65 ILCS 5/11-135.5-7
As used in this Division:
"Design-build" means a delivery system that provides responsibility within a single contract for the furnishing of architecture, engineering, land surveying, and related services as required and the labor, materials, equipment, and other construction services for the project.
"Design-build contract" means a contract for a public project under this Division between a commission and a design-build entity to furnish: architecture, engineering, land surveying, public art or interpretive exhibits, and related services, as required; and the labor, materials, equipment, and other construction services for the project.
"Design-build entity" means any individual, sole proprietorship, firm, partnership, joint venture, corporation, professional corporation, or other entity that proposes to design and construct any public project under this Division.
"Design professional" means any individual, sole proprietorship, firm, partnership, joint venture, corporation, professional corporation, or other entity that offers services under the Illinois Architecture Practice Act of 1989, the Professional Engineering Practice Act of 1989, the Structural Engineering Practice Act of 1989, or the Illinois Professional Land Surveyor Act of 1989.
"Evaluation criteria" means the requirements for the separate phases of the selection process as defined in this Division and may include the specialized experience, technical qualifications and competence, capacity to perform, past performance, experience with similar projects, assignment of personnel to the project, and other appropriate factors.
"Proposal" means the offer to enter into a design-build contract as submitted by a design-build entity in accordance with this Division.
"Request for proposal" means the document used by the commission to solicit proposals for a design-build contract.
"Scope and performance criteria" means the requirements for the commission project, including, but not limited to, the intended usage, capacity, size, scope, quality and performance standards, life-cycle costs, and other programmatic criteria that are expressed in performance-oriented and quantifiable specifications and drawings that can be reasonably inferred and are suited to allow a design-build entity to develop a proposal.
65 ILCS 5/11-135.5-7