These soakaway crates (Polystorm) clip together to form a load-bearing underground water storage/attenuation system. Help & Advice. Millions of homes in the UK face the threat of flooding every year, with much depending on seasonal weather conditions and water levels during that period. SDS identifies and delivers engineering solutions that enable global water infrastructure to operate sustainably and to its maximum efficiency potential. VAT. 35. The Polystorm geocellular range is designed to provide retention, attenuation and infiltration at a variety of depths. Get in touch 01753 652 555. The void created by the crates can then. Brett Martin has provided its StormCrate55 modular crates for an underground attenuation tank designed to control stormwater and address excessive rainwater run-off as part of a prestigious development of homes in central Scotland. GEOlight® provides green residential amenities with additional run-off capacity – The Quarry, Erith. Results and discussion. 855 Litres. 354mm in length, 708mm in width, 150mm in height. Recyclable. Crate Class: Light/Medium Duty. 1. Rain Bloc 60 Tonne Soakaway and Attenuation Set with Silt Trap & Lid - 0. 4m in size. Stop water pooling in one easy step. 00 7,500 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. This can be as simple as a buried layer of gravel or by using a stormwater crate. The effects of climate change are creating an unprecedented demand for Sustainable urban Drainage Systems (SuDS). Inc. Increase in linear attenuation coefficients was observed, showing that changing crystal structure changes linear attenuation coefficient of a material. 420mm. 60 £54. They are one wonderful solution for drainage and places where infiltration is possible for the existence of silt, sand and gravel you can. Wavin AquaCell stormwater infiltration and attenuation tanks can be constructed using these modular cells or units to help manage storm water run off and reduce flood risks. Sold Complete With Clips and shear connectors. 5m x 0. CORE Drive stabilises gravel for many applications: paths, driveways, car parks & more. Permeable Paving Slab. £69. Brett Martin’s Sewer drainage range includes solid pipe and fittings in 200mm, 250mm, 315mm and 400mm diameters. An attenuation tank is essentially a large container that acts as a buffer to store excess rainwater in the event of a storm and remove the risk of flooding of a residential area. A soakaway crate is designed to send water into the soil, while an attenuation tank stores and redirects it to a watercourse (river, lake or reservoir). Attenuation Tanks. Locate and compare Industrial Crating & Crates in Coquitlam BC, Yellow Pages Local Listings. This crate is supplied with 4 x clips F. As the crate structure fills, water begins to exfiltrate from the tank into the surrounding ground. Large net storage volume of 287 litres per crate (302. A) CRATE SYSTEM. Can be used as part of an intelligently engineered hybrid system with Polystorm Xtra and Polystorm Lite. Polystorm Crate. Rainsmart Ellipse Soakaway Crate Assembled . Large attenuation tanks are formed from modular soakaway crates as per the example in the image below. 5kg. A flow equalizer is required when the velocity profile is not uniform. 90. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. Manufactured from recycled polypropylene, the Aquavoid Metro system comprises an interlocking modular cell design which sits on a purpose designed baseplate and can be stacked to create different void sizes. excl VAT (Each) Buy Now. APPLICATIONS • Landscaped areasAttenuation Tanks. Come on site with us as we film a large attenuation tank installation for a new housing development - Lakeview Quarry in Somerset. It enables engineers to create a blue or green roof drainage layer that gives architects the design flexibility required to create imaginative, multi-functional open. Soakaway Crates, also known as Attenuation Crates, Storm Cells or Storm Crates, are interlocking crate systems that allow surface water to be stored and gradually released back to the ground or sewer network slowly. Our skilled site crews offer many years installation experience with a wide range of attenuation tank units including Aquacell, Graf and Polystorm. Weight. 00 7,500 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. 00 incl VAT. Select the right Modular Cell Polystorm Lite – PSM2 Polystorm Lite has been specifically designed for non-trafficked applications. CIRIA RP992 The SuDS Manual Update: Paper RP992/21 Guidance on the Maintenance Plan 4 Inspections should comply with all relevant Health and Safety legislation (Health and Safety at Work Regulations, 1999). Polystorm Lite – PSM2. 3. Brett Martin Storm Crate 55 Tonne 1200mm x 600mm x 347mm (0. We can also offer an installation service if. the process of making something less or weaker: The airport has undertaken a noise attenuation programme. £69. These leave virtually the whole space open to be filled with rainwater and are therefore much more effective. Search. Simple and quick installation method. Specifically, in clinical practice, during the myocardial perfusion PET and SPECT scan, a CT attenuation correction (CTAC) scan is acquired that visualizes the heart. In areas where water storage is not a consideration. Dimensions: 1000mm x 500mm x. Sadly, there is little we can do to help maintain these installations. All the components are contained in a single crate, without any separate chambers. In areas where water storage is not a consideration. Anthony is a Chartered Civil Engineer with considerable experience in water, hydrology, flood risk and drainage, particularly in relation to SuDS design and hydraulic modelling. Buy and sell items locally or have something new shipped from stores. