Parametric Slides

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Published on March 15, 2014

Author: zablankevin

Source: authorstream.com

Parametric estimating: Parametric estimating Marvin Gamboa Project Management Project Integration Management Project Scope Management Project Time Management Project Cost Management Project Quality Management Project Human Resource Management Project Communications Management Project Risk Management Project Procurement Management : Project Management Project Integration Management Project Scope Management Project Time Management Project Cost Management Project Quality Management Project Human Resource Management Project Communications Management Project Risk Management Project Procurement Management Marvin Gamboa Project Time Management: Project Time Management (Tools and Techniques) Parametric Estimating Estimate Activity Duration: Estimate Activity Duration Estimate Activity Durations is the process of approximating the number of work periods needed to complete individual activities with estimated resources. Estimating activity durations uses information on activity scope of work, required resource types, estimated resource quantities, and resource calendars. The inputs for the estimates of activity duration originate from the person or group on the project team who is most familiar with the nature of the work in the specific activity. The duration estimate is progressively elaborated, and the process considers the quality and availability of the input data. For example, as the project engineering and design work evolves, more detailed and precise data is available, and the accuracy of the duration estimates improves. Thus, the duration estimate can be assumed to be progressively more accurate and of better quality. See Figure 6-10 and Figure 6-11   Estimate Activity Durations: Estimate Activity Durations Estimate Activity Durations: Estimate Activity Durations Estimate Activity Durations What is parametric estimating?: What is parametric estimating? 3. Parametric Estimating   Parametric estimating uses a statistical relationship between historical data and other variables (e.g., square footage in construction) to calculate an estimate for activity parameters, such as cost, budget, and duration. Activity durations can be quantitatively determined by multiplying the quantity of work to be performed by labor hours per unit of work. For example, activity duration can be estimated on a design project by number of drawings multiplied by the number of labor hours per drawing, or a cable installation in meters of cable multiplied by the number of labor hours per meter. For example, if the assigned resources are capable of installing 25 meters of cable per hour, the duration required to install 1,000 meters would be 40 hours. (1,000 meters divided by 25 meters per hour).   PowerPoint Presentation:   This technique can produce higher levels of accuracy depending upon the sophistication and underlying data built into the model. Parametric time estimates can be applied to a total project or to segments of a project, in conjunction with other estimating methods. PowerPoint Presentation:   PowerPoint Presentation:     Excavation ; 1.35 cu.m / m day Back fill ; 3.87 cu.m / m day Steel Work ; 10 kg/ m day Concreting ; .91 cu.m / md PowerPoint Presentation:     Install Water Proofing Membrane ; 29 sq.m / m day Installation of Steel Window ; 17 sq.ft / m day Painting ; 100 - 300 sq.ft / md PowerPoint Presentation:     End of Presentation...

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