4-1 chapter 4 budgeting the project. 4-2 introduction 4 budgets are plans for allocating...
TRANSCRIPT
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4-1
Chapter 4
Budgeting the Project
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4-2
Introduction Budgets are plans for allocating
organizational resources to project activities.– forecasting required resources, quantities
needed, when needed, and costs
Budgets help tie project to overall organizational objectives.
Budgets can be used as tool by upper management to monitor and guide projects.
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4-3
METHODS OF BUDGETING
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Top-Down Budgeting
Based on collective judgements and experiences of top and middle managers.
Overall project cost estimated by estimating costs of major tasks
Advantages– accuracy of estimating overall budget– errors in funding small tasks need not be
individually identified
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4-5
Bottom-Up Budgeting
WBS or action plan identifies elemental tasks Those responsible for executing these tasks
estimate resource requirements Advantage
– more accurate in the detailed tasks
Disadvantage– risk of overlooking tasks
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4-6
COST ESTIMATING
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4-7
Work Element Costing Determine resource requirements and then costs
for each task– fixed costs (e.g., materials)– labor time– labor rate– equipment time– equipment rate– overhead– GS&A
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4-8
The Impact of Budget Cuts
Figure 4-1 Two project life cycles
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4-9
Activity Versus Program Budgeting Activity oriented budgets are based on
historical data accumulated through an activity-based accounting system.– expenses assigned to basic budget lines
With program budgets, each project has its own budget.– expenses by task and time period are shown
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IMPROVING COST ESTIMATES
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4-11
Learning Curves
rn nTT 1
where
Tn = the time required to complete the nth unit
T1 = the time required to complete the first unit
r = log(learning rate)/log(2)
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4-12
Tracking Signals
Used to determine if there is a systematic bias in cost or other estimates
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4-13
Other Factors
Changes in Resource Prices– increase all estimates by same percentage– estimate rate of price change individually for
inputs that have significant impact on costs
Waste and Spoilage Team Member Turnover “Mythical Man-Month” Organization Climate
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BUDGET UNCERTAINTY AND RISK MANAGEMENT
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Figure 4-4 Estimate of Project Cost: Estimate Made at Project Start
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Three Basic Causes for Change in Projects Errors made by cost estimator about how to
achieve tasks. New knowledge about the nature of the
performance goal or setting. A mandate.
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4-17
Risk Management
Risk Management Planning Risk Identification Qualitative Risk Analysis Risk Response Planning Risk Monitoring and Control
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Failure Mode and Effect Analysis (FMEA) List ways project might fail Evaluate severity (S) of each failure Estimate likelihood (L) of each failure
occurring Estimate ability to detect each failure (D) Calculate Risk Priority Number (RPN) Sort potential failures by their RPNs