Identify the various activities involved, give the relationship among the activities. Assume all the necessary data required.

These types of charts were introduced by Henry Gantt around 1900 AD.

A bar chart consists of two co-ordinate axes one representing the jobs or activities to be performed and the other representing time elapsed.

Each bar represents one specific job or activity of the project, the beginning and end of each bar represents the time of start and time of finish of that activity.

A] The following steps are involved in preparing the bar chart

• divide the project into many activities
• list out the activities
• find the inter relationship among these activities
• arrange the activities in a systematic way
• calculate the quantity of work and the time required
• draw it according to scale

B] Following are the limitations of Bar charts

1. They can be used only for small projects.

2. It does not show inter-dependencies between the various activities in the project. This is a serious limitation of Bar chart.

3. The progress of the work in the project can not be monitored scientifically.

4. Delays in the work can not be detected.

5. It does not indicate the critical of the project.

6. It gives some idea about the physical progress of the project but the financial aspect involved is not known.

7. Bar chart can not be used as a controlling device by the project manager to take any timely action.