The following is the GANTT chart for the production of heavy machines: Order of raw materials (5 weeks) → Pre-Design (4 weeks) → Market analysis (2 weeks) → Revise the design (2 weeks) → Construction of Prototype (3 weeks) → Test of prototype (3 weeks) → Production of machines (4 weeks)
The critical path of the GANTT chart for the production of heavy machines is Pre-design, Construction of Prototype, Test of Prototype, and Production of Machines.