The trellis lines the east wall of the independence visitor center. It has brick columns with a white painted wooden trellis that is covered in ivy. The trellis is built on top of a brick walkway. The walkway leads from Market Street, where the main entrance is, along the east side of the building where there is another entrance. There is also access to this trellis walkway from the east walking toward the building. The times it maybe used in which it would need lighting are in the winter when it gets dark earlier and for special events that take place at the Independence Visitor Center later at night. The lighting of the trellis will be seen however by pedestrians walking on two main roads of Market Street and Fifth Street. The lighting will add to the effect of the total building at night. East Wall & Trellis Figure 2.1: Trellis Location Figure 2.2: Trellis Site Plan Lighting/Electrical 9 Lisa Bornemann
SPACE CONDITIONS MATERIALS GROUND COLUMNS TRELLIS Red Brick ρ = 0.30 Table 2.1: Trellis materials Red Brick ρ = 0.30 White painted wood covered with ivy ρ = 0.70 DESIGN CRITERIA DESIGN CONSIDERATIONS Task Criteria Show Texture of brick Graze the brick Limit flux above horizontal Light Pollution Lighting systems should not project upward Table 2.2 ILLUMINANCE CRITERIA Task Horizontal Vertical Walkways intermediate areas 0.6 fc 1.1 fc Table 2.3 DESIGN GOALS To create a pleasing, distinctive environment To highlight the ivy To draw attention to the building area To provide a power density that is less than the recommended value from ASHRAE/IESNA Standard 90.1 ACTUAL DESIGN There are three parts to the lighting design of the trellis and east exterior wall. First, the brick east wall will be uplit by a recessed fixture that will graze up the side of the wall showing off the texture of the brick. The brick columns be downlit by fixtures mounted in the trellis. With the ivy on the trellis, the fixtures can be hidden. The Lighting/Electrical 10 Lisa Bornemann
third element to this design involves uplighting the ivy on the trellis. This will be done using a step light that has been inverted to uplight the ivy. The steplight chosen has a copper finish on the faceplate and is about the size of a brick so it should blend in well with the column. UPLIGHT BRICK FACADE: In-grade metal halide uplights UPLIGHT IVY ON TRELLIS: Inverted compact fluorescent recessed step light GRAZE BRICK COLUMN: Metal halide accent light hidden within trellis Downlight lights the walkway as well as the column Figure 2.3: Sketch of lighting concept Figure 2.4: Fixture layout Lighting/Electrical 11 Lisa Bornemann
Ivy on white wooden trellis Type FJ Brick column Metal halide accent light hidden within trellis Type FI Figure 2.5: Sketch showing fixture location Type Description Manufacturer Lamp Wattage Ballast FI Surface mounted cylindrical metal halide downlight 7.5" long with dark bronze finish Elliptipar CMH35/T6/G12 35W Electronic FJ FK Wall mounted rectangular step light with compact fluorescent lamp and copper finish Recessed in-grade uplight fixture with 12" aperature and metal halide lamp Belfer 13W CFL 13W Electronic Hydrel 100W MH 100W Electronic Table 2.4: Fixture Schedule Lighting/Electrical 12 Lisa Bornemann
CONCLUSION: This section of the report showed concepts for the lighting since it was exterior. These fixtures all have photometrics that make them appear as though the target illuminance values will be met. Lighting/Electrical 13 Lisa Bornemann