Critical chain scheduling

Dr.Eliyahu Goldratt applied his theory of constraints(TOC) to the pratice of project mgt producing called critical chain.

Critical chain –definition

A way of thinking & pbm solving Applicable to any discipline Derived from systems theory

TOC means…….

To identify the constraints. Arrange the system to concentrate Exploit the constraints in any way.

Trick ……

1. Identify the systems’ constraints.2. Decide how to exploit the systems’

constraints.3. Subordinate everything else to the above

decision4. Elevate the systems’ constraints. If a constraint has been broken , goto step 1

TOC focusing method

To focus on increasing throughput of the total systems.

Concentrate on optimizing the pieces of a systems.

Idea

Longest path thru the N/W , both activities & resources.

Set of process & practices for PM

Critical chain

Set of dependent tasks Define the expected lower limit of projects’

possible lead time.

Critical chain of project

Used to determine the critical chain Includes

Logical hand off dependencies Resource dependencies

Dependencies