Question

1. Consider the following project. Activity Duration (weeks)5 Immediate Predecessor(s) Cost (S) 1000 | 400 I 200 | 1200 | 500 | 700 | 1200 | 800 | 1800 | 1500 | 400 (a) Construct the activity-on-node (AoN) network for the relations among the activities in the (b) Using the activity-on-node (Ao) network developed in part (a), determine the critical path and the minimum time required to complete the project. Develop the earliest start and finish times, the latest finish and start times, the free float, and the total float of each activity (c) Draw the Early Start (ES) schedule (i.e., bar chart) showing the BCWS. (d) Suppose after 7 weeks, activities A, B, and E have been completed, activity D is 50 percent completed, and activity C is 80 percent completed. Construct an updated network for the project, and determine the updated project duration. (e) Draw the bar chart updated at the end of week 7 (BCWP) () In a single figure, plot the BCWS, ACWP and BCWP curves as a function of time during the first 7 weeks. (g) Describe the status of the project at the end of week 7

Answer 1

Activity On node diagram is a diagram which show the activity flow in a particular project.

It indicates which activity to be done before any other activity in project.

Critical Path in the AON diagram is the path which requires the maximum time to complete the project.

ES (earliest start) is the time which indicates the early time in which the activity can start.

EF (early finish) is the time which indicates the earliest finish time in which the activity can finish.

Activiby on Node Disgrern (5,7)-ㄑㄧ ㄧㄧ (712) 5 (7, 13) C13, Is 6 Co,s) (53) 3 Co,11) 丁 5, 6) C19 Projeet Compleion Paths: - A-E-H-丁= 13 CRITICAL PATH = | A-B-C-F-K-J mum Time to camplete projed can be 13 weeks The earliest stuvt omd Finich Times of cach actvity is indi caded in Round Brackets