Work Pm

Problems

NOTE: Many of the AON graphics in this solutions set depict the start day of the successor activity to be the same day as the completion of the predecessor. This is consistent with the presentation in the text. It is not consistent with the result that would be obtained using Microsoft® Project, where the start day of the successor is always the next working day after the completion of the predecessor.

Problem 2:

Problem 4:

a) The critical path is B-E-G.

b) 23 work periods.

Problem 6:

PDM Diagram 6a

PDM Diagram 6b

Problem 8:

Please see note about network depiction preceding Problem 1

a) The critical path activities are A, C, E, and G.

b) The project’s duration is 22 days.

c) Yes, activity B can be delayed one day without delaying the completion of the project.

Problem 10:

[pic]

a) The critical path is AC CB BE EF.

b) The only event with slack is “D” at 3 days.

c) If “D” were the final event in the network, then the critical path would be AC CB BD.

d) The following spreadsheet excerpt illustrates the calculation of the probability of completion in 14 days:

|Task |a |m |b |Expected |Variance |Std Dev. |

|AB |3 |6 |9 |6.0 |1.00 |1.00 |

|AC |1 |4 |7 |4.0 |1.00 |1.00 |

|CB |0 |3 |6 |3.0 |1.00 |1.00 |

|CD |3 |3 |3 |3.0 |0.00 |0.00 |

|CE |2 |2 |8 |3.0 |1.00 |1.00 |

|BD |0 |0 |6 |1.0 |1.00 |1.00 |

|BE |2 |5...