Ridgistorm-XL - the latest innovative solution to SUDS...
Transcript of Ridgistorm-XL - the latest innovative solution to SUDS...
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Building regulations and legislative guidance now
require Architects, Consulting Engineers, Contractors
and Developers to seek out alternative ways to
manage and control surface water run-off from a
developed site. Ridgistorm-XL offers an effective
and adaptable solution to this issue, without
impacting on development footprint.
Combined with the technical expertise, knowledge and support of Polypipe WMS,
Ridgistorm-XL is designed as a bespoke application for each project and offers the
most advanced large diameter plastic pipe solution available in the UK.
Ridgistorm-XL - the latest innovative solution to SUDS and stormwater management
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Products and Solutions 2A
Page
Pipe Profiles and Key Benefits 2A 24 - 25
Unique Pipe Stiffness 2A 26 - 27
Bespoke Design, Fittings, Manholes and Applications 2A 28 - 29
Unique Electro-Fusion Jointing System 2A 30 - 31
Frequently Asked Questions 2A 32 - 33
Case Histories 2A 34 - 37
Products and Solutions Ridgistorm-XL Contents
Ridgistorm-XL an innovative pipe solution
Ridgistorm-XL is the latest innovative solution to SUDS and stormwater
management applications. With a range of large diameter pipes from 750mm up
to 2100mm plus the design and product technology features, it offers an effective
and adaptable solution, without impacting on the development footprint.
Bespoke pipe profile providing individual stiffness class
Ridgistorm-XL can be engineered to suit any application. By analysing the site
conditions and installation parameters, our design engineers can create a solution
with the appropriate profile strength and stiffness that is neither over nor under
engineered, thus saving material cost. Our production flexibility allows pipe
strength to be produced at varying stiffness classes to meet the design
requirements of a project, without the need to step-up pipe specification.
750mm 900mm 1050mm 1200mm 1500mm
Ridgistorm-XL - the most advanced large diameter plastic pipe solution
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The Ridgistorm-XL Technical Manual is available to
download at www.polypipewms.co.uk/downloads
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Products and Solutions 2A
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Exceptional leak tightness
Ridgistorm-XL is designed as a flexible structure to minimise the
effects of ground movement and deformation and prevent leakage
from the pipeline or attenuation structure. Exceptional pipeline
integrity is achieved with Ridgistorm-XL due to the reduced number
of joints, therefore minimising the number of potential leakage
points and removing the risk of groundwater pollution.
Ridgistorm-XL versus rigid materials
Ridgistorm-XL offers a robust, durable and adaptable solution in
comparison to rigid materials such as concrete and steel. Due to its
longer lengths and lighter weight, Ridgistorm-XL can be 70% cheaper
to transport than equivalent size concrete pipes and can be handled
and stored much more safely on-site.
WRc Approval
Ridgistorm-XL and all pipe profile options, stiffness classes SN2 to SN8
and diameters from 750 to 2100mm are approved by WRc. The approval
also extends to all work carried out by Polypipe’s in-house Fabrications
Department, the design software used to engineer the product
(for SN1 - SN8) and Ridgistorm-XL’s unique and patented electro-fusion
jointing method, which covers the tensile strength of each joint, the
jointing method and Polypipe’s installation manual and guidance.
1800mm 2100mm
PT/193/1102
BBA BRITISHBOARD OFAGRÉMENT
CERTIFICATE No. 10/H159
Key benefits
• Ideal for use as large-scale
attenuation system
• Fabricated tanks to any size
• Light weight for ease of
handling and installation
combined with high stiffness
and durability
• 100% recyclable
• Strong yet flexible design
• Able to withstand ground
movement without leakage
• WRc Approved
• BBA Approved*
• Superior hydraulic
performance achieved
through smooth bore
• Up to 2100mm diameter
• Durable materials
• Excellent resistance to
sulphate and chemical attack
• Longer pipe lengths for
improved pipeline integrity
and fewer joints
• Unique patented
electro-fusion jointing system
• Excellent load bearing
capability
• Approved by most water
companies
*750mm and 900mm as a sealed system
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Individual pipe profiles
Following many years of development, structured wall pipe technology has
been designed and engineered to maximise the strength of the pipeline.
