Ohio Revised Code Title I. State Government § 153.501

(A) A public authority may accept a subcontract awarded by a construction manager at risk, a design-build firm, or a general contracting firm, or may reject any such subcontract if the public authority determines that the bidder is not responsible.

(B) A public authority may authorize a construction manager at risk or design-build firm to utilize a design-assist firm on any public improvement project without transferring any design liability to the design-assist firm.

(C) If the construction manager at risk or design-build firm intends and is permitted by the public authority to self-perform a portion of the work to be performed, the construction manager at risk or design-build firm shall submit a sealed bid for the portion of the work prior to accepting and opening any bids for the same work.