Final answer:
ASHRAE Standard 90.1 has mandatory or prescriptive requirements for building end use, such as lighting, equipment efficiency, insulation, and HVAC systems.
Step-by-step explanation:
The mandatory or prescriptive requirements for building end use in ASHRAE Standard 90.1 vary depending on the building type. For example, for commercial buildings, the standard includes requirements for lighting, equipment efficiency, envelope construction, and HVAC systems. In residential buildings, it includes requirements for insulation, fenestration, and mechanical ventilation. These requirements are aimed at promoting energy efficiency and reducing the environmental impact of buildings.