Creating and Assigning Primavera P6 Calendars

Primavera P6 Calendars
Primavera P6 Calendars

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.

Primavera P6 Figure 1
Primavera P6 Calendars Figure 1

In the “Calendars” window, we will select the + Add button, Figure 2.

Primavera P6 Calendars Figure 2
Primavera P6 Calendars 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.

Primavera P6 Calendars Figure 3
Primavera P6 Calendars Figure 3

We will type the name of our calendar as 6×10, Figure 4.

Primavera P6 Calendars Figure 4
Primavera P6 Calendars 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.

Primavera P6 Calendars Figure 5
Primavera P6 Calendars Figure 5

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.

Primavera P6 Calendars Figure 6
Primavera P6 Calendars Figure 6

We will have a 6-day work week calendar,Figure 7.

Primavera P6 Calendars Figure 7
Primavera P6 Calendars Figure 7

Holidays
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.

Primavera P6 Calendars Figure 8
Primavera P6 Calendars Figure 8

Time Periods
Make sure that the Hours/Day cell is set to 10.0 to match our 6-day 10-hrs/day work week, Figure 9.

Primavera P6 Calendars Figure 9
Primavera P6 Calendars 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.

Primavera P6 Calendars Figure 10
Primavera P6 Calendars Figure 10

Summary



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.

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