Time Intervals in Relationships (SAP Library

Time Intervals in Relationships

The time interval is the time between two operations which are connected by a relationship.

The operation "Install piece of equipment" is connected to the operation "Repair piece of equipment" in a FS relationship with a time interval of two days. This means that - at the earliest - the operation "Install piece of equipment" can begin two days after the operation "Repair piece of equipment" has been completed.

You can specify time intervals between connected operations in two ways:

With positive or negative absolute values

You enter an absolute value, for example -10 days. In a FS relationship, this means that the successor operation can begin 10 days before the predecessor operation is finished.

As a percentage of the duration of the predecessor or successor

You enter a percentage, for example 80%. In a FS relationship, when the predecessor "Repair" has a duration of 10 days, the following operation "Install piece of equipment" begins 8 days (= 80% of 10 days) after the operation "Repair" was finished.

For a detailed description of relationships, see the documentation PS Project System.