Utilising the latest manufacturing technology and unique, state of the art
software enables Polypipe WMS to create unique profile designs to match
customers’ site requirements. Pipe profile designs can be adapted to maximise
strength and minimise use of material within the pipeline, which improves
pipeline performance and provides a value engineered solution.
Our bespoke range of profiles are integral to the strength and performance
of the pipeline. Optimised wall thickness and pipe profile design ensures that
the pipeline can cope with both external and internal pressures and any
subsequent deformation.
Ridgistorm-XL is designed as a flexible structure to withstand point loading
and ground movement once installed.
PR profile
Pipes produced with a PR profile
achieve high stiffness with relatively
low weight. This is a common pipe
profile for use in sewer and surface
water drainage applications.
VW profile
Profile type VW enables the
production of a solid pipe with a
smooth inner and outer surface.
These pipes can be produced with
a wall thickness of 5mm to 80mm.
LIGHT LOADING
Ridgistorm-XL - unique pipe stiffness providing flexible and variable loading specifications
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Products and Solutions 2A
This profile option has a smooth
inner and outer surface, including
internal profile to one layer. High
stiffness is achieved through the SQ
profile, making it ideal for extremely
high loads or larger diameters.
SQ profile
SQ2 offers the same benefits as the
single-layer SQ profile, yet it can be
produced with additional profile
layers for added ring stiffness.
SQ2 profile
In addition to the PR profile, the
Olympia profile option can achieve
greater pipeline stiffness with a
comparatively low weight.
Olympia profile
HEAVY LOADING
Polypipe WMS is unique in its ability to produce large diameter pipe and attenuation
solutions to match your exact requirements and site conditions. The flexibility of our
manufacturing process enables you to specify exact stiffness requirements and utilise
a value engineered solution that is neither under nor over specified.
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Bespoke project design
Ridgistorm-XL is designed as a bespoke solution to suit
each individual project. Our team of Design Engineers
and Drainage Specialists utilise the latest design and
manufacturing techniques to engineer a drainage
scheme to specific requirements. This flexibility enables
us to design-in required elements such as inspection
chambers at determined intervals and manhole access.
Ridgistorm-XL fittings
Utilising the skills of our in-house Fabrications Team we
can offer customers a complete range of bespoke
fittings, reducers, bends and attachments to the standard
Ridgistorm-XL pipe. Our bespoke fittings also enable the
Ridgistorm-XL system to be connected to a variety of
other applications, including concrete chambers and steel
carriage pipes. Reducers and bespoke bends also
facilitate the integration of Ridgistorm-XL into existing
drainage networks.
Large diameter manholes
Ridgistorm-XL pipe can be used in the construction
of bespoke large diameter manholes for use in both
surface water and foul sewer applications.
The Ridgistorm-XL range can also be manufactured
with integral manhole access to offer a complete
pipeline solution with maintenance access.
Bespoke and off-set manholes
The flexibility and adaptability of the Ridgistorm-XL
system, alongside the experience and capability of our
in-house Fabrications Team enables us to design and
manufacture bespoke manholes to meet site
requirements. Off-set manholes can be integrated into
a Ridgistorm-XL pipeline or attenuation system to
provide easier maintenance access to the system.
This utilises a unique step feature within the
construction of the manhole to reduce the need for
direct access into the pipe with improved Health and
Safety benefits, particularly in foul sewers.
Ridgistorm-XL
Bespoke fabrication
Pre-cast manhole
Ridgistorm-XL - applications
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Products and Solutions 2A
Applications
With a range of diameters
from 750mm to 2100mm,
Ridgistorm-XL offers a
durable and engineered
solution to large-scale
attenuation and pipeline
requirements for use in:
• Surface water drainage
• Large-scale attenuation
structures
• Specialist pipeline
applications
• Foul sewers
• River diversions
and culverts
• Sea outfalls
• Rainwater HarvestingFilters in large diameter pipes Step irons or ladders
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Total flexibility
Polypipe WMS has designed the Ridgistorm-XL system to offer customers a range
of options. This flexible approach ensures that customers can take advantage of
systems designed and manufactured to their exact requirements and to project
specification. The range of jointing options available for Ridgistorm-XL offers
customers the greatest flexibility over other comparable systems.
