Inscrivez-vous ou connectez-vous pour rejoindre votre communauté professionnelle.
PERT vs. CPM (Program Evaluation and Review Technique) are most commonly used methods for project management. There are some similarities and differences between PERT and CPM. PERT can be applied to any field requiring planned, controlled and integrated work efforts to accomplish defined objectives. On the other hand, CPM (Critical Path Method) is the method of project planning consisting of a number of well defined and clearly recognizable activities.
PERT vs. CPM
1. CPM -uses activity oriented network. PERT uses event oriented Network.
2. CPM-Durations of activity may be estimated with a fair degree of accuracy. PERT- Estimate of time for activities are not so accurate and definite.
3. CPM-It is used extensively in construction projects. PERT- It is used mostly in research and development projects, particularly projects of non-repetitive nature.
4. CPM-Deterministic concept is used. PERT-Probabilistic model concept is used.
5. CPM- can control both time and cost when planning. PERT is basically a tool for planning.
6. In CPM, cost optimization is given prime importance. The time for the completion of the project depends upon cost optimization. The cost is not directly proportioned to time. Thus, cost is the controlling factor. In PERT, it is assumed that cost varies directly with time. Attention is therefore given to minimize the time so that minimum cost results. Thus in PERT, time is the controlling factor.
PERT : method using to estimate project activities duration by use three types of estimateMost likely: the duration of the schedule activity that happens usually
Optimistic: the activity duration is based on a best-case scenario.
pessimistic: the activity duration is based on a worst-cases cenario.
Calculate the average of the three or use called PERT
CPM is deterministic ..it gives the minimum time needed to complete the project
and the duration of activity by CPM = the most likley
PERT : method using to estimate project activities duration by use three types of estimateMost likely: the duration of the schedule activity that happens usually
Optimistic: the activity duration is based on a best-case scenario.
pessimistic: the activity duration is based on a worst-cases cenario.
Calculate the average of the three or use called PERT
CPM : Critical Path Method is to Calculating the longest path to finish in project schedule
program evaluation and review technique
Anisuddin, Usman Ghani , Essam and Mubarak explained it well to understand CPM please go to http://www.oracle.com/us/products/applications/042744.pdf