Warehousing
Rack capacity truncates in three directions at once. A rack that is nominally big enough usually is not, by one roll in every direction.
— rolls
After clearances and whole-roll truncation
Cylindrical rolls in a rectangular bay cannot exceed about 78% packing even when perfectly nested, so utilisation below that is normal rather than a planning error. Floor loading is averaged over the bay footprint — check the point loads under the rack feet against the slab design separately.
Fabric Roll ASRS Rack Capacity & Floor Load Calculator — free, with the formula and a worked example, at Textile School.