It's all here: https://en.wikipedia.org/wiki/Pascal_(unit)

For the UIAA specs rope, I think, just get it's TS, divide by the 138, multiply by the cut surface of the sample tested above divided by your bottle strand's cut surface, and then multiply by 2 the resulting number of strands required just in case Should be a safe estimate, as you most likely will intertwine all the bands which makes the total TS better.