Surface Drainage, Stormwater Management, SuDs, Permeable Paving and Channel Drainage by ESI

EXTERNAL DRAINAGE AND SURFACE WORKS WATER MANAGEMENT Interceptors

Pipes and component chambers

53-55

Headwalls and outfalls

56-57

Flow control

58-59

Stormwater management

60-65

Permeable paving systems

67-76

Channel drainage systems

77-82

EXTERNAL WORKS ONLINE

For detailed information supported by case studies, downloads and tools to help you make faster and better decisions ...

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52 INTERCEPTORS

EXTERNAL WORKS ACO Water Management – a division of ACO Technologies Interceptors

Contact Head office t: 01462 816666 f: 01462 815895 technologies@aco.co.uk Web www.aco.co.uk Address ACO Water Management – a division of ACO Technologies plc ACO Business Park Hitchin Road Shefford SG17 5TE Accreditation ISO 9001: 2015 ISO 14001:2015 CPD Surface water management professional development t: 01462 810254 ukprofessionaldevelopment@aco.co.uk

Additional entries Stormwater control ‰ 64 Surface water management ‰ 80 Building + Landscape drainage ‰ 81

ACO Water Management recognises that protection of the environment is a crucial part of an integrated approach to modern surface water management and sustainable drainage systems (SuDS). Contamination of ground water and watercourses from hydrocarbons (petrol, diesel and engine oil) carried by surface water run-off poses serious threats to the environment. Two advanced systems are manufactured to address these challenges. • Rainwater and surface water run-off filtration systems ACO QuadraCeptor is a specialist rainwater and surface water run-off filtration system for the removal of sediment and harmful pollutants. ACO QuadraCeptor significantly improves water quality, removing pollutants before infiltration into the soil or discharge into water courses. • Bypass and full retention oil separators ACO Q-Ceptor oil separators are an innovative range of bypass and full retention separators. The high performance systems are fully compliant with BS EN 858:2002 parts 1 and 2 and exceed the requirements of the Environment Agency’s PPG 3 guidelines. ACO Q-Ceptors are available in a range of chamber sizes and flow rates for use in car parks, maintenance areas, and industrial and residential applications. Manufactured from polyethylene, the innovative single chamber design of the ACO Q-Ceptor is very compact and robust offering significant advantages in installation and handling costs over traditional GRP products. ACO Q-Ceptors are available in two performance classes as specified by BS EN 858-1:2002. Both Class 1 and Class 2 ACO Q-Ceptors are available as bypass or full retention separators. ACO Water Management solutions address the four stages of Effective Water Management: Collect, Clean, Hold, Release.

ACO QuadraCeptor surface water run-off filtration

The four stages of Effective Water Management

ACO QuadraCeptor specialist rainwater and surface water run-off filtration system

ACO Q-Ceptor bypass oil separator

ACO Q-Ceptor full retention oil separator

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PIPES

EXTERNAL WORKS Polypipe Civils Pipes

Contact t: 01509 615100 civilsenquiries@polypipe.com Web www.polypipe.com Address Polypipe Civils (Head Office) Charnwood Business Park North Road Loughborough LE11 1LE Accreditation BS EN ISO 9001:2015 BS EN ISO 14001:2004 Affiliations British Water British Plastics Federation Plastic Pipes Group Susdrain The European Plastic Pipes and Fittings Association

Additional entries Ridgistorm-XL pipes ‰ 54 Ridgistorm-XL chambers, manholes and catchpits ‰ 55 Water management solutions ‰ 60 Green infrastructure ‰ 535

Polypipe Civils provides a range of engineered plastic pipes made from high-quality polymers, including Ridgistorm-XL, Ridgidrain, Polysewer and Ridgisewer. These provide a comprehensive range of surface water drainage and gravity sewer systems, which now also includes two new diameters in the Ridgisewer and Ridgidrain ranges.

• Ridgistorm-XL Ridgistorm-XL is a large-diameter pipe system, available in 750–3000mm sizes. It is designed for high-capacity surface water drainage and foul sewer applications, particularly on large residential developments requiring adoptable attenuation structures. Ridgistorm-XL’s robust, adaptable and flexible stiffness classifications make it a highly versatile large-diameter system. • Ridgidrain Ridgidrain was the first twin-wall surface water drainage system in the UK certified under the Highways Authority Product Approval Scheme (HAPAS). It is a high-strength, structured wall pipe system used for non-pressurised surface and subsurface drainage applications. Available in lengths up to 6m to reduce the number of joints, Ridgidrain has a high strength-to-weight ratio that is suited to areas with high traffic loads. • Ridgisewer Ridgisewer is a range of structured wall gravity sewer pipes, available in six sizes ranging from 400 to 900mm. Ridgisewer is engineered from durable, light-in-weight polypropylene that is chemical, impact and abrasion resistant. It is quick and easy to install, compatible with Ridgistorm-XL chambers, and delivered in 1.5, 3 or 6m lengths. Ridgisewer is WRc approved, BSI Kitemarked and BBA certified. • Polysewer Polysewer is a range of PVCu, structured wall gravity sewer pipes and fittings. The system is integrally socketed and BSI Kitemarked, and is suitable for either new or replacement gravity sewer schemes.

Drainage infrastructure – Nottinghamshire

Ridgisewer and Polysewer

Ridgidrain being manufactured

Ridgidrain being loaded

Polypipe Civils provides a range of engineered plastic pipes made from high-quality polymers, including Ridgistorm-XL, Ridgidrain, Ridgisewer and Polysewer

FOR PROJECTS AND CASE STUDIES www.externalworks.co.uk  

54 PIPES AND COMPONENT CHAMBERS

EXTERNAL WORKS

Polypipe Civils Ridgistorm-XL pipes

Ridgistorm-XL is an engineered, thermoplastic, large-diameter pipe system for use in a wide variety of applications. Ridgistorm-XL is lighter in weight than rigid materials, yet strong, robust and flexible. It is able to withstand significant ground movement and differential settlement.

Applications Ridgistorm-XL is suitable for surface water and foul water drainage, combined sewers, largescale flood alleviation schemes, renewable energy and even displacement ventilation. It is available in varying stiffness categories to suit individual site conditions, and can be used for a range of applications including residential and commercial developments, highways and open spaces. • Pipe profile design Pipe profiles can be adapted to maximise strength and minimise the use of material within the pipeline. This improves pipeline performance and provides a fully engineered solution. • Jointing options Ridgistorm-XL can be designed and manufactured to suit any jointing requirements on-site. Ring seals, electro-fusion welding, extrusion welding, flange connections and mechanical pipe couplings can all be utilised with the system. • Safety ancillaries Additional health and safety features can be chosen for Ridgistorm-XL chambers, including lifting points, safety chains and guardrails.

Dimensions Diameters: 750–3000mm; lengths: 1.25–12m.

Yorkshire Water utilises Ridgistorm-XL

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 5–80mm. This profile can be used in certain pipeline and chamber applications.

PR profile Pipes produced with a PR profile achieve high stiffness with relatively low weight. This is a common pipe profile for use in surface water, foul and combined sewer drainage.

Olympia profile In addition to the PR profile, the Olympia profile option can achieve greater pipeline stiffness with a comparatively low weight. This profile is often used in the larger diameters of Ridgistorm-XL.

