LEED AP Building Design and Construction (BD+C) Practice Exam

How are the IESNA lighting zones classified?

1. LZ0 to LZ4

2. LZ1 to LZ3

3. LZ0 to LZ5

4. LZ1 to LZ6

The correct answer is: LZ0 to LZ4

The correct classification of IESNA lighting zones ranges from LZ0 to LZ4. These zones are established by the Illuminating Engineering Society of North America (IESNA) to guide outdoor lighting design and to provide a framework for understanding how different levels of lighting can affect various environments. In this classification system: - **LZ0** represents areas where no outdoor lighting should be installed in order to minimize light pollution and protect dark skies. - **LZ1** applies to low-density residential areas where lighting may be necessary but should be controlled to limit glare and preserve the natural environment. - **LZ2** is for areas like residential neighborhoods and parks, allowing moderate lighting levels to enhance safety while still considering the impact on wildlife. - **LZ3** covers more urban areas where higher levels of illumination may be justified for activities but still with attention to how that light affects surrounding environments. - **LZ4** designates high-density urban zones where intense illumination is required for safety and activity but must still balance concerns for light pollution. This zoning system is vital for professionals in building design as it helps in making informed decisions to optimize lighting while being considerate of ecological and community standards. The included zone levels and their specific conditions illustrate