Multiple Calendar Scheduling

Hi Sophia,

I may suggest that you try to change your default calendar to 24/7 and hours per timeperiod settings corresponding to 24/7 calendar as well, and see what will happen.

Use resource calendars and set all your activities to resource dependent.

No constraints; and FS only (as much as possible).

oh, don’t forget to show the time/minutes when running your schedule.

Best regards

All,
I know everyone is confused how Primavera calendar works. To resolve your confusion I will explain how.
Primavera calculates calendar duration using this formula.
1)     For summary band duration = Default calendar number of days settings using hour per time period number of hours per day and between the time settings on the calendar as limit of working hours.
Ex: Default Calendar = Mon – Fri = 8hrs/day from 8:00AM to 4:00PM
Say: 2 activities having 5 days each using same calendar settings.
Say: start = 01-Mar-10
If hour per time period is set 10hr
Duration = 80hrs/10hr = 8 days
date display = 01-Mar-10 8:00AM – 12 Mar-10 Fri 4:00PM

2)     For Activity duration = Activity calendar number of days using hours per time period number of hours per day.
Using same calendar as in example 1
Say 1 activity 5 days Mon – Fri = 8hrs/day from 8:00AM to 4:00PM
If hour per time period is set 6hr
Duration = 40hrs/6 = 6.67
date display = 01-Mar-10 8:00AM – 05 Mar-10 4:00PM

3)     For resources depends on the Activity Type settings
If Activity Type = Task dependent – resource will use activity calendar
Ex: will same as number 2.

If Activity Type = Resource dependent – Activity duration will use activity calendar and resource will use resource calendar including display date:
Ex: Activity calendar = Mon – Fri = 8hrs/day from 8:00AM to 4:00PM
Resource calendar = Mon – Sat = 8hrs/day from 8:00AM to 4:00PM
If hour per time period is set to 8hr
Duration = 40hrs/8 = 5 days (using activity calendar/ hours per unit)
Date display = 01-Mar-10 8:00AM – 06-Mar-10 4:00PM (Using resource calendar / hour per time period) budget = 48, unit/time = 8

For those using Multiple calendars I recommend to use default calendar set to normal average working hour. (if staff = 8hr/5day and workers 8hr/6day = 8hr/6day as default).

For shifting hours using 16hrs/day or 24hrs/day is a bad approach. If you used this it will give you wrong duration especially if mixed to 8hrs working day. For 16hr/day or 24hr/day over-all maybe acceptable but need to set hour per time period the same as calendar settings otherwise it will have a wrong durations.
Ex: Activity calendar = mixed 8hrs/day and 16hrs/day
Hours per Time Period = 8hrs

Duration for 5 days for 8hrs = 40/8 = 5days (using activity calendar/ hour per time unit)
date display = 01-Mar-10 8:00AM – 05 Mar-10 4:00PM

Duration for 5 days for 16hrs = 40/8 days (5 days/ hour per time unit)
Display = 01-Mar-10 8:00AM – 03-Mar-10 4:00PM (40hrs/16hrs)

If shifting hours is required the best way to deal this is using resource calendar define on each shift having 8hrs default calendar and 8hr hour per time period
Ex: 1st shift labor = resource calendar = 8hr/day = 8:00AM – 4:00PM
2nd shift labor = resource calendar = 8hr/day = 4:00PM – 12:AM
Activity Type = Resource Dependent
Activity Calendar = Mon – Fri = 8hrs/day from 8:00AM to 4:00PM

For five day duration using 8hr Hour per time period
Duration = 40/5 = 5days
Display activity = 01-Mar-10 8:00AM – 06-Mar-10 12:AM
Display 1st shift Planned date = 01-Mar-10 8:00AM – 05-Mar-10 4:00PM = 40unit
Display 2nd shift Planned date = 01-Mar-10 4:00PM – 06-Mar-10 12:00PM = 40unit

Hope this clear the confusion.