Well, this is a great idea and, as is said, "a picture is worth a thousand words". The inclusion of the pic, priceless. A follow-up question if you will. Given the 40 foot length of the building and the fact these are 4 feet per unit, we'd say there is a need for 30 but, allowing for the space between each unit, I'll guess 8, possibly 9 units per 40 feet, total of 32-36 units total.
I'm thinking of a possible variation of this pattern for my needs. It appears that the entire floor space may be devoted to a workshop and the need for uniform, high-intensity lighting generalized for the 24 x 40 area. Since my use is primarily intended for farm equipment storage, varying the pattern of light placement, "concentrating" the work/"office" space may be best for my use, providing lesser illumination to the storage areas which will be illuminated much less frequently. In addition (just thinking out loud) a dimming ability may be of use as well.
This is great info, I was at a loss of where to start. Thanks!
Karl