When studying green construction, which of the following is NOT a common category?

Structural integrity is not commonly categorized under green construction. Green construction primarily focuses on practices that enhance environmental sustainability, and the main categories directly related to this include energy conservation, water conservation, and the use of eco-friendly materials. These categories aim to minimize a building's impact on the environment, promote efficient resource use, and ensure the health and safety of occupants.

Energy conservation involves methods and technologies that reduce energy consumption, such as energy-efficient HVAC systems and improved insulation. Water conservation focuses on techniques and fixtures that reduce water use, helping to preserve this vital resource. Eco-friendly materials refer to using sustainable, recyclable, or low-impact materials in building processes to reduce harm to the environment.

While structural integrity is crucial in any building project for safety and durability, it does not directly relate to the environmental goals of green construction. Rather, it pertains more to the engineering and architectural aspects of ensuring a structure is stable and safe over time.