The following network precedence diagram lists the basic information that should be calculated in the precedence network: Begin your activity as soon as possible (ES). The end of an early activity (EF). A late start to the activity (LS). End of late activity (LF). Float for Free (FF). TF (Total Float). Calculations for the Precedence Network ES are the earliest time an activity can begin, as determined by the latest of all immediately preceding activities' early end timings.EF: the earliest time at which an activity can be completed, as calculated by EF = ES + D.LS: the latest time at which an activity can begin without delaying the completion of the project.LS = LF – D. LF: the earliest time at which an activity can be completed without delaying the completion of the project, as defined by the latest of the start times of the immediate previous activities. Network Calculations for Precedence has the greatest length of time an activity can be postponed before affecting the start of any future projects. As for TF, the maximum amount of time an operation can be postponed before affecting the project's execution. Calculations for the Precedence Network have all previously described information can be seen on the network's activity node.
