Charcon Permavoid from Polypipe WMS Water Management Solutions for shallow applications CI/SfB (90.4)+(52.5) Xy May 2010
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Charcon Permavoid from Polypipe
WMS
Water Management Solutionsfor shallow applications
CI/SfB (90.4)+(52.5) Xy
May 2010
Charcon Permavoid from Polypipe
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Charcon is a leading manufacturer of hard
landscaping systems, offering a wide range
of innovative products including sustainable
paving and kerb products and an unparalleled
range of integrated SUDS solutions.
Aggregate Industries provides a peerless
combination of aggregates, asphalts, ready
mixed concrete and other surfacings, contracting
capacity and expertise nationwide for a wide
range of SUDS and other applications.
Polypipe is one of Europe’s largest and most innovative
manufacturers of plastic building products and systems for
infrastructure, utilities, housing, commercial, industrial and
retail sectors, with an enviable and proven reputation for a
broad product range, reliability and value.
The effect on water levels from continued development across urban, suburban
and brownfield sites is one of the biggest challenges facing the construction
industry today. It’s one that requires sustained and co-ordinated action by
government, local authorities, specifiers, engineers and suppliers alike.
Charcon Permavoid from Polypipe
Combining experience and expertise in sustainable drainage
That’s why Polypipe Water Management Solutions (WMS) and
Charcon, two of the biggest names in sustainable urban drainage
systems, have joined forces to provide an exciting solution for
shallow applications - Charcon Permavoid from Polypipe.
This addition to the Polypipe WMS portfolio creates the
most comprehensive range of specialist products to help
reduce the risk of flooding and pollution and preserve our
most precious natural resource.
SHARED SURFACE, MEWS, COURTS, CUL-DE-SACS AND HOME ZONES
DRIVEWAYS RESIDENTIAL ESTATE AND ACCESS ROADS
(MAX 20MPH)
PEDESTRIAN AREAS
FOOTPATHS
SPORTS PITCHES RESIDENTIAL DISTRIBUTOR AND COLLECTOR ROADS
(MAX 30MPH)
LORRY PARKS INDUSTRIAL ESTATE ROADS CAR PARKS ROOFS BASEMENT PODIUM DECKS RAINWATER HARVESTING
Since 2002, UK building regulations have demanded adequate systems
for preventing the immediate run-off into the sewer network of rainwater
from roofs and paved areas.
SUDS Explained
SUDSexplained
SUDS, or sustainable drainage systems,
allow specifiers and developers to meet those
regulations by offering a variety of alternative
solutions that store water for re-use or channel
it into soakaway or attenuation systems.
Now, Polypipe provides you with an alternative
solution for shallow applications to help you
to reduce flood potential and pollution by easing
demand on existing drainage, groundwater
processes and watercourses.
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SHARED SURFACE, MEWS, COURTS, CUL-DE-SACS AND HOME ZONES
DRIVEWAYS RESIDENTIAL ESTATE AND ACCESS ROADS
(MAX 20MPH)
PEDESTRIAN AREAS
FOOTPATHS
SPORTS PITCHES RESIDENTIAL DISTRIBUTOR AND COLLECTOR ROADS
(MAX 30MPH)
LORRY PARKS INDUSTRIAL ESTATE ROADS CAR PARKS ROOFS BASEMENT PODIUM DECKS RAINWATER HARVESTING
Infiltration and run off
As land is developed, its infiltration
potential falls dramatically. Compacted
and impermeable surfaces can reduce
the rate and volume at which surface
water is drawn into the ground by as
much as 95%, increasing run-off and
often exceeding the capacity for sewers
and natural watercourses to cope.
Pollution
Large area hard surfaces like roadways,
car parks and service station forecourts
increase environmental contamination by
allowing petrochemical pollutants to be
‘washed’ into water catchment areas in
surface run-off.
Green and soft landscaping
Swales, ponds, marshes and other forms
of wetland are important water trapment
features and good SUDS practice will
integrate them, alongside engineered
below ground solutions, as part of a fully
considered sustainable drainage solution.
Pervious and impermeable surface provision
Hard standing surfaces like car parks can be made pervious with the application
of porous paving products that can be incorporated into an overall SUDS solution.
If impermeable surfaces are unavoidable, then source control systems following
SUDS principles can be used to channel and retard run-off.
Where the Charcon Permavoid System from Polypipe can make a difference
The Permavoid Pavement System
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Flood risk potential
Increased development and increasingly severe ‘weather events’ have seen a marked
rise in flooding in the UK, with immediate and rapid runoff into local watercourses,
leading to damage, erosion and loss of life sometimes many miles downstream.
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Distribution of loadsthrough pavementPressure due to wheel loads
Surfacing
Sand andaggregate layer
Permavoid subbasereplacement
Subgrade
How the system can make a difference
The Permavoid Pavement System
Permavoid is a geocellular system designed to provide shallow ground
water storage, attenuation or infiltration within a pavement structure.
