The NETWORK DIAGRAM which has evolved from the PERT Chart is a diagrammatic view of the tasks where the position of the task and the lines linking them together represent the detailed steps that comprise the project.
The Network Diagram view displays tasks and task dependencies in a network or flowchart format.
Heuristics – rules of thumb Near Critical Path – Path is close in duration to critical path, the close it is the more RISK project has.
Sub Network templates are useful when project has several identical or nearly identical deliverables.
Fragment Network – Portions of project schedule network diagram are often referred to as a Sub network or Fragment Network.
Should be created at the beginning of the project and used during the project to gauge (measure) overall project performance, not just schedule.
Can also be used to assess feasibility of schedule under adverse conditions (e,g., when a schedule constraint is identified) Time Estimate – Non-Calendar Schedule – Calendar Based Output Schedule development Project network diagrams Project network diagrams are schematic displays of the project’s activities and the logical relationships (dependencies) among them. Any approved change should be documented in writing.
Provides the ability to compute the probability of completing a project on a specific day. Schedule development: Schedule Baseline – the original, approved project schedule; should never be changed without approved Change request.
Also, the Look-Ahead Report should be marked up by the contractor and given to the resident engineer at least three work days prior to the progress update meeting so that it can be reviewed and verified.
A box (sometimes called a node) represents each task, and a line connecting two boxes represents the dependency between the two tasks.
It is possible to create a new project in the Network diagram or modify an existing project by adding and linking tasks.
The VA requires the use of the Network Analysis System-CPM (Critical Path Method) on all major projects and / or other VA projects where the best interest of the Government will be served by its use.
It is intended to: The network diagram is utilized to describe as a standard activity-on-node network of events and is generally developed using the technique set forth in the current AGC publication CPM in Construction - A Manual for General Contractors.