Background

Most often, a project network diagram is depicted as a chart with a series of boxes and arrows.

This network diagram tool is used to map out the schedule and work sequence for the project,

as well as track its progress through each stage up to and including completion. A project

network diagram is used to develop and document the sequence of activities. It belongs to the

'project schedule management' knowledge area where it is served as an input for other

scheduling techniques, such as the schedule network analysis or the critical path method.

In a project, you can also use this type of diagram to discuss sequences and dependencies, as

well as for the stakeholder communication. In larger projects, however, it is often a rather

detailed and complex working document that links the dependencies and sequences of all

activities to the overall project schedule and duration. For the communication of the project

schedule, other ways of presentation (such as Gantt diagrams) and a more aggregated view tend

to be more common than schedule network documents in many organizations.

Question#1: A work project consists of twelve activities labeled A through L. Upon being asked

to specify the order in which the jobs had to be done, the managers answered as follows:

Page 2 of 2

A, B and C are the first activities of the project and can start simultaneously and immediately; A

and B precede D while B precedes E, F and H. Activities F and C precede G while E and H

precede I and J. C, D, F and J precede K which in turn, precedes L. Further I, G and L are the

terminal activities of the project. The completion times of the various activities are listed here:

Part-1: Draw a NETWORK DIAGRAM corresponding to this project.

Part-2: Obtain the lengths of all the paths and determine CRITICAL PATH by any method.

Question#2: Compute the critical path of the following plan:

Part-1: Draw a NETWORK DIAGRAM corresponding to this project.

Part-2: Obtain the lengths of all the paths and determine CRITICAL PATH by any method.