Unique, patented electro-fusion jointing
Polypipe WMS offers the only large diameter plastic pipe solution with integral
electro-fusion jointing. Electro-fusion wire is connected to the socket end of
the pipe during manufacture and supplied with a unique barcode containing
the settings and installation parameters for the pipe.
Exceptional joint performance
Once the two connecting pipes have been brought together, internal and
external support rings are fitted to apply pressure to the seal during the
jointing process. The electro-fusion wire is then connected to an electrical
supply which joins the pipes together. Using the electro-fusion jointing
method, 100% seal tightness can be achieved to guarantee exceptional
joint and pipe performance.
Speedier jointing
In comparison with other large diameter systems, Ridgistorm-XL can be handled,
jointed and installed much quicker, resulting in time and cost savings on-site.
Insert support ring
Electro-fusion jointing
Barcode scan for jointing parameters
Ridgistorm-XL - advanced jointing system
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Products and Solutions 2A
Multiple jointing options
Ridgistorm-XL can be designed and manufactured to suit any jointing
requirement on-site. EPDM, internal-welds and flange connections can all be
achieved with the Ridgistorm-XL system, depending on the installation and
application requirements of the project.
Less joints, less leakage
Ridgistorm-XL is available in standard lengths of 6 metres. With less joints,
Ridgistorm-XL significantly reduces the potential for leakage. Ridgistorm-XL
offers flexibility in specifying a joint that is appropriate for the project.
Health & Safety benefits
Electro-fusion jointing offers improved Health and Safety benefits over
traditional jointing methods reducing the need to work within confined spaces.
On-site, Ridgistorm-XL can also be jointed at the side of the trench before
being craned into position, reducing Health and Safety risks during installation.
Installation
Ridgistorm-XL units are installed in the same tried and tested way as twin-wall
flexible pipe systems. Ridgistorm-XL units are suitable for installations under car
park areas or roads. Separators are required only in high risk areas with
sustainable drainage systems. Consult Polypipe WMS Technical Team for
further advice.
Maintenance
Properly designed Ridgistorm-XL attenuation systems, incorporating suitable
catchpits, require no maintenance other than the removal of silt and leaves
from the catchpit, which may be done easily by on-site maintenance staff.
Placing next pipe in position
Release external compression chain
Ridgistorm-XL*
* Based on standard 6m length, other lengths available on request** Based on 2.5m length concrete pipe
Concrete**
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1. Can Ridgistorm-XL be recycled? Ridgistorm-XL is manufactured from polyethylene and is 100% recyclable
at the end of its useful life.
2. What quality standards does Ridgistorm-XL meet?
Ridgistorm-XL is approved by WRc (see page 25 for details) and is designed
to meet the performance requirements of the European sewer pipe
standard BS EN 13476. Ridgistorm-XL also meets the requirements of
DIN 16961. BBA approved for sizes 750mm and 900mm as a sealed system.
Approved by most water companies for capital works and section
104 schemes.
3. Do Ridgistorm-XL pipes deform under loading?
Ridgistorm-XL pipes are designed to deform. The deflection of flexible
pipes is controlled by the settlement of the soil. After settlement, traffic
and other loads do not affect pipe deflection. With rigid materials such as
concrete, traffic and other loads must be resisted by the pipe itself, making
the pipe prone to cracking. However with flexible pipes such as
Ridgistorm-XL the surrounding soil absorbs the stresses ensuring that the
pipeline remains intact.
4. What happens to the Ridgistorm-XL joints when deformation occurs?
The joints within the Ridgistorm-XL pipe system are tested for leakage
under deformation. This stringent test ensures that the joint remains water
tight even when pipes are deformed by 5% and the socket by 10%,
deformation far in excess of that encountered by the pipes in application.
5. Does Ridgistorm-XL have a proven track record? The technology used to produce Ridgistorm-XL pipes and fittings is tried
and trusted and has been in operation for 20 years. In fact, over 40
production lines are in operation worldwide including Germany, Italy
and Australia.
6. What is the Co-efficient of friction for the Ridgistorm-XL pipes? Ridgistorm-XL pipes benefit from a smooth inner wall, providing superior
hydraulic performance when compared with rigid materials such as clay
or concrete. See bar chart (left) for details.
