How Many Foot Candles Do I Need?

How do you calculate foot candles?

Calculation Cheat Sheet:To calculate Lumens (Lux) from foot-candles: Lumens = Foot Candles x 10.76.To calculate Watts from foot-candles: Watts = Lumens x 0.001496.You can also calculate the number of watts directly from foot-candles by combining both equations & using the following: Watts = Foot Candles x 0.01609696..

How many foot candles do I need for a parking lot?

The horizontal luminance shall have an average maintained one foot-candle with a minimum level of 0.25 foot-candle on the parking lot surface from dusk until termination of normal business hours.

How many lumens is a 30×40 shop?

For example, a 40-watt fluorescent bulb puts out about 2,200 lumens. A 60-watt incandescent bulb puts out about 800 lumens. Likewise, how many lumens is a 30×40 shop? 30X40=1200sqft X 100 Lu = 120000 /2600 = 46 T8 32W tubes or 12 4 tube fixtures.

How bright is 40 foot candles?

In some areas, foot-candles will be higher than 40, and in other areas, it will be lower, but it will average out at 40. You’d need a fixture or multiple fixtures combined that will give you about 40 lumens of light per square foot.

How many foot candles do I need in an office?

20 foot candlesOffices and Indoor Spaces A requirement of 20 foot candles is recommended for general spaces in offices. In areas where reading and detailed tasks are carried out, 50 foot candles of lighting is sufficient.

How many foot candles of light do I need?

To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.