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Originally Posted by jinman
Tom, when I looked at your first picture, I could just see water going over the culverts about 1' deep. Your single culvert picture looks like it had that in mind and was designed to let floods top it. I suspect that even two culverts will not take the flow from a flash flood. If there are developments in the area, all those lawns, streets, and concrete shed water. I'd start from zero like you are planning and build culverts for the 90% flow and the entire bridge to withstand being topped in a flood for the final 10%. I think you have to design the top so water won't erode from the top down as well as the sides of the culverts. If you use a single culvert, you only have two sides to deal with. If you stick with two culverts, you have that center section between the culverts to stabilize and that makes a much more complex structure in my opinion.
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Thread title caught my eye. I thought somebody else met my neighbor/"he only comes here when he wants something."
I think jinman is right on. Ironhorse is a boni-fide, card-carring genius(his pic gallery proof)Eddie has cute kid and does nice work. I have seen corrigated culvert(after dug out) worn on one side 1yr. old placed in a turn in the creek. Shocked me? Once worn sink-holes appear dead smack in the middle of the dike? Hard to believe water and sand/soil can do that to metal? keep cuverts straight with the creek. just food for thought
