Question 2 (14 marks) a) Briefly describe the term Work Breakdown Structure (WBS) in Project Management and show how it could be integrated with Organisational Breakdown Structure (OBS) and Cost Breakdown Structure (CBS) of a project using an appropriate sketch (4 marks) b) Your Supervisor has requested to develop a Precedence Diagram (PDM) - AON network for a project using the information illustrated in the Table below (Hint: draw the Finish to Start relationships first). ID A B D E Duration Finish-to-Start Finish-to-Start Additional Lag Relationship Lag Predecessor Lag 4 None 0 None 0 6 0 None 0 10 A 0 Start-Start C to D 20 8 B 8 Finish-Finish D to F 18 15 Start-Finish Eto H 12 D 0 14 C 0 Finish-Finish F to G 15 12 D 0 None 0 15 F 0 0 G 0 20 F G H TOO None i. Draw the complete PDM network showing all the links with relevant lag factors and estimate ES, EF, LS, LF, and Total Float (TF) (8 marks) ii. Show the Critical Path and the overall project time (2 marks)