# of lighting calculation from cut sheet

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Yi Li

November 19, 2019 04:58

hi, 

i am currently studying for the lighting part for PPD and i am a bit lost when it comes to calculation. please help

so say i have a cut sheet for a lighting fixture. 

and this formula is given from ARE 

how do i calculate the number of luminaries? say if Fc, Area . CU and LLF are given 

in other words. where are the ' lamp lumens' and 'lamps per fixture ' here??

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  Yi Li November 19, 2019 05:00

  

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  Derya Diril November 19, 2019 17:46

  Lumens are listed as Brightness here. Lamps per fixture (aka per luminaire) you will not find on this lamp cut sheet but on the light fixture cut sheet.

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  Yi Li November 22, 2019 21:13

  oh thanks derya. i was a bit confused about that. and now its clear

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