The following data specifies lighting recommendations to achieve 20 footcandles of illumination per 50 feet of barn length for: Freestall, Open, or Curtain-sided Barn Types

Barn Layout Typical Width (ft) Surface Area to be Lighted (sq ft) 1 Clear Height (ft) 2 Mounting Height (ft) 3 Fixture Make/Model Number Lamp Wattage (Watts) Number of Fixtures Required per 50 ft
2 row tail to tail 39 1,950 10 4 Lumark/HPBE-5A-150 150 5
10 4 Lumark/MPBE-5A-175 175 6
12 6 Lumark/HPBE-5A-150 150 6
12 6 Lumark/MPBE-5A-175 175 7
14 8 Lumark/HPBE-5A-150 150 6
14 8 Lumark/MPBE-5A-175 175 8
16 10 Lumark/MPBE-5A-250 250 6
18 12 Lumark/MPBE-5A-250 250 6
2 row head to head 40 2,000 10 4 Lumark/HPBE-5A-150 150 5
10 4 Lumark/MPBE-5A-175 175 6
12 6 Lumark/HPBE-5A-150 150 6
12 6 Lumark/MPBE-5A-175 175 7
14 8 Lumark/HPBE-5A-150 150 6
14 8 Lumark/MPBE-5A-175 175 8
16 10 Lumark/MPBE-5A-250 250 6
18 12 Lumark/MPBE-5A-250 250 6
3 row tail to tail 48 2,400 10 4 Lumark/HPBE-5A-150 150 6
10 4 Lumark/MPBE-5A-175 175 7
12 6 Lumark/HPBE-5A-150 150 7
12 6 Lumark/MPBE-5A-175 175 8
14 8 Lumark/HPBE-5A-150 150 7
14 8 Lumark/MPBE-5A-175 175 9
16 10 Lumark/MPBE-5A-250 250 7
18 12 Lumark/MPBE-5A-250 250 7
4 row tail to tail 97 3,850 10 4 Lumark/HPBE-5A-150 150 10
10 4 Lumark/MPBE-5A-175 175 12
12 6 Lumark/HPBE-5A-150 150 10
12 6 Lumark/MPBE-5A-175 175 13
14 8 Lumark/HPBE-5A-150 150 11
10 5 Metalux/VT-296HO-DR-DL 110 14
10 5 Metalux/STN-248HO 60 26
10 5 Metalux/STN-296HO 110 12
12 7 Metalux/VT-248HO-DR-DL 60 32
12 7 Metalux/VT-296HO-DR-DL 110 15
12 7 Metalux/STN-248HO 60 29
12 7 Metalux/STN-296HO 110 13

  • Note 1:  Cow level has been defined as 4 feet above the surface the cow stands on.

  • Note 2:  Clear height is the distance from the cow-standing surface to the ceiling surface.

  • Note 3:  Mounting height is defined as the distance above the cow level (4 ft) to the bottom of the light fixture.

 Freestall Table       Tiestall Lighting Table 

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