RESEARCH
26
Implementation of Six Sigma Principle in
Construction Industry
"Performance improvement, opportunities and challenges"
Eng. Ragheb Nizar Hamwi ,
Senior Manager Projects
At early 1980s, Motorola ·USL: Upper specification It is a data driven, customer
Corp was the initiator of the limit for a performance focused, and result oriented
Six Sigma concept and led standard.
Any
deviation methodology which uses
the organization successfully above this is a defect.
statistical
tools
and
through the implementation ·LSL: Lower specification limit techniques to systematically
of the Six Sigma principle. till
mid
1990s
when
the
organizations
such
as
General Electric and Black
& Decker adopted the Six
Sigma principle for economic
development.
Six Sigma is a rigorous,
focused,
and
highly
effective implementation of
proven quality principles and
techniques. Six Sigma aims for for a performance standard. eliminate
the
defects,
virtually error-free technical Any deviation below this is a decrease costs, reduce the
process. Sigma, , is a letter defect.
production
time
and
in the Greek alphabet used ·Target: Ideally, this will be inefficiencies to improve
by statisticians to measure the middle point between processes.
the variability in any process. USL and LSL.

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