Project Scheduling Essay Example | Topics and Well Written Essays - 4500 words

Project Scheduling - Essay Example(Dilworth 1992, p.567)Using the precedence diagram and activity schedule given, the following bar chart was made masking earliest and latest dates for activities A through K. To work out the early start and early give the axe of our net income unitary has to start at the commencement activity, that is the activity/ activities with no predecessor. The early start of a job in a interlock is the earliest that a job raft begin. In the reason of a job with predecessors, the early start of a job is the largest of the early finish times of its predecessors. The early finish of a job is its early finish plus its own distance. This procedure of starting at the beginning and working out the early start and early finish of the activities in a network is often referred to as forward pass.without extending the check time of the project. Late finish of an activity is the late start of the activity that succeeds. If an activity has more than ane success or, then the smaller of the late starts is to be taken. In the case of activities that do not have a successor, the late finish is taken as the total time of the project. The late start of such activities is their late finish less their duration.Working out the late start of activities will help answer the questions can the start of some activities be delay, and if so by how much It must be mentioned at this juncture that this is a luxury that does not apply to activities on the critical path. By definition a critical path is the longest path or sequence of connected activities, through the network (Wiest & Levy 1977, p.26). card 1 below gives the early start (ES), early finish (EF), late start (LS) and late finish (LF) for the activities under normal duration.ActivityESEFLSLF slack upA065115B0104144C0140140D61011155E141614160F161716170G141915201H172517250J192321252K192420251Table 1Bar chart showing earliest and latest dates for each activity, using normal cost durations3Critical P ath under Normal Cost DurationAn analysis of the network in fig 1 shows that the An analysis of the data given under normal cost duration shows that the path CEFH is the longest sequence of connected activities and it is therefore the critical path. The duration of the critical path is 25 weeks. In other words this is the total duration of the project. Although by definition a critical path in a network is of the longest duration, it does not mean that there cannot be more than one critical path. Besides by lengthening or shortening the duration of one or more activities, the critical path in a network could change. (Wagner 1972, p. 186). The total normal cost of all the activities is 96000 pounds. To this add the weekly setup cost 4500 pounds per week and the total cost of the project is 208500 pounds. Activities rescheduled after 16 weeksIn a review of project status 16 weeks from its start it was observed that activities A, B, C, and E were all completed on time. However activit y F has been delayed by a 4week and the duration of activity D is now 12 weeks. An extension of a week has been granted. The assumption here