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THE MAGAZINE FOR THE DRAINAGE,WATER &WASTEWATER INDUSTRIES


EVENTS NEWS


that youmust consider SuDS at the design stage if youwant to achieve the desired aesthetic, resilience and biodiversity outcomes,”explained Sean Robinson, Polypipe Civils’s SpecificationDirector,who hosted the event.“You can’t simply plan a development and then tack on a SuDS element as an afterthought.” Matt Bradley,National Specification Manager, Civils & Landscape, opened proceedingswith an explanation of how Polypipe’s green urbanisation approach can ‘hardwire green assets into the SuDS solution’. He also emphasised the importance of collaboration throughout the design process. “The benefits of green urbanisation can’t be realised by one body on its own,”he said. “You need early engagement between stakeholders andmanufacturers because cooperation is the key to success.” The notion that approvals fromthe SuDS


Approval Body (SAB) added time and cost to development got short shrift fromIan Titherington, SABOfficer for Cardiff City Council. “It’s an urbanmyth,”he declared. “If you get the SAB officers engaged early in the design then itwill be cheaper and faster to design, get approved and get built.” Both Ian and the next speaker, Kathryn Williams of KewPlanning, pointed out that this legislation covers virtually all construction – even down to a residential extension or patio. Kathryn argued that not onlywas this far toowide-ranging but also thewhole process needed amending to be fair andworkable in order to promotemore SuDS schemes. For his part the third speaker, architectNoel Isherwood, sawthe newrequirement as encouraging a rethink in housing development design,with SuDS helping to mitigate the dominance that highways have


Manchester’smessage of collaboration


PolypipeCivils&GreenUrbanisation’s inauguralRealisingResiliencee-Roadshow eventonWednesday17thJune,which attractedover80delegates, shonea lighton GreaterManchester andthegreat strides it is takingtowardsembeddinggreeninfrastructure throughout theregion. “Oneof the strongmessages toemerge fromthe diverse line-upof speakerswas the importanceof collaborationbetweenawide rangeof stakeholders indeliveringgreenurbanisation. One simply can’t just look toecologists, landscape architects anddesigners;utility companies, private investors anddata analysts are allpartof a successfulmix,”explainedSeanRobinson, SpecificationDirector,whohostedthe event. NicholasWright, SpecificationManager,City& LandscapePolypipeCivils&GreenUrbanisation, openedthe eventwitha lookback at Manchester’sAngelGardens.Completedin2019, thisprojectboasts a largePermavoid, shallow invert attenuationtank situatedonthepodium whichlimitedthe impact tothe surrounding drainage infrastructure.He alsoexplainedhowif thisprojectweredesignedtoday the additionof moregreenassets andsmart systems – like the ones installedonPolypipe’sownaward-winning, blue/greenroof inAylesford– couldhave boostedthisdevelopment’s resilience further. SophieTucker,UnitedUtilities’Sustainable Drainage SystemManager, spokeofher organisation’s role inencouragingthe installation


FOLLOW US


ofblue/greenroofs intheNorthWest,with retrofit aparticular focus.UnitedUtilities is incentivisingthiswithsignificant reductions in sewage charges tonon-householdcustomers whodeploy SuDS suchasblue/greenroofs. JohnRoberts,PrincipalCivil Engineer at specialist consultancy EnvironmentalProtectionGroup providedaninsight intothedesignof cascade blue roof systems. Suchset-ups addevenmore resilienceby reducingdischarge intosewers and reducingtheneedforpotablewaterby allowing themovementofwaterbetweenroof areas and attenuationzones andmakingthiswater available forpassive irrigationtosupportgreen assets. Samuel Evans,Headof EnvironmentPolicy, at the


always had. “Incorporating green urbanisation into a housing schememeans that densities can be higher butwithout sacrificing amenity. Interstitial areas can be transformed as placeswhere people canmeet and spend time.No longer are amenity areas just bits of land that are left over at the end of the design,”he said. “ThebeautyofSuDSis thathighwaysareno longer themajordriver fordevelopments, sowe canexplorebetterwaysofdesigningthebuilt environment. Itbecomesallabout placemaking, rather thanthecar.” Polypipe’snextRealisingResiliencee-Roadshow on30JuneexaminesGreenUrbanisationinthe contextofBirminghamandisentitledPlanning andDevelopment toEnhanceHealthand Wellbeing.RealisingResilienceevents centred onLondonandScotlandfollowon7Julyand14 July respectively.


GreaterManchesterCombinedAuthority, outlinedhowthe authority isworkingto encourageprivate investment innatural capital. Excitingplans are already afoot toformaportfolio of retrofitprojects,where the savings insewer chargesofferedbyUnitedUtilities couldprovide a returnoninvestment forwould-be funders. The final speaker, FrancisHesketh,director at the EnvironmentalPartnership, explainedthe valueof ecosystemservices.Bothhe andEvans referenced GreaterManchester’s impressive mappinggm.org.uk resourcewhichnowcontains anoverlayprovidinga colour-codedEcosystem Services scorewhichwillhelpinformplanning andbiodiversitynetgaingoals. Polypipe’snext e-roadshow,whichwill tell the storyofWales’SuDS journey, ison23 June and features speakers fromCardiffCityCouncil,Kew PlanningandNoel IsherwoodArchitects. RealisingResilience events centredon BirminghamandLondonfollowon30 June and 7 July, resrpectively.


Themove to a shallowinvert Pemavoid attenuation solution on AngelGardens,Manchester, allowed the creation of a two storey, 146 space basement car park.


August 2020 | drain TRADER 25


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