Presentation cpm.pdf , Quantative techniques in management
- 2. Introduction- CPM:- • Critical path is a sequence of activity between a project's start and finish that takes the longest time to complete. • Critical path method is based on mathematical calculations and it is used for scheduling project activities. In 1950, Critical path method(CPM) was developed by Kelly and Walker to assist in building and maintains of chemical plants. • The initial critical path method was used for managing plant maintenance projects.
- 3. In applying CPM, the following five steps are often followed: • Define the required tasks and arrange them in an ordered, sequenced list. • Create a flowchart or other critical path diagram showing each task in relation to the others. • Identify the critical and non-critical relationships or paths among the tasks. • Determine the expected end date or execution or completion time for each task. • Locate or devise alternatives or backups for the most critical paths.
- 4. Benefits of CPM • Useful at many stages of project management • Mathematically simple • Give critical path and float time Provide project documentation • Useful in monitoring costs • Visual representation
- 5. Limitations to CPM • Specified precedence relationship • Activity time estimates are subjective and depend on judgment • Can be more difficult understand ten grant charts The time needed for tasks is not as clear as with grant charts