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Design-Build
is a project delivery method based on a strong working partnership
between owner and
contractor, who work together to achieve the owner’s
goals for aesthetics, utility and cost. With this
partnership, there are no competing interests; owner and contractor
direct their energies toward the
same concept, timetable and budget.
The most important advantages
of the Design-Build system include single-point responsibility
for
managing team members across all disciplines, greater accountability
at each step, lower costs, less risk
for the owner of conflicts and difficulties, and accelerated
scheduling.
The strongest supporters
of Design-Build are owners who have participated in
numerous building
projects and have experienced this delivery option firsthand.
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Design-Build was once
used exclusively by private sector clients. Today, it
is the delivery method
of choice for many complex public projects as well.
One high-profile example is the Chicago O’Hare
Terminal 6 program, which includes a 20-gate terminal.
The City of Chicago chose the design-build
alternative after its Terminal 5 program, built using
the design-bid process, was plagued by
devastating budget overruns.
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Forty-two states now
allow design-build delivery for public sector projects.
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The Construction Industry Institute
indicates design-build projects have enabled construction
schedules to be reduced 10% on average, and for costs
to be reduced 5% to 10%, on average,
compared to design-bid-build counterparts.
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A Penn State University study
has shown that for U.S. building, industrial, and transportation
projects,
DB average costs are 4.5% and 6.0% less than design-CM
and design-bid-build, respectively.
The same study indicated that DB project completion
is 23% faster than design-CM and 33% faster
than design-bid-build.
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Design-Build was also used in the
rebuilding of the Pentagon after September 11. |
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