Flat Car Load Placement

Nelson Moyer

A while back, there was a thread on transformer loads on flat cars, and there was no consensus on where to place a single heavy load, i.e. in the center of the car or over one of the trucks. I was cutting out decals for the Owl Mountain SP F-50- 10 flat car tonight, and there is a stencil to be placed on the center of the side sill that reads:



            NOT EXCEED 50000 LBS


The car has a capacity of 100000 lbs. and a load limit of 134900 lbs. with a light weight of 34100 lbs., so any single load between 50000-100000 lbs. would be placed over one of the trucks. I don’t know if this load restriction is unique to the SP, or SP is following a standard practice for heavy single loads. Apparently the fishbelly center sill on the F-5--10 had a deflection at the center of a linear load restriction of 50000 lbs.


Nelson Moyer



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