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Old 02-19-2018, 12:07 PM   #1
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Default Calculating lumens per room

Just wondering how many people actually use lumen charts when doing lighting for rooms. I use a guide like this http://www.charlstonlights.com/led-l...ent-calculator
which determines lumens per square foot and type of room lights are installed in as well as a lay out scheme ie centered or in corners like recess lights but was curious if others use charts also or just wing it and put in dimmers if its too bright
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Old 02-19-2018, 12:16 PM   #2
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That's usually the architect's realm. We provide the VA/sq.ft., the "interior designer", or architect decide how to distribute it. Sometimes "we" do the designing by asking "you want the light, where"?
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Old 02-19-2018, 12:20 PM   #3
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Quote:
Originally Posted by bostonPedro View Post
Just wondering how many people actually use lumen charts when doing lighting for rooms. I use a guide like this http://www.charlstonlights.com/led-l...ent-calculator
which determines lumens per square foot and type of room lights are installed in as well as a lay out scheme ie centered or in corners like recess lights but was curious if others use charts also or just wing it and put in dimmers if its too bright
I use a chart for overall foot-candles per room type and then use the equal lighting formula to lay them out if the engineering doesn't already include it.
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Old 02-19-2018, 01:05 PM   #4
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Lumens are strange and whacked now with LEDs.

Foot candles will be the next norm I suspect.
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Old 02-19-2018, 06:37 PM   #5
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I've tried different apps, read tons of designer blogs and have installed hundreds of cans.

I go by my gut and my own experience nowadays.

The best info I've found is on the packaging or installation instructions. That funny looking lighting cone diagram that's full of info and a bit hard to take in.

I also prescribe to the theory that the brightness of a room is perceived by how bright the walls are. Down lights in the middle of a ceiling are task specific and aren't needed to "brighten" a room IMO.
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Old 02-19-2018, 06:44 PM   #6
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Depends how many the customer wants to pay for each light.
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