Company A PERT/CPM Analysis | | | | | Task Detail Table 1.1 | | | | | | | | | | | | Task | Preceding Activity | Optimistic Time to Complete (weeks) | Probable Time to Complete (weeks) | Pessimistic Time to Complete (weeks) | Expected Time to Complete (weeks) | Variance (weeks) | START | | | | | | | A | START | 2 | 3 | 4 | 3 | 0.11 | B | START | 5 | 6 | 13 | 7 | 1.78 | C | A | 3 | 4 | 8 | 4.5 | 0.69 | D | B | 10 | 11 | 15 | 11.5 | 0.69 | E | C | 4 | 5 | 6 | 5 | 0.11 | F | B | 8 | 10 | 12 | 10 | 0.44 | G | F | 4 | 6 | 11 | 6.5 | 1.36 | H | D,E | 8 | 10 | 18 | 11 | 2.78 | I | G | …show more content…
The project path of task A(3weeks) plus task C(4.5weeks) plus task E(5weeks) plus task H(11weeks) plus task J(3.5weeks) which equals 27 weeks total. The project path of task B(7 weeks) plus task D(11.5 weeks) plus task H(11weeks) plus task J(3.5weeks) which equals 33 weeks total. The project path of task B(7 weeks) plus task F(10 weeks) plus task G(6.5weeks) plus task I(6.5weeks) plus task J(3.5weeks) which equals 33.5 weeks total. EXPECTED COMPLETION TIME of entire project is 33.5 weeks total. Project Task A slack in weeks is found by taking 33.5 weeks minus 27 weeks which equals 6.5 weeks Project Task H slack in weeks is found by taking 33.5 weeks minus 33 weeks which equals 0.5 weeks Project Task F scheduled start week is found by taking task Project Expected completion Time(33.5 weeks) minus task J(3.5weeks) minus task I(6.5weeks) minus task G(6.5weeks) minus task F(10 weeks) which equals the end of the 7th week or beginning of the 8th week. Or Project Start Time plus task B(7 weeks) is the finish time for task B therefore, task F starts immediately afterward so that would make the start of task F the 8th week. Project Task I scheduled finish week is found by adding task B(7 weeks) plus task F(10 weeks) plus task G(6.5weeks) plus task I(6.5weeks) which equals the 30th week of the 33.5 week project. The probability of
D) If a specific project has multiple critical paths, all of them will have the same duration.
In order to complete our project on time, we needed to divide and assign the different tasks that make up this project. During several days of the week during the months
In almost every business, project management is critically important. The critical path method (CPM) will provide a timeline for the project manager for when tasks should be completed. In addition, providing a deadline and the negative effects it will have on the following successors if not completed on time. These many task are interdepended. Therefore, the CPM provides the start and finishes times of the tasks, and identifies the few tasks on the critical path that the project manager should observe to determine which task needs the most attention. Already discovering and incorporating the details the task or assignments may require, CPM calculates all task times, which can be measured in hours, days, weeks, and months. For any unintended manually input errors, a warning message will be provided. Including an automatic successor generator, task numbering comment, and data validation, makes it easier on the project manager.
Activity B is at the end of week 2 of a planned 4-week effort. It is 65% complete. It was to cost $190,000 when finished. Its costs to date are $150,000.
In field of project management, there are a plethora of mechanisms under perpetual reevaluation. One specific segmentation of project management under such scrutiny pertains to cost duration, which is the time and monetary costs of completing individual tasks within the project’s critical path (IBM Knowledge Center, 2016). The process of monitoring and evaluating the time and financial impacts of each task is referred to as cost duration analysis (IBM Knowledge Center, 2016). A chief concern of cost duration analysis is identifying tasks within the project’s critical path which can reduce project duration (PMI, 2013). A common approach to reducing a project’s duration is task “crashing” (PMI, p.181). According to The Project Management Institute (2013) crashing refers to the process of methodical determining the financial value of increasing a critical path task’s resources in order to decrease project duration (p.181).
44% (17 out of 39) of the tasks are complete. At present, progress is being made to model the subsystems by Vensim. However, the current task being performed should have been completed 12 days ago, on November 30th 2016. According to the schedule, the current task that should be carried out is developing the model of the subsystems. Therefore, the project is 4% (12 days) behind the schedule and a yellow warning is issued. This is due to inexperience in Vensim which led to the time taken for modelling the subsystems being longer than expected. This is because a lot of time was spent in learning how to practice Vensim as well as applying the knowledge gained in the project. Furthermore, the Gantt chart was developed assuming there is no variable affecting the schedule, such that Individual Project being the only module and not considering the workload of other modules. This led to the actual time required for this task being inaccurately estimated and should be longer than the initial estimation. The project completion date will not be affected as time can be made up by working extended hours during the semester break to catch up with the tasks that missed their target deadlines.
Below are the project 's early start, late start, early finish, late finish, and slack information completed for the original network plan. As you can see from the number highlighted in green in Figure A1, the project will take 9 days to complete from this early perspective. The critical path is noted by the numbers in red font. Tasks that are on the critical path are task that must not be delayed; otherwise, the project may not complete on time (Gray & Larson, 2014).
The completion time for the project would slightly increase adding the 3 weeks delay of task B to the 70 weeks estimated time for the project to 73 weeks, while the earliest finish time using the critical path method (CPM) the task duration estimates for the project completion would increase from 39 weeks to 41 weeks.
The project duration will be 257 calendar days with 249 days genuine project work excluding
Existing Studies mainly focuses on selecting and scheduling of projects with the assumption of being independent. There are two approaches which are commonly used for solving project selection and sequencing. The first approach is integer programming (Weingartner 1966; Cochran et al. 1971; Clark et al. 1984; Johnson et al. 1985) and the second one is dynamic programming (Weingartner 1966; Nemhauser and Ullman 1969; Morin and Esogbue 1971; Erlenkotter 1973; Morin 1974). [2] The first defect of these approaches is the difficulty of capturing the interdependencies among projects, and the second one is the inefficiency or even the infeasibility of the results in the case of responding to larger problems.
List the tasks that are on the critical path(s) of the project in part A1. If there is more than one critical path, list the tasks on each critical path as a separate list.
On Every Monday there will be Project meeting and the time lag or gap is found, measures are taken.
Project schedule can be calculated one of two ways: when we choose the Scheduling command or each time we make a change that affects schedule dates. The Critical Path Method (CPM) scheduling technique is used to calculate project schedules. CPM uses activity durations and relationships between activities to calculate the project schedule.
The labor of project plan is divided into eight different categories and there will be supervisors organizing work for each category along with their co-workers. These supervisors will have to report everyday to their chief coordinators according to their type of work. WBS structure of three-day workshop is illustrated in Diagram 1.
The traditional approach of DCS engineering project scheduling is shown in table 5. The input data’s required to perform each task are defined in right side of the table.