Setting Lag based on Calandar days

[Rich]

I am trying to set the start date of certain tasks is my project as
two calandar days since the task previous was finished. This is to
allow me two days for material delivery. I have been setting the
presecessor for task 4 as 3FD+2 days. This works fine if the person
completing the job is an 8 hour employee. However when I assign task
4 which takes 2 hours to a specialty employee that only works 3 hours
a day the 2 day lag seems to push the start day out 16 hours of this
guys work day or 5 or so days.. How can I set the lag based on
calandar days or based on a differnt schedule then the person that is
doing the work? I guess I could set up a milestone or a really short
task to take delivery of materials and force that task to use the 8
hour a day calandar instead of the workers calandar but I was trying
to cut down the numnber of tasks since the delivery of material is
really almost a zero minute event.

 

[Mike Glen]

Hi Rich,

Welcome to this Microsoft Project newsgroup

You could make the lag "2 edays" as elapsed time.

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

 

[John]

Rich,
There are multiple scenarios that could be occurring with the specialty
employee's schedule that are affecting the lag that you see. For
example, does the guy work the first three hours in a day, 3 hours in
the middle or 3 hours toward the end of the day? Lag time in the
Predecessor field IS based on the Project calendar, not on any resource
calendar. Based on the lag and his work time, the effective delay can be
various values.

If you want a calendar lag simply use 4FS+2ed. That will give "elapsed
days" but you still might get some strange results for the same reason
as above.

For your reference a Milestone is generally set for a "zero minute"
event and it is one way to set up a defined time for delivery of
material.

Hope this helps.
John

 

[Rich]

Thanks.. This helps a lot. I will have to look at the project
calandar. To be honest I am not sure what calandar the project is
using. I only know what calandar each of my resources is using.


The 3 hour employee is me. The project is the rehab of my house. I
work on my house from 5pm to 9pm and contractors work from 9 to 4pm(if
I am lucky). For certain key materials I need a buffer for delivery
after the previous stage is done. I noticed the lag jumped further if
I was set to run the task. I think as mentioned here I should maybe
set a milestone which uses the contractor calandar(Monday-Friday only)
since I need two work days to schedule delivery of things like drywall
etc.

Between checking the project calandar and using 2ed I am sure I will
be able to get this fixed.. Thanks a lot..