Project Management

Topics: Project management, Critical path method, Delay Pages: 6 (1450 words) Published: September 11, 2013
Table of Contents
Activity on the node network diagram3
Determination of the timing of activities and the total float4 The project duration and the critical path..................................................................................................................................................................5 The earliest date the project can be completed given the starting date - Monday 7th May 2012..........................................................................5 The effect on the duration of the whole project if:.....................................................................................................................................................5 Activity F is delayed by one day5

Activity N is delayed by one day6
Activity O is completed one day early ..........................................................................................................................................................................6 The limitations of Network diagrams..........................................................................................................................................................................6

7| 5| 12|
| D| |
7| 0| 12|
1. Activity on the node network diagram
5| 2| 7|
| C| |
5| 0| 7|

0| 4| 4|
| A| |
0| 0| 4|
4| 1| 5|
| B| |
4| 0| 5|

12| 1| 13|
| E| |
21| 9| 22|
12| 6| 18|
| F| |
16| 4| 22|
12| 8| 20|
| G| |
14| 2| 22|
12| 10| 22|
| H| |
12| 0| 22|

22| 10| 32|
| I| |
22| 0| 32|

32| 4| 36|
| J| |
32| 0| 36|
36| 1| 37|
| K| |
45| 9| 46|

36| 6| 42|
| L| |
40| 4| 46|
36| 10| 46|
| M| |
36| 0| 46|
36| 2| 38|
| N| |
44| 8| 46|

46| 4| 50|
| O| |
46| 0| 50|
50| 1| 51|
| P| |
50| 0| 51|
51| 1| 52|
| Q| |
51| 0| 52|

Legend:
Earliest start time (EST)| Duration| Earliest finish time (EFT)| | Task | |
Latest start time (LST)| Total Float| Latest finish time (LFT)|
Critical Path The project duration: 52 days
A, B, C, D, H, I,J,M,O,P,Q

2. Determination of the timing of activities and the total float
The earliest start time (EST), the earliest time at which the node could be reached, and the earliest finish time (EFT), the latest time by which the node must be reached if the project is to finsh by its required completion date, are produced by a forward pass through the network. The first step of the forward pass is calculating the earliest start time, commencing from the unique project start node and finishing at the unique project completion node. The first task of the project is A, hence the earliest start time of task A may be set to zero since no information has been given as to the starting day of the task. The next step is determining the EFT, which is calculated by adding the EST to the duration of the task. Given the duration of every task, the proces of calculating the EFT of every task is quite straight forward assuming that the EST of every task is the EFT of the previous task. However, when it comes to a merge activity the largest value must be taken.

The latest event times, refering to the latest start time (LST) and the latest finish time (LFT), are the times when a particular task may commence without delaying the project duration and when the particular task may be completed without delaying the project duration. Usually such times are required when the project has an established target finish date. The latest event times are calculated using the backward pass technique. Such technique begins by determining the latest finish time of the last task of the project completion and works backwards to the start node. Since no inforamtion has been given regarding the target finish date of the...
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