Debris flowing down the downspout drain (leaves from gutters) can block floor drains or even the main building sewer line, leading to sewage backups into the structure. Debris flowing down a downspout drain that has been (foolishly) connected to the building foundation drain system can block tha...
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SOLUTION: Rainwater is passed through eave gutters 2, 2', leaders 3, 3', eave gutters 2a, 2a', and leaders 3a, 3a', and flowed into a collecting pipe 4 connected at the lower ends of the leaders 3a, 3a'. The opening end of the collecting pipe 4 is connected to a water storage ...