When using multiple resources, the Duration calculation appears to be off.
As an example, I will create a task for 10d (80hrs), and add two resources
(one full-time and one part-time), at 75% each (9hrs/day combined). I would
assume the Duration would calculate to 8.88d(80hrs/9hrs) and an End Date of
4/20/06 (if started on 4/10/06), but it instead calculates to 9.92d. Not
only that, but the End Date is calculated to 4/28/06 (which is 15 business
days long). What am I missing?

In article <44725742-BE08-4A20-887B-74AED9CD45F8@microsoft.com>,
bgane@goldleaf.com <bganegoldleafcom@discussions.microsoft.com> wrote:

> When using multiple resources, the Duration calculation appears to be off.
> As an example, I will create a task for 10d (80hrs), and add two resources
> (one full-time and one part-time), at 75% each (9hrs/day combined). I would
> assume the Duration would calculate to 8.88d(80hrs/9hrs) and an End Date of
> 4/20/06 (if started on 4/10/06), but it instead calculates to 9.92d. Not
> only that, but the End Date is calculated to 4/28/06 (which is 15 business
> days long). What am I missing?

bgone,
There must be more to your story because something doesn't make sense.
First of all, one full-time and one part-time resource doesn't equate to
75% each (at least from my viewpoint), and/or an assignment level of 75%
each does not equate to 9 hours a day combined (I get 12 hours/day
combined).

I think we need some clarification before we can help.

John
Project MVP

I'll try to reword. I have one full-time resource (8hrs/day). That resource
can only spend 75% of their time on the task (6hrs/day). I have another
resource, which is a part-time resource (4hrs/day). That resource also can
only spend 75% of their time on the task (3hrs/day). The 6hrs + 3hrs is
where I was getting the 9hrs (or (8+4)*.75%). Hope that makes more sense.

"John" wrote:

> In article <44725742-BE08-4A20-887B-74AED9CD45F8@microsoft.com>,
> bgane@goldleaf.com <bganegoldleafcom@discussions.microsoft.com> wrote:
>
> > When using multiple resources, the Duration calculation appears to be off.
> > As an example, I will create a task for 10d (80hrs), and add two resources
> > (one full-time and one part-time), at 75% each (9hrs/day combined). I would
> > assume the Duration would calculate to 8.88d(80hrs/9hrs) and an End Date of
> > 4/20/06 (if started on 4/10/06), but it instead calculates to 9.92d. Not
> > only that, but the End Date is calculated to 4/28/06 (which is 15 business
> > days long). What am I missing?
>
> bgone,
> There must be more to your story because something doesn't make sense.
> First of all, one full-time and one part-time resource doesn't equate to
> 75% each (at least from my viewpoint), and/or an assignment level of 75%
> each does not equate to 9 hours a day combined (I get 12 hours/day
> combined).
>
> I think we need some clarification before we can help.
>
> John
> Project MVP
>

See also my response to your other post. Are you assigning both of these
resources in one fell swoop or are assigning first the one resource to the
task and then in a second assignment operation adding the second one to it?
Also, what does the calendar look like for the part-time resource? How have
you shown he is part-time?
--
Steve House [MVP]
MS Project Trainer & Consultant
Visit http://www.mvps.org/project/faqs.htm for the FAQs

"bgane@goldleaf.com" <bganegoldleafcom@discussions.microsoft.com> wrote in
message news:EBA8C208-C818-4B70-A8EF-60D69D653746@microsoft.com...
> I'll try to reword. I have one full-time resource (8hrs/day). That
> resource
> can only spend 75% of their time on the task (6hrs/day). I have another
> resource, which is a part-time resource (4hrs/day). That resource also
> can
> only spend 75% of their time on the task (3hrs/day). The 6hrs + 3hrs is
> where I was getting the 9hrs (or (8+4)*.75%). Hope that makes more sense.
>
> "John" wrote:
>
>> In article <44725742-BE08-4A20-887B-74AED9CD45F8@microsoft.com>,
>> bgane@goldleaf.com <bganegoldleafcom@discussions.microsoft.com> wrote:
>>
>> > When using multiple resources, the Duration calculation appears to be
>> > off.
>> > As an example, I will create a task for 10d (80hrs), and add two
>> > resources
>> > (one full-time and one part-time), at 75% each (9hrs/day combined). I
>> > would
>> > assume the Duration would calculate to 8.88d(80hrs/9hrs) and an End
>> > Date of
>> > 4/20/06 (if started on 4/10/06), but it instead calculates to 9.92d.
>> > Not
>> > only that, but the End Date is calculated to 4/28/06 (which is 15
>> > business
>> > days long). What am I missing?
>>
>> bgone,
>> There must be more to your story because something doesn't make sense.
>> First of all, one full-time and one part-time resource doesn't equate to
>> 75% each (at least from my viewpoint), and/or an assignment level of 75%
>> each does not equate to 9 hours a day combined (I get 12 hours/day
>> combined).
>>
>> I think we need some clarification before we can help.
>>
>> John
>> Project MVP
>>

In article <EBA8C208-C818-4B70-A8EF-60D69D653746@microsoft.com>,
bgane@goldleaf.com <bganegoldleafcom@discussions.microsoft.com> wrote:

> I'll try to reword. I have one full-time resource (8hrs/day). That resource
> can only spend 75% of their time on the task (6hrs/day). I have another
> resource, which is a part-time resource (4hrs/day). That resource also can
> only spend 75% of their time on the task (3hrs/day). The 6hrs + 3hrs is
> where I was getting the 9hrs (or (8+4)*.75%). Hope that makes more sense.

bgane,
Yes, that makes more sense but more questions remain (see Steve's
response). When I did a little test using two resources assigned as you
indicate on a single 10 day task, I get different results depending on
how the calendar is set up for each resource. In no case do I get any of
the values you mentioned in your original post. We need more info.

John
Project MVP
>
> "John" wrote:
>
> > In article <44725742-BE08-4A20-887B-74AED9CD45F8@microsoft.com>,
> > bgane@goldleaf.com <bganegoldleafcom@discussions.microsoft.com> wrote:
> >
> > > When using multiple resources, the Duration calculation appears to be
> > > off.
> > > As an example, I will create a task for 10d (80hrs), and add two
> > > resources
> > > (one full-time and one part-time), at 75% each (9hrs/day combined). I
> > > would
> > > assume the Duration would calculate to 8.88d(80hrs/9hrs) and an End Date
> > > of
> > > 4/20/06 (if started on 4/10/06), but it instead calculates to 9.92d. Not
> > > only that, but the End Date is calculated to 4/28/06 (which is 15
> > > business
> > > days long). What am I missing?
> >
> > bgone,
> > There must be more to your story because something doesn't make sense.
> > First of all, one full-time and one part-time resource doesn't equate to
> > 75% each (at least from my viewpoint), and/or an assignment level of 75%
> > each does not equate to 9 hours a day combined (I get 12 hours/day
> > combined).
> >
> > I think we need some clarification before we can help.
> >
> > John
> > Project MVP
> >