Using "edays" and getting a fractional return

[Scrufnut]

I'm using Project 2003 and have used "edays" many times before with no
problems. I am having to make adjustments to a project schedule a co-worker
created and I noticed where he used "edays" in a task predecessor, the head
task rolled up with a fractional number of days. All of the tasks below the
heading are whole numbers and all of the predecessors are whole numbers. I
can not figure out why the heading task rolls up to a fractional number of
days. Any ideas?

 

[Steve House]

The duration of a summary task is not the sum of the durations of its
children. Rather it is the time on the Project calendar between when the
earliest starting subtask begins and the latest finishing subtask ends.
"Edays" ignores the distinction between working time and non-working time.
Note too that Project does not really use "days" as a duration unit at all -
it uses minutes. Days get converted to minutes by the conversion factor
listed in the Calendar Options page as "Hours per Day." If you go to the
Options Settings menu, View tab, and turn on a date format that includes the
time so you can see the date and time the subtasks start and finish in the
Gantt chart entry table it may make a lot more sense what is really going on
with your specific project.

 

[Scrufnut]

Thanks for your response Julie. I had no lead or lag times. I think Steve
provided the explanation of why it occurred. Have a great day!

 

[Scrufnut]

Thanks for responding and the explanation Steve! Have a great day!

 

[JulieS]

You're welcome and thanks for the feedback.

Julie