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Anonymous Poster

Lightning Question

01/20/2011 4:15 AM

Sir.

I am an working insoftware can any body suggest that the lumens required for the above details

room size:26.6fts length * 15.0 fts breadth

total workstations :10nos .

presently we are using 28w fixtures -12nos.

and 18w sets -2nos .

but the lightning is dull in room.

request you to suggest the how many lightning fixtures to be used 2*36w .

and how much lumens required in the workstations and the room.

chary
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Anonymous Poster
#1

Re: lightning

01/20/2011 4:28 AM

You mean Lightning ?

or Lighting ?
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Anonymous Poster
#2

Re: lightning

01/20/2011 6:44 AM

Lightning is not recommended in the room.
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NotUrOrdinaryJoe
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Good Answers: 73
#3

Re: lightning

01/20/2011 8:28 AM

You never told us what kind of work is being done in the room. Here are some guidelines (in foot-candles) for design:

3fc For all emergency lighting

10 For stairways, corridors, and hallways with casual use and bulk storage.

20 For service area corridors elevators and areas involving non-precision work for short times.

30 For stock areas, occasional reading, rough assembly or casual machining.

50 For general office background, some sorting or reading over longer periods of time and non-precision machining.

100 For areas involving inspection, machining, medium difficulty assembly.

200 For areas involving precision assembly, inspection, and machining.

500 For fine detail work such as dental work or general surgery.

You can always provide less or more as you like. You can search this forum for how to convert total lumens to foot-candles. Lumens alone does not take into account the distance from the light source.

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pnaban
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Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#5
In reply to #3

Re: lightning

01/21/2011 9:23 AM

Are these values recommended by CIBSE or Illumination Engineers Society or similar approved body?.Thanks

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JRaef
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#4

Re: Lightning Question

01/20/2011 7:59 PM

GA for that list.

Back in the "olden days" I used to do a lot more lighting (lightning?) jobs and had a nice little lumen meter that had most of that info on the back. The entire thing was the size of my palm, so the writing was incredibly tiny. I have to imagine that I would be totally unable to read that now!

I never ceased to be amazed at how poor the lighting is in many places, and I kept running into bosses and landlords who were real scrooges when it came to that. I remember one job I did for a manufacturer of spray paints, the warehouse was so dim the forklift drivers carried flashlights to be able to read the crates! I designed a new fixture arrangement to replace the incandescent bulbs (this was in 1978) with T12 fluorescent fixtures, their error rate dropped 6 fold!

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67model
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Join Date: Dec 2010
Posts: 1686
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#6

Re: Lightning Question

01/21/2011 1:09 PM

You do not indicate if lighting is incandescent or fluorescent or straight tube etc or the spotlights which seem to be fashionable (with the glare addicted?).
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