The CM at Risk10 project delivery structure involves a separate contract for a construction manager and a design contractor during the initial phase of the project. The construction manager negotiates a D/B contract with the project sponsor during this initial phase as the design work progresses. The potential benefits of this approach include advancement of the project during price negotiations and the potential for more optimal teaming among the members of the private consortium.
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10 See description given by the American Institute of Architects, available at http://www.aia.org/adv_st_constructionmanageratrisk .