Design and Engineering Forum
[Home] [Design Resources]
[ POSTING POLICY / RULES ][Archive#1] [Archive #2] [Archive #3] [Calculators]

candle ft calc.
Post Reply   Forum
Posted by: RandyKimball
05/23/2004, 19:27:16

Author Profile Mail author Edit
I need to know how to figure the candle feet in a new building based (I assume) on the known number of watts of light from the overhead lighting at a known distance to the ceiling.


The worst suggestion of you lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

Post Reply | Recommend | Alert Rate View All   | Next |

Replies to this message

Re: candle ft calc.
Re: candle ft calc. -- RandyKimball Post Reply Top of thread Forum
Posted by: Cragyon
05/24/2004, 07:31:37

Author Profile Mail author Edit


I think your assumptions are right.  You might research building codes and associated engineering data.  I'll bet there is an equation or standard for lighting requirements and assumptions.  Once you know how much light is available and the distance you should have enough for a estimate. 

Additionally,  have you ever seen those light source measuring devices which photographers use?  Maybe you can borrow one and measure directly?

Here are some basic conversions:

10.764 foot candle = lux

3.142 candle/sq. cm = lamberts

0.487 candle/sq. inch = lamberts

1 lambert    = 0.3183 c/cm2

1 lambert    = 2.0536 c/in2

1 lambert    = 1 lumen/cm2

Modified by Cragyon at Mon, May 24, 2004, 07:32:36

Post Reply | Recommend | Alert Rate Where am I? Original Top of thread

Powered by Engineers Edge

© Copyright 2000 - 2019, by Engineers Edge, LLC All rights reserved.  Disclaimer