Calculation of the Dates

General

The results of scheduling include:

• earliest start-/ end dates , latest start-/ end dates and calculated start-/ end dates on project level

• earliest start-/ end dates , latest start-/ end dates and calculated start-/ end dates on task level

• and, if resources are already planned, calculated start/ end dates of the assigned resources as well as their loading and capacity adjustment.

Calculation of Start Dates

Information

• The network theory and the practical approach are available for determining the start of a task successor.

Network plan theoretical approach The successor starts on the day on which the predecessor ends.

Practical approach The successor does not start before the next day.

• in PLANTA project

  • tasks with duration > 0 and EA relation are planned according to the practical approach, i.e. The successor starts on the following working day

  • tasks with duration = 0 (e.g. milestones) and EA relation are planned in the following way:

    • If the duration of a task = 0, you can define via the Successor task start +1 day model parameter when its successor is supposed to start.

    • If the successor of a task has a duration of = 0, the successor always starts on the same day as the task itself.

Details

• Requested and actual dates on non-working days (vacation, absence) remain valid and are taken into account during the calculation of the calculated dates. Start and end dates can thus also be scheduled on non-working days. However, the duration of a task is displayed in working days regardless. The resources are only loaded on working days.

Example

• The TA Requested start of task A falls on Sunday, 11/10/2019, a non-working day. The start of task A is scheduled for the Requested start date.

• Task B has no requested date, it therefore starts on the next working day.

• Resource Ronja Koch is on vacation from 11/11/2019 to 11/15/2019. It is not planned within the vacation period.