Answer Happy

Question 4 You have been appointed to the position of Project Manager for the development of a Surface Mine. From the pven data complete the following a) Draw the Work Breakdown Structure of the Mine project resulting from the tasks listed in the given table (5 marks b) Formulate a Gantt chart or a network diagram for the surface mine construction tasks. (5 marks) c) Determine the slack time for each task. (2 marks) d) Determine the earliest and latest start time for each task (2 marks) e) Indicate the critical path and expected duration of the construction project (2 marks) 1) Describe the impact on the critical path and project duration if the truck erections must use the same pad and crane as the shovel erection (2 marks) Describe the impact on the critical path and project duration if the connecting rail line cannot be started until site preparation is completed and the rail loop cannot be started until site preparation and the connecting rail line are completed. (2 marks) Surface Mine Construction Task durations in months Task Description Precedents Duration A Access Road None B Site Preparation А C Main Power Feed Line B 2 D Main Substation 8 E Substation A D 2 F Substation B El G Pit Powerlines С H Power Test FAGI 1 Water Tank and Lines B J Sewage Plant and Lines B K Crushing and Blending Plant B L Connecting Rail Line None M Mine Rail Loop BI N Mine Haul Road B O Temporary Office B P Shovel Erection BI Truck Erections 8 R Waste Removal HNOPO S Changehouse B T Shops B U Offices B V Production Equipment Erections B Anna Siam TYTT 6
6 S T U V w waste Removal Changehouse Shops Offices Production Equipment Erections Production Start-up BI B B B LJKLMRSTAVI 3 2 (c) An office block construction project is scheduled to take a duration of 5 months at a budgeted cost of NSS 000 000. At the end of the third month, the actual cost of work completed (ACWP) is N54 000 000, while according to the progress measurements the budgeted cost of the work done/performed (BWP) is N$3 000 000. The budgeted cost of actual work scheduled (BCWS) N$3 500 000 and it is estimated that an amount (ECW) of N52 500 000 will be required to complete the project By how much is the project forecast to overrun the budget cost? (2 marks) 6) What is the estimated completion? (1 mark) y comment on the progress achieved in relation to expectation, both in terms of schedule and cost (2 marks) Time value of money compound interest formulas: F = P(1 + i)" F P= (1 + i)" [(1 + i)"-] F = A. [11+1)^-] i(1+i)" i Pza