Capacities

Additional entries Pipes ‰ 53 Ridgistorm-XL chambers, manholes and catchpits ‰ 55 Water management solutions ‰ 60 Green infrastructure ‰ 535

Due to its large diameter, Ridgistorm-XL can be used to intercept and store large volumes of stormwater run-off. A multi-leg tank system can comprise Ridgistorm-XL pipes, bespoke fabrications and chambers.

Accreditation Ridgistorm-XL is WRC approved and has approval from water companies for capital works projects and Section 104 and 106 agreements.

SQ profile 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.

SQ2 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.

CPR profile The majority of Polypipe’s pre-fabricated components have a CPR profile achieving high stiffness with relatively low weight.

Ridgistorm-XL fabrication

Stormwater run-off attenuation system

Pipe profiles can be adapted to maximise strength and minimise the use of material within the pipeline

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PIPES AND COMPONENT CHAMBERS

EXTERNAL WORKS Polypipe Civils Ridgistorm-XL chambers, manholes and catchpits

Polypipe’s chambers, tanks and manholes are designed to integrate seamlessly with its Ridgistorm-XL, Ridgidrain and Ridgisewer pipes, as well as existing drainage and water management systems. Specifiers can choose which components are prefabricated into the chambers. • Chamber options RIDGISTORMAccess provides easy access into and maintenance of a pipeline. RIDGISTORMCheck is used where flows within a drainage system are required to be limited or checked (eg prior to discharge from site). RIDGISTORMControl is used where a drainage or sewer system requires integrated control devices. RIDGISTORMSeparate captures and separates out silt particles and debris from a drainage system, protecting downstream elements. RIDGISTORMSeparate-X4 is a 4-stage treatment device for the treatment of surface water run-off, providing high levels of contaminant removal, including hydrocarbons and heavy metals. • Chamber ancillaries Chamber ancillaries are available for safety, access and handling, including integral lifting points, safety chains, step rungs, ladders, guardrails, and benching and channelling options. Penstocks, gate valves and flap valves can also be included.

Prefabricated thermoplastic chamber

Capital works scheme

Guardrail assemblies can be pre-fitted

Safety chain assembly

Ladders and steps improve ease of access

Ridgistorm-XL lifting points assist with handling

Composition and manufacture All chambers are fabricated at Polypipe’s own facility, which allows the company to create quality-controlled, engineered systems. They have a structured wall thermoplastic construction that is strong but light-in-weight, fully-welded and watertight for high durability and performance.

Dimensions Available in diameters from 750 to 3000mm. Additional entries Pipes ‰ 53 Ridgistorm-XL pipes ‰ 54 Water management solutions ‰ 60 Green infrastructure ‰ 535

Installation and maintenance Chambers are delivered to site ready to install as one-piece modular solutions. Their light weight makes them easy to transport, handle and install. Design life is in excess of 100 years.

Polypipe’s range is designed to integrate seamlessly with its Ridgistorm-XL, Ridgidrain, Ridgisewer and Polysewer pipes, as well as with existing drainage and water management systems

TO COMPARE SIMILAR PRODUCTS www.externalworks.co.uk  

56 HEADWALLS AND OUTFALLS

EXTERNAL WORKS Althon Ltd Precast headwalls

Contact t: 01603 488700 f: 01603 488598 sales@althon.co.uk Web www.althon.co.uk Address Althon Ltd Vulcan Road South Norwich NR6 6AF Operational area UK (headwalls)

Additional entries Flow control ‰ 58 Channel drainage ‰ 77

Standard precast concrete headwall with handrail

Althon offers precast headwalls that are a costeffective alternative to in-situ concrete structures for connecting pipework that discharges into open watercourses. All drainage pipes discharging into open watercourses, such as swales, ditches, ponds and rivers, should be fitted with an appropriate headwall. Althon headwall units can be pre-fitted with a range of accessories such as flap valves, penstocks, Kee Klamp® handrails and gratings, depending on requirements. • Sewers for Adoption headwalls (SFA) Where a headwall is part of a Section 104 Agreement and the sewers are to be adopted once completed by the local water company, then the materials used and the installation must comply with the ‘Sewers for Adoption’ guidelines. Althon offers SFA precast concrete headwalls to comply with these requirements. • Rectangular Sewers for Adoption headwalls (RSFA) Althon’s rectangular precast concrete headwalls are Sewers for Adoption compliant. They are available in 300 and 500mm thicknesses, each of which is available in three depths. RSFA headwalls are manufactured with three different wall profiles to suit the gradient of the bank: 1:1, 1:2 and 1:3 slope. They are typically supplied complete with a Kee Klamp® handrail to the back wall and horizontal sections of the wingwalls, a galvanised steel access ladder, and a self-closing gate with padlock facility above. • Bespoke headwalls Althon is able to design and manufacture bespoke headwalls to suit site-specific circumstances. These can either be one-piece units, or sectional structures where the headwall must be very large. Bespoke headwalls can accommodate gratings, flap valves, trash screens and other security or flow control devices as well as health and safety essentials such as handrails, walkways and step ladders.

Bespoke precast wingwalls

Rectangular ‘Sewers for Adoption’ headwall (RSFA)

‘Sewers for Adoption’ headwall (SFA)

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

HEADWALLS AND OUTFALLS

EXTERNAL WORKS BCM GRC Ltd GRC headwalls/retaining structures

Contact Darin Ballington t: 01948 665321 f: 01948 666381 info@bcmgrc.com

BCM GRC Ltd offers glass fibre reinforced concrete (GRC) headwalls, which ensure that the banks of rivers, streams or ponds are not eroded by discharged water. They can also be used as small retaining structures for carriageway lighting, utility boxes and other applications. Headwalls are manufactured from high-strength, grade 18 GRC. Long-fibre GRC gives greater strength-to-weight ratios and resistance to damage, frost, chemical attack and road salts. All units are available with gratings if required.

Web www.bcmgrc.com Address BCM GRC Ltd Unit 22 Civic Industrial Park Whitchurch SY13 1TT Accreditation AMS – GRCA Approved Manufacturing Scheme Affiliations Glassfibre Reinforced Concrete Association (GRCA) Concrete Society Awards GRCA Merit Award

B900 headwall unit awaiting dispatch from factory

Headwall unit used as a small retaining structure

Retaining wall with pipe drain inlet unit and silt box

Large headwall

Pipe drain inlet units incorporate a silt box

B900 headwall in situ

B300 headwall in situ

FOR MORE ILLUSTRATIONS www.externalworks.co.uk  

58 FLOW CONTROL

EXTERNAL WORKS Althon Ltd Flow control

Contact t: 01603 488700 f: 01603 488598 sales@althon.co.uk Web www.althon.co.uk Address Althon Ltd Vulcan Road South Norwich NR6 6AF Operational area Worldwide (flow control/channel drainage)

Additional entries Precast headwalls ‰ 56 Channel drainage ‰ 77

Penstock pre-fitted to headwall with floor column

Althon offers flow control devices that can be used in surface, sewer and process water applications. • Flap valves Flap valves are a simple and effective way to prevent water backflow into a system. For heavier duty applications, 100–1500mm flaps are made with additional features such as welded stiffening ribs. They are manufactured in a combination of HDPE and 316 stainless steel, meaning they are lightweight and high in strength. They are easy to install, responsive and reliable. • Penstocks Medium-duty penstocks are a simple, effective way to prevent water backflow into a system. Designs have been developed to accommodate the majority of situations where a penstock is required. They are suitable for sealing pressures of 5mWC as standard, require virtually no maintenance, and are fast, safe and easy to install. • Stop logs Stop logs are used for the isolation and containment of water. They are lightweight and corrosion resistant, and are suitable for applications where standard single-piece stop gates would be too heavy to lift or where multiple door sections are called for. They are manufactured in the latest materials combined with aluminium or stainless steel, meaning that a solution can be provided for most water sewage and effluent treatment situations. • Inline WaStop valves WaStop valves can be installed inline between two pipes to prevent backflow. They are made from 304 or 316 stainless steel, or PVC tube, and incorporate a cone-shaped chloroprene membrane. The membrane allows water flow to pass in the desired direction, but when backflow occurs, the membrane fills, sealing the pipe. As the WaStop does not rely on gravity to close the membrane, it does not need to be fitted against a vertical headwall. They are suitable for pressures up to 8mWC.

