Rating System

LEED BD+C: New Construction, LEED BD+C: New Construction, LEED BD+C: New Construction, LEED BD+C: New Construction, LEED BD+C: Schools, LEED BD+C: Schools, LEED BD+C: Core and Shell, LEED BD+C: Core and Shell

Rating System Version

v2 - LEED 2.0, v2 - LEED 2.2, v2 - LEED 2.2, v3 - LEED 2009, v2 - Schools 2007, v3 - LEED 2009, v2 - LEED 2.0, v3 - LEED 2009

Inquiry

Our project is a 1.2 million SF science building renovation and expansion for an urban university campus. The program consists of research and teaching laboratories, lab support areas, offices, conference rooms, lecture halls, classrooms, libraries, food service, and public areas. Exterior light illumination levels have a significant impact on the overall safety of the staff and students in this building. We are requesting an interpretation of SS Cr. 8 requirements for pedestrian walkways within an urban university campus. We feel that pedestrian identification at a distance is critical for an urban campus setting. Therefore, we have used the category of Average Vertical Illuminance Levels for Special Pedestrian Security as listed in IESNA RP-33-99 Table 6: Recommended maintained Illuminance Levels for Pedestrian Ways. Using these criteria, (for walkways distant from roadways) our layout results in vertical illuminance at or below the IESNA recommendation of 0.5 foot candles. All efforts have been made to meet the SS Cr. 8 criteria. The open grassy areas between walkways are not lighted at night so the walkway lighting provides the majority of the lighting on the site. The site meets E4 zone criteria for light trespass and the design complies with SS Cr. 8 requirements. Luminaire selection meets all SS Cr. 8 LEED criteria with regard to shielding and Full Cutoff classification. We would like an interpretation of the SS Cr. 8 requirements with regard to our pedestrian walkways to confirm we can use the Average Vertical Illuminance Levels for Special Pedestrian Security category to show conformance.