Basic design requirements needed
Basic design requirements needed
(OP)
Hello,
I am putting fluorescent lighting into a warehouse and I need to know how to calculate the brightness, and I also need to know what are some standard levels of brightness. It seems that brightness would be based on lumens and distance from the bulb to the striking surface. So, for a typical office, how many lumens per square foot is typical? And for a warehouse?
Also, are there published standards which state lumen/ft^2 requirements for commercial spaces?
thanks
I am putting fluorescent lighting into a warehouse and I need to know how to calculate the brightness, and I also need to know what are some standard levels of brightness. It seems that brightness would be based on lumens and distance from the bulb to the striking surface. So, for a typical office, how many lumens per square foot is typical? And for a warehouse?
Also, are there published standards which state lumen/ft^2 requirements for commercial spaces?
thanks
RE: Basic design requirements needed
RE: Basic design requirements needed
RE: Basic design requirements needed
How about some baselines. What is a typical illuminance for an office, for a warehouse, and for a Walmart?
RE: Basic design requirements needed
RE: Basic design requirements needed
http:/
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Basic design requirements needed
"Brightness" is not a measure of the amount of lighting in a space. It is a measure of the source brightness when you look towrd the fixture measured in foot-lamberts.
Illuminance is measured in foot-candles or lux. These are given in the IES handbook for various spaces.
But even with the level in hand you need to know the tasks and the environment. What is being stored? Is it furniture or microelectronics. Is it by the pallet or by the microchip. Is it a 12 ft ceiling or a 60 ft ceiling. Are the aisles 12' wide with lift operation-or 16' wide with catwalks? Is it a mechanized warehouse?
If the storage racks are 30 ft in height what do you care what the footcandle reading is on the floor? What kind of fixtures are you specifying? Hi-bay 400W Metal Halide? Linear flourescents? Is there sky-lighting? What is the AHJ's requirement for maximum wattage density?
Office lighting depending on tasks can be from 20 to 150 footcandles. Warehouses can be from 5 to 70. Both depend on task size and type, space geometry, energy limitatins and local codes.
RE: Basic design requirements needed
http://www.wbdg.org/ccb/browse_doc.php?d=2944