Schedule Level 4:

Level 4 Schedule:

L4 Schedule is the Execution Schedule, also called Project Working Level Schedule. Level 4 is the detailed working level schedule, where each schedule is an expanded part of a Level 3 schedule and is established within the integrated project schedule.

This is the key working-level CPM schedule displaying the activities to be accomplished by the project workforce and is required for every project.

The dates generated by the scheduled activities represent the anticipated start and completion of work required to complete the project.

If there is no Level 3 schedule, activities in future months/years may be summarized but still provide approximate start and completion dates for major pieces of work (this is called ‘rolling wave scheduling’). Developed by the ‘Contractor’, ‘Subcontractor’ (trade contractor), or the project team before starting work on the project execution, or work in a phase or area of the project.

The Level 4 schedule may be for the whole project or a part of the project depending on the size of the project and complexity of the work. A critical factor is keeping each Level 4 schedule to a sensible size that can be easily managed, updated, validated, etc.

Level 4 schedules may be used for major sections of the work or discrete processes such as a ‘Design Schedule’, ‘Procurement Schedule’, and/or a ‘Commissioning Schedule’.

Generally, the Level 4 schedule represents the area of authority of a section manager or engineer, so one manager is responsible for all the work in the schedule. Activities are generally over a week in duration (depending on the nature of the project) and should be resource loaded at least in the near term and include detailed crew movements and other means and methods to ensure viability.

When needed, short-term ‘look ahead’ are produced from this level; typically, Three Week Look-ahead schedules are updated every two weeks. Audiences for this type of schedule include (but are not limited to) Project Managers, Superintendents, and General Foremen.

As you can see from the above figure, Oracle Primavera P6 Group schedules activities by Level. Accordingly, you can differentiate the Schedule level by its color and/or its position in the overall schedule.