Before to prepare a workschedule, it is important to understand the Primavera P6 Calendars tools. The calendar must represent the site conditions, weather conditions, non-work days, public holidays etc. Working days and daily working hours are defined in P6 default calendars. It is possible to change this default calendar to another suitable one for the project, such as a 10-hour per day, 6-day work week calendar.
This article shows how to create a default 10-hour per day, 6-day work week with holidays calendar in Primavera P6.
Primavera P6 Calendars : Creating a New Calendar
We will select Enterprise | Calendars from the main top drop down menu, Figure 1.
In the “Calendars” window, we will select the + Add button, Figure 2.
Now we will copy a default calendar of P6 and modify it. “In the Select Calendar to Copy From” window we will select the 7 Days 10 Hours calendar, Figure 3.
We will type the name of our calendar as 6×10, Figure 4.
We will select “Modify” and open the “Global Calendar: 6×10” window , Figure 5.
Make sure that “Total work hours/day” option is marked.
We will select “Workweek” in order to mark the nonwork days. Let’ s assume that Sundays are the nonwork days. We will type “0” work hour for Sunday, Figure 6.
We will have a 6-day work week calendar,Figure 7.
Now we will mark the holidays. Let’ s assume that December 13th, January 20th and April 7th is holiday in our project. We will highlight them and select the “Nonwork” button, Figure 8.
Make sure that the Hours/Day cell is set to 10.0 to match our 6-day 10-hrs/day work week, Figure 9.
If we leave it as 8-hrs/day then Primavera P6 will consider each 8-hour period of our 10-hour day as one day for the Original Duration calculation. This means, if it remains 8-hrs/day and we insert an activity original duration 3 days, it will calculate 3×8 = 24 hours. Then if we change 8-hrs/day to 10-hrs/day, original duration of the activity will be 24/10 = 2 days. So it is important to set the working hours before to insert activities.
Set Default Calendar
Now we will set our newly created 6×10 work week calendar to the default. We will select Enterprise | Projects from the main top drop down menu and select our newly created 6×10 work week calendar , Figure 10.
It is possible to create several calendars in P6. Working hours, non work days and holidays can easily be defined. Different working types can use different calendars. For example, site calendar may be 10-hour per day, 6-day work week calendar, office calendar may be 8-hour per day, 5-day work week calendar. Creating and assigning a calendar in Primavera P6 is an important process. Because the assigned calendar must represent the real conditions of the project.