ABSTRACT
This chapter describes four basic forms of project delivery: design-bid-build (DBB), design-build (DB), construction management, and integrated project delivery (IPD) - with a few important variations. The conventional form of project delivery is called DBB or the general contract method. This was the dominant form of project delivery throughout the nineteenth and twentieth centuries. DB is a procurement method in which the owner insulates itself from risk in exchange for relinquishing substantial control over the design and construction process. The restructuring of the architect's role in the 1960s and 1970s, and the acquisition of increased management training and expertise by contractors, led to the development of construction management as a separate discipline. IPD is a procurement method that tries to codify these collaborative relationships among the owner, designers, and builders in contractual form. The IPD method requires that the key parties are assembled early and commit to collaborative decision making.