Pipe deformation
inches
PE Clay Steel Ductile Concrete
3
2
1
0
Wall roughness
Ridgistorm-XL - frequently asked questions
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Products and Solutions 2A
7. Are Ridgistorm-XL pipes abrasion resistant?
Pipes manufactured from polyethylene (PE) or polypropylene (PP) offer far
greater abrasion resistance than alternative materials. The graph (right)
shows the abrasion curve of various pipe materials according to the results
of the Darmstadt procedure. This graph demonstrates the superior
performance of PE and PP pipes.
8. Are Ridgistorm-XL pipes UV resistant?
Yes, Ridgistorm-XL pipes are resistant to UV attack and can be safely stored
on-site without any damage or ageing effects. Ridgistorm-XL pipes may also
be suitable for some above ground applications.
9. What is the standard bedding detail for Ridgistorm-XL pipes?
Type S bedding detail is standard for the installation of the Ridgistorm-XL
system. However, by using the unique Easypipe software, we are able to
engineer alternative trench bed and surround details to ensure optimum
construction methods to suit each individual project.
10. Are Ridgistorm-XL pipes easy to handle and store on-site?
Yes, Ridgistorm-XL pipes can be handled by forklift without the need
for any additional equipment on-site. Ridgistorm-XL pipes can be
unloaded and transported to the trench by excavator which will already
be present on-site.
11. How should Ridgistorm-XL pipes be stored?
When storing Ridgistorm-XL pipes and fittings it is necessary to ensure that
they are stored on flat ground, free of stones or other sharp objects to
avoid any point loading on the pipes. It is also important to rotate each
pipe layer by 180 degrees so that the sockets of the upper layer are not
lying directly over the sockets of the lower layer. See diagram below.
Do not stack Ridgistorm-XL pipes more than four metres high. It is also
important to use wood bearing supports between the pipes to ensure even
load distribution and wooden chocks to prevent pipes from rolling. Please
carry out an appropriate Health and Safety risk assessment for your site.
2.0
abrasionin mm
concrete pipeconcrete pipecoated GFK pipe
Clay pipe
PVC pipe
PP or PE pipe
cycles
1.5
1.0
0.5
0 50 100 150 200 250 300 350 400 450
0.25
Abrasion resistance
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Working alongside the main contractor, Dawnus Construction and project
engineers Peter Brett Associates, Polypipe WMS has supplied and installed
72 metres of 1200mm diameter Ridgistorm-XL pipe along two separate runs.
Ridgistorm-XL’s patented electro-fusion jointing process achieved quicker and
safer installation in comparison with other large diameter pipe solutions and
guarantees 100% seal tightness for each joint. Ridgistorm-XL was specified for a
section of this diversion due to its inherent strength and cost effectiveness when
compared to traditional rigid materials. The system was installed in an enclosed
concrete structure and then covered with wet-cast concrete. This then enabled the
construction of a temporary road for heavy plant and vehicles to travel across the
watercourse, whilst allowing the re-routed water to flow through the pipeline.
Polypipe WMS completed a challenging river diversion project at the Ffos-y-Fran
Land Reclamation Scheme in Merthyr Tydfil, Wales using its Ridgistorm-XL
large diameter pipe system.
Ridgistorm-XL case historiesRiver diversion project using Ridgistorm-XL
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Products and Solutions 2A
Having proved that Ridgistorm-XL large diameter pipe system could achieve
significant savings on the whole-cost of the project, Polypipe WMS worked closely
with the contractor to design a 400 metre balanced attenuation tank with a storage
capacity of one million litres, using Ridgistorm-XL large diameter pipe in 1.8 metre
diameter to manage surface water run-off from all hard standing areas. In addition
to the attenuation tank, Polypipe WMS also designed and fabricated a bespoke
300,000 litre rainwater harvesting solution using Ridgistorm-XL pipe in
2.1 metre diameter, to re-use rainwater from the 6,000 square metre roof area
on-site. Alongside its full design and technical support service, Polypipe WMS
supplied a wide variety of bespoke fabrications for the non-standard elements of
the project, including bespoke 150mm stubs at intervals along the attenuation
structure to connect gullies from each cattle grid. The rainwater harvesting tank
also included a fabricated ‘T’ section that features an in-line leaf filter to prevent
debris from entering the tank.
