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Hi good people, I was just wondering, Is there any differance in the tincil strength of the rails or bridge/trestle gerders from one end to the other? Say for instance a bridge crosses a river and one bank is granet and the other is sand stone and due to the differant expantion rate of the to types of stone would the tincil strength in the steel have to compensate? Thanks for the input, and please forgive my spelling. railwayray Sagle Idaho LOVE THAT BNSF
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