How is the slope of a drainage ditch (open channel) determined?

2015-10-26View Original

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How is the slope of a drainage ditch (open channel) determined?

Reply #22015-10-26

I should have the corresponding design specifications on hand; I can’t remember the name. I’ll check them when I go to work tomorrow.

Reply #32015-10-26

2.5% to 3% in terms of experience value is sufficient; this is the requirement in all the projects I’ve worked on. On-site supervision is necessary to ensure quality – without it, the overall slope might be acceptable, but local areas could still accumulate water. Mistakes are likely to occur during construction, so supervision is absolutely essential and must not be neglected

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