Norton's National Sewer Tour. It's time to talk about safety factors for sewers.
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From Water Environment Association Conference 2022,
From Water Environment Association Conference 2022,
There has been much discussion in our industry about the use of 0.28 L/s/ha as peak long term I/I allowance (safety factor). Its use is not well understood by our industry. See graphic at right. The 0.28 L/s/ha (half that in BC) that is used in the sanitary sewer design sheets across Canada is a long-term safety factor.
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