Critical path method (CPM) have been used for planning and scheduling in building undertaking administration. The use of CPM varies from user to user, with some contractors feeling that critical path method (CPM) is a waste of time and money.
With the time, the use of project administration method have improved with experience. Most likely, the unsuccessful applications of CPM resulted from trying to use a level of detail far too complicated for practical use, or the schedule was developed by an outside firm with no real input by the user, or the CPM diagram was not reviewed and updated during the project.
Experience with the application of CPM on several projects has revealed the following advantages of Critical Path approach:
An important point to remember is that CPM is an open-ended procedure that permits different degrees of involvement by administration to suit their various needs and objectives. In other words, you can use CPM at whatever level of detail you feel is necessary.
However, one must always remember that you only get out of it what you put into it. It will be the responsibility of the user to choose the best technique. They are all good, and they can all be used effectively in the management of construction projects; just pick the one best liked and use it.