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fractional day durations

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Fractional day durations

ResolvedVersion 2007

Hal has attended:
Project Intro Intermediate course

Fractional day durations

When I set up a project and allocate resources I sometimes find that the duration changes and I'm left with durations with fractions of a day.

When it happens I have total days in sub tasks but the summary task shows fractions. i.e. if I allocate 20, 45, 120, days etc. to sub tasks the summary task will show 185.36 or similar.

What causes this? Is it possible to suppress it?

RE: Fractional day durations

One of two things will cause this effect:

1. There is a mismatch between the default calendar settings in Tools|Options|Calendar and the settings in Tools|Change Working Time.

2. The summary task is set to calculate the total duration between the start time of the earliest subtask and the finish time of the latest subtask. If the any of the tasks durations are in hours, this is where the fractions come from.

The first is resolvable - the default calendar settings must be for a working day which is LONGER than the Change Working Time calendar. However, this would mean copying all tasks in the project and pasting into a new project file with the new default settings.

The second is not resolvable and cannot be suppressed.

Good luck!

RE: Fractional day durations

Thank you Alan, I suspected it may be a calendar mismatch, but did not know where exactly.

RE: Fractional day durations

There might be Missing Link to the successor.

RE: Fractional day durations

There might be a missing link to hte successor.

rajkumar

MS Project tip:

Keep constraining dates to a minimum

As far as possible avoid fixing the dates of your tasks. For example try to steer of clear dragging task bars in the Gantt chart to move them on the timeline or entering dates directly into the Start / Finish fields.

Date constraints such as these limit Microsoft Project's ability to automatically adjust your project whenever you add, remove or modify the duration of your tasks. Instead use the logic in your task dependencies that link your tasks to enable Project to calculate the start and finish dates for you.

View all MS Project hints and tips

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