It is used in place of a traditional sub-base.
With a 95% void ratio, Permavoid
is a highly efficient modular SUDS
solution that can be built up to a total
void volume depending on projected run
off values. Its unique jointing mechanism
means it has exceptional strength,
providing an interlocked ‘raft’ that will
support structural loads across the most
heavily trafficked areas.
Permavoid can be used directly below
Infilta block paving or Drain Asphalt
surfaces, or below impermeable top
surfaces in conjunction with a source
control system such as Permachannel.
For more information visit
www.polypipewms.co.uk
• 95% void ratio
• Modular unit
• Lightweight and robust
• 100% recyclable
• Shallower applications reduce excavation costs
• Quick and easy to install
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System Elements
Infilta The permeable block paving system
Permavoid Shallow modular cell system
Permachannel Innovative channel system
Interlocking, high strength sub-base
replacement. For use below Infilta,
permeable block paving or porous
asphalt surfaces.
Infilta is a rectangular block paving
system that allows infiltration of surface
water into underlying SUDS storage
structures. It incorporates 5mm spacers
to provide sufficient drainage between
blocks and is made from an open graded
sub-base that provides further void
volume for storing run-off. A tough,
durable paving surface, Infilta is
available in 8 colours.
A proven source control collection
system that also acts as a silt and oil
interceptor and treatment solution.
Permachannel is designed to be laid
with little or no gradient to ‘still’ run-off
and encourage silt deposition within
the channel. A weir and baffle outlet
separates oil and prevents silt deposits
entering the rest of the SUDS system.
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System Elements
Permafilter Geotextile Hydrocarbon pollution treatment
Permafilter Geomembrane Water tight system
Permavoid Biomat Additional oil retention
For use within Permavoid units,
Permavoid Biomat provides floating
pollution control. It consists of a low
density, high strength buoyant plastic
grid that traps and retains any residual
or emulsified oils that may be present
within the surface water. Permavoid
Biomat also provides a habitat for
microbes that digest and breakdown
oil deposits.
A non-woven, dimpled and
needle-punched geotextile that
retains hydrocarbon deposits while
allowing clean water to pass through.
Entrapped hydrocarbons from petrol
and oil are then biodegraded by
naturally occurring micro-organisms
in a self-cleansing mechanism.
The Permafilter Geomembrane is
a heavy-duty polypropylene membrane
that combines excellent chemical
resistance with robust performance,
even on non-smooth surfaces. It creates
a water tight seal that minimises the risk
of sub-grade softening in a wide range
of applications.
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How the Charcon System can make a difference
Unrivalled expertise and service
Polypipe WMS are a dedicated team of SUDS Technical Consultants and Civil Engineers
whose know-how and support will help you specify and implement efficient, economical
solutions that meet every customer and legislative requirement.
Technical design service
Every SUDS system we develop is to
a bespoke specification to meet the
individual needs of each project.
It starts with a review of site data and
the requirements for a complete water
management drainage solution, followed
by an outline conceptual design.
Then, it passes to the AutoCAD
stage, setting out the precise scheme
arrangement and typical configuration.
Finally, the detailed scheme design
provides hydraulic and structural
calculations for submission to Engineers
and Contractors, along with precise
engineering drawings for layout
and construction.
On-site service support
A full on-site project co-ordination service
is available to help in the implementation
of Permavoid SUDS plans. A dedicated
Project Co-ordinator will be assigned
to your development to advise on the
integration and installation of your
chosen SUDS plan and to co-ordinate
delivery to site.
You can also take advantage of our SUDS
technical helpline for a rapid response to
all enquiries. Please call 01509 615100.
You can call on our specialist knowledge at every stage in the process, from initial design consultation, through to groundworks,
installation and beyond. By providing access to the latest SUDS technology and up to the minute, expert opinion, we are providing
specifiers, construction companies, policy makers and end users with the means to make a real, sustained difference to the future
of water management in the UK.
The design factors
• Hydraulic and Structural Calculations
• Project Planning and Guidance
• Technical Design Service
• On-site Service Support
The Permavoid Pavement System
Planning and project guidance
The complete range of sustainable drainage solutions from Polypipe WMS has
been developed as an enhanced response to planning requirements for managing
flood risk in civil engineering projects. The most important regulations and their
implications for planners and specifiers, are set out here.
