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These are the main points of exams are: Activity on Node, Precedence, Resource Information, Project Duration, Resource Histograms, Work Breakdown Structure, Float, Critical Path, Milestone, Project Manager
Typology: Exams
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(NFQ – Level 8)
Instructions You are required to answer QUESTION ONE and any TWO of the remaining three questions. Question one carries 40%. All other questions carry 30%.
Examiners: Dr. C. A. Frehill Mr. J. Mason Mr. P. Hannon Dr. G. Woods
PPT_AMT 4 Ltd. is to develop a thermal cycling and fatigue testing rig. The rig is to be designed, built, commissioned and tested before being placed into mass production. Each activity is identified by an ID and the precedence and resource information for the project is given in table 1. All links are finish to start unless stated otherwise.
(i) Draw the activity-on-node diagram for the project. [12 marks] (ii) Calculate the project duration and indicate the critical path activities. [4 marks] (iii) Draw the resource histograms for resources AMT and PPT. What is the maximum number of AMT and PPT that will be required and when will these maximum numbers be required? [12 marks] (iv) If the resources available to the project are 3 AMT and 3 PPT, draw the revised resource histograms and determine the new project duration. [12 marks]
Activities Resources ID Duration (days)
Predecessors AMT PPT
A 1 3 2 B 7 A 2 2 C 1 B 0 1 D 1 C 2 1 E 2 A 1 0 F 1 E 1 1 G 4 F 3 4 H 1 F start-to-start 0 1 I 1 H 3 3 J 3 G, I 2 2 K 1 J, D 1 1 Table 1 Tasks, resources and dependency relationships for Project A
(a) Draw the baseline and actual Gantt charts on the attached sheets for Project B shown below. Note: All links are finish-to-start except otherwise stated. [8 marks]
(b) Calculate the Schedule Performance Index and Cost Performance index at the end of each week of Project B on the attached sheet. [10 marks]
(c) Comment on the Schedule Performance Index and Cost Performance Index at the end of week 4. [4 marks]
(d) Using the final values for Schedule Performance Index and Cost Performance Index calculate the estimate at completion (EAC) and the estimated total duration for project B. [3 marks] (e) Comment on the results obtained. [5 marks]
Activity Predecessor Baseline Duration (Weeks)
Actual Start Date
Actual Duration (Weeks)
Baseline Cost (€)
Actual Cost (€) A - 3 1/W1 2 6000 8000 B A SS + 2W lag 4 1/W3 5 12000 17500 C A + 1W lag 2 1/W4 3 9000 12000 D C 2 1/W7 50% complete 20000 E D 1 5000 Table 2 Baseline and Actual Durations and Costs for Project B
(a) An accurate cost estimate is essential for any project. Discuss the various methods of estimating costs, indicating at what stage of a project cycle each method is used. [6 marks] (b) Detail with the aid of examples, the types of cost categories that would be included during the generation of a project cost estimate. [8 marks]
(c) The estimated cost for two projects, Project A and Project B are €60000 and € respectively. The expected profits generated by these projects are given in Table 1 below. Evaluate these projects using the following techniques: (i) Return on Investment; [2 marks] (ii) Straight Payback; [2 marks] (iii) Net Present Value with a Discount Rate of 13%. [4 marks] (iv) Comment on the results obtained. [4 marks]
(d) Explain how a suitable Discount Rate is chosen for a project. [4 marks]
Year 1 Project A Project B 1 25000 10000 2 18000 18000 3 15000 20000 4 16000 20000 5 12000 30000 Table 1 Expected Profits from Projects A and B over the next five years
Interest Rates Year 11% 13% 15% 17% 1 .9009 .8850 .8696. 2 .8115 .7831 .7561. 3 .7312 .6931 .6575. 4 .6587 .6133 .5718. 5 .5935 .5428 .4972. Table 4 Table of Discounting Factors
BCWS
Activity
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
Week 7
Week 8
Week 9
Week 10
BCWP
ACWP
BCWS
Weekly Cumulative
BCWP
Weekly Cumulative
ACWP
Weekly Cumulative
CPI SPI
