You'd be better off storing the coil based on rack load, interference, obstacles, etc., then scanning it's location off of the rack label and inputting that? It shouldn't matter that they go into specific spots - especially adjacent ones. These weigh what - anywhere from 10k to 40k pounds? The idea of using a db to stipulate that one rack should hold 10 35k lb coils and another one should hold maybe 10 10k lb coils doesn't make sense to me. But it's your business so you can do what you want to I guess.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.