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. Latest news & updates for EcoBloc Maxx Crate for Attenuation and Infiltration tanks. The RAINBOX® 3SR crate, manufactured by JDP's Tessenderlo Group partner DYKA, consists of two half-boxes and a centre plate; assemble these prior to their installation within the crate structure. attenuation tank using graf ecobloc flex project graf standard details drawn : checked : db mc date : scale : 01. A stormwater attenuation tank is designed to collect and store excess surface water run-off from a large storm event. Code G4110M3K; Brand Graf; £415. Soakaways and attenuation crate systems have developed over the years. (1) From £ 0. 50 each. Using the crate stormwater is collected before being held in the crates where water is held and then can either disperse into the. 5m x 0. Attenuation tanks Green roofs (*) SuDS Manual Page References will be included once the SuDS Manual update has been completed. As part of a heavy water or. ground and the surface area of the crate structure sides and base). ACO StormBrixx is a unique and patented plastic geocellular stormwater management system for attenuation and soakaway (infiltration) usage. 2m3 per crate. Rain Bloc Stormwater Attenuation/Soakaway Crate. These water attenuation/soakaway storage crates are lightweight and modular. Systems permit cleaning, filtration, and dissipation of stormwater that has gathered. Quick view. com : CORE Water | Soakaway Crates | Attenuation, Infiltration, Stormwater Retention Crate for Residential and Commercial Projects | Perfect for Flood Mitigation,. If you have already calculated your storage volume, you'll need that figure and the below: An idea of your tank dimensions. Stormwater attenuation and infiltration/soakaway crates . Attenuation Tank Crates are containers designed for the storage of rainwater. The modular cells combine to provide water storage structures to help with localised flood. 95% void ratio giving a holding capacity of 0. 11 ex VAT. The crate structure is surrounded with a permeable non-woven geotextile to prevent any ingress of silt to the crate structure. This enables Polypipe to supply fully integrated below ground drainage elements, which may be composed of a number of differing systems, each chosen to suit the proposed location. Tree Root Protection. uk , buy now from Attenuation Tank Crates or call the sales office on 01255 258525. They allow surface water to be stored in one location and gradually released back to the ground, a bit at a time, at a pace the ground can handle, rather than in one sudden deluge, as happens dur…Stormwater attenuation and infiltration/soakaway crates ACO StormBrixx is a unique and patented plastic geocellular stormwater management system for attenuation and soakaway (infiltration) usage. But the main object of installing large soakaway attenuation crates in underground is to allow water infiltrate into the surrounding soil slowly. 4m3 per crate. Residential developments. There’s lots to consider when sizing a tank so we’ve put together this guide to help you choose one that suits your requirements. Cover depth. Visual and maintenance access can be achieved when used in conjunction with Polystorm Access & Polystorm Inspect. The key element is a flow control chamber to regulate the amount of water. 01. Attenuation is the term used to describe the reduction of a force, effect or value. Our Aquacrate 400 attenuation is available for Supply & Install or Supply only. Soakaway crates are available from our depots in Yorkshire, Cumbria and Warwickshire. When using a crate system, be sure to level the bottom of your hole and layer it with shingle or sharp sand that’s compacted down. The StormCrates are designed to be stacked together to create a. Hydrocell Soakaway Crate 62 Ton. Rainsmart Soakaway Crate Assembled - Heavy 65 Tonne . It can also be a useful way of harvesting water for other uses such as gardening, car washing and toilet flushing. 5L per crate. Applications. The first is the base while the. Allied to SDS SYMBiotIC™ smart monitoring and control these devices protect nature-based solutions from the impacts of excessive or. 19m3 per crate. The ACO StormBrixx access chamber module allows for a drain-down facility as part of routine maintenance and features pipe connections for outlets up 350mm in diameter. As a simple concept, it works like this. In “hybrid” storm management systems SDS engineered water storage and treatment devices below-ground combine with, enhance the performance and extend the lifespan of vegetative SuDS materials above-ground. High void ratios can be achieved to provide a suitable. The AquaCell range can be used as either a temporarystorage tank or as a soakaway, and is suitable for applications including landscaped areas, parks, domestic. Find high-quality products at unbeatable prices. After installing soakaway crates, they can be combined with waterproof pipework and geotextile to develop an attenuation system. Attenuation is the term used to describe the reduction of a force, effect or value. Sub-total £0. “ attenuation in the volume of the sound”. The crates are ideal for soakaways and attenuation tanks specified by planning and building control. The crate structure is surrounded with a permeable non-woven geotextile to prevent any ingress of silt to the