Definition - What does Design-Build (D-B) mean?
Design-build is a form of project delivery in which the owner contracts with a single entity for both design and construction. It is used in the building industry, including trenchless construction, to simplify the project and provide other advantages.
This type of project delivery is also called master builder.
Trenchlesspedia explains Design-Build (D-B)
Design-build involves single-source responsibility for every aspect of a construction process. The owner has a single point of contact and does not have to act as a middleman between design and build organizations. Traditional construction project delivery is a more complicated process. The owner of the project works with both the designer and the construction contractor, and each of these work with sub-consultants or sub-contractors.
According to the Design-Build Institute of America (DBIA), design-build offers several advantages over the traditional method. The delivery speed, construction speed, cost and schedule growth, and unit cost are all significantly better with design-build. Trenchless construction project benefit from design-build when they are able to leverage these potential advantages.