Ohio Rev. Code Ann. § 5120.16
(B) If the case of a child who is alleged to be a delinquent child is transferred for criminal prosecution to the appropriate court having jurisdiction of the offense pursuant to section 2152.12 of the Revised Code, if the child is convicted of or pleads guilty to a felony in that case, if the child is sentenced to a prison term, as defined in section 2901.01 of the Revised Code, and if the child is under eighteen years of age when delivered to the custody of the department of rehabilitation and correction, all of the following apply regarding the housing of the child: