The critical path in project management is the line of project network which sums up to the large overall time, in any case if that longest length has drift or not. This determines the briefest time possible to finish the project. The method of the critical path is step wise technique for project management to recognize the exercise or activities on the critical path.

It is a way to deal with project schedule that breaks the project into several s of work, show that all in flow chart, and after that figures the duration of project in view of estimated lengths for every . It recognizes undertakings that are basic, time-wise, in finishing the project. The critical path method helps us in managing the project in two different ways.

There are various steps for the calculation of critical path and we will discuss it in simple 6 steps.

# Step 1: Specify each of the activity

Utilizing the work breakdown structure, we have to recognize every action or task required in the project work. This activity detail list must include only activities which are of higher levels. At the point when detailed exercises are utilized, the critical path examination may turn out to be excessively unpredictable, making it impossible to maintain and manage.

The initial step is to distinguish the fundamental deliverables of the project. At that point you can begin separating the higher level exercises into small pieces of work.

You can pick how to show your work breakdown structure. A few people utilize a tree like structure, while others use records or tables. A diagram is one of the simplest approaches to speak to a work breakdown structure.

# Step 2: Establish Dependency (Activity Sequence)

A few exercises will rely on upon the others to get finish. Listing the quick background of every activity will help us distinguish the right order. To accurately recognize exercises and their priority, approach yourself these three inquiries for every action on your list from the first step:

- What tasks should occur before this assignment happens?
- What tasks should be done in the meantime as this assignment?
- What tasks should happen directly after the current task?

# Step 3: Draw the Network Diagram

When you have distinguished the exercises and their conditions, you can now draw the CPA which is critical path analysis chart, called network diagram. The network diagram is a visual representation of the sequence of our exercises in view of conditions.

This critical path graph or diagram should be drawn by free hand, but there are currently such programs that can make this graph for us.

# Step 4: Estimate Completion Time of the Activity

By Utilizing past record or the details of an experienced teammate, we should now calculate the time required to finish every activity. On the off chance that we are dealing with a small project, we will estimate the time in all these days. If that we are working on a tough or complex task, we may need to calculate the time in weeks.

If you don’t feel better in using your best figure calculation, you can utilize the 3 point estimation technique, which is intended to put more weight on the most sensible time period.

In 3 point estimation, you should think of 3 time estimates for each and every task, in view of related knowledge or best speculations. The estimation technique is introduced in equations so as to compute the time term all the more precisely.

a = the best case calculation

m = most likely calculation

b = the least preferred calculation

These 3 qualities recognize what happens in an ideal state, what is the no doubt, and what happens in the worst situation.

Once you have distinguished these qualities, you can utilize them in two distinct equations. The first one is utilized to locate the Weighted Average, which put more weight on the most preferred value. The equation is as given. E remains for Estimate, and the 4 and 6 represent to the standard strategy to place more weight on the most reasonable worth.

E = (a + 4m + b)/6

The second method for utilizing these qualities is known as Triangular Distribution. The principle contrast is that this technique doesn’t put more weight on the most preferred value. Formula is given below. E remains for Estimate, and the 3 speaks to the standard strategy.

E = (a + m + b)/3

# Step 5: Identify the Critical Path

There are 2 ways you can now distinguish the critical path. You can observe your network graph and just distinguish the longest way all through the network. The longest succession of exercises on the path. Make certain to search for the longest way regarding longest span in days, not the path with the most boxes or node.

You can likewise distinguish critical activity with the Forward/Backward Pass method, recognizing the soonest begin and complete times, and the most recent start and finish times for every movement.

If you have different critical paths, you will keep running into system affectability. The schedule of project is taken sensitively if the critical path is liable to change once the task starts. Project with more critical ways, higher is the probability of an adjustment in timetable.

# Step 6: Update the Critical Path Diagram to Show Progress

As the task advance, you will get to learn about the real completion times. The network diagram then get update to incorporate this data (instead of keeping on utilizing estimations).

By upgrading the network graph as new data develops, you may recalculate an alternate critical path. You will likely have a more practical perspective of the project completion due date and will have the capacity to tell on the off chance that you are on track or falling behind.

Isn’t it a easiest way in six steps to determine critical path of any project schedule? If you have any question or suggestion regarding Critical Path Calculations, please feel free to post them in comments section or you can contact us from here.