Flange-mounted flap valve

Flap valves pre-fitted to Althon headwalls

Circular flap valve

Stop logs can be factory-fitted to headwalls

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

STORMWATER MANAGEMENT

EXTERNAL WORKS Hydro International Stormwater flow control and storage

Contact Stormwater hotline t: 01275 337977 stormwater@hydro-int.com Web www.hydro-int.com Address Head Office Hydro International Shearwater House Clevedon Hall Estate Victoria Road Clevedon BS21 7RD t: 01275 878371 f: 01275 874979 stormwater@hydro-int.com Accreditation ISO 9001:2008 ISO 14001:2004 UVDB – Achilles Affiliations British Water CIRIA British Plastics Federation Operational area UK, Ireland, Europe

Additional entries Stormwater treatment ‰ 65

Hydro-Brake® Optimum installation – Dartford

Hydro International specialises in the provision of Sustainable Urban Drainage Systems (SuDS). Stormwater storage for SuDS can be provided with the Stormbloc® Optimum and Stormcell® geocellular storage systems. • Stormbloc® Optimum Stormbloc® Optimum is a modular, customisable stormwater and surface water management system that is lightweight, easy to transport and store, and quick to install. • Stormcell® water storage Stormcell® is a high-capacity, low-maintenance modular storage system for surface water and stormwater. It can be customised to suit shallow, deep or irregular sites. Stormcell® is light but strong, and is ideal for use beneath roads, car parks and industrial areas. • Hydro-Brake® Optimum Hydro-Brake® Optimum is designed to manage low, moderate or high flows, providing sustainable drainage from single sites to large networks. It provides customised water quantity management for surface, foul or combined water. • Hydro-Brake® Flood Hydro-Brake® Flood provides large-scale flood protection at the watercourse level. It is a highly sustainable, precision-engineered vortex flow control that prevents flooding by holding back excess waters in temporary flood storage areas. • Hydro-Brake® Agile Hydro-Brake® Agile reduces upstream storage and manages flood risk at sites with stringent discharge consents where space for on-site attenuation is at a premium. Hydro-Brake® Agile is a float-controlled flow control that achieves a constant rate of discharge which therefore means the minimum possible upstream storage. • Hydro-Brake® Orifice Hydro-Brake® Orifice manages moderate flows and delivers sustainable drainage at site and development level. Hydro-Brake® flow controls can be supplied prefitted in precast, reinforced concrete chambers for quick and easy installation on site.

Hydro-Brake® Flood installation – Wigan

The Hydro-Brake® flow control series

Stormbloc® Optimum modular surface water storage/infiltration system

Stormcell® geocellular storage system

Stormcell® installation

Stormbloc® Optimum installation

Hydro-Brake® Optimum Design Tool

FOR BROCHURES AND DOWNLOADS www.externalworks.co.uk  

60 STORMWATER MANAGEMENT

EXTERNAL WORKS Polypipe Civils Water management solutions

Contact t: 01509 615100 civilsenquiries@polypipe.com Web www.polypipe.com Address Polypipe Civils (Head Office) Charnwood Business Park North Road Loughborough LE11 1LE Accreditation BS EN ISO 9001:2015 BS EN ISO 14001:2004 Accreditation British Water; British Plastics Federation; Susdrain Plastic Pipes Group; TEPFFA Additional entries Pipes ‰ 53 Ridgistorm-XL pipes ‰ 54 Ridgistorm-XL chambers, manholes and catchpits ‰ 55 Green infrastructure ‰ 535

Permavoid 85

Polypipe has the largest range of geocellular products and systems in the market. • Permavoid geocellular systems Permavoid is an engineered, geocellular water management system designed to manage water treatment at shallow depths. The system is comprised of high-strength recycled polypropylene modular cells which are connected together using Permaties. This creates a structural raft with a high compressive and tensile strength that can be used as a replacement for granular sub-bases. The addition of Permachannel, Permatreat and Permaceptors allows water capture from hardstanding areas. • Polystorm geocellular systems Polypipe’s range of Polystorm cells provides stormwater retention, attenuation or infiltration at a variety of depths and across non-loaded and loaded applications from pedestrianised areas to large HGV parks. • Polystorm Deep The latest addition to the Polystorm range, Polystorm Deep is capable of installations to grater depths due to its high lateral strength. Permavoid is a high-strength, modular geocellular structure for surface water management

Permavoid 150

Polystorm Xtra

Polystorm Lite

Polystorm and Polystorm-R

Polystorm Deep Polystorm ranges of geocellular water management solutions

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

STORMWATER MANAGEMENT

EXTERNAL WORKS

Polypipe’s geocellular systems being installed

Permavoid 85

Permavoid 150

Polystorm Xtra

Polystorm Lite

Polystorm-R

Polystorm

Polystorm Deep

Polystorm Inspect

Polystorm Access

Permachannel

Permavoid Biomat

Permafilter geotextile

Geomembrane

Permatie

Permavoid capillary cones

FOR PROJECTS AND CASE STUDIES www.externalworks.co.uk  

62 STORMWATER MANAGEMENT

EXTERNAL WORKS SDS Limited Surface water management

Contact t: 01934 751303 info@sdslimited.com Web www.sdslimited.com Address SDS Limited Clearwater House Castlemills Biddisham BS26 2RE Accreditation ISO 9001; CHAS; Achilles UVDB Affiliations British Water; British Plastics Federation Awards Lloyds Bank National Business Awards 2017 – winner, Small to Medium Sized Business of the Year; UK Business Awards 2017 – winner, Best Small to Medium Sized Business Country of manufacture UK

SDS specialises in engineering innovative and cost-effective turnkey surface water management systems. SDS’s integrated water management system ensures that surface water run-off can be collected, treated, stored and released efficiently and sustainably, from where rainfall first meets the ground to the point of its ultimate dispersal.

Technical support The company provides a full service solution to support clients throughout the entire lifecycle of their installed water management systems. Services range from initial consultation, to design, manufacture and installation of systems, to ongoing maintenance.

