CSTM test - Estimating Activity durations

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Author:
Anonymous
ID:
247769
Filename:
CSTM test - Estimating Activity durations
Updated:
2013-11-19 01:39:48
Tags:
cstm
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Description:
activity durations
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  1. Why estimate activity durations
    Key to controlling day-to-day construction and production monitoring
  2. Four pertinent resources for estimating activity durations
    • 1.  labor
    • 2.  equipment
    • 3.  material
    • 4.  subcontractors
  3. Quantity and productivity data sources
    • 1. quantity takeoff
    • 2.  bid estimate
    • 3.  outside info
    • 4.  estimating guides
    • 5.  industry and trade organizations
    • 6.  manufacturers
    • 7.  specialty contractors
  4. Calculating durations

    Activity duration = ....
    Work quantity / production rate

    ex  500cy/(50cy/day) = 10 days
  5. Info necessary to estimate activity durations
    • - quantity of work
    • - production rate
    • - productivity
    • - crew mix
    • - work schedule
    • - project calendar
  6. Productivity factor, 2 options
    Actual / budget >> less than 1 is good

    Budget/actual >> more than 1 is good

    THIS CLASS: less than 1 is good

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