Seepage Pits For Roof And Patio – RB Project #8.2

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Engineer For Beauty And Longevity

I’ve said it before and I’ll say it again: “With landscape design you must consider the dynamics and influences of the site on your design.”  I know I bore homeowners to no end when talking about the engineering of their property, but if that aspect is neglected, it’s likely you’ll never have the landscape you’ve dreamed of.

On this project we planned patio areas, which would increase the impervious coverage on the property.  Town code required that we provide seepage pit capacity for the “runoff” from these new impervious surfaces.

seepage.pit_roof&patio2After site analysis and gathering  topographic data, it became apparent that water runoff from the upper part of the property could impact some of our new work.  The biggest contributor to this runoff threat was the home’s roof water that just emptied out from leader pipes onto the grade.

After explaining the condition to the homeowner and how cost effective and practical it would be to tackle the issue now, we got the go-ahead.  It was determined that one additional seepage tank would accommodate the roof water.

With the excavator on-site, the adding of the additional tank was pretty straight forward.  Roof water was piped directly into the new seepage pit, and a piece of PVC pipe was stubbed up above grade to accommodate our future connection for the new patio surface water.

Managing water and runoff in a landscape is paramount.  I have renovated too many projects where this fundamental principle was not considered.

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Here’s the previous post on this project. And here’s the next.

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