The manpower requirement for each activity in a construction project is given below: Activity Activity Duration Manpower Requirement per day 1-2 4 4 1-3 2 3 1-4 3 3 2-4 5 5 3-4 6 3 4-5 2 4 5-6 3 3 2-5 1 6 4-6 4 5 All the activities are scheduled to start at its Earliest Start Times. 1) Draw the project network and determine the critical path and duration 2) Perform Resource Loading and Leveling using a time-scale network. 3) If only 10 men are available for the execution of the project, perform resource allocation