| |
A
desire for a faster more seamless process led to Design – Build contracting.
In the Design – Build process the owner contracts
with a single entity that is responsible for the design
and construction of the facility. By 1996, over half
of the states allowed Design – Build to be used
in public procurement and Congress has passed specific
authorization for the use of the Design – Build
process. The process leads to lower costs, increased
construction and delivery speed, and decreased cost and
schedule growth as compared to either Design – Bid – Build
or Construction Manager at Risk methods.
|
Design-Build
vs. Design – Bid – Build |
CM@R
vs. Design – Bid – Build |
Design – Build
vs. CM@R |
Level
of Certainty |
Unit
Cost |
6.1%
lower |
1.6%
lower |
4.5%
lower |
99% |
Construction
Speed |
12%
faster |
5.8
% faster |
7%
faster |
89% |
Delivery
Speed |
33.5%
faster |
13.3%
faster |
23.5%
faster |
88% |
Source:
Selecting Project Delivery Systems, Sanvido and Konchar
|
