ELECTRIC LIGHTING: EXERCISE 5 Kaitlyn Molner Kayla Fieldhouse 11/15/2013 Environmental Systems II
LIGHTING TASKS + CONTROL LOCATIONS Lighting Tasks General Office Desk Work Core
Relative Light Level 50 fc 100 fc 3 fc
Lighting Character General Task General
Illumination Strategy Indirect Direct Diffuse
Control Types Light sensors Manual Motion sensors
SWITCHES MANUAL LIGHT SENSOR
CORE
DESIGN INTENTIONS The office floors receive daylight from all sides with the intent to reduce the need for electric lighting during typical office hours. The necessity for 50 footcandles of electric lighting in the general office space can then be reduced using light sensors to detect the amount of daylighting available and supplement that with the amount of electric lighting to reach 50 footcandles. At each desk location task lighting is provided to make up the difference from 50 footcandles to the 100 footcandles of light needed for desk work. With these supplementing one another, the building is able to reduce the electrical lighting load in comparison to a typical office building. Instead of providing all the lighting for the office space, electric lighting is supplemented by ‘free’ natural daylighting. Each office desk is not always in use, so the task lighting may be turned on only when needed. Indirect light fixtures were also chosen for the general office lighting the provide a more even distribution of light in comparison to direct lighting.
DAYTIME LIGHTING CHARACTER
CORE
NIGHTTIME LIGHTING CHARACTER
FINAL DESIGN Luminaire Pendent Task Light Indirect Suspended Light
Lamp LED Fluorescent
CORE
REFLECTED CEILING PLAN 0 9’ 18’ 36’
Count 81 24
Light sensor controls Each desk has a manual control for its corresponding penant light
CORE
FLOOR PLAN + LUMINAIRES + LIGHITNG CONTROLS