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CIRIA is a neutral, independent, not-for-profit organisation. We facilitate a range of collaborative activities that help improve the construction industry.


In this issue explore the BIG Biodiversity Challenge and Awards, forthcoming guidance on hidden defects in bridges as well as responsible sourcing in construction plus opportunities to get involved in CIRIA research projects and CPD training.
Learn more
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Guidance on the construction of SuDS (C768)
This guide discusses the construction of the different SUDS components using photos of actual site works to illustrate both good practice and what can go wrong. 
Download a copy of the guidance.

View all research

Project spotlight



Biodiversity Net Gain (RP1048)

In partnership with both CIEEM and IEMA, CIRIA is developing new guidance to help professionals and UK industry address how to safeguard and enhance biodiversity in construction as well as achieve ‘Net Gain’ targets for biodiversity.

Click here to learn more