Code Activities A Determine System Requirements 10 Duration Days Predecessors No Predecessor B Design System Layout 15 A C Obtain New Water Line 20 A D Obtain Permits 32 B E Order/Receive Parts 35 B F Install New System 5 D and E G Test New System 2 C and F H Deactivate Old System 1 G You are required to: 1. Correctly draw the network diagram (4 marks) 2. Find the critical path and its duration (2 marks) 3. Find ES, EF,LS, LF for each activity (4 marks)