I'm aware of the calfo overflow design and I've used it before but didn't see the results of better surface skimming. Increasing the linear distance doesn't increase velocity, how could it since you're increase the area, so how can it increase surface skimming? The link doesn't provide any real information on larger overflows, it seems to be based more on a silent standpipe design.
Last edited by sphelps; 12-18-2008 at 02:19 AM.
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