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L25 (Cost Estimation II)

L25 (Cost Estimation II) - CVEN 349 Civil Engineering...

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LECTURE # 25 Spring 2010 Dr. Ivan Damnjanovic CVEN 349: Civil Engineering CVEN 349: Civil Engineering Project Management Project Management
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Estimating Methods Estimating Methods Unit pricing Resource enumeration
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Unit Pricing Unit Pricing Once we know the unit quantity, we can calculate a total cost by: unit quantity x unit cost Unit pricing values are available in many references: RS Means Company. Building Construction Cost Data FR Walker’s The Building Estimator’s Reference Book
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What is included in Unit Cost? What is included in Unit Cost?
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Cost of resources Cost of resources Production rate of resources Production rate of resources
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Problems with Unit Cost Method Problems with Unit Cost Method Problems: Often no record of crews, cost and production rate Cost will vary over time Solution: Keep the data on men-hour or resource- hour per unit value for each item
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Resource Hour per Unit Resource Hour per Unit Resource-hours RH/Unit = Unit Cost/Unit =RH/Unit Average hourly cost per resource e
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