Task Types --is this right?

[robo]

Microsoft says the formula is:

Duration = Work / Units

I also see this one being used and personally I like it better.

Duration * Units = Work

Does it matter which one I use or show people to use?

Thanks

 

[JulieS]

Hi Robo,

The two formulas are actually mathematically the same. I think the reason
you frequently see it presented in the two manners is due to explanations
about effort-driven scheduling and task type.

The second formula (Duration * Units = Work) is usually used to explain that
Project calculates work when the first resource is assigned to the task based
upon the task duration and the assignment units.

The first formula (Duration = Work/Units) is usually used to explain the
effect of effort-driven scheduling when you add additional resources to an
effort-driven, fixed units task. Duration is *recalculated* based upon the
originally calculated work value divided by the new total number of resource
units.

Hope this helps. Let us know how you get along.

Julie

 

[Mike Glen]

Hi Robo,

Welcome to this Microsoft Project newsgroup

I prefer "Units*Duration = Work" as most people understand the concept "men
* hours = manhours"

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

 

[robo]

Thank you very much to both of you. I'm not an MVP but I teach Project and
also agree that students find this formula easier to understand. I just
really need to make sure I wasn't giving them bad information.

Thank again for the quick replies.

 

[Mike Glen]

You're welcome, Robo

Mike Glen
MS Project MVP