The Engineers Act lists the kinds of work that fall within the exclusive practice of an engineer. Section 2 specifies in particular:
...the foundations, framework and electrical and mechanical systems of buildings the cost of which exceeds $100,000 and of public buildings within the meaning of the Public Buildings Safety Act (chapter S-3).
In other words, only an engineer may provide consultations or opinions, make measurements, produce layouts, prepare reports, computations, designs, drawings, plans and specifications or inspect or supervise job sites with respect to the work designated in section 2 of the Act.