PERT CPM usando el software POM QM

First PM Exercises Using Pong Software

Introduction to CPM and Warehouse Expansion Case

• The session focuses on solving first project management exercises using the Pong software, specifically addressing a warehouse expansion case from Anderson's book on contributory methods for businesses.

• The discussion includes three time estimates: optimistic, probable, and pessimistic, along with considerations for normal and compressed times associated with costs.

Setting Up the Software

• Users are guided through the Pong software interface, selecting the CPM option under the parts menu to create a new file.

• A total of 11 activities (labeled A to K) are entered into the system, with an emphasis on maintaining consistent formatting in uppercase letters.

Inputting Activity Data

• Participants copy activity times and predecessors from Excel into Pong. Each predecessor must be correctly assigned in its respective column.

• After inputting data, users solve for project duration; results indicate a project length of 42 weeks with a critical path showing zero slack.

Analyzing Project Outputs

• Users can view Gantt charts and network diagrams that illustrate project activities alongside their predecessors.

• For scenarios involving three time estimates, users input optimistic, probable, and pessimistic times into the software.

Variance Analysis

• Upon resolving with three-time inputs, the project's duration is updated to 43 weeks while displaying standard deviations for each activity.

• Options are available to review variances of critical activities as well as visual representations through Gantt charts and network diagrams.

Compressed Time Scenarios

• The third method discussed involves transitioning from normal time to compressed time by selecting "crushing," requiring inputs for normal duration and associated costs.

• Results show that normal duration is 42 weeks but can be reduced to 30 weeks at an additional cost of $1,400 beyond the base cost of $45,500.

Cost Implications of Time Reduction

• Detailed breakdown shows how each activity's timeline can be adjusted week by week; reducing from 42 to 30 weeks incurs specific costs per activity.

• If opting for a less aggressive reduction (to 35 weeks), additional costs are outlined based on required adjustments across various activities.

This structured approach provides clarity on utilizing CPM techniques within project management contexts while leveraging software tools effectively.