Project Management: The Managerial Process (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9781259666094
Author: Erik W. Larson, Clifford F. Gray
Publisher: McGraw-Hill Education
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Chapter 8, Problem 3E
Compute the early, late, and slack times for the activities in the network that follows, assuming a time-constrained network. Which activities are critical? What is the time-constrained project duration?
Note: Recall, in the schedule resource load chart the time-constrained scheduling interval (ES through LF) has been shaded. Any resource scheduled beyond the shaded area will delay the project.
Assume you have only three resources and you are using a computer that uses software that schedules projects by the parallel method and following heuristics. Schedule only one period at a time!
Minimum slack
Smallest duration
Lowest identification number
Keep a log of each activity change and update you make each period—e.g., period 0-1, 1-2. 2-3, etc. (Use a format similar to the one on page 259.) The log should include any changes or updates in ES and slack times each period, activities scheduled, and activities delayed. (Hint: Remember to maintain the technical dependencies of the network.) Use the resource load chart to assist you in scheduling (see figures 8.4 and 8.5).
List the order in which you scheduled the activities of the project. Which activities of your schedule are now critical?
Recompute your slack for each activity given your new schedule. What is the slack for activity 1? 4? 5?
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You have prepared the following schedule for a project in which the key resource is a backhoe. This schedule is contingent on having 3 backhoes. You receive a call from your partner, Brooker, who desperately needs 1 of your backhoes. You tell Brooker you would be willing to let him have the backhoe if you are still able to complete your project in 11 months. Develop a resource schedule to see if it is possible to complete the project in 11 months with only 2 backhoes. Activities 5 and 6 require 2 backhoes, while activities 1, 2, 3, and 4 require 1 backhoe. No splitting of activities is possible.
3. Compute the early, late, and slack times for the activities in the network that follows,
assuming a time-constrained network. Which activities are critical? What is the
time-constrained project duration?
Note: Recall, in the schedule resource load chart the time-constrained scheduling
interval (ES through LF) has been shaded. Any resource scheduled beyond the
shaded area will delay the project.
Assume you have only three resources and you are using a computer that uses
software that schedules projects by the parallel method and following heuristics.
Schedule only one period at a time!
Minimum slack
Smallest duration
Lowest identification number
282 Chapter 8 Scheduling Resources and Costs
Keep a log of each activity change and update you make each period-e.g., period
0-1, 1-2, 2-3, etc. (Use a format similar to the one on page 259.) The log should
include any changes or updates in ES and slack times each period, activities
scheduled, and activities delayed. (Hint: Remember to…
What are the differences between the Forward Pass, the Backward Pass, Total float, and Free float in scheduling and resource leveling in project management?
Chapter 8 Solutions
Project Management: The Managerial Process (Mcgraw-hill Series Operations and Decision Sciences)
Ch. 8.1A - Explain how time is wasted in management of...Ch. 8 - How does resource scheduling reduce flexibility in...Ch. 8 - Prob. 5RQCh. 8 - Given the network plan that follows, compute the...Ch. 8 - Compute the early, late, and slack times for the...Ch. 8 - You have prepared the following schedule for a...Ch. 8 - You are one of three carpenters assigned to...Ch. 8 - Jack and Jill Smith have just retired and want to...
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