EBK OPERATIONS MANAGEMENT
14th Edition
ISBN: 9781260718447
Author: Stevenson
Publisher: MCG COURSE
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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
EBK OPERATIONS MANAGEMENT
Ch. 17.3 - Will the AI technology render project managers...Ch. 17.3 - Prob. 1.2RQCh. 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 - Prob. 9PCh. 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 - B. Smitty Smith is a project manager for a large...
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- What is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by 4 days? Crash Normal Activity Time (days) Time (days) Normal Cost A 5 4 B 9 7 C 6 5 D 7 5 E 7 4 Total Cost with Crashing Immediate Predecessor(s) $800 $300 $600 $750 $1,200 By how many days should each activity be crashed to reduce the project completion time by 4 days? Fill in the table below. (Enter your responses as whole numbers.) Each Activity Should be Reduced BY (days) Activity A B C D E $1,100 $400 $650 $1,500 $1,650 | | | < 0arrow_forwardWhat is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by 4 days? Normal Cost $800 $200 $600 $750 $1,200 Normal Crash Activity Time (days) Time (days) 4 3 8 6 The total cost of crashing the project by 4 days is $ ABCDE 487 355 (Enter your response as a whole number.) Total Cost with Crashing Immediate Predecessor(s) $1,500 $1,650 By how many days should each activity be crashed to reduce the project completion time by 4 days? Fill in the table below. (Enter your responses as whole numbers.) Each Activity Should be Reduced BY (days) Activity A B C D E $1,100 $600 $650 A Carrow_forwardThe Advanced Tech Company has a project to design an integrated information data base for a major bank. Data for the project are given in the following table. Indirect project costs amount to $250 per day. The company will incur a $200 per day penalty for each day the project lasts beyond day 12. Activity Normal Time (days) Normal Cost ($) Crash Time (days) Crash Cost ($) Immediate Predecessor(s) A 5 800 4 1,000 − B 5 1,100 2 2,900 − C 2 600 1 900 A, B D 3 1,200 2 2,000 B E 3 1,500 2 1,700 C, D F 2 1,300 1 1,400 E G 3 900 3 900 E H 5 500 2 800 G a. What is the project's duration if only normal times are used? The project duration is nothing day(s). (Enter your response as an integer.)…arrow_forward
- project managementarrow_forwardDraw a network representation of the project (nodes = activities, arrows = precedence constraints). Provide early start/early finish as well as late start/late finish times for all activities. What is the duration of the project, and which tasks are on the critical path? Task Description Duration Predecessors A Project Planning 16 days - B Evaluation Existing Apps 20 days - C Define Value Proposition 12 days B D Define User Interface 18 days B E Define Technology Requirements 22 days C and D F Document Requirements 14 days E G Develop Architecture 35 days A and F H Creation Code Design 18 days G I Roadmap Feature Development 12 days G J User Interface Development 74 days H and I K Code Development 92 days H and I L Release Testing 32 days J and K M Get User Feedback 22 days L N Bug Fixing 28 days L O Marketing Plan 54 days E P Release Product 5 days M, N and Oarrow_forwardWhat is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by 4 days? Normal Crash Activity Time (days) Time (days) A B C D E 580 4 (O ∞ 6 8 4 6 3 4 5 Normal Cost Activity A B C D E $800 $200 $600 $750 $1,200 Total Cost with Crashing Immediate Predecessor(s) $1,100 $500 $650 The total cost of crashing the project by 4 days is $ $1,500 $1,650 By how many days should each activity be crashed to reduce the project completion time by 4 days? Fill in the tab below. (Enter your responses as whole numbers.) Each Activity Should be Reduced BY (days) 1 0 1 2 3 | | | < 0 (Enter your response as a whole number.)arrow_forward
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