CPM - Critical Path Method reportand presendation
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29-10-2010, 02:37 PM
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pert MITTAL.zip (Size: 304.5 KB / Downloads: 43) PM - Critical Path Method
In CPM activities are shown as a network of precedence relationships using activity-on-node network construction
Single estimate of activity time
Deterministic activity times
USED IN : Production management - for the jobs of repetitive in nature where the activity time estimates can be predicted with considerable certainty due to the existence of past experience.
Joined: Apr 2012
14-08-2012, 10:05 AM
CRITICAL PATH METHOD
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CPM network are usually used for repetitive type of project and implimentations, where fairly accurate estimate of time can be made for the activities of the project and implimentation.
The activities of these project and implimentations are characteristically subject to relatively small amount of variation.
CPM is found to be of much use in the construction of massive structures like dams, bridges, tunnels, high rise buildings, etc.,
CPM is not suitable for research and development type of project and implimentations.
In the network, it is important to know the criticality of the activity, time available to perform the activity provided date of completion of a project and implimentation. In the previous section we have already talked about various method of obtaining activity duration. We shall be interested in the question that
How early we can start the activity.
How much we can delay the activity such that target date of completion of project and implimentation is not affected
What the time available to perform the activity.
To answer the above question we shall associate (define) following time with an activity
a) Early start time
b) Early finish time
c) Latest start time
d) Latest finish time
Criticality and critical activity
Sub critical activity when FT is +ve needs normal attention.
Critical activity when FT is zero extra attention.
Super critical activity when FT is –ve needs special attention.