1.13 sustainable drainage – a uk perspective (p.shaffer)
TRANSCRIPT
Sustainable drainage – a UK perspective
Paul Shaffer, CIRIA
Elvetham Heath, Hampshire
www.ciria.org | www.susdrain.org
Introduction
• CIRIA
• SuDS and floods in the UK
• CIRIA & surface water
management
Why
• Drivers for SuDS
• How do we change
• Opportunities
• Challenges
How
• The SuDS manual
• Valuing benefits
• Winning hearts and minds
Overview
Introduction
Elvetham Heath, Hampshire
• Founded 1960
• Independent / collaborative
approach
• Member-based, around 500
corporate members
• Focus on performance
improvement
• Cross sector / cross
disciplinary
CIRIA
www.ciria.org | www.susdrain.org
1994 1998 2002 2006 2010 2014
SuDS and floods
CIRIA & surface water management
• Designing for exceedance (2006)
• The SuDS manual (2007)
• Planning for SuDS - making it
happen (2010)
• Retrofitting to manage surface
water (2012)
• Creating water sensitive
places - scoping the potential
for WSUD in the UK (2013)
• Managing urban flooding from
heavy rainfall – encouraging
the design for exceedance (2014)
Why SuDS & why provide guidance
Lamb Drove, Cambridgeshire
www.ciria.org | www.susdrain.org
Why change?
Flooding – people
and property
Legislation and
planning (maybe)
Water quality of urban
watercourses
Connecting with
water (on the surface)
Liveability – quality of
life
Support growth –
population & economy
www.ciria.org | www.susdrain.org
How do we change
Sustainable Drainage Systems objectives manage the
impacts from development on the quantity and quality of
runoff and provide amenity and biodiversity opportunities.
Manage flood risk
Manage diffuse
pollution
Provide amenity
Enhance biodiversity
Multiple
benefits
www.ciria.org | www.susdrain.org
Opportunities
SuDS
Urban renewal
Health & wellbeing
Sustainable movement
Landscape protection
Biodiversity
Land quality
Air quality
Water quality
Flood risk mgt
Climate change
Soil conservation
& food
Local
Government Act
Sustainable Communities Act
Local Government & Public Involvement in
Health Act Environmental Protection Act
Local Government Act
Countryside &
Rights of Way Act
National Parks
& Access to the
Countryside Act
European Landscape Convention
Natural Environment & Rural Communities Act
Conservation (Natural
Habitats) Regulations
Environmental Damage
Regulations Environmental Protection Act
Clean Air Act
Climate Change
Act
Greenhouse Gas
Emissions Trading
Scheme Regulations
Floods Directive
Flood & Water
Management
Act
Urban Waste Water Treatment
Directive
Groundwater Directive (& Regs)
Water Framework Directive
Water Environment Regulations
Ambient Air Quality and Cleaner Air
Directive
www.ciria.org | www.susdrain.org
SuDS is an approach, not a component or product
Mimic natural drainage from a site
Where possible, manage water on the surface
Manage runoff close to its source
Make the best use of water
Provide multiple benefits
Robert Bray Associates
The SuDS philosophy
www.ciria.org | www.susdrain.org
SuDS components
Challenges
Photo: Luke Greysmith
• Awareness and understanding
– Perception of SuDS
– Risk aversion (new and H&S)
• Technical considerations
– High density & retrofit
– Ground conditions
– Concerns of performance
• Development and planning
– Perception of costs
– Land take
• Adoption and maintenance
• Focus on costs (not benefits)...
Early and effective engagement
with the right design team will
overcome these challenges
www.ciria.org | www.susdrain.org
Photo: D Gedge
How
Horniman museum, London
The SuDS manual
• Comprehensive update/re-write
• 33 chapters structured:
– Philosophy & approach
– Applying the approach
– Technical detail
– Supporting guidance
• Key themes covering
– Delivery of four design objectives
– Overcoming site challenges
– Delivering SuDS in urban areas
– Integration
• Available in summer 2015
BeST
• Benefits of SuDS Tool
• Approach to assessing benefits
• Support practitioners to value the
quantity and monetary benefit
• Looking at monetising 14 benefits
• Compare drainage options
• Support funding partnerships
• Available in Spring 2015
• Disseminating good
practice and training
• Susdrain.org – Website
– Blogs
– Case studies
– Animations and infographics
– Seminars and videos
• Training for all practitioners – SuDS introduction
– SuDS design
– Facilitating delivery
– In house training for local
authorities
Thameslink Programme
http://chaos-its-not-just-a-theory.com/page/2
Winning hearts and minds
www.ciria.org | www.susdrain.org
The power of integration
CONNECT
Water management
and planning
COLLABORATE
across other disciplines
CREATE
Great solutions for
great places & spaces
Good SuDS and
Water Sensitive
Urban Design + + =
www.ciria.org | www.susdrain.org
Thank you
Paul Shaffer, CIRIA
www.susdrain.org
T: @sudsulike