Construction Management: Construction project delivery methods · Design-Bid-Build
How the traditional design-bid-build method works, how contracts are awarded, and where its risks and strengths lie.
Try 3 questions
1. In design-bid-build, how is the owner usually bound to the designer and the builder?
- One combined contract covering both
- Two separate contracts, one with each
- One contract with the builder, who hires the designer
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Answer: Two separate contracts, one with each
The owner hires the designer first and later contracts the builder separately, so the owner sits between two independent agreements.
2. In design-bid-build, what contract links the architect and the general contractor?
- None; each contracts only with the owner
- The contractor works under the architect's contract
- The architect is a subcontractor of the builder
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Answer: None; each contracts only with the owner
Designer and builder have no contract with each other; they interact only through the owner and the documents, which can breed an adversarial relationship.
3. Roughly how complete is the design when a design-bid-build project goes out to bid?
- Essentially complete construction documents
- About 60 percent, at design development
- About 30 percent, at schematic design
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Answer: Essentially complete construction documents
Bidders must price a fixed scope, so the drawings and specifications are finished before bidding; that is what makes a firm lump-sum price possible.
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