Sectors SDS services multiple private and public sector industries, including: • Commercial • Education • Health • Industrial • Infrastructure • Logistics • Residential • Retail • Transport

Sustainable urban drainage system using GEOlight® storage tanks – Westgate Shopping Centre, Oxford

Aqua-Xchange™ engineered filter media

Stormwater treatment and attenuation system featuring Aqua-Swirl™ and GEOlight® – ProLogis DIRFT distribution centre, Daventry

Aqua-Xchange™ removes highway run-off toxins

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

STORMWATER MANAGEMENT

EXTERNAL WORKS

Aqua-Filter™ stormwater filtration unit

Aqua-Swirl™ hydrodynamic vortex separator

Aqua-Swirl™ installation – London Luton Airport

SDS engineered stormwater and surface water run-off management system

GEOlight® stormwater storage tanks

GEOlight® installation – Stortford Fields, Herts

SDS stormwater treatment and attenuation system – Eastern High School, Cardiff

GEOlight® provides green residential amenities with additional run-off capacity – The Quarry, Erith

TO COMPARE SIMILAR PRODUCTS www.externalworks.co.uk  

64 STORMWATER MANAGEMENT

EXTERNAL WORKS ACO Water Management – a division of ACO Technologies Stormwater control

Contact Head office t: 01462 816666 f: 01462 815895 technologies@aco.co.uk Web www.aco.co.uk Address ACO Water Management – a division of ACO Technologies plc ACO Business Park Hitchin Road Shefford SG17 5TE Accreditation ISO 9001: 2015; ISO 14001:2015 CPD Surface water management professional development t: 01462 810254 ukprofessionaldevelopment@aco.co.uk

Additional entries Interceptors ‰ 52 Surface water management ‰ 80 Building + Landscape drainage ‰ 81

ACO Q-Brake vortex flow control

ACO Water Management is an expert in water engineering, providing design solutions for stormwater management. ACO’s approach to SuDS controls rainwater distribution from when it hits the ground until it re-enters the natural water environment, minimising environmental impact and maximising sustainability. ACO Water Management solutions address the four stages of Effective Water Management: Collect, Clean, Hold, Release. • Surface water infiltration and storage ACO StormBrixx is a unique and patented plastic geocellular stormwater management system for attenuation and soakaway (infiltration) usage. Its versatile design allows the system to be used in configurations and applications across all construction environments as a standalone solution or as part of an integrated sustainable urban drainage (SuDS) scheme. The patented brickbonding and cross bonding feature provides a strong, long-term installation and also helps to improve the construction speed of the tank. Delivery, site logistics and installation are all significantly simplified, as a result of the system’s ‘stackable’ design. The range consists of StormBrixx SD (standardduty) and StormBrixx HD (heavy-duty) systems. The open cell structure for both systems allows easy access for CCTV and jetting equipment from just a few access points. • Flow control and regulation ACO Q-Brake Vortex is a horizontal vortex flow control system designed to regulate stormwater flows of 2–100 litres per second. ACO Q-Plate regulates stormwater flows where a vortex flow control is not the most effective solution, or where flows are greater than 100 l/s. Both systems can be used in conjunction with retention and attenuation systems, such as ACO StormBrixx, as an integrated sustainable urban drainage (SuDS) scheme.

ACO Q-Plate Orifice plates

ACO StormBrixx installation – the unique pillar configuration gives a high void ratio of 95%

ACO Q-Brake Vortex flow control system and ACO StormBrixx attenuation system

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

STORMWATER MANAGEMENT

EXTERNAL WORKS Hydro International Stormwater treatment

Additional entries Stormwater flow control and storage ‰ 59

Downstream Defender® installation – Cardiff

Hydro StormTrain® is a series of surface water treatment devices for use in Sustainable Urban Drainage Systems (SuDS). There are four devices within the range: First Defense®, Downstream Defender®, Up-Flo™ Filter and Hydro Biofilter™. Each device delivers measurable and repeatable surface water treatment, and each one can either be used independently to meet the specific treatment needs of a site, or combined to form a management train. • First Defense® First Defense® captures and retains stormwater sediment, litter and floatables in a unit that saves site space and adapts to smaller or logistically difficult site locations. This versatile stormwater separator can work with single and multiple inlet pipes and inlet grates, and is easily maintained from the surface by a standard vacuum tanker. • Downstream Defender® Downstream Defender® captures and retains sediment, oils and floatables from stormwater run-off over a wide range of flows in a small footprint. This advanced hydrodynamic vortex separator provides impressive and reliable removals of sediments, oil and floatables from stormwater run-off and is easily maintained from the surface by a standard vacuum tanker. • Up-Flo™ Filter Up-Flo™ Filter captures sediment, oils, heavy metals and nutrients from stormwater in a reduced footprint. This advanced stormwater treatment solution combines sedimentation and screening with fluidised bed filtration to deliver exceptional surface water pollution removal. • Hydro Biofilter™ Hydro Biofilter™ removes sediment, trash, oil, dissolved metals and nutrients from surface runoff using the natural power of biofiltration. Combining the simplicity of SuDS with the sophistication of smart engineering in a biofiltration system, the Hydro Biofilter™ uses soil and filter media to treat an assortment of coarse, fine and dissolved pollutants from surface water run-off, even during high flows.

Hydro Biofilter™ installation – Barry, South Wales

The Hydro StormTrain® series of surface water treatment devices

Hydro Biofilter™ installation – Glasgow, Scotland

Downstream Defender® installation – the Midlands

Up-Flo™ Filter installation – Aberdeen, Scotland

FOR MORE ILLUSTRATIONS www.externalworks.co.uk  

66 PERMEABLE PAVING

EXTERNAL WORKS Gridforce Surface drainage

Contact Sales t: 0115 965 7303 f: 0115 965 5151 sales@gridforce.co.uk Web www.gridforce.co.uk Address Gridforce Industrial Estate South Park Road Calverton Nottingham NG14 6BP Operational area Worldwide Country of manufacture England

Additional entries Ground reinforcement ‰ 14

Gridforce offers a plastic paver system made from 100% recycled LDPE, which provides effective surface drainage and ground reinforcement. It is suitable for temporary or permanent use and provides a firm surface that will not sink, rut or shift. The pavers are costeffective compared to impermeable surfaces and their interlocking design makes installation easy. The system meets current SuDS legislation and has a 10-year guarantee. • Applications Hard landscaping applications include SuDS, car parks, ground reinforcement, industrial hardstanding, access routes, helipads, construction sites and domestic driveways. Soft landscaping applications include lawn and slope reinforcement, events grounds, caravan sites, golf courses and ground stabilisation. The Gridforce Park range can be used for instant grass reinforcement by being inverted and pressed into existing grass without the conventional dig out and build-up of sub-base. • Sustainable Urban Drainage Systems Pavers are fully compliant for use in SuDS to provide on-site infiltration of rainwater or stormwater, eliminating the need for drainage pipework. By returning the stormwater to the water table, pressure on the sewers is relieved.

Gridforce is made from 100% recycled LDPE, which provides effective drainage and reinforcement

Gridforce pavers reinforcing grassed area in car park

Gridforce pavers can be filled with a range of materials

Lorry using completed access road filled with aggregate

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PERMEABLE PAVING

EXTERNAL WORKS

For drainage applications, Gridforce tiles can be filled with stone or other aggregates

The system meets current SuDS legislation and has a 10-year guarantee

Gridforce pavers provide a firm, stable surface

Gridforce pavers have an interlocking design which makes installation easy

Completed parking area

FOR BROCHURES AND DOWNLOADS www.externalworks.co.uk  

68 PERMEABLE PAVING

EXTERNAL WORKS AHS Ltd Paving Grid

Contact t: 0333 207 0440 sales@ahs-ltd.co.uk Web www.ahs-ltd.co.uk Address AHS Ltd Coppards Lane Northiam TN31 6QN Accreditation ISO 14001 ISO 9001 BS EN 14001:2015 FSC Chain of Custody Constructionline Affiliations BALI

Additional entries Shock Pad Underlay ‰ 503

Amenity Horticultural Services (AHS) has more than 26 years’ experience servicing the landscape, play area and equestrian surfacing sectors. Paving Grid by AHS provides a cost-effective, permeable surfacing solution, specifically designed to support a range of materials including soil, grass and gravel. It is easy to use, durable, antislip, frost/UV resistant and delivers structural integrity with a load-bearing capacity of up to 350 tonnes/m2.

