectives. Your final deliverable will be the goal of the whole project. Note that you are not producing anything in this project except for the project management documents. Project Exclusions: Define the project…arrow_forwardIdentify any 10 risks related with the management of IT projects.Define project risk management and outline the essential steps that must be taken?arrow_forward
- You are in charge of a project at the local community center. The center needs to remodel one ofthe rooms in time for the start of a new program. Delays in the project mean that the center mustrent other space at a nearby church at additional cost. Time and cost data for your project arecontained in below table. Your interest is in minimizing the cost of the project to the communitycenter.Using the normal times for each activity, what is the earliest date you can complete the project?Suppose the variable overhead costs are $50 per day for your project. Also, suppose that thecenter must pay $40 per day for a temporary room on day 15 or beyond. Find the minimum-costproject schedule using below format.The AON diagram for the community center project is below. Crash 4 times and find total cost.arrow_forwardYour hospital has applied for certification as a level 1 stroke center. It is critical that the following project is completed in 18 weeks, before the next Joint Commission survey. Project activity times are listed in the table attached as an image. Determine the minimum cost-schedule for this project to be completed in 18 weeks. Assume a linear relationship between crash cost and crash time. For example, crash cost per week for activity A can be calculated as: ($650 - $200)/(4-2) = $225. 2. What is the difference in total project costs between the earliest completion time of the project using normal times and the minimum cost-schedule you found in part 1?arrow_forwardRefer to the Table 1 and do the following: Calculate the Expected time, mean time. Develop the Network diagram using the expected time and use PERT Analysis to know the mean and Sd of the project. Based on these estimates and the resultant expected project duration of 69 days. The executive committee wants to know what is the probability of completing the project before a scheduled time of 68 days? How do you measure project risk exposure? Explain and propose ways to reduce the project risk exposure.arrow_forward
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