Formula to determine lighting requirements
- Thread starter Telaid
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jtester
Senior Member
- Location
- Las Cruces N.M.
Manufacturers offer tables with recommended values. IES offers values, etc. If you are governed by an energy conservation code, you'll find it takes an effort to illuminate to the values suggested and stay under wattage limits.
I often illuminate normal offices in the 50-60fc range. If I'm using indirect lighting, it is a bit lower.
Jim T
I often illuminate normal offices in the 50-60fc range. If I'm using indirect lighting, it is a bit lower.
Jim T
robbietan
Senior Member
- Location
- Antipolo City
from osha.gov
Provide supplemental task/desk lighting to adequately illuminate writing and reading tasks while limiting brightness around monitors.
Generally, for paper tasks and offices with CRT displays, office lighting should range between 20 to 50 foot-candles. If LCD monitors are in use, higher levels of light are usually needed for the same viewing tasks (up to 73 foot-candles).
Provide supplemental task/desk lighting to adequately illuminate writing and reading tasks while limiting brightness around monitors.
Generally, for paper tasks and offices with CRT displays, office lighting should range between 20 to 50 foot-candles. If LCD monitors are in use, higher levels of light are usually needed for the same viewing tasks (up to 73 foot-candles).
jtester said:
It takes an effort not to cuss when doing anything under the IECC. I can only use 1 watt/sq foot for lighting, but the HVAC guys can still supercool the air and then heat it back up with electric reheat.
That doesn't make any sense to me.
Steve
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