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  1. lpvaa

    Time of concentration and Curve Number through Railroad Ballast

    I am trying to compute the time of concentration (Tc) through railroad ballast. The ballast section is only 6" thick and includes a gradation of 2.5" minus. Currently we are thinking that we need to compute the Tc verticaly and then horizontaly. The railyard varies from 100' - 120' wide...

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