Chapter Ten – Project Scheduling: Lagging, Crashing, and Activity Networks
shakithachaseDiscussion Questions 2, 3, 5
Chapter 10: Additional Study Notes
(Excerpts from the original Pinto PowerPoint Presentations)
Gantt Charts
- Establish a time-phased network
- Can be used as a tracking tool
Benefits of Gantt charts
- Easy to create and comprehend
- Identify the schedule baseline network
- Allow for updating and control
- Identify resource needs
Crashing
The process of accelerating a project
Principal methods for crashing
- Improving existing resources’ productivity
- Changing work methods
- Increasing the quantity of resources
Managerial Considerations
- Determine activity fixed and variable costs
- The crash point is the fully expedited activity
- Optimize time-cost tradeoffs
- Shorten activities on the critical path
- Cease crashing when – the target completion time is reached – the crashing cost exceeds the penalty cost
Controversies in the Use of Networks
- Networks can be too complex
- Poor network construction creates problems v Networks may be used inappropriately
- When employing subcontractors
- – The master network must be available to them
- – All sub-networks must use common methods
- Positive bias exists in PERT networksChapter 10: Additional Study Notes
(Excerpts from the original Pinto PowerPoint Presentations)
Gantt Charts
- Establish a time-phased network
- Can be used as a tracking tool
Benefits of Gantt charts
- Easy to create and comprehend
- Identify the schedule baseline network
- Allow for updating and control
- Identify resource needs
Crashing
The process of accelerating a project
Principal methods for crashing
- Improving existing resources’ productivity
- Changing work methods
- Increasing the quantity of resources
Managerial Considerations
- Determine activity fixed and variable costs
- The crash point is the fully expedited activity
- Optimize time-cost tradeoffs
- Shorten activities on the critical path
- Cease crashing when – the target completion time is reached – the crashing cost exceeds the penalty cost
Discussion Questions 2, 3, 5 (from the textbook)
Questions:
Question- The advantage of Gantt chart lies in their linkage through the project schedule baseline. Explain this concept.
Question - What are the advantages in the use of Ganett charts over PERT diagrams? In what ways might PERT diagrams be advantageous?
Question -Under what circumstances might you wish to crash a project?
Controversies in the Use of Networks
- Networks can be too complex
- Poor network construction creates problems v Networks may be used inappropriately
- When employing subcontractors
- – The master network must be available to them
- – All sub-networks must use common methods
- Positive bias exists in PERT networks
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