I have both time studied them and operated the equipment. They were round side up in the railcar. a fork truck with a round clamp would grab them and store them round side up in the warehouse. They wewe in a pa ttern like this:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Jammed in tight at the ends, loose at the doors ao the forks could grab it.We always stored on end about 3-5 rolls high. Wasted space usually caused by changes in product mix. Sizes and types overstocked. As a plant engineer, I have several times redesigned layout for the stored paper. About once a year. It took up about 1/3 the plant floor space. Between widths, lengths, paper thickness, coating, and color there was over 500 different types of rolls in the plant.
At the corregator (press in web printing) the roll was turned on side and loaded onto a slide on the floor that permitted the operator to load the paper to the machine. Other than that, it was never round side down. There is also a safety factor, as the biggest sizes could be about a ton and half...
Jim Stewart