Key benefits • High load-bearing – up to 350 tonnes/m2. • Quick and easy to install. • Low maintenance. • Strong connections with minimal movement. • Choice of infills including gravel, grass and soil. • Lightweight and easy to transport. • 100% natural permeability. • 100% recycled and 100% recyclable. • Environmentally-friendly and sustainable. • Non-toxic. • Withstands thermal expansion. • Frost and UV resistant. • Will not crack or splinter. In contrast to other materials, the porous surface of Paving Grid fully supports drainage, with the cells allowing for water to he held for gradual release into the ground, which helps reduce the spread of urban hotspots and flood-risk zones.

Paving Grid with gravel infill

Parking markers can be used to delineate areas as required

Paving Grid is quick and easy to install Module filled with rootzone to within 3mm of the surface, then topped with grass seed

Bedding layer of 50–70mm of rootzone (must be compacted)

Applications • Car parks, driveways, residential parking. • Footpaths, walkways, wheelchair access. • Cycle paths, towpaths, golf course paths. • Emergency vehicle access routes. • Aircraft parking, helipads. • Hardstandings for outbuildings and caravans. • Construction sites, agricultural areas, farms. • Grass seeded areas, green spaces, green roofs. • Playgrounds, festival sites, campsites. • Stables, paddocks, riding arenas. • Embankment stabilisation. • Private roads. Paving Grid has up to 350 tonnes/m2 load capacity

Technical support

Open grade sub-base layer. Drainage may be required. Depth of sub-base layer depends on the strength of the existing subsoil/base

Geotextile membrane

Existing subsoil/base

Paving Grid installation with grass infill – other infills can be used including soil and gravel

AHS has an experienced, dedicated team to provide advice and support for projects.

Delivery Paving Grid is available for delivery nationwide.

Installation and maintenance Paving Grid is low maintenance and guaranteed for 10 years. AHS can supply everything needed for installation including geotextile membrane, grass seed, gravel and decorative aggregates, sub-base materials, rootzone, sharp sand, edging and kerbing.

Paving Grid with grass infill

AHS can supply everthing needed for installation

Paving Grid is suitable for a range of applications

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PERMEABLE PAVING

EXTERNAL WORKS CORE Landscape Products Gravel and grass grids for permeable paving

Contact Manni Keates t: 0800 118 2278 sales@corelp.co.uk Web www.corelp.co.uk Address CORE Landscape Products Calves Lane Yard Bellswood Lane Iver SL0 0LU Affiliations BALI; CHAS; Constructionline; Exor; OHIM Registered Operational area Worldwide

Additional entries Tree root protection system ‰ 18 Flexible steel landscape edging ‰ 86

CORE Landscape Products manufactures a complete range of gravel and grass grids for permeable paving applications. • Domestic gravel stabilisation grids CORE DRIVE interlocking domestic grade porous pavers are designed to be virtually invisible once installed. They have an attached geotextile membrane and can be used on sloped applications with gradients up to 20%. The easy-to-install grid system creates a lowimpact, porous wearing course suitable for SuDScompliant schemes. • Commercial gravel stabilisation grids CORE COMMERCIAL interlocking panels have been specifically designed to cope with high traffic levels and heavy loads. Plug-in markers can be used to create parking bays that will comply with current UK building regulations for commercial car parks. • Grass reinforcement grids CORE GRASS reinforcement grids are designed for grass parking areas and access routes. These porous pavers are UV stable and manufactured using recycled materials. Available in green or black.

CORE DRIVE 50-30 domestic grade stabiliser

CORE DRIVE 2400x1150mm panel installation

CORE DRIVE installed over old tarmac driveway

CORE COMMERCIAL construction

Gravel car park installation – Manchester

Gravel grid used for resin bound base layer

CORE PRO GRASS build up

Grass parking area installation

Grass car park installation – South West London

FOR PROJECTS AND CASE STUDIES www.externalworks.co.uk  

70 PERMEABLE PAVING

EXTERNAL WORKS Hardscape Resourcing Limited Grid reinforcement for grass and gravel paving

Contact Craig Woolley t: 01484 860044 sales@hrlonline.co.uk Web www.hrlonline.co.uk Address Hardscape Resourcing Limited Westleigh Hall Wakefield Road Denby Dale Huddersfield HD8 8QJ

Additional entries StableEDGE metal landscape edging ‰ 88 StablePAVE stabilised gravel paving systems ‰ 103 Whispercast in-situ exposed aggregate pavement ‰ 104 Colour and texture additives for concrete hardstanding ‰ 105

StableGRASS does not restrict root growth

HRL grass and gravel grids create a naturally permeable reinforced paved surface for vehicular and pedestrian use. Adding strength and durability, and largely invisible once installed, they blend in to the surrounding landscape with minimal visual impact. • StableGRASS grass grids StableGRASS offers two panel sizes in both 38mm and 50mm depths. Available in Green and Black as standard with Buff Dolomite produced to order, the range is flexible, covering almost all potential applications. All are fully interlocking, very robust, and secure, whilst the cell design creates free space for root development. StableGRASS MAXI is the flagship grid. Large dimensional panels of 1.2x0.8m can be laid in brick bond pattern, giving enhanced stability and enabling significant productivity gains on larger installations. Standard light to medium use will require the 38mm depth, whilst more regular vehicular requirements would need 50mm. StableGRASS 38 and StableGRASS 50 are supplied in more traditional 50x50cm panels, where that is a preferred option. Compressive load resistance is similar to StableGRASS MAXI. • StablePAVE gravel grids StablePAVE gravel grids feature a robust weedsuppressant membrane attached to the base, and offer a fast, effective, reinforced, permeable paving whilst restricting aggregate migration and preventing rutting. They allow all the aesthetic benefits of gravel surfaces with significantly added durability and a large reduction in the maintenance demands often associated with gravel paving. StablePAVE TRADE is a translucent white interconnecting panel of 1.2x0.8m produced in both 30 and 40mm depths. Designed as an economic paving solution for light to medium vehicle parking, pathway, pedestrian and communal areas, the grids will be invisible after correct installation. StablePATH ECO Black is an identical panel to StablePAVE TRADE other than the colour. As a consequence, cost is reduced and it is often used as a budget option on pathway networks. StablePAVE HD pro is a fully interlocking heavier duty grid for more frequently trafficked areas and where heavier point loads, such as horse boxes, and trailers are in regular use. Light Grey in colour StablePAVE HD Pro is 38mm deep.

