Dear David, dear list members,
David, thanks a lot for your contribution regarding Sustainable Urban
Drainage
Systems (SUDS).
In case that anyone is interested in getting in touch with David by
phone or fax,
you may be interested in knowing that the UK telephone code is +44...,
i.e.
David Singleton
Group Manager
Highways West
Tel +44 1623 443939
Fax +44 1623 551930
(listmembers: please use the international form of telephone numbers to
assist your overseas colleagues to get in touch with you).
Best regards from Magdeburg in the Elbe valley
Manfred
(co-owner "urban-drainage" list)
David Singleton schrieb:
> Many thanks to all list members who gave me information and shared
> their experiences.The basic message is not to enter SUDS lightly,
> especially if trying to incorporate it into an existing urban area.It
> has to be carefully designed in co-operation with the local residents,
> their elected representatives, local owners of land and a host of
> agencies with a vested interest.Safety, whether real or perceived, is
> reported as a major constraint.
>
> There are two sorts of conditions that need to be considered, the
> heavy, concentrated downpour and the longer periods of steady rain.The
> former is too fast and heavy for the ground to absorb and the latter
> saturates the ground, which then cannot absorb further water.Pollution
> and silt are also major concerns so that covering to polluted areas
> and traps need to be considered.Maintenance of the system is of
> paramount importance and not easily or cheaply achieved.
>
> A worrying aspect for me is that many correspondents recommended an
> overflow arrangement, 'just in case'.In my own situation, this is
> difficult if not impossible.The ‘valley’ leads to a railway cutting
> and bridge so that the water cannot be allowed to reach that far.Some
> international correspondents faced with a ‘no watercourse outlet’
> situation indicated that vast tracts of land were required to store
> the water for eventual absorption or evaporation.
>
> The apparent changes in the climate in the UK, with frequent heavy
> summer storms and long periods of rainfall in the winter, suggest that
> the introduction of SUDS in existing urban areas is vital to prevent
> the flooding of low lying areas.Nevertheless, the same weather
> conditions render the safe design of SUDS even more problematical.
>
> Finally, if anyone can shine any light on the problem of restraining
> run-off from agricultural land, I would be grateful.A local farmer has
> introduced pigs into fields that slope towards a public highway.The
> run-off has been horrific with water and silt flooding the road and
> off the road into private property.Recently the pigs have been moved
> to a new location where the run-off is still causing major problems
> and the field ploughed level and drilled for winter wheat.During long
> periods of rain, water cascades down the field, causing the creation
> of deep gullies, and into the highway causing danger to road
> users. The farmer claims act of God and the right to discharge water
> from higher ground.Recent law cases tend to support the farmer’s
> contention.
>
> Once again, thanks to those who have helped and I look forward to any
> advice about the agricultural issue – if it is appropriate for an
> urban drainage debate.
>
> David Singleton
> Group Manager
> Highways West
> Tel 01623 443939
> Fax 01623 551930
>
>
>
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> "urn:schemas-microsoft-com:office:office" />
>
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Dr. Manfred Schuetze
ifak - Institut fuer Automation und Kommunikation e.V. Magdeburg
Steinfeldstr. 3, D-39179 Barleben, Germany
Tel.: +49-39203-81045 FAX: +49-39203-81100 E-Mail: [log in to unmask]
Web: www.ifak.fhg.de
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