Rating System

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

Rating System Version

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

Inquiry

The project site consists of an existing 2-story building undergoing major renovation, a new 5-story office tower, and a new 2-story link connecting the buildings. The property is located in an industrial zone (LZ3) of the city. The property is also within an area considered at elevated risk for crime and vandalism. The existing 2-story building is 5\' within the south property line. An adjacent building is located 5\' beyond the south property line. There are three conditions at this line where we require interpretation of light trespass requirements: 1.The easternmost 230\' of the shared boundary is a drainage swale, 10\' wide, between the buildings. The adjacent building has no windows facing this strip. The strip is not easily surveyed and our intent is to light this area so as to deter lurking. 2.The next segment of the boundary begins with an exit door from our client\'s building. The adjacent property has a security fence at this segment of the property line. This adds an outdoor portion to the path of egress that requires those exiting to travel 70\' west from the exit door until they clear the fence and reach a public way. Our intent is to meet path of egress lighting requirements for this segment. 3.The westernmost segment is a 100\' wide parking lot on the adjacent site. This lot belongs to the adjacent building owner and is leased by our client. This area has not been included in calculations for any other LEED credits. As the lot is not fully lit by the owner, our client seeks to continue their current practice of lighting the northern portion of the lot from their building. The existing lighting for the areas in question consists of seven HID cutoff fixtures equally spaced along the building at heights between 15\' and 25\'. We intend to replace all existing fixtures with 70 watt metal halide full cutoff fixtures. The fixtures will be on a photocell control to minimize usage. The new fixtures will have a wall grazing distribution to keep footcandle levels at the property line down to 3.3 fc maximum. The average is 1.59 fc along the property line between the buildings. Please provide guidance as to whether our lighting strategy will satisfy the intent of the credit in the context of the close property line proximity plus the egress and security lighting requirements. Also please clarify if the practice of lighting the leased parking lot on the neighboring property is acceptable. Aside from the above issues, the lighting of the lot would conform to the credit requirements.