StableGRASS MAXI – 1200x800mm panels

StableGRASS MAXI is quick to install

StableGRASS – stabilised reinforcement for grass

StableGRASS – black

StablePAVE HD Pro – heavy-duty porous paving

Composition and manufacture All grids are manufactured using specially selected and graded recycled polypropylene. Raw material is treated for enhanced UV resistance. Fully recyclable, the products make a significant contribution to sustainability criteria. StableGRASS is a free-draining, reinforced surface

StablePAVE TRADE showing membrane

Reinforced gravel has no rutting or migration

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PERMEABLE PAVING

EXTERNAL WORKS Terram Porous paving for SuDS

Contact t: 01621 874200 f: 01621 874299 info@terram.com Web www.terram.com Address Fiberweb Geosynthetics Ltd Blackwater Trading Estate The Causeway Maldon CM9 4GG Accreditation ISO 9001:2008 Investors in People Operational area UK

Under the Terram brand, Fiberweb Geosynthetics Ltd offers reinforcement products for lightweight occasional use up to regular heavy traffic on grass or gravel surfaces. • BodPave™ 85 porous pavers BodPave™ 85 cellular, interlocking, porous pavers are designed for natural grass reinforcement, ground stabilisation and gravel retention. Aimed at regularly trafficked surfaces, they suit emergency vehicle and HGV access lanes, car/coach parks, driveways, aviation applications, pedestrian areas and disabled access paths. BodPave™ 85 pavers have ground spikes that resist lateral movement and castellated cells with unique water retention chambers that enhance traction and lateral root growth, promote optimum nutrients/water uptake and protect roots. The open-cell structure provides high surface water infiltration and suits SuDS profiles. • Truckpave™ permeable pavers Truckpave™ is a heavy-duty plastic paver developed specially for lorry access roads and service yards, as well as road-widening schemes and motorway emergency turning areas. Unlike conventional concrete systems, Truckpave™ requires no specialist handling as each unit weighs only 9kg. The system needs no steel reinforcement and is flexible so will not crack or overheat and conduct heat to grass.

Gravel-filled porous paving grids

BodPave™ 85 typical construction profile

BodPave™ 85 plastic pavers clip together

Truckpave™ heavy-duty permeable pavers

BodPave™ 85 is installed onto a firm, free-draining base. Cells are filled with a root-zone blend for a grassed finish or with an angular aggregate. Truckpave™ can be supplied with design assistance for individual projects.

BodPave™ 85 grass surface with parking markers

BodPave™ 85 with a grassed finish

Truckpave™ interlocking pavers

Gravel-filled Truckpave™ surface

Truckpave™ is suitable for industrial yards

Composition and manufacture BodPave™ 85 is made from UV stabilised, 100% recycled polyethylene. It is chemically inert, non-toxic and load-bearing up to 400t/m2. Units are 500x500x50mm with a 35mm ground spike. Truckpave™ pavers are made from recycled plastic, which is harmless to plants and animals. Each paver is 600x400x80mm.

Sitework Additional entries Geocells ‰ 16 GrassProtecta® reinforcement mesh ‰ 17

Truckpave™ for heavy load-bearing access roads

TO COMPARE SIMILAR PRODUCTS www.externalworks.co.uk  

72 PERMEABLE PAVING

EXTERNAL WORKS Addagrip Terraco Ltd Terrabase ‘no-dig’ resin bound SuDS surfacing

Contact t: 01825 761333 sales@addagrip.co.uk Web www.addagrip.co.uk Address Addagrip Terraco Ltd Addagrip House Bell Lane Industrial Estate Uckfield TN22 1QL Affiliations British Association of Landscape Industries (BALI) English Historic Towns Forum Country of manufacture UK

Addagrip formulates and produces high-quality, SuDS porous, resin-based surfacing systems. Terrabase Rustic and Terrabase Classic offer a low-maintenance, hard-wearing ‘no-dig’ surfacing option for driveways, paths, patios, courtyards, cycle paths. • Terrabase Rustic bound surfacing Terrabase Rustic is an innovative, patented, ‘nodig’ resin bound porous sytem that can be applied onto a compacted MOT Type 3 or similar. No asphalt or concrete is required. Available in a 10mm natural aggregate blend, Terrabase Rustic provides a decorative and natural rustic-looking porous surface. It is suitable for pedestrian and light vehicle use. • Terrabase Classic bound surfacing Terrabase Classic uses the innovative, patented, ‘no-dig’ Terrabase base with a BBA-approved porous resin bound Addaset, Addabound or Terrabound blend for a contemporary look.

Accreditation Additional entries Resin bound porous surfacing ‰ 92 Addastone resin bonded decorative surfacing ‰ 93

Terrabase holds BRE Global verified EPD certification.

Terrabase Rustic – Wakehurst Place, Sussex

Terrabase Classic – private garden, London

Terrabase Rustic – Exeter flood defence

Terrabase Rustic – Urquhart Castle, Loch Ness

Terrabase Rustic – Westcliffe Extra Care Facility

Terrabase Rustic – Royal Botanic Gardens, Kew

Terrabase Classic – Trent Bridge cricket ground

Terrabase Rustic – Melior St Garden, London

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PERMEABLE PAVING

EXTERNAL WORKS Groundtrax Systems Ltd Cellular paving systems

Contact Sales t: 03456 800008 info@groundtrax.com Web www.groundtrax.com Address Groundtrax Systems Ltd Station Yard Ripley Harrogate HG3 3BA Operational area Worldwide Country of manufacture UK & Europe

Groundtrax supplies a full range of high-quality permeable cellular paving products as well as all the geosynthetics needed to install a fully SuDScompliant system. Products are available for lightduty to ultra heavy-duty use, and are made in the UK or Europe from high-quality raw materials. • Grass reinforcement systems The CellPave range includes products to accommodate everything from bicycles through to the largest trucks and forklifts. All pavers are suitable for gravel infill, and grass can also be established using the company’s deeper pavers. • Heavy-duty grass reinforcement CellPave HD is a heavy-duty product made in the UK from recycled industrial polymers. It can withstand 30 tonne individual wheel loadings. • ‘No-dig’ grassed pavers CellPave AP is ‘no-dig’, grassed reinforcement paver that is easy to install on existing grassland with a vibratory roller. It is widely used on large grass car parks and over 60 airfields worldwide.

Technical support

Additional entries Ground reinforcement ‰ 21

Groundtrax offers full technical advice, as well as sub-base designs for larger projects. High production capabilities enable the company to supply large schemes in the UK such as airport car parking projects and HGV parking areas.

CellPave™ 40 grass reinforcement system

CellPave™ 50 can have grass or gravel infill

CellPave™ HD can take 30 tonne wheel loadings

BodPave 85™

CellPave™ HD is a heavy-duty product made in the UK from recycled industrial polymers

BodPave 85™

FOR MORE ILLUSTRATIONS www.externalworks.co.uk  

74 PERMEABLE PAVING

EXTERNAL WORKS Marshalls plc Priora permeable block paving

Contact t: 0870 444 6217 f: 0870 442 7725 esi.marshalls@web-response.co.uk Web www.marshalls.co.uk/commercial Address Marshalls plc Landscape House Premier Way Lowfields Business Park Elland HX5 9HT Additional entries Linear drainage systems ‰ 78 Combined kerb & drainage systems ‰ 82 Kerb systems ‰ 84 Modal concrete paving ‰ 106 Concrete paving systems ‰ 108 Concrete block paving and setts ‰ 114 Recon walling ‰ 118 Natural stone ‰ 124 Natural stone facades ‰ 126

