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Great question.

Design-build has become synonymous with fast tracking a project. This is a false understanding of the reasoning behind design-build.

In a regular project or type of construction, there are a set of plans with all of the required engineering. This means that the total project has been conceptualized and planed, down to the fine details.

In design build project an architects concept has been drawn. Most design build projects stop here and get a permit so that the owners time tables can be met. While construction begins, engineering is continuing, and we tend to call it a design build project. All of the engineering comes latter for times sake. More of a fast track than a design build.

In a real design build project the architect's concept is there but the engineering is in question as to how the project will actually work. Most have some, if not all of the required engineering, or at least an overall concept of the engineering plan that include drawings and details. The reasoning for design build is that the engineering concepts are only that, concepts, and have not been actually proven in other than theory, or not to the scales that they are being implimented in the project. Engineering details may change with actual numbers and this is foreseen or planed.

The reason for design build is that there are expected changes or unanswered questions in the engineering that can not be fully answered until the building is to the point in construction that the engineer can make a full determination or actual measurements, loads and/or calculations.

Others may (and will) disagree, but this is my understanding of the true meaning of DESIGN-BUILD.

!

Terry

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Q: What is the difference between design build construction and construction using plans and specifications?
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