Primavera Duration Types

Hi all, could someone please explain with scenario/examples different duration types in P6. I am struggling to understand when to use what I.e fixed duration & units, fixed united etc. Appreciate your anticipated help, thanks

Planning, Scheduling & Programming Discussion
K
Kathy Castle 👤 Member for 8 years 1 month
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Primavera P6 duration types have affects on activity duration, resource and cost distribution when progressing the schedule. Activity durations control the critical path and the completion date of a project. You can read this article about the Primavera Duration Types

T
Tom Boyle 👤 Member for 19 years 6 months
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From P6 online help:

  1. Select the duration type:



    Choose Fixed Units/Time if you want the resource units per time to remain constant when the activity duration or units change. This type is used when an activity has fixed resources with fixed productivity output per time period. You most often choose this duration type when you are using resource dependent activities.



    Choose Fixed Duration & Units/Time if you want the activity duration to remain constant and the remaining units to change. This type is used when the activity is to be completed within a fixed time period regardless of the resources assigned. You most often choose this duration type when you are using task dependent activities.



    Choose Fixed Units if you want the activity units to remain constant when the duration or resource units per time change. This type is used when the total amount of work is fixed, and increasing the resources can decrease the activity duration. You most often choose this duration type when you are using resource dependent activities.



    Choose Fixed Duration & Units if you want the activity duration to remain constant and the units/time to change. This type is used when the activity is to be completed within a fixed time period and the total amount of work is fixed. You most often choose this duration type when you are using task dependent activities.

Note

  • The Duration Type field is disabled if the Activity Type is Start Milestone or Finish Milestone.

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