Final answer:
b) 100-150 lux. The ANSI recommended lighting level for corridors in industrial facilities is 100-150 lux. This ensures safe navigation through these spaces, with higher levels recommended for workspaces that require more visual acuity.
Step-by-step explanation:
According to the recommendations of the American National Standards Institute (ANSI), the recommended lighting level for corridors in industrial facilities is 100-150 lux. This level of lighting is considered adequate for safe movement and orientation in these areas without requiring the visual acuity needed for tasks typically performed in workspaces.
As an illustration from a related context, the Occupational Safety and Health Administration (OSHA) recommends an illuminance of 500 lux for desktop lighting. If an office has lighting fixtures providing 300 lux from 2.50 meters above the desk, they would need to be lowered to approximately 1.22 meters to achieve the recommended 500 lux. This example demonstrates how changing the distance between the light source and the target surface can adjust the illuminance to meet specific standards.
Understanding lighting levels is essential in designing ergonomic and safe work environments. For other calculations, knowing the luminous flux, in lumens, and the distance from the light source to the surface can help determine the illuminance in lux on a given surface.