A detailed cost analysis carried out by the main
contractor, on the cost-effectiveness of plastic
and concrete materials resulted in Polypipe WMS
re-engineering a bespoke SUDS solution for a new
livestock market.
Bespoke - Large diameter attenuation and rainwater harvesting solution for new livestock market
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Ridgistorm-XL - Electro-fusion joint delivers stormwater diversion for Gatwick Airport
Ridgistorm-XL was specified by the main contractor for its electro-fusion jointing
system. The existing storm drain needed to be relocated and the Ridgistorm-XL
pipeline installed prior to the piling work being carried out for the new building.
Concerns over the pipeline integrity as a result of the piling work were negated by
using Ridgistorm-XL. The patented electro-fusion jointing method guarantees
100% seal tightness within the pipeline and is the only large diameter plastic pipe
system in the UK to incorporate such technology.
Polypipe WMS supplied a bespoke large diameter pipeline solution
using Ridgistorm-XL for the construction of a new airside building at
Gatwick Airport’s North Terminal.
Ridgistorm-XL Large Diameter Pipe System Provides the Solution for Landfill Project
Using its patented and WRc approved pipe design software and a soil report provided by the main contractor, Polypipe
WMS determined a bespoke stiffness class for the Ridgistorm-XL discharge and collection pipe that was value-engineered
to meet the project specifications. Polypipe WMS engineered the solution based on the soil conditions, burial depth
and installation parameters and are the only manufacturer of large diameter plastic drainage pipe with this capability.
This enabled Polypipe WMS to optimise the amount of material used to manufacture the Ridgistorm-XL pipeline, which
in turn provided a more effective solution for the project. Polypipe WMS supplied over 600 metres of its Ridgistorm-XL
system in 1050mm diameter. This was installed around the perimeter of the site to manage surface water run-off from
the capped areas of the landfill. Sections of the Ridgistorm-XL pipe were also perforated to collect excess stormwater for
carriage through the discharge pipe. In addition to its Ridgistorm-XL large diameter pipe, Polypipe WMS also supplied
over 700 metres of 300, 450 and 600mm diameter Ridgisewer and Polysewer sewerage pipe.
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Products and Solutions 2A
Polypipe WMS re-engineers original specification for Northumbrian Water flood alleviation scheme based on Ridgistorm-XL’s proven performance and electro-fusion jointing.
Early involvement in a capital projects scheme in
Penshaw, County Durham for Northumbrian Water
enabled Polypipe WMS to work closely with consultant
engineers Mott MacDonald and supply its Ridgistorm-XL
large diameter pipe system. An alternative system was
originally specified but this was re-engineered after
Polypipe WMS demonstrated the performance capabilities
and electro-fusion jointing technology of the
Ridgistorm-XL system. 114 metres of Ridgistorm-XL pipe
in 1050mm diameter were supplied to the scheme, along
with 1050mm elbow joints and two large diameter
1800mm manholes fabricated at Polypipe WMS’s dedicated
facility in Loughborough - the largest fabrications
department for plastic drainage products in the UK.
Ridgistorm-XL’s electro-fusion jointing method was a
significant factor for Northumbrian Water, Mott
MacDonald and contractors Seymour Civil Engineering as
this eliminated the need for internal welding within the
pipework. Once on-site, the improved handling and
quicker installation of the Ridgistorm-XL system compared
to traditional rigid materials enabled Seymour to reduce
the overall construction programme by two weeks. In
addition to the design and technical support provided by
Polypipe WMS during the initial stages of the project,
Seymour’s on-site team were also trained on the
electro-fusion welding of the Ridgistorm-XL system to aid
in the rapid installation of the products. This offered
further Health and Safety benefits as the need for working
in confined spaces was reduced. This project marks the first
capital works scheme to use the Ridgistorm-XL large
diameter pipe system, with all parties working closely
together to trial the new technology. As a modern
alternative to traditional rigid materials that provides
unique factors such as electro-fusion jointing and bespoke,
site-specific design, Ridgistorm-XL can deliver tangible
benefits in terms of reduced health and safety risks,
improved pipeline performance through joint integrity
and an overall reduction in the construction programme.
Bespoke - Ridgistorm-XL Large Diameter Pipe system