England Town and Country Planning
[Assessment of Environmental Effects]
Regulations, 1999
• Recommendsmajordevelopments
be subject to an Environmental
Impact Assessment
• IdentifiesSUDSasausefulway
of mitigating adverse impact
Wales National Assembly for Wales
Technical Advice Note 15
• Requireslocalplanningauthorities
to consider impact of surface
water runoff
Building Regulations Approved
Document H 2002
• Specifiespreferredsurfacewater
discharge methods as:
1) Infiltration
2) Natural Water Course
3) Piped Drainage System
Scotland The Water Environment and
Water Services (Scotland) Act, 2003
• Prohibitsunauthorisedpolluting
discharge into water environment
• SUDStobeakeytoolinmeeting
Scottish Environmental Protection
Agency (SEPA) targets
SEPA policy no 15 Regulation
of Urban Drainage
• PromoteSUDSasthepreferred
solution for surface water drainage
in all new developments
SEPA Groundwater Protection
Policy for Scotland
• Guidelinesonappropriate
infiltration systems and whether
treatment is required before
discharge
• Recommendssourcecontrolsuch
as permeable paving over
soakaway systems
Northern Ireland EHS Policy and Practice for the
Protection of Groundwater in
Northern Ireland
• Guidelinesonappropriateinfiltration
systems and whether treatment is
required before discharge
The Groundwater Regulations
(Northern Ireland) 1998
• ImplementsEECGroundwater
Directive to control discharge of List I
and II substances to groundwater
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How the Charcon System can make a difference
Charcon Permavoid from Polypipe - The Benefits
Brownfield developments
Not all brownfield sites are
contaminated, but even on those that
are, SUDS is still an option providing
care is taken during excavation to
avoid bringing pollution to the surface.
Indeed, shallow SUDS are preferable
to conventional drainage in these
circumstances because the likelihood of
disturbing deep contamination during
their installation is lower.
Reduced depth and excavation volume
Shallow application SUDS are quicker,
less costly and easier to install and
maintain. They also have a reduced
environmental impact because they
require fewer trips by road to transport
infill and rubble to and from the site.
Easy maintenance
A shallow installation makes
inspection and repair of the systems
easier and cheaper.
Oil and hydrocarbon interception at source
Products such as Permafilter Geotextile
and Permachannel provide effective
‘passive’ measures to trap and process
pollutants before they can enter natural
water courses.
Recyclable materials
All Permavoid products are manufactured
using recyclable materials to help you
meet legislative guidelines on the
environment,yourownCSRobligations
and those of your customer.
Sustainability
The need for sustainable drainage
systems to prevent and reverse the
risk of flooding in developed areas has
never been more crucial. Polypipe WMS
gives you all the products, expertise and
support you need to play your part in
making that happen.
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Associated products
Rainwater Harvesting
RainstreamfromPolypipeisarangeofhighlyeffectivesolutionsforthestorage,
filtration and re-use of rainwater. All products have been developed and
manufactured to offer the most cost effective solution to maximising the re-use of
rainwater in the UK. Polypipe WMS are committed to designing solutions calculated
to UK rainfall and weather patterns. Polypipe WMS have a clear knowledge of the
environmental issues and government legislation surrounding rainwater harvesting
throughinvolvementwiththeUKRainwaterHarvestingAssociationand
British Water.
Attenuation and Soakaway
Polypipe WMS provides a variety of engineered pipeline or modular cell based
solutionsforattenuationorsoakaway.Ridgistorm-XLisalargediameterpipe
solution and through unique manufacturing facilities, can be offered in a choice of
differentpipestiffnesstosuittheprojectrequirements.Ridgistorm-XLcanalsobe
adapted into large diameter manholes and catchpits. Polystorm Modular Cells, when
deeper applications are required, are available in three types for different
applications; non-trafficked, trafficked and heavy trafficked. The cells can also be
integrated to provide a hybrid value engineered solution.
Surface Water Drainage
Ridgidrainisthemarketleadingstructuredwalldrainagebrandandisthecomplete
technical and commercial answer to all non-pressure surface and sub-surface water
drainageapplications.Ridgidrainpipehasbeeninstalledonthousandsofprojects
including: highways, rail and airport infrastructure.
Sewerage Systems
PolysewerandRidgisewermakethelargestrangeofstructuredwallpipesystems
KitemarkedtoW1S4-35-01.RidgiseweristheonlyKitemarkedstructuredwall
alternative to concrete pipes.
Cable Protection System
The Polypipe cable protection range is independently certified to British and
European standards where required. With a proven tried and tested range of over
1000 individual products and sizes to select from, groundworkers and contractors
have a complete cable protection range for almost any application.
The Permavoid Pavement System
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WMS
Polypipe Civils
Charnwood Business Park
NorthRoad
Loughborough
Leicestershire LE11 1LE
Tel: 01509 615100
Fax: 01509 610215
Email: [email protected]
www.polypipewms.co.uk
Charcon Permavoid from Polypipe
FSC logoand statement
Printed on 100% recyclable chlorine-free paper.All inks used on this brochure are vegetable based.
www.polypipe.com
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