OPERATIONS AND SUPPLY CHAIN MANAGEMENT
9th Edition
ISBN: 9781119448037
Author: Russell
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 9, Problem 9P
In one of the little-known battles of the Civil War, General Tecumseh Beauregard lost the Third Battle of Bull Run because his preparations were not complete when the enemy attacked. If the critical path method had been available, the general could have planned better. Suppose that the project network below with activity times in days had been available. Determine the earliest start and finish times, latest start and finish times, and activity slack for the network. Indicate the critical path and the time between the general’s receipt of battle orders and the onset of battle.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
. Given the following network with activity times in weeks, determine the earliest start and finish times, latest start and finish times, and slack for each activity. Indicate the critical path and the project duration.
photo attached-
Calculate and insert ALL missing Earliest Start or Earliest Finish at each Activity.
Calculate and insert ALL missing Latest Start and Latest Finish at each Activity.
Calculate missing Slack at Every Activity on the network Diagram.
List of all possible paths & Total Slacks from Start to finish for each path.
*Which activities are on the critical path? What is the total slack along the critical path.
The project detailed in the table below is contracted for delivery in 11 weeks, with a penalty clause requiring the contractor to pay a penalty of $2000 for each week late. The project must therefore be expedited. The possible reductions and associated costs are shown in the table. Times in the table are given in weeks. Only activity 4 can be expedited two weeks. The other activities can be expedited one week. (a) Determine the critical path(s), the expected duration of the project, and the slack time for each activity (indicate value on network)? What is the total project cost with penalty included? (b) How could the project time be reduced to 11 weeks and what is the total project cost?
Activity
Immediate predecessor
Normal time
Expedited time
Normal cost ($)
Expedited cost ($)
1
-
4
3
5,000
6,900
2
-
2
2
3,000
3,000
3
1
5
4
7,000
9,200
4
2
6
4
9,000
11,000
5
2
5
4
6,000
7,800…
Draw the network diagram based on the information given below. Calculate the ES, EF, LS, LF and slack for each activity and identify the critical path. Can the project be completed in 40 weeks? Assume that activity A actually finished at the 9th week, activity B actually finished at the 10th Recalculate the expected project completion time. Which activities would you focus on in order to get the project back on schedule?
Activity
Preceding
Activity
Time
(Weeks)
ES
EF
LS
LF
Slack
A
10
B
8
C
A, B
6
D
A
8
E
B
9
F
C, D
7
G
D, E
12
H
F, G
10
Chapter 9 Solutions
OPERATIONS AND SUPPLY CHAIN MANAGEMENT
Ch. 9 - Why is CPM/PERT a popular and widely applied...Ch. 9 - What is the purpose of a CPM/PERT network?Ch. 9 - Why are dummy activities used in a CPM/PERT...Ch. 9 - What is the critical path, and what is its...Ch. 9 - What is slack, and how is it computed?Ch. 9 - How are the mean activity times and activity...Ch. 9 - How is total project variance determined in...Ch. 9 - What is the purpose of project crashing analysis?Ch. 9 - Describe the process of manually crashing a...Ch. 9 - Which method for determining activity time...
Ch. 9 - Explain how a Gantt chart differs from a CPM/PERT...Ch. 9 - Discuss the relationship of direct and indirect...Ch. 9 - Describe the limitations and disadvantages of...Ch. 9 - Describe the difference between activity-on-node...Ch. 9 - Identify and briefly describe the major elements...Ch. 9 - Select an everyday project you are familiar with...Ch. 9 - Prepare a WBS for a spaghetti with meatballs...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Use the project activities that follow to...Ch. 9 - Construct a network from the information in the...Ch. 9 - For the network in Problem 9.4, determine the...Ch. 9 - Given the following network with activity times in...Ch. 9 - Given the following network with activity times in...Ch. 9 - A marketing firm is planning to conduct a survey...Ch. 9 - In one of the little-known battles of the Civil...Ch. 9 - A group of developers is building a new shopping...Ch. 9 - The management of a factory is going to erect a...Ch. 9 - Given the following network and probabilistic...Ch. 9 - The Farmers American Bank of Leesburg is planning...
Additional Business Textbook Solutions
Find more solutions based on key concepts
What are the three historical milestones in operations management? How have they influenced management?
Operations Management, Binder Ready Version: An Integrated Approach
What is precedent, and how does it affect common law?
Business in Action
Create an Excel spreadsheet on your own that can make combination forecasts for Problem 18. Create a combinatio...
Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
Consider the sales data for Computer Success given in Problem 7. Use a 3-month weighted moving average to forec...
