How many foot candles do I need for a parking lot?
Accordingto the website crimewise.com, the minimum recommended light intensity is 1 foot-candle. In areas where there is potential damage to vehicles, 2 foot-candles is recommended. These standards are averages although no area in the parking lot should have less than a quarter of the average lamination.
How much light do you need for a parking lot?
We usually recommend two LED Parking lot lighting heads of 20,000 lumens each at about 15-20 feet high on each pole. Space the pole about 20 feet apart. That is average lighting.
How do you calculate lighting for an area?
Lighting Calculation – Summary Multiply the area in square meters by the lux, or the area in square feet by the footcandles. Work out how many bulbs you need. Divide the number of lumens by the number of lumens delivered by each bulb.
What kind of lights are in parking lots?
Most parking lot lights utilize one of three types of lamps: high intensity discharge (HID) lamps such as metal halide, high pressure sodium, and – if they are very old – mercury vapor lamps.
Do LED lights need covers OSHA?
For light fixtures that operate at 600 volts or more, OSHA requires that employers cover fittings and keep them securely fastened shut at all times, including when the fittings are waiting to be painted or serviced. If a system operates on less than 600 volts, this requirement does not apply.
How do you calculate foot-candles?
Multiply the Length times the Width of the Room to get the Room Square Footage. For example, if the room is 10 feet wide and 10 feet long, the Room Square Footage will be 100 square feet. A foot-candle is how bright the light is one foot away from the source.
What is a foot-candle requirement?
One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light.
How do you measure foot candles?
Measure the foot candle reading on the work surface. Measure the foot candle reading at the sensor with the foot candle meter pointing down if the sensor has a downward facing photocell. Calculate the ratio between these two numbers. Choose the desired foot candle reading at the work surface.
How to calculate foot candle?
6 How to measure the foot candle? Measuring the Light Intensity I will use the light meter to measure the number of foot-candles that there are hitting the subject. Converting to Lumens Please note that one foot-candle = 10.76 Lumens*, which means that in order to convert foot-candles to lumens, I would need to take the amount Converting to Watts
What are 10 foot candles?
10 Foot-Candles. During drilling, scaling or mucking in tunnels and shafts, a minimum of 10 foot-candles is required by OSHA standards. Mess halls, indoor toilets and storerooms must also be lit to 10 foot-candles.
How many foot candles are in Lux?
Public areas surrounded by dark areas will generally require 2 to 5 foot-candles, or 20 to 50 lux, while typical offices and classrooms without highly detailed work will need 10 to 20 foot-candles, or 200 lux.