Basics in Building Construction

Basics in Building Construction 4(2+2)

Lesson 31 and 32 : Construction Project Management

PERT And CPM

Time is the most important and essential variable in PERT system of planning and control. CPM networks are activity oriented while PERT networks are event- oriented. CPM networks are generally used for repetitive type projects, or for those projects for which accurate estimate of time for completion of each activity can be made. PERT has been used most frequently in research and developmental projects

Advantages of PERT/ CPM

The advantages of PERT / CPM network methods are :

1. In the network technique of planning and scheduling one is compelled to examine the complete project in advance and interact with every one who is to be involved in the project thereby evolving a workable plan of the project. One is also forced to decide upon the extent of splitting of the project into small activities and to establish logical relationship between different activities.
2. It helps in diving activities funwise and responsibility wise which makes it possible to cooperate the works of different agencies involved in the completion of the project.


3. It enables one to determine reasonably correct schedule for the completion of different and the project as a whole based on the availability of resources (Men, materials, money and machines etc).


4. It permits one to take advance actions and timely decisions to reduce delays in completion of different events.


5. It permits greater flexibility in having optimum utilization of resources thereby effecting economy.


6. It identifies activities critical to different stages of projects completion which in turn enables the management to pay greater attention to fewer activities instead of concentrating on all activities at all times with equal emphasis.


7. It enables one to exercise effective control on the project by way of periodic review and to adopt timely corrective measures to minimize slippages in the completion of the project.