Operations Management: Processes and Supply Chains (11th Edition)
••• 4.13 As you can see in the following table, demand for heart transplant surgery at Washington General Hospi...
Operations Management: Sustainability and Supply Chain Management (12th Edition)
The best fits using exponential smoothing, trend analysis, and linear regression for the given data. Introducti...
Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
Knowledge Booster
Learn more about
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
- The managers at AllBirds have operations in multiple countries, which operate on different financial management systems. This has been increasingly challenging for the company, so the Justin is looking to consolidate and integrate the financial management across all locations into a single software system that can operate across the national boundaries. This is a new, complicated and lengthy project, so Justin has identified a set of activity categories that will need to be carefully managed, as noted in the table. Draw the project network, and compute the expected time and variance for each activity. Develop an activity schedule for this project, compute activity slack time and identify critical path.arrow_forwardA project consists of the activities in the following list. Times are given in weeks. Activity Preceding Time A -- 8 B -- 4 C A, B 7 D A, B 3 E C, D 5 F C, D 6 G E, F 4 Draw the project network diagram. Calculate each activity's ES, EF, LS, LF, and Slack using the project activity nodes on the project network diagram. What is the project completion time? Identify the critical patharrow_forward*(b.) (in Microsoft Project) create the network diagram and task schedule table and then provide (in Microsoft Word) the critical path for the project and give in a table the ES, EF, LS, and LF, free float and total slack for each activity (taking information from Microsoft Project).arrow_forward
- You are provided with the following information for a project, with activity durations given in weeks: Activity Immediate Optimistic Most Likely Pessimistic Predecessor Time (a) Time (m) Time (b) A ____ 2 3 4 B ____ 2 4 6 C A 1 2 3 D B 3 6 9 E C, D 7 8 9 F D 4 7 10 G E 3 4 5 H E, F…arrow_forwardDraw the network diagram. Calculate the expected duration and variance of each activity. Calculate the expected duration and variance of the critical path. Calculate the probability that the project will be completed in less than 28 weeks.arrow_forwardI need help for number 12, please. Based on question number 11, which I already know the answer, find number 12. First image is the answer for number 11. 11. Building a backyard swimming pool consists of nine major activities. The activities and their immediate predecessors are shown. Develop the project network. For number 12, see the second image 12. Assume that the activity time estimates (in days) for the swimming pool construction project in Problem 11 are as follows: a. What are the critical activities? b. What is the expected time to complete the project? c. Based only on the critical path, what is the estimated probability that the project can be completed in 25 or fewer days?arrow_forward
- You are creating a customer database for the Hillsboro Hops minor league baseball team. Draw a project network given the information in the table that follows. Complete the forward and backward pass, compute activity slack, and identify the critical path. How long will this project take? How sensitive is the network schedule? Calcu-late the free slack and total slack for all noncritical activities.ID Description Predecessor Time (days)A Systems design None 2 B Subsystem A design A 1C Subsystem B design A 1D Subsystem C design A 1E Program A B 2F Program B C 2G Program C D 2H Subsystem A test E 1I Subsystem B test F 1J Subsystem C test G 1K Integration H, I, J 3L Integration test K 1arrow_forwardGiven the following project: Activity Predecessor Normal Time (day) Normal Cost ($) Crash Time (day) Crash Cost ($) A - 4 800 2 1300 B - 10 1200 7 2400 C A 6 1100 4 1700 D A,B 7 1000 4 1600 E C 10 2000 8 3000 F C,D 5 900 - - (a) Draw the network and find the critical path duration of the project, total cost of project using normal times. (b) Calculate the maximum time reduction and crash cost-per-day (all activities may be partially crashed) for each activity. Then fill the table below. (Note: Activity “F” cannot be crashed) Activity Maximum Time Reduction (day) Cost to Crash per Period ($/day) A B C D E F (c) Find the optimal way of getting a 20-day delivery time. What is the project cost? (d) Find the optimal way of getting a 18-day delivery time. What is the project cost?arrow_forwardA group of developers is building a new shopping center.A consultant for the developers has constructed theCPM/PERT network below and assigned activity times inweeks. Determine the earliest start and finish times, lateststart and finish times, activity slack, critical path, and duration for the project.arrow_forward
- A project has the following activities, precedence relationships, and activity duration. Draw the AOA project network. How long would it take to complete this project? What is the length of the critical path?arrow_forwardConstruct a Gantt chart and project network for the following set of activities, compute the length of each path in the network, and indicate the critical path:arrow_forward. A Project network is shown below. Use forward and backward pass to determine thecritical path and then fill the below table.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY