Are you the civil engineer(ing student?) who asked about caluculating / fomula train draft gear forces?

Question

Sorry it took so long, but, for a moving train (Rolling Train Resistance Formula) it is 20 lbs per ton for each % of grade, +5 or (20 x T) x %G + 5 = f

For starting resistance it is 30 lbs per ton for each % of grade, or (30 x T) x %G = f

Standard draft gear is rated at 240,000 lbs. If the number crunching gives a figure higher than this amount, it's time to add helper power.

As said before, the calculation for speed is Horsepower per ton, times 12, divided by the % of grade, or HPT x 12 / %G = S

Answer 1

I copied, pasted, and printed this. Gonna put it in my tin. Handy info not found in the "Special Instructions."

Answer 2

No, that really wasn't me. Sorry.