What is forward pass and backward pass in project management?

Forward pass is a technique to move forward through network diagram to determining project duration and finding the critical path or Free Float of the project. Whereas backward pass represents moving backward to the end result to calculate late start or to find if there is any slack in the activity.

What is a forward pass in project management?

A forward pass in project management is a technique used to move through a project network diagram. The forward pass helps you understand the project duration and calculate the early start and early finish values (meaning, the earliest day each project task can begin and wrap up).

How is forward pass calculated?

Forward Pass

  1. Early Start = Maximum (or Highest) EF value from immediate Predecessor(s)
  2. Early Finish = ES + Duration.

What is a backward pass in project management?

A backward pass in project management is a technique used to move through a project network diagram. The backward pass identifies your late start and late finish values, so that you can understand the project’s duration and eventually find the critical path.

What is backwards pass in a schedule?

A backward pass in the area of project management refers to the calculation of late finish dates and late start dates for the portions of schedule activities that have not been completed. This is determined by starting at the project’s scheduled end date and working backwards through the schedule network logic.

How do you find backward pass?

Subtract the duration from the late finish date of the last activity and add one to get the late start date. The process of calculation is known as Backward Pass and is reverse of Forward Pass.

What is EF and LF?

critical path is determined through the identification of event events connected by the activity activity with loose time zero or EF = LF to find out the most recent time in start or end (LS and LF), where ES (early start) is start time of the earliest activity, LS (late start) is start time of last activity, EF (early …

What is ES and EF for E?

Search. Search. Determine the Early Start (ES) and Early Finish (EF) of activities in a PDM network diagram. 5:37.