CPA Problem for Dummies: Understanding Activity Networks

  • Context: Undergrad 
  • Thread starter Thread starter Nubcake
  • Start date Start date
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SUMMARY

The discussion centers on the necessity of using two dummy variables in critical path analysis for the given precedence table. The user initially created an activity network with only one dummy variable, which did not accurately represent the dependencies of activities E and F. It is established that a starting dummy variable is required to connect activities A and B, while an ending dummy variable is necessary to connect activities D, E, and F, ensuring the correct representation of dependencies in the activity network.

PREREQUISITES
  • Understanding of critical path analysis
  • Familiarity with activity networks
  • Knowledge of dummy variables in project management
  • Basic skills in drawing precedence tables
NEXT STEPS
  • Study the concept of dummy variables in project scheduling
  • Learn how to construct activity networks using Microsoft Project
  • Explore advanced critical path analysis techniques
  • Review case studies on project management and dependency mapping
USEFUL FOR

Project managers, students of project management, and anyone involved in scheduling and resource allocation will benefit from this discussion on critical path analysis and the use of dummy variables.

Nubcake
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This is not really a h/w question but one thing I so not understand with this precedence table in critical path analysis , why would it needs two dummies?Activity. | Depends On
A | -
B | -
C | A
D | B
E | B,C
F | B,C

I drew this activity network and I only used 1 dummy to represent the dependence of E , F didn't need another dummy variable.

Can anyone explain why? Hence draw an activity network to show .

Thanks
 
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You need a dummy starting variable that connects to A and B. You also need a dummy ending variable that is connected from D, E and F.
 

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