SuDS in London - a guide
sustainable-urban-drainage-november-2016
sustainable-urban-drainage-november-2016
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Case study 7 –<br />
Bioretention<br />
Location<br />
A24 <strong>London</strong> Road<br />
<strong>London</strong> Borough of Sutton<br />
Date<br />
2014<br />
<strong>SuDS</strong> components<br />
Bioretention planter<br />
De-pave<br />
Tree plant<strong>in</strong>g<br />
Objectives<br />
To reduce hard pav<strong>in</strong>g on a wide<br />
pavement and plant trees and perennials<br />
to aid water attenuation.<br />
Outcome<br />
Six areas were de-paved and planted<br />
with birch trees and a variety of hardy<br />
perennials. This has improved the<br />
streetscape and reduced the hard paved<br />
area contribut<strong>in</strong>g to surface water runoff.<br />
Each plant<strong>in</strong>g area has been mulched with<br />
gravel and conta<strong>in</strong>s an outlet. Orig<strong>in</strong>ally<br />
envisaged as ra<strong>in</strong> gardens, the design was<br />
subsequently amended to limit surface<br />
water runoff <strong>in</strong>to the plant<strong>in</strong>g areas by<br />
<strong>in</strong>stall<strong>in</strong>g a raised edge. The project had<br />
Local Implementation Plan (LIP) fund<strong>in</strong>g<br />
and was delivered by Sutton on the TLRN.<br />
Outlet detail<br />
Plant<strong>in</strong>g<br />
50 3 <strong>SuDS</strong> components
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