At MHSC Energy, every lighting layout we produce is grounded in two things: performance and practicality. Our recent project for McCoy’s in Okmulgee, TX reflects that commitment perfectly—offering a highly efficient, contractor-ready design optimized for both visual clarity and long-term energy performance.
This layout takes into account not just light levels and fixture placement, but how the space will function when filled with materials, shelving, and real-life movement. From lux levels to mounting strategy, our approach ensures that both form and function are covered.
Luminaire Specifications
The Okmulgee project uses the LHB11550, a fixture well-regarded for its reliability in warehouse and retail environments. It provides a strong balance between high lumen output and energy efficiency, making it a go-to for facilities like McCoy’s that require broad, clear coverage across open floor areas.
Fixture Breakdown:
Fixture Type: LHB11550
Number of Lamps per Fixture: 1
Lumens per Lamp: 16,858
Total Fixture Quantity: 149
Total Wattage: 16,747.6 W
Light Loss Factor (LLF): 0.950
Average Illuminance: 135.65 lux
Efficiency %: N/A
By deploying 149 fixtures in this space, we ensured even coverage while leaving room for future layout adjustments if needed. The slightly conservative LLF of 0.950 accounts for factors like dirt accumulation and lamp depreciation, helping ensure the actual performance matches the design over time.
Layout & Space Considerations
The lighting layout was modeled using detailed coordinate-based planning (in feet/inches) to match architectural specifics and mounting structure availability. Here are the key spatial dimensions:
Wall Height: 20 ft
Mounting Height: 18 ft
Workplane Height: 2.5 ft
This setup positions the lighting at an optimal height to ensure clear visibility at shelving and pallet levels, without causing harsh glare or shadowing below. The 2.5-foot workplane height mimics typical product browsing or packaging areas, ensuring real-use accuracy in our modeling.
Reflectance Settings (Default):
Ceiling: 0.80
Walls: 0.50
Floor: 0.20
These reflectance values represent a realistic baseline. While some materials or wall finishes may increase reflectance and apparent brightness, we design to the lower end of expected performance to ensure we’re never misleading on photometric expectations. If anything, most spaces will be slightly brighter in reality than our model suggests.
Fixture Placement Philosophy
As with other McCoy’s locations, we’ve continued to implement our reliable three-row strategy, often using 8–9 fixtures per row, depending on spacing and room configuration. This structured grid ensures:
Uniform distribution of light across product zones
Ease of installation, since rows are linear and repetitive
Flexibility, if future racking or display adjustments are needed
Thanks to the LHB11550’s generous cord length and adaptability, the team on-site can reposition fixtures if needed to better accommodate any changes after installation. This modularity is a major benefit for both electrical contractors and McCoy’s operational staff.
Planning for Racking & Real-World Use
Currently, the Okmulgee layout assumes an open-floor design. As with many McCoy’s locations, racking and shelving will be added after lighting is installed. That’s why we’ve deliberately modeled the lighting a bit on the higher side:
Initial average lux: ~135.65
Expected post-rack lux: ~80–90 lux
This strategy ensures that even once tall shelving is installed, light distribution remains effective. By building in a margin, we prevent future dark zones or safety risks—and save on expensive retrofit costs down the line.
Installer-Focused, Contractor-Ready
This layout was designed with ease of installation in mind. Fixture types are standardized, the mounting height is consistent across the site, and no specialty wiring or aiming is required. It’s a straightforward project for any lighting contractor, which translates to:
Faster installation timelines
Fewer material variances
Smoother inspections and walkthroughs
Whether you’re bidding this job or planning a similar one, MHSC Energy’s layouts are always made to work—not just on paper, but on the field.
Let’s Talk About Your Next Lighting Project
The McCoy’s Okmulgee project is just one example of how we combine smart photometric design with real-world practicality. If you’re a contractor looking for reliable layouts or a facility manager in need of upgrade options, we’re here to help.
📩 Contact MHSC Energy today to get a layout that’s engineered to perform—and built to last.
