Lighting calculator

[bookman51]

I am looking for a lighting calculator to help me calculate how much light for my shop. So far the ones I have found on the Internet do it for tungsten or tubes. I am thinking about CFL. Some do it by wattage, which I would think is essentially worthless when using CFL. Also, I have about 15' to the rafters, and I want to find one that takes into account the distance of the light to the floor. Final question, and I have seen some threads on this, but what lumens do people recommend for a shop area....and a storage area (old tractors)?

Thanks in advance

Bookman

 

[viper522]

I've tried this one
http://www.gelighting.com/na/business_lighting/education_resources/tools_software/toolkit/layout.htm

 

[HIRISC]

http://www.a-wall.com/lightcalc.php

 

[bookman51]

Fellows, Thanks, but I do not see how either of them work for what I am looking----how many CFL to put in when placed at a certain height.

Thanks for trying

Bookman

 

[gatchel]

I have seen references to this based on location not lighting type. For recessed it's typically half the ceiling height for spacing.

 

[79BlackPearl]

Some points of reference............

http://garagejournal.com/forum/showthread.php?t=38658&highlight=30X30

http://garagejournal.com/forum/showthread.php?t=42589&highlight=30X30&page=3

 

[bookman51]

79BlackPearl,

Thanks, I had followed the Veno thread but not Delmarva's. I would like to hat they have done but looking for some idea for how many CLF for my shop. I see that Veno wished he had put in a couple more per grid.

I have a 40x72 building with 32x40 as shop and the rest storage (antique tractors) in Nebraska. I want the shop part well-lighted, but probably will put in fewer in the storage part. Also, want to see folks' experience with these CFL in colder weather. Veno in Texas. but I think Delmarva is east coast.

Thanks again.

Bookman

 

[skipnay]

Does anyone have one that is up to date that works?

 

[Showkey]

Here one of many LUX value charts available.

http://www.engineeringtoolbox.com/light-level-rooms-d_708.html

You can use a smart phone app to get a ball park measurement of lux reaching a work surface. I try to get a 1000 lux on the work bench top.