Marshalls’ Priora is the UK’s best-selling permeable paving system. It eliminates surface water run-off, alleviates flood risk and improves water quality, providing biodiversity benefits to the local area. In addition, field tests in 2014 have proven that the patented nibs on the edge of each block create 40% more interlock than British Standard blocks. This provides a structurally superior surface that can take heavy loads moving at speeds in excess of 30mph. Priora sub-bases are also now shallower than the British Standard, saving time and money. Priora comes in a range of aesthetic finishes, including flag-sized options. • Sub-base ancillaries Priora blocks are underpinned by a suite of sub-base ancillaries, which can be specified as required. Priora 20mm sub-base and 6mm laying course aggregate give a higher void ratio and structural integrity than specified in the British Standard. MG15 Grid stabilises the sub-base aggregate, improving CBR by 1%. MM380 Membrane is used for the tanking of Type C non-infiltration systems. MT120 Textile is used to improve the quality of water that falls from the sub-base. Conservation Priora permeable flag paving – Workington Leisure Centre

Modal Priora permeable block paving

Mistral Priora paving – SSE Hydro Arena, Glasgow

Priora permeable block paving – Cowbridge

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

PERMEABLE PAVING

EXTERNAL WORKS

Mistral Priora permeable block paving – London

Mistral Priora permeable block paving – Skinners Academy, London

MG15 Grid installation

Priora sub-base design

MT120 filtration geotextile installation

MM380 tanking membrane installation

Mistral Priora permeable block paving – Woodberry Down, London

FOR BROCHURES AND DOWNLOADS www.externalworks.co.uk  

76 PERMEABLE PAVING

EXTERNAL WORKS Tobermore Permeable paving

Contact Sales t: 028 7964 2411 f: 028 7964 4145 sales@tobermore.co.uk Web www.tobermore.co.uk Address Tobermore 2 Lisnamuck Road Magherafelt BT45 5QF Accreditation ISO 9001 ISO 14001 Operational area UK, Ireland Additional entries Concrete retaining walls ‰ 38 Paving flags ‰ 111 Concrete block paving ‰ 116

Tobermore has more than 75 years’ experience in manufacturing and supplying paving and walling products for all applications. The company can provide solutions that are both aesthetically pleasing and cost-effective, using products which are hard-wearing, have excellent colour retention and reduced efflorescence. At its UK headquarters, Tobermore uses a rainwatering harvesting system, generates electricity using a wind turbine, and ensures that all concrete waste is recycled and reused. • Hydropave SuDS permeable paving Hydropave permeable paving range is as versatile as Tobermore’s standard concrete block paving, but with the benefit of reducing the risk of flooding and pollution. Hydropave allows rainfall to infiltrate the ground naturally and reduce pressure on urban drainage systems. The inclusion of permeable paving as part of a SuDS will increase the likelihood of planning proposals being approved and may also offer a 10–15% cost saving over traditional methods due to a significant reduction in drainage costs.

Technical support Tobermore’s design and engineering specialists offer expert advice and support throughout the design and construction stages of a project.

Hydropave Tegula Duo in Heather and Hydropave Tegula 240 in Natural – Salterns Reach, Prinsted

Eco Hydropave 240 in Natural, Charcoal and Heather – University of Hertfordshire

Tegula Cedar, Hydropave Tegula Duo in Heather and Country Kerb in Granite – fitness centre, Aberavon

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

CHANNEL DRAINAGE

EXTERNAL WORKS Althon Ltd Channel drainage

Contact t: 01603 488700 f: 01603 488598 sales@althon.co.uk Web www.althon.co.uk Address Althon Ltd Vulcan Road South Norwich NR6 6AF Operational area Worldwide (channel drainage/flow control)

Additional entries Precast headwalls ‰ 56 Flow control ‰ 58

BGZ ductile iron bar grille

Althon offers channel drainage systems for applications ranging from domestic to heavy-duty industrial use and airports. • Concrete slot drainage channel Althon concrete slot drainage channels are manufactured in sections up to 4m long for fast on-site installation. Options are available for D400 or F900 load classes making these ideal for draining large, heavily trafficked areas such as industrial estates, ports, airports and motorways. • High-capacity drainage channels Althon’s high-capacity channel drainage system is manufactured in glass reinforced concrete (GRC) in 150–600mm widths. Lid units are available for residential, car park and heavy industrial use. The channels enable long uninterrupted runs to be installed without the need for intermediate outfalls and offer considerable reductions in secondary pipework requirements. The largest channel has a capacity of 412L/m. • BGZ heavy-duty concrete channels Althon BGZ concrete drainage channels are available in internal widths up to 500mm. They have been developed for areas where high acceleration, braking forces or torque could occur, and have very high load-bearing capabilities, with gratings that can withstand up to load class F900. Mesh, slotted and solid gratings are available. • BGZ-F shallow concrete drainage channel Althon BGZ-F concrete channels are suitable for applications up to E600 load class. They are available in widths from 100–300mm, but are much shallower than standard drainage channels of this size. A range of ductile iron, galvanised and stainless steel gratings is available. • Facade slot drainage channel Slot drains are available in galvanised or stainless steel. These slim channels are a discreet method of draining hardstandings or landscaped areas. The stainless steel option is also suitable for internal drainage applications such as food processing plants and areas where chemicals may be present in the run-off.

BGZ-S heavy-duty drainage channel

Althon concrete slot drain – airport installation

Concrete slot drain installation

Slot drainage channel

High-capacity channel installation

FOR PROJECTS AND CASE STUDIES www.externalworks.co.uk  

78 CHANNEL DRAINAGE

EXTERNAL WORKS Marshalls plc Linear drainage systems

Contact t: 0870 444 6217 f: 0870 442 7725 esi.marshalls@web-response.co.uk Web www.marshalls.co.uk/commercial Address Marshalls plc Landscape House Premier Way Lowfields Business Park Elland HX5 9HT Additional entries Priora permeable block paving ‰ 74 Combined kerb & drainage systems ‰ 82 Kerb systems ‰ 84 Modal concrete paving ‰ 106 Concrete paving systems ‰ 108 Concrete block paving and setts ‰ 114 Recon walling ‰ 118 Natural stone ‰ 124 Natural stone facades ‰ 126

Marshalls’ linear drainage systems combine robust, high-performance concrete channels with a variety of tops. The range covers any capacity requirement or loading application. • Slot systems Drexus Slot Drain is a highly effective, discreet linear drainage system that creates an almost invisible, trafficable, surface water drainage system. It can be used with premium concrete flags, blocks or natural stone paving. • Paved systems Max-E Channel is a high-capacity system that is compatible with the Beany Block® combined kerb and drainage system, allowing for continuity of flow between kerb and slot units. Drexus Pave Drain is a concrete drainage channel that is available with a concrete or natural stone top with an aesthetic that complements Marshalls’ most popular paving. It is a trafficable unit suitable for any public realm development. • Grated systems Drexus Lite is a low- to medium-capacity plastic channel with cast iron grates. Lightweight and cost-effective, it is available in 1m lengths and in various depths and widths. Grates are attached via integrated bolt locking bars, with the load classifications of B125 and C250 met. Suitable for pedestrian areas, driveways and car parks. Birco is available in five ranges, all of which feature constant and in-built fall channels. Sizes range from low- to high-capacity, catering for loadings from A15 to F900 with the appropriate gratings. Traffic Drain is a medium-capacity heavy-duty system that complements the Mini Beany® range. It provides continuity of flow between kerb and grate unit, can withstand fast-moving vehicles and is suitable for heavy-loading highway applications. Max-E Channel and Traffic Drain systems are available with gratings.

