1. Any person practices in Missouri as a professional engineer who renders or offers to render or holds himself or herself out as willing or able to render any service or creative work, the adequate performance of which requires engineering education, training, and experience in the application of special knowledge of the mathematical, physical, and engineering sciences to such services or creative work as consultation, investigation, evaluation, planning and design of engineering works and systems, teaching of advanced engineering subjects or courses related thereto, design surveys and studies, the design coordination of services furnished by engineers and other consultants as they relate to engineering work, construction observation and the inspection of construction for the purpose of compliance with drawings and specifications, any of which embraces such service or work either public or private, in connection with any utilities, structures, buildings, machines, equipment, processes, work systems or projects and including such architectural work as is incidental to the practice of engineering; or who uses the title “professional engineer” or “consulting engineer” or the word “engineer” alone or preceded by any word indicating or implying that such person is or holds himself or herself out to be a professional engineer, or who shall use any word or words, letters, figures, degrees, titles or other description indicating or implying that such person is a professional engineer or is willing or able to practice engineering.

2. Professional engineers shall be in responsible charge of all engineering design of buildings, structures, products, machines, processes, and systems that can affect the health, safety, and welfare of the public within their scope of practice.

3. Notwithstanding any provision of subsection 1 of this section, any person using the word “engineer”, “engineers”, or “engineering”, alone or preceded by any word, or in combination with any words, may do so without being subject to disciplinary action by the board so long as such use is reflective of that person’s profession or vocation and is clearly not indicating or implying that such person is holding himself or herself out as being a professional engineer or is willing or able to practice engineering as defined in this section.