Gantt Chart PERT/CPM Chart
Characteristics Uses a horizontal bar chart where the horizontal position of the bar shows the start and end of an activity and the length of the bar indicates its duration. Uses a network diagram where activities are shown as vectors and the events are displayed as nodes. The activity vectors or lines connect one node to another.
Advantages Presents a clear picture of project status. Shows all individual activities and dependencies.
Disadvantages Does not show activity dependencies such as number of hours or days required to complete an activity. Not enough detail for effective project management. Not as clear as a Gantt chart. Diagramming all dependencies gets very complicated for large projects.