Elapsed Time tasks show as non-critical in a critical path display

G

General M

In Project 2000 and not, apparently fixed in Project 2003, a task set to
elapsed time (ie "eday" rather than "day") shows as non-critical, and with an
incorrect time on a GANTT chart set to show the critical path. Is this a
nuance of set-up that I have failed to understand, or is it a bug?
 
G

Gérard Ducouret

Hello General !
A task with elapsed duration can last during night hours.
May be such an elapsed duration task finishes at 17h000. Its (may be
critical) successor can't begin before 8:00 the day after. So the elapsed
duration task as "hidden" slack during all the night (from17:00 to 8:00)

Gérard Ducouret
 
M

Mike Glen

Hi General ,

Welcome to this Microsoft Project newsgroup :)

I think more of an anomaly that a bug :) It depends on the exact number of
minutes you choose. For example, if you have 1ed, that equates to 24
ehours. If that task has a predecessor with a normal 1d duration that
finishes at 1700hrs, then the 1ed task will start 1700hrs and finish at
1700hrs the next day, though the elapsed nature of the task is continued via
the logic link to the time the following task begins. However, the next task
cannot start until 0800hrs the following day which gives the elapsed time
task a .63eh of slack - ie not critical. If, however the first task begins
a 1.2d task at 0800, it will end at 0936, allowing the elapsed time task to
start at 0936 and finish at 0936 the next day whence the following linked
task can begin - ie zero slack and thus critical and red. It's easier to
see this by experimenting with a few tasks, showing times in the Start &
Finish columns.

FAQs, companion products and other useful Project information can be seen at
this web address: <http://www.mvps.org/project/>

Hope this helps - please let us know how you get on :))

Mike Glen
MS Project MVP
 
G

General M

Thanks Mike; as you say, an anomaly rather than a bug, but your explanation
is completely clear and a great help. I appreciate the prompt response.
 

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