Various standards and codes require that an engineer’s services are to be used for certain scaffold designs and installations. Is that really necessary? After all, thousands of scaffolds are constructed daily without any input from engineers. Furthermore, do these engineers need to be qualified engineers or will any engineer be acceptable? And even furthermore, aren’t scaffolds only to be designed by a qualified person. And even more furthermore, doesn’t the U.S. federal Occupational Safety & Health Administration, OSHA, have one regulation that requires a “registered professional engineer” and other regulation that requires a “qualified engineer?” Is there a difference? Can you be a qualified engineer without being a professional engineer and can you be a professional engineer without being qualified? The answer is yes, yes, yes and yes.