Birco 100 low-capacity linear drainage system with cast iron slot grate

Technical support

Birco 300, cast iron grate, high-capacity system

Marshalls offers a free drainage design service, frequently partnering clients from the early stages of a project to develop the optimal solution.

Birco 150 low-capacity linear drainage system with cast iron slot grate

Birco Shallow is ideal for shallow excavations

Birco 200 medium-capacity linear drainage system with cast iron slot grate

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

CHANNEL DRAINAGE

EXTERNAL WORKS

Drexus Slot Drain discreet low-capacity linear drainage system – ideal for natural stone landscapes

Drexus Pave Drain in Yorkstone – Holborn

Drexus 100 low-capacity linear drainage system – load classes B125 to D400 with cast iron grates

Drexus Lite plastic channel with cast iron grates

Max-E Channel heavy-duty linear drainage system; high-capacity for loadings up to F900

Traffic Drain heavy-duty linear drainage system

TO COMPARE SIMILAR PRODUCTS www.externalworks.co.uk  

80 CHANNEL DRAINAGE

EXTERNAL WORKS ACO Water Management – a division of ACO Technologies Surface water management

Contact Head office t: 01462 816666 f: 01462 815895 technologies@aco.co.uk Web www.aco.co.uk Address ACO Water Management – a division of ACO Technologies plc ACO Business Park Hitchin Road, Shefford SG17 5TE Accreditation ISO 9001: 2015; ISO 14001:2015 CPD Surface water management professional development Additional entries Interceptors ‰ 52 Stormwater control ‰ 64 Building + Landscape drainage ‰ 81

ACO MonoDrain™ PD100D channel drainage

ACO Water Management is an innovative supplier of surface water management products and support services that provide architects, specifiers and engineers with a complete package of integrated systems for use on all civil engineering projects. ACO Water Management solutions address the four stages of Effective Water Management: Collect, Clean, Hold, Release. • Medium- to heavy-duty channel drainage ACO MultiDrain™ MD is a general-purpose drainage system available in a range of channel widths and constant, shallow or sloping depths. ACO S Range is a heavy-duty channel drainage system with cast-in, ductile-iron edge rails. ACO MonoDrain™ PD100D channel drainage system’s high strength allows economical installation and extra safety through its one-piece construction. It is suitable for a wide range of pedestrian and parking applications such as stations, schools, car parks and commercial areas. ACO RoadDrain® is a one-piece channel drainage system for use in high-speed, medium- to heavyduty road and warehouse applications. • Channel drainage lighting systems ACO LightPoint can enhance and add definition to public and private areas, while providing an economical solution for surface water drainage. • High-capacity drainage systems ACO Qmax® is a high-capacity, heavy-duty and versatile slot drainage system suitable for surface water management and attenuation.It is available in six sizes, ensuring greater flexibility for engineers and designers to optimise hydraulic schemes. A choice of edge rail designs in ductile iron, composite or galvanised steel enable the system to be tailored for use in each application, pavement design or aesthetic requirement. • Combined kerb and drainage systems ACO KerbDrain® is an award-winning, one-piece combined kerb and drainage system for highways, car parks, and commercial and urban landscaping.

ACO Visualiser software program for visualising grating designs – www.aco.co.uk/gratingvisualiser/

ACO MultiDrain™ MD general-purpose channel drainage

ACO Qmax® continuous slot drainage system

ACO LightPoint lighting and drainage system

ACO KerbDrain® combined drainage system

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES

CHANNEL DRAINAGE

EXTERNAL WORKS ACO Water Management – a division of ACO Technologies Building + Landscape drainage

Additional entries Interceptors ‰ 52 Stormwater control ‰ 64 Surface water management ‰ 80

ACO StepDrain – slimline level threshold drainage

ACO Water Management’s Building + Landscape range is tailored to the demands of domestic applications, providing a complete surface drainage solution for driveways, patios, level doorway thresholds, landscaped areas and permeable ground reinforcement. • Domestic channel drainage HexDrain® and RainDrain® channels are designed for a range of domestic applications including patios and garage thresholds. ACO’s ‘Complete the Look’ gratings for driveways and patios are available in six modern finishes: polished stainless steel; anthracite; black plastic; stainless steel wedge wire grating; galvanised steel; and cast iron. HexDrain® B 125 and RainDrain® B 125 channels are designed for driveways and small, private car park applications. • Domestic slot drainage HexDrain Brickslot and RainDrain Brickslot B 125 are designed for domestic projects where discrete channel drainage is required in paving and threshold drainage applications. • Threshold drainage StepDrain is a slimline, unobtrusive level threshold drainage system, fitted with stainless steel Heelguard™ grating. Doorway Drain provides unobtrusive, high-quality level threshold drainage. DrainMat performs the function of traditional matwells, but eliminates the risk of water ponding at domestic entrances. Threshold Drain is a discreet 60mm-wide domestic level threshold door drain. Systems are compliant with Part M and Section 4 Building Regulations. • Landscaping systems GravelGuard and GroundGuard are ideal for use in domestic driveways and paths, where a natural grass or decorative aggregate finish is required to complement the landscape, whilst also reducing the risk of potholes, rutting or grass damage.

ACO RainDrain® channel drainage

ACO HexDrain® – high-quality, high-strength, light-duty channel drainage with Heelguard™ grating

ACO RainDrain® B 125 driveway channel drainage

ACO HexDrain® Brickslot channel drainage

ACO GroundGuard ground reinforcement

FOR MORE ILLUSTRATIONS www.externalworks.co.uk  

82 CHANNEL DRAINAGE

EXTERNAL WORKS Marshalls plc Combined kerb & drainage systems

Contact t: 0870 444 6217 f: 0870 442 7725 esi.marshalls@web-response.co.uk Web www.marshalls.co.uk/commercial Address Marshalls plc Landscape House Premier Way Lowfields Business Park Elland HX5 9HT Additional entries Priora permeable block paving ‰ 74 Linear drainage systems ‰ 78 Kerb systems ‰ 84 Modal concrete paving ‰ 106 Concrete paving systems ‰ 108 Concrete block paving and setts ‰ 114 Recon walling ‰ 118 Natural stone ‰ 124 Natural stone facades ‰ 126

Marshalls’ Beany system is a trusted, reliable and highly effective road drainage solution. It has the advantages of a combined kerb and drainage system and the benefits of a high-quality, robust concrete product. • Beany Block® high-capacity system Beany Block® is a high-capacity combined kerb and drainage system that has been on the market for over 30 years. It provides a flexible, cost-effective solution to highway drainage requirements. When installed, it is strong enough to withstand loadings imposed by both road and construction traffic. • Mini Beany® medium-capacity system Mini Beany® is a combined kerb and drainage system evolved from Beany Block®. Its flow rates and robust concrete construction are suited to medium-capacity road drainage requirements. • Mono Beany® compact system Mono Beany® is a low- to medium-capacity, onepiece combined kerb and drainage system. It is simple and straightforward to design, set out and install. It comprises high-strength M-Tech concrete cast around a plastic core, giving good strength, aesthetics and hydraulic flow rates.

Technical support Engineers can order Marshalls’ Drainage Design Guide or use a free, no-obligation design service.

Conservation Mini Beany® – Bedford

Mono Beany® – A21, East Sussex

Beany Block® – Glasgow

Beany Block® – Newcastle

Mono Beany® – A259

  www.externalworks.co.uk FOR DETAILED INFORMATION ON FEATURED PRODUCTS AND SERVICES