Project management Essay Example | Topics and Well Written Essays - 2500 words - 1

Project management - Essay Example As recommended by literature (Field and Keller 2007, p.198), the forward pass mode has been used for calculating the ETS for each of the activities. The mode is based on the assumption that all previous activities have been finalised. The following equation has been used in calculating its values: ETSj  = max (ETSi  + Ti  Ã¢â‚¬â€œ i - when an activity is linked to j on an arc from i to j). The values of ETS for each of the activities are provided in a Table 1. Early Finish Time (EFT) is calculated by adding the duration time of each activity to its ETS. The Late Start Time (LTS) is calculated through the use of backward pass mode. It is based on the assumption that the latest time the last event can occur is equal to the last event ETS. The following equation has been used in calculating its values: LTSi  = MIN (LTSj  - Ti  -j is an activity linked to i on the path from i to j). The values of LTS for each of the activities are provided in a Table 1. Float The total float in the scheduling provides information on the accepted event delay that will not result in total delay of the whole project (Field and Keller 2007, PMI 2008). It is the difference between the LTS and ETS of each project activity, i.e. Fi = LTSi–ETSi 3. The project duration and the critical path. The minimum required time for the completion of the project is 80 days. A final step in designing the network is the identification of the critical path. A critical path is made out of the critical activities of the project. An activity is assessed as critical when if delayed, will cause a delay of the whole project duration by an equal amount of time (Field and Keller 2007:183, PMI 2008). For a critical activity: The ETS and the LTS of the activity must be equal at the each node; The Float must be equal to 0; Table 1. Task Name Duration Pred. Early Start Early Finish Late Start Late Finish Float Critical path A 4 - 0 4 0 4 0 yes B 4 A 4 8 4 8 0 yes C 2 A 4 6 14 16 10 no D 6 A 4 10 10 16 6 no E 5 A 4 9 11 16 7 no F 8 B 8 16 8 16 0 yes G 10 C,D,E,F 16 26 16 26 0 yes H 7 G 26 33 26 33 0 yes I 6 H 33 39 33 39 0 yes J 5 H 33 38 34 39 1 no K 7 I,J 39 46 39 46 0 yes L 14 K 46 60 46 60 0 yes M 8 L 60 68 60 68 0 yes N 2 M 68 70 68 70 0 yes O 2 N 70 72 76 78 6 no P 8 N 70 78 70 78 0 yes Q 2 O,P 78 80 78 80 0 yes 1. Different Project Scenarios If the project starts on Monday 21st, May, 2011, what is the earliest date it can be completed using a 5 day working week? For calculating the schedule and the earliest date the project can be completed, the project management tool - Gant chart is used, presented in Appendix 2. The calculation is as follows: the total duration project of the (80) is divided with 5 (working days in the week) = 16 weeks. The earliest date is for completion of the project is Friday, September 2nd, 2011. If the following happened what would be the effect on the duration of the whole project? Explain the reasons. a. A two day delay in activity