EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Question
Chapter 18, Problem 6PA
Summary Introduction
Interpretation: The network diagram is to be drawn and the critical path is go be located by computing the early start, late start, early finish, late finish and activity slack.
Concept Introduction:
Project
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Norton Industries is installing a new computer system. The activities, the activity times, and the project network are as follows.
Activity
Time
A
B
6.
2
D
5
4.
F
3
3
A.
E
F
Start
H
Finish
D
B
G
The critical path calculation shows B-D-E-F-H is the critical path, and the expected project completion time is 21 weeks. After viewing this information, management requested overtime be used to complete the project in 16
weeks. Thus, crashing of the project is necessary. The following information is relevant.
Time (weeks)
Cost ($)
Activity
Normal
Crash
Normal
Crash
A
3
1
900
1,700
B
6.
3
2,000
4,100
2
500
1,000
D
3
1,800
2,400
E
4
3
1,500
1,850
F
3
1
3,000
3,900
8,000
9,800
3
1,000
2,000
(a) Formulate
linear programming model that can be used to make the crashing decisions for this project. (The objective function should be the additional cost of crashing. Let x; = the finish time for activity i and y; =
the amount of time activity i is crashed where i = A, B, C, D, E, F, G, and H.)
Min
s.t.…
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 1
Create a Network Diagram and Critical Path using the Data. Determine the minimum project duration. The duration of each activity is in days.
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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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- A 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_forwardFor the following schedule, draw the node network, perform the CPM calculations, mark the critical path, and complete the table. I have the node and table filled out I have several questions related to the nodes. What is the project duration? List the activities on the critical path. What is the free float on activity N? What is the total float on activity F? What are the early start and finish dates on activity H? What are the late dates on activity D? What activities have the largest amount of total float? What activities have the most free float and how much?arrow_forwardThe High-Flight DC Graphic Novels special print production project. "Project: Retro" consisting of 13 activities, is described as follows: a) prepare a network diagram for this project (use the AON format and calculate the ES, EF, LS and LF for each activity. b) determine the critical path and project duration. c) Calculate the free slack for each activity.arrow_forward
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