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No Nonsense Guide to Duration Types in P6
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No Nonsense Guide to Duration Types in P6

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Simple guide to Duration Types in Primavera P6

Simple guide to Duration Types in Primavera P6

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  • 1. No Nonsense Guide to Understanding Duration Types ©Focus Planning Ltd
  • 2. Disclaimer Information contained within this presentation is for education purposes only. How a programme or schedule is built, maintained and managed is the responsibility of the owning organisation. Focus Planning Ltd accepted no responsibility for changes made to programmes or schedules which are altered as a result of reading slides contained within this presentation. The configuration and settings of computer software are the responsibility of the license holders and Focus Planning Ltd accept no liability for the configuration used by the license holder.
  • 3. Fixed Units/Time This means the following is in effect; • Changing the budgeted unit’s field in the activity details window changes the duration according to the remaining units/time. • (As above) Duration = Budgeted Units divided by Remaining Units/Time • Changing the duration updates the Budgeted Units • Updating the Actual Units This Period or Actual Units column changes the remaining duration in accordance with the Remaining Units/Time rate This is best used for when measurable tasks duration is not fixed and the output is constant over the duration of the task without there being a production limit. For example - a factory line produces 10 units per day and will continue to until it is stopped. So with duration of 10 days they will produce 100 units, change that to 20 days and they will produce 200 units. Change the budget units back to 100 and the duration drops down to 10 days. ©Focus Planning Ltd 3
  • 4. Fixed Duration & Units This means the following is in effect; • Changing the budgeted unit’s field in the activity details window does not change the duration. • Changing the budgeted units does change the remaining units / time • Changing the duration does change the remaining units / time • Updating the actual units this period or actual total units does change the remaining units / time • Updating the % complete or moving the data date does change This is best used for when a measurable task must be done in a set number of days. For example 10 days to build 100 units. With this example P6 would decide that you must produce 10 units per day with the activity not started. Now let’s say the activity is a day in and only 1 units was build, this means the 9 units which were not built are now spread over the remaining 9 days, meaning you must now produce 11 units per day for the remaining 9 days. P6 will not extend the duration by a day to allow for the 9 missing units to be built. ©Focus Planning Ltd 4
  • 5. Fixed Units This means the following is in effect; • Changing the budgeted units field in the activity details window does change the duration • Changing the remaining units/time does change the duration • Changing the duration does change the units/time This is best used when a task has a specific output and the duration or output per day is variable. For example the site needs to demolish 100 units, but there is no specific deadline to do so. This means P6 will dictate the amount of units to demolish per day according to duration and vise versa. This is essentially the example of the production line with a never ending total units with the excepted that fixed units limits the production - so whilst the duration and units/time will change the target total units is set and once achieved the activity is completed. ©Focus Planning Ltd 5
  • 6. Fixed Duration & Units/Time This means the following is in effect; • Changing the Duration changes the budgeted units according to the units/time • Changing the units/time changes the budgeted units • Changing the units/time does not change the duration This is best used when the total production is decided by the duration of the activity and the daily production. For example a production line knows it can produce so many units a day for so many days and this decides the total units produced. This would be used when the total output required is unknown and is decided by how much can be produced in a day and over how many days. ©Focus Planning Ltd 6