Final answer:
For scaffold systems exceeding 125' in height, a structural engineer is responsible for designing the system to ensure safety and compliance with regulations.
Step-by-step explanation:
Once you surpass 125' of scaffold height above the base plates, the system will be designed by a structural engineer. Scaffold systems exceeding this height can be complex and pose significant risk if not properly designed, necessitating the involvement of professionals who are equipped with the necessary knowledge and skills to ensure structural integrity and safety. Structural engineers have the expertise to analyze and design frameworks that will safely carry the intended loads and comply with safety regulations.