Friday, November 6, 2009

Re: WF Beams with F.P Weld @ Midspan

In a message dated 11/6/09 10:58:41 AM, writes:
A 1/8" per foot slope is small and the camber and live load deflection might make that drainage slope insignificant.

I second that emotion, only changing "might" to "WILL."   1/8" is worthless; 1/4" *may* be adequate; my understanding is/was that the federal standard for their own projects was 1/2".  Remember that the slope in a diagonal drain, as at a corner, is likely to be only half that of the main slope.