What is the field load and what is the shelf load?

The bay load  is the total load capacity of a shelf bay / the load between two shelf uprights. The own weight does not count here.
Regal Feldlast
The maximum weight on the individual shelf / shelf is called shelf load. The sum of the shelf loads must not exceed the bay load.
Regal Fachlast
A basic requirement is the even distribution of loads both within a compartment and within a field.

The pictures show field load and shelf load using the example of a storage rack.