# Ch. 13

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1. Lighting Art: 3D
• front light 30-40 degrees
• light a surface behind
2. Lighting Art: Flat
• o Uniform vs. Non Uniform
• o 30 degree angle best
• Minimizes reflection
• No shadow from viewer
3. Lighting Art: Conservation
• o Limit UV and Visible radiation
• o Limiting light and heat
• § Evaluate daylight exposure
• White paint is good
• § Evaluate electric light exposure
• filter
• May need UV filter
• Lower footcandles
• § Evaluate duration of exposure
• Remember warmer light is better at lower levels
• Reduce the level and length for success
4. SC:
spacing criterion, is the center to center distance between luminaries (provided by manufacturer)
5. MH:
mounting height calculated by subtracting 30” from the room height or source of light as in the case of a pendant fixture.
6. S=MH X SC
• o If a room has 10’ ceilings with recessed fixtures that are used as general ambient lighting how far apart the fixtures should be mounted to create even light levels around the room.
• Wall height=10’
• Mounting height= 7-6” (10’-2’6”)
• Spacing Criterion= 1.5 (provided by the specs)
• Space apart= MH (7.5) x SC (1.5) = 11’-3” (11.25)
7. Individual unit, point source wall wash
• o When spacing fixtures out from the wall, they should be placed parallel to wall and placed parallel to wall and places aprox. 1/3 the height of the wall
• § Ex: If the wall is 10’ high the fixtures would be placed aprox. 3’ out

• o Square rule is used for spacing fixtures side to side: centers of fixtures should be closer than or equal to distance from wall (see above) (remember Mrs. Cox’s drawing on white board)
• § Ex: The fixture place at 3’ from
• wall should be space no more than 3’ from each other.
8. Continuous, linear, point source wall wash
• o Spacing is similar to individual unit
• o Mock ups are the best test
9. Continuous, linear, diffuse source wall wash
• o Fluorescent tube lamps work well but not uniform along the full height of the wall
• o Use only on walls from 8’-10’ tall

### Card Set Information

 Author: lkillebr ID: 106819 Filename: Ch. 13 Updated: 2011-10-06 04:11:02 Tags: lighting codes Folders: Description: lighting and codes Show Answers:

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