I/we now have an official definition. The Structural Engineering Certification Board has developed a definition for “structural engineer” and “structural engineering”.

“A structural engineer is a professional engineer who is competent, due to specialized eduation, expertise and experience, to engage in the practice of structural engineering. Structural engineering is the application of mathematics, materials science, and the physical principles of statics and dynamics, to the design, analysis, construction and rehabilitation of buildings, bridges, towers and other structures, and parts thereof, to make them safe and serviceable while enduring the effects of various loads.”

There is a long list of other characteristics that define a structural engineer, which I will post soon.