Question 1. Answer the following question based on the data from a project in Table-1 Table 1: Project activities and durations Activity Description Predecessors P Build internal components Q Modify roof and floor P R Construct collection stack Q S Pour concrete and install frame Q.P T Build high-temperature burner RES U Install pollution control system T V Install air pollution device RST w Commissioning U, V Duration (days) 4 4 6 10 6 5 w Woo 3 a) Draw AON Network Diagram of this project and calculate the ES, EF, LS, LF and SLACKS of each activity. (20 marks) b) What is the total duration of this project? (2 marks) The total duration of this project ..... c) Identify the Critical Activities and Non-Critical Activities for this project. (8 marks) Critical Activities of this project .......... Non-Critical Activities of this project. d) Draw the Gantt Chart of this project based on ES and EF. (10 marks) e) Draw AOA Network Diagram of this project. (10 marks)