12-1 resource management chapter 12 copyright © 2010 pearson education, inc. publishing as prentice...
TRANSCRIPT
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12-1
Resource Management
Chapter 12
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12-2
Types of Constraints
Time
Resource
Mixed
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12-3
Resource LoadingThe amounts of individual resources that a schedule requires during specific time periods.
Resource loading tableResource Name Work Details 5/5 5/12 5/19 5/26
Tom 40 hrs Work 8h 32h
Assign Bids 40 hrs Work 8h 32h
Jeff 40 hrs Work 8h 32h
Calculate Cost 40 hrs Work 8h 32h
Sue 40 hrs Work 8h 32h
Select Bid 40 hrs Work 8h 32h
Carol 8 hrs Work 8h
PR Campaign 8 hrs Work 8hCopyright © 2010 Pearson Education, Inc. Publishing as Prentice Hall
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12-4
Resource Leveling (Smoothing)
A multivariate, combinatorial problem
Objectives• To determine the resource requirements so that
they will be available at the right time• To allow each activity to be scheduled with the
smoothest possible transition across resource usage levels
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12-5
Prioritization Rules for Leveling
Smallest amount of slack
Smallest duration
Lowest ID number (FCFS)
Greatest number of successor tasks
Requiring the most resources
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12-6
General Procedure for Leveling
1. Create a project activity network diagram
2. Develop resource loading table
3. Determine activity late finish dates
4. Identify resource over allocation
5. Level the resource loading table
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12-7
Creating Resource Loading Charts (1/4)
Display the amount of resources required as a function of time.
0 A 4 Res = 6
4 B 5 Res = 2
5 D 9 Res = 7
9 E 11 Res = 3
4 C 7 Res = 2
11 F 12 Res = 6
1. Start with a network diagram
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12-8
Creating Resource Loading Charts 2/4
Activity Resource Duration ES Slack LF
A 6 4 0 0 4
B 2 1 4 0 5
C 2 3 4 4 11
D 7 4 5 0 9
E 3 2 9 0 11
F 6 1 11 0 12
2. Produce a table that shows the duration, early start, late finish, slack, and resource(s) required for each activity.
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12-9
Creating Resource Loading Charts 3/4
A
2
4
6
8
2 1210864 14
C
BD
E
F
Project Days
Res
ourc
es
3. Draw an initial loading chart with each activity scheduled at its ES.
Resource imbalance
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12-10
Creating Resource Loading Charts 4/44. Rearrange activities within their slack
to create a more level profile. Splitting C creates a more level project.
A
2
4
6
8
2 1210864 14
C
BD
E
F
Project Days
Res
ourc
es
C
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12-11
Key Parameters in Multi-Project Environments
Schedule slippage
Resource utilization
In-process inventory
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12-12
Prioritizing Resource Allocations in Multi-Project Environments
• First come first served
• Greatest resource demand
• Greatest resource utilization
• Minimum late finish time
• Mathematical programming
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Copyright © 2010 Pearson Education, Inc. Publishing as Prentice Hall 12-13