INTERPAVE
This approach is exemplified in Bridget Joyce Square , London , an important regeneration project designed by Robert Bray Associates ( RBA ) in conjunction with McCloy Consulting for the London Borough of Hammersmith and Fulham , which won the top prize at the 2017 Landscape Institute Awards . Here , a typical , adopted asphalt street and adjacent parking areas were transformed for community use with CBPP overlay shared surfaces and tree-planted raingarden basins – an exemplar for future urban landscapes . The basins provide water storage for SuDS to reduce overloading existing drains , as well as for irrigation .
WELL-ESTABLISHED GREEN INFRASTRUCTURE
Concrete block permeable paving in conjunction with green infrastructure transforms Bridget Joyce Square , London .
LOW INTERVENTION RETROFIT
Another important innovation , particularly for regeneration , is the retrofitting of CBPP as an overlay onto existing , conventional road bases or other hard surfaces . These thin overlays create attractive , safe and sustainable shared-surfaces . They can be particularly effective when used to supply a gradual flow of clean water horizontally into raingardens or bioretention areas with trees and other green infrastructure , via simple slot inlet / outlets , to store water for irrigation , biodiversity and SuDS . Such lowintervention technique active travel , low traffic and open space initiatives .
Interpave revisited the project in August 2021 , around 5 years after completion , and noted that trees and other green infrastructure were healthy , substantial and particularly wellestablished . The permeable paving is also performing well and , it is understood from local sources , experienced no problems during this year ’ s extreme summer storms , despite extensive flooding nearby .
RBA founder , SuDS expert and landscape architect Bob Bray commented : ‘ All the plants have grown really well . Birches are particularly sensitive to drought and urban heat island effect but they have thrived here and the vegetation has remained green all summer . The critical thing seems to be that even small rainfall events are captured by the permeable paving in summer and with larger events concentrated in the basins ’.
For project case studies and guidance on all aspects of permeable paving and SuDS visit : www . paving . org . uk
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