Re: Flat Car Load Placement
EXACTLY! So, the deal here is that the optimal loading position for a flat car for ride characteristics is the center of the car, BUT, almost all flat cars were restricted to significantly less than their capacity if the load was carried on the center of the span. What we have are two competing issues. NOTE, that a load, at the center of the span, placed on stringers or other supports at 1/3 and 2/3 of the span is NOT loading the center of the span. There were a few, very specifically and typically short cars that were designed to carry the full load at the center of the span. The Milwaukee Road welded gun flats (ancient Roundhouse car) and the PRR F22/23 “gun flats” are examples.
Hmmmm… I do.. and it bugs me when I see obvious fails, such as the use of a 70 ton flat to carry one M4 Sherman tank (which is too little load for efficient car use).
Bruce F. Smith
"Some days you are the bug, some days you are the windshield."