Section 225 ILCS 325/47 - [Section Scheduled to be Repealed 1/1/2030] Practice of structural engineering or architecture(a) No professional engineer may practice structural engineering as defined in the Structural Engineering Practice Act of 1989 unless he or she is licensed under the provisions of that Act.(b) No professional engineer may practice architecture as defined in the Illinois Architecture Practice Act of 1989 unless he or she is licensed under the provisions of that Act.Amended by P.A. 101-0310,§ 10, eff. 8/9/2019. P.A. 91-91, eff. 1/1/2000; 92-16, eff. 6/28/2001.