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Design–build (or design/build, and abbreviated D–B or D/B accordingly), also known as alternative delivery, [1] is a project delivery system used in the construction industry. It is a method to deliver a project in which the design and construction services are contracted by a single entity known as the design–builder or design–build ...
Design–bid–build (or design/bid/build, and abbreviated D–B–B or D/B/B accordingly), also known as Design–tender (or "design/tender"), traditional method, or hardbid, is a project delivery method in which the agency or owner contracts with separate entities for the design and construction of a project. Design–bid–build is the ...
Design–build–finance–operate-maintain (DBFOM) [10] [11] also referred to as Design–build–finance–maintain-operate (DBFMO) [12] [13] is a project delivery method very similar to BOOT except that there is no actual ownership transfer. Moreover, the contractor assumes the risk of financing until the end of the contract period.
If speed is important, design and construction contracts can be awarded separately; bidding takes place on preliminary plans in a not-to-exceed contract instead of a single firm design-build contract. The major problem [11] with design-build contracts is an inherent conflict of interest. In a standard contract the architect works for the owner ...
With the traditional design–bid–build process, a complete set of construction documents and specifications describes what the builder agrees to build and serves as the heart of the contract. On Fast-track projects, the design, construction documents and specifications are incomplete, so setting the final cost presents problems.
In traditional construction contracts (known as design–bid–build contracts) the principal contractor is only engaged when a detailed design is complete. An invitation to tender is published and a number of contractors will price the construction of the design, from which a single winner will be chosen to complete the works. Contractors are ...
Construction – process of building or assembling infrastructure. A complex activity, large scale construction involves extensive multitasking. Normally, a job is managed by a project manager, and supervised by a construction manager, design engineer, construction engineer or project architect.
The EPC contractor coordinates all design, procurement and construction work and ensures that the whole project is completed as required and in time. They may or may not undertake actual site work. EPC companies are often used in large-scale projects, such as power plants, refineries, chemical processing facilities, infrastructure projects, and ...