Illinois Statutes Chapter 225. Professions,Occupations and Business Operations § 325/47. Practice of structural engineering or architecture

(a) No professional engineer may practice structural engineering as defined in the Structural Engineering Practice Act of 1989  1 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  2 unless he or she is licensed under the provisions of that Act.