Compare the main strengths and weaknesses of the gantt chart and pert for project management

The project have various activities and they need to be managed well and understood well. The Henry Gantt developed the Gantt chart. They help in identifying the activities in the project and the expected time of completion of each activity. With the help of this the managers can visualize the project by time frame. So, the advantages of the Gantt chart is that they provide visualization of project, manager can identify start and end time of each activity. The advantage of this tool is that it is more accurate and they can be used for large projects. Disadvantage is it need time to data collection and information extraction to process the pert. Pre-estimation of task and the time of each task is needed.