38 ROUND TABLE REVIEW
as possible, then you can steepen it up if needed, but when you stand at the bottom of something that’s 2.5 metres deep and look at a 1:3 slope it’s really steep, it’s horrendous.” He continued: “So, the deeper you go, the shallower the sides’ slopes need to be, which is an incentive to keep the depth shallow.” Matt Clutton offered the developer’s perspective: “It needs a lot of input and collaboration, the ground might be sloping, and one side of the pond might be 2 metres higher than the other, so you need the engineers to model it, and then introduce the landscape architects.”
CONCLUSION
The Government appears to be sticking to 300,000 homes per year as an ‘aspiration,’ at least, and Labour is pledging to build 1.5 million homes. The pressure is on for new developments across the UK, and on developers, to design sustainable drainage solutions that reduce the impact of those developments on their local area and beyond.
The case for SuDS is clear, they deal with stormwater, clean our water supplies and mitigate the impact of our developments in urban sites. They can also, space permitting, help meet
“WHEREVER THERE HAVE BEEN SUCCESSFUL LARGE-SCALE SUDS SCHEMES GLOBALLY IS WHERE THERE HAVE BEEN MASSIVE PUBLIC
AWARENESS CAMPAIGNS,” STEVE WILSON, ENVIRONMENTAL PROTECTION GROUP
INDUSTRY RECOMMENDATIONS
Sue Illman, Illman Young landscape architects – I want to make a plea for using wetlands – they are incredibly diverse and people don’t use them enough. People should use them much much more because they fi t your Biodiversity Net Gain, along with your SuDS and attractive landscapes and lots of other things, so you get big bang for your buck. Chris Carr, Federation of Master Builders – At the moment we are trying to appease everybody, whether it’s the Highways department, water company or anybody else – just have one policy that covers it all, from rain to sea. There’s too much confl ict between external bodies, you’ve got to be a bit more holistic. Steve Wilson, Environmental
With thanks to our sponsors:
Protection Group – We need proper multi-disciplinary design, where it’s a partnership, not one discipline being more important than another. Matt Clutton, Cameron Homes
– Education of both customers and planners, where they are segregating out the area that’s public open space from the SuDS – they need to be combined, which will help with the education because residents will be going into the feature to use it, and will
WWW.HBDONLINE.CO.UK
Biodiversity Net Gain requirements and greatly enhance projects for residents. Bringing in the full range of possible solutions for the full benefi ts ay be a challenge for many, such as SMEs, as the SuDS becomes mandatory in 2024. However, our round table and its recommendations (below) help support the argument for diving fully into the potential to use SuDS to green develoents for everyones benefi t, caveated with key practical suggestions. Our event also highlighted some remaining gaps in knowledge, including between u afi cionados, and housebuilders tacklin a raft of diffi cult problems. However, we think that the event was one valuable effort in the battle to plug those gaps. We didn’t have time to delve further into issues like whether permeable paving should be considered as a ‘natural’ SuDS solution, and the quirks of water companies demanding certain unnecessary engineering solutions causing more complexity than is needed, but we hope to return to this key issue for the industry in future events. We would like to thank our sponsors, Innovyze, Brett Landscaping and Polypipe Civils and Green Urbanisation for supporting Building Insights LIVE.
see the benefi ts. Martin Shaw, Meadfl eet – The main
thing to consider when designing and developing these systems is the lifetime management of them, because they’re a legacy for everyone. Ruth Clarke, Innovyze – Everyone being involved at the right time in a project – everyone is involved, but whether that gets fed in at the right time, and the bigger picture needs to be looked at – and the adoption by any water company is really key. Jamie Gledhill, Brett Landscaping
– Multifunctional design, and incorporating engineering with landscape design – stop calling it ‘engineering SuDS,’ it’s ‘designing SuDS.’ Like Clive Woodward’s approach in England’s rugby world cup win in 2003, it’s ‘every one percent that you can add in,’ whatever you can add in, it’s going to be better in the long term. Charlotte Markey, Polypipe Civils
and Green Urbanisation – It’s about how you manage an entire system, it’s helping people transform their practice through managing those complex systems, but they’re not as diffi cult as we think. It’s just having that system approach – if you change something early on, it’s going to have a knock-on eff ect on something else, and we just need to know where we make the changes and how we challenge them.
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