2.1. This Act shall have effect only for the application of the following provisions:(1) section 16 of the Architects Act (chapter A-21);
(2) sections 69 and 71 of the Act to secure the handicapped in the exercise of their rights (chapter E-20.1);
(3) section 2 of the Engineers Act (chapter I-9);
(4) subparagraph 10 of paragraph 42 of section 336 of the Charter of the City of Québec (1929, chapter 95).