Introduction
Ensuring proper lighting in a parking lot is crucial for safety and security. Well-lit parking lots not only help deter criminal activity but also provide a safe and welcoming environment for visitors. But how do you determine the right number of lumens needed for your parking lot? This article will explore key factors to consider and guide you through the process of making an informed choice.
What Are Lumens?
Before diving into the specifics, it's important to understand what lumens are. Lumens measure the total amount of visible light emitted by a light source. In simpler terms, it reflects the brightness of the light. For parking lot lighting, lumens play a vital role in determining how well the space is illuminated.
Key Factors to Consider
Size of the Parking Lot
The size of the parking lot is one of the most critical aspects when determining the required lumens. A larger lot will obviously need more lumens to provide sufficient lighting. Measuring the total square footage accurately is essential.
Mounting Height
The height at which the lights are mounted affects both the spread and intensity of the light. Higher poles generally require lights with higher lumen output to ensure even coverage.
Desired Brightness Level
The level of brightness you need will depend on how the parking lot is used. High-traffic areas may need more intense lighting, whereas areas with lower traffic might get by with lower lumen levels.
Type of Lighting Fixtures
Different types of fixtures deliver varying levels of lumens. For example, LED lights are highly efficient, offering more lumens while using less power compared to traditional lighting options.
How to Calculate the Required Lumens
Now that we've covered the major factors, let’s discuss how to calculate the number of lumens needed for your parking lot.
Determine the Square Footage:
Measure the length and width of the parking lot and multiply them to find the area. For instance, if the parking lot is 100 feet long and 50 feet wide, the total area is 5,000 square feet.
Decide the Desired Brightness:
Brightness is measured in foot-candles (fc), and for a parking lot, the typical range is between 5 and 10 fc. Let's assume you want 7 fc for your lot.
Use the Formula:
Lumens = Area (in square feet) × Desired Foot-Candles
For example, 5,000 sq. ft. × 7 fc = 35,000 lumens.
