Lighting Design Criteria: Codes and Standards

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1 EXTERIOR LIGHTING

2 Lighting Design Criteria: Codes and Standards IESNA Lighting Handbook 10 th Edition RP Lighting for Exterior Environments ASHRAE/IES Standard IBC

3 Site Lighting Strategy Conceptual Light Plan Pedestrian-scale pathway lighting Punctuations of landscape accent lighting Building-mounted perimeter lighting 3

4 Lighting Narrative Day Throughout the day a balanced combination of harvested daylight and supplemental electric lighting provide the interior illumination for the Krause Gateway Center. Indirect lighting strategies provide uniform reflected ambient lighting and increase perceived brightness throughout the building. Office lighting Suspended indirect fixtures Perimeter Transom Lighting Indirect ceiling uplight fixtures Lobby lighting Suspended direct/indirect fixtures 4

5 Lighting Narrative Dusk Building-mounted luminaires uplight the projecting overhangs to create a soft glow of ambient light around the perimeter of the building and to visually emphasize the distinctive architectural planes. Calibrated fixture optics and aiming illuminate ceiling surface planes while reducing upward spill light. Antenna Narrow-beam Spotlights Office lighting Suspended indirect fixtures Perimeter Roof Lighting Narrow Beam Grazer Overhang Lighting Column-mounted Uplights Perimeter Transom Lighting Indirect ceiling uplight fixtures Timeclock and dimming control enable the exterior lighting to balance and complement the surrounding urban environment. Lobby lighting Suspended direct/indirect fixtures Level 2 Canopy Lighting Wallwash fixtures Column-mounted Uplights 5

6 Lighting Narrative Evening Once dark, the exterior lighting of the building continues to provide a soft glow of reflected light on the ground plane as the interior lighting dims. Accent lighting punctuates the uniform illumination of the overhang planes to create specific visual focal points. Timeclock and dimming control continue to balance the lighting levels of the buildings interior and exterior with the surrounding urban environment. Antenna Narrow-beam Spotlights Lobby lighting Suspended direct/indirect fixtures Perimeter Roof Lighting Narrow Beam Grazer Overhang Lighting Column-mounted Uplights Perimeter Transom Lighting Indirect ceiling uplight fixtures Level 2 Canopy Lighting Wallwash fixtures Column-mounted Uplights 6

7 Lighting Narrative Asleep During late nighttime hours, exterior building lighting levels are dimmed to achieve lower functional lighting levels to reduce energy use during off-hours. Perimeter Roof Lighting Narrow Beam Grazer Lobby lighting Suspended direct/indirect fixtures Level 2 Canopy Lighting Wallwash fixtures Column-mounted Uplights 7

8 Urban Presence Photometric studies illustrative of the distribution and intensity of light. 8

9 Low-Level Site Lighting Strategy Scale Study Site Lighting Fixture Palette Vehicular Street Lighting Sidewalk Pedestrian Lighting Low-level pedestrian-scale Pathway Lighting Landscape Accent Lighting 9

10 Facade and Structure Lighting Column-mounted Exterior Canopy Uplights Building-mounted uplights provide reflected ambient illumination around the perimeter of the building, contributing to the functional site lighting. 10

11 Landscape Accent Lighting Tree Uplights Accent lighting punctuates the landscape to creates points of focus and increase perceived brightness. Timeclock and dimming control enable luminaires to operate efficiently and during designated hours. Adjustable optics and aiming to reduce light trespass. 11

12 Pathway Lighting Wall-recessed step lights 12

13 Pathway Lighting Pedestrian Pathway Bollards 13

14 Photometric Analysis Pathway Lighting Areas include tree uplighting Photometric Study of pathway illumination achieving target 1 fc average along egress pathways and target general site illumination levels ranging from 0.2 fc 3 fc Photometric calculation does not take into consideration contributions from public street and sidewalks or tree uplighting throughout the site 14