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PERT/CPM Easy step-by-step Computation

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This solves problems in Project Evaluation and Review Technique/Critical Path Method (PERT/CPM). This is a step by step instructional guide in solving for Earliest Start Time, Earliest Finish Time, Latest Start Time, Latest Finish Time, slack time, and critical path.

Clear illustrations identify the Earliest Start Time, Earliest Finish Time, Latest Start Time, Latest Finish Time, slack time, and critical path.

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Solution Summary

PERT/CPM is not easy to calculate. It needs careful analysis and step-by-step instruction. With the attached solution, solving PERT/CPM problems becomes easy. Included here is the computation of Earliest Start Time, Earliest Finish Time, Latest Start Time, Latest Finish Time, slack time, and critical path.

Illustrations and figures are provided for easy understanding.

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In creating the PERT/CPM Network, you have to consider the following:
a.) forward pass - the direction and computation of time is from left to right. There were two dummy lines created (the dashed lines) because in PERT/CPM no nodes should be left hanging. (please see attached file)
In computing the time, steps have to be followed:
...

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