Topic 9 PowerPoint

Topic 9 PowerPoint - Topic 9 Project Management 1...

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Unformatted text preview: Topic 9 Project Management 1 Characteristics of a Project q q q q A unique, one-time effort Requires the completion of a large number of Requires interrelated activities interrelated Resources, such as time and/or money, are limited Typically has its own management structure 2 Project Management q q q A project manager is appointed to head the project project management team management The team members are drawn from various The departments and are temporarily assigned to the project project The team is responsible for planning, scheduling and The controlling the project to its completion controlling Plan Schedule Control 3 Planning Projects q q q Tasks: Develop internal and external resource requirements Develop and time-phase them to the project activities and Means of Task Accomplishment: Activity descriptions, milestone charts, cash flow Activity charts, CPM, engineering designs, time and cost CPM, estimates, material delivery plans, and so on. estimates, Timing of Tasks: Before project is begun and modified as required Before during project during q q q 4 Manager’s View of CPM INPUTS INPUTS • List of project activities List • Precedence relationship among activities Precedence • Estimate of each activity’s duration Estimate CPM processing procedures OUTPUTS OUTPUTS • Estimated duration of project Estimated • Identification of critical activities Identification • Amount of slack for each activity Amount 5 Example: House Hunting q Project – buy a house Agent (a) Preapproved (b) Financial agent (c) Financial documents (d) Down payment (e) Search and visit houses Search (f) (f) Lawyer and Inspector (g) Put offer (h) Paperwork (i) Get loan (j) q q q q q q q q q q 6 CPM Terminology CPM Terminology q Activity A task or a certain amount of work required in the task project project Requires time to complete Represented by an arrow q q q Hire an Agent 7 CPM Terminology q Event Signals the beginning or ending of an activity Designates a point in time Represented by a circle (node) q q q Find the potential houses 8 Example q q q q q q q q Event 1: Start Event 2: Find the potential houses Event 3: Figure out how much I can afford Event 4: Find the best mortgage provider Event 5: Satisfied house(s) Event 6: Paperwork and Inspection Event 7: Get the loan Event 8: End (closing) 9 Example f) rch ( Sea Event 5: Satisfaction ) h) (h r( er ffe off tt o Pu Pu Event 2: House Agent (a) Law yer /Ins pec t (g ) Event 6: Inspection Event 1: Start Prea ppro ved ( b) Pap erwo rk (i) Prov ide d ocum Event3: Budget ents (d) ) y (e a np w Do (j) n loa t Ge Event 8: End Financial agent (c) Event 7: Loan Event 4:Bank 10 CPM Terminology q q q Path A connected sequence of activities leading connected from the starting event to the ending event from Critical Path The longest path (time); determines the The project duration project Critical Activities All of the activities that make up the critical All path path q q q 11 CPM Example q CPM Network House f, 15 g, 17 Paperwork Satisfaction a, 6 Start h, 9 i, 6 End b, 8 Budget d, 13 e, 9 j, 12 Loan c, 5 Bank 12 CPM Example q Paths Enumerated Path a-f-h a-g-I b-d-j c-e-j Length of Path 6 + 15 + 9 = 30 6 + 17 + 6 = 29 8 + 13 + 12 = 33* 5 + 9 + 12 = 26 * Critical path 13 Not Enough…, Slack! q Slack is the maximum amount of time that this activity Slack can be delay in its completion before it becomes a critical activity, i.e., delays completion of the project critical 14 CPM Terminology q q q q Earliest Start (ES) The earliest that an activity can begin; The assumes all preceding activities have been completed completed Earliest Finish (EF) ES + activity time Latest Finish (LF) The latest that an activity can finish and not The change the project completion time change Latest Start (LS) LF - activity time q q q q 15 How to calculate the slack q Determine the slack for each activity Working from the end of the project network Working (from right to left), find the LF and the LS for each activity activity Compute the activity’s slack slack = LS - ES = LF - EF slack q q 16 CPM Example q ES and EF Times a, 6 06 b, 8 08 c, 5 05 f, 15 g, 17 i, 6 h, 9 d, 13 j, 12 e, 9 17 CPM Example q ES and EF Times a, 6 06 b, 8 08 c, 5 05 f, 15 6 21 g, 17 6 23 i, 6 h, 9 d, 13 8 21 e, 9 5 14 j, 12 18 CPM Example q ES and EF Times a, 6 06 b, 8 08 c, 5 05 f, 15 6 21 g, 17 6 23 i, 6 23 29 h, 9 21 30 d, 13 8 21 e, 9 5 14 j, 12 21 33 Project’s EF = 33 Project’s 19 CPM Example q LS and LF Times a, 6 06 b, 8 08 c, 5 05 f, 15 6 21 g, 17 i, 6 23 29 27 33 6 23 h, 9 21 30 24 33 d, 13 8 21 e, 9 5 14 j, 12 21 33 21 33 20 CPM Example q LS and LF Times a, 6 06 39 b, 8 08 08 c, 5 05 7 12 f, 15 6 21 9 24 g, 17 6 23 10 27 d, 13 8 21 8 21 e, 9 5 14 12 21 i, 6 23 29 27 33 h, 9 21 30 24 33 j, 12 21 33 21 33 21 CPM Example q f, 15 Slack 3 6 21 h, 9 9 24 3 21 30 a, 6 g, 17 24 33 6 23 i, 6 4 306 10 27 39 4 23 29 27 33 b, 8 d, 13 08 j, 12 0 08 0 8 21 0 21 33 8 21 21 33 c, 5 e, 9 05 7 7 12 7 5 14 12 21 22 CPM Example q Critical Path a, 6 f, 15 g, 17 i, 6 h, 9 b, 8 d, 13 j, 12 c, 5 e, 9 23 ...
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