How to plot crashing graph in Project management

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lets learn about crashing in project management in this article…


Crashing  in project management can be seen as a schedule compression method that analyses cost and schedule trade offs to determine how to obtain the greatest schedule compression for the least incremental cost.  When you are crashing a project, you are allocating more resources to activities on

the critical path so that they can finish on time. 

Allocating resources to activities on the critical path will help you to shorten the duration of your project on the long run.
There are some procedures that you need to follow when you are doing crashing for a project.


#1: You need to understand the normal time it will take for the project task to complete. Understanding the normal time will help you to make the best decision that you need to take in order to compress your project.
#2: You need to identify the costs that are associated with the normal duration. That means you need to know how much you are to spend if the project is to take the normal duration. When you understand the cost of the project, you will be able to juxtapose those project cost with that cost of the new cost that you need to reduce the time frame for the project. 

#3: You need to know how much the project will cost under crashing condition. When you know the cost that the project will take under normal condition, will be able to know the cost of the project on task by task basis so that you will not make crashing project hastily.
#4: You need to know the duration estimate under crashing condition as well.

Crash cost plotting methods which is part of crashing graph are techniques for analysing the crash costs by creating a graph or visuals that clearly illustrates those costs. Plotting a crashing graph allows decision makers to decide on which of the project activities to crash at any given time.
crashing graph


In plotting this graph, the X axis represents the duration and the Y axis show the costs of crashing the project. It is always plotted from left to right, starting with the activity with the lowest cost up to the ones with higher costs.

Activities with flatter scope are described as activities with relatively larger time saving for the associated cost.


You should note that crashing may result in increased risk and rework for the project manager. In order to avoid this m the project team need to identify the point where it becomes impractical to crash the schedule any further.

Action Point
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