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  • Users: texasrhb
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  1. texasrhb

    Downspout and valley sizing

    First post. I need to verify sizing of roof valley gutter and downspouts required. C=0.99 A=1(acres) I= 8.0 in/hr. I used the circular weir formula Q=CA(2gh)^0.5 I am not aware of any COde Requirment for this and am not sure that Q=CIA is applicable for roofing systems (although it would...

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