QUESTION ONE County Engineering and Design is a consulting firm based in Lusaka Zambia The firm has won the tender for the design and supervision of construction of office accommodation under the National Pension Scheme Authority (NAPSA) Table 1 below shows the activities required to be completed and their respective timelines from the start to the end of the project Table 1: Network Information Activity Time Activity Description A B Application approval Construction plans Traffic Siudy Service availability check Start report Commission approval Supervise construction Occupancy Preceding Activity None A A B,C BCD F E, G 5 15 10 5 15 10 170 35 E F G H As Senior Engineer - Project Planning, at the firm you have been assigned to take the lead in the planning and implementation of this project Required 49 8.2 13.1 (a) Prepare a complete Arrow-on-node project network clearly showing the activities, timelines for each activity and the dependencies [15 marks] (b) Perform the forward and back ward passes on the network and determine the Early & Late start and Early & late finish times for each activity. What is the total project duration? [8 marks] (C) Calculate the total float for the project and identify all the critical activities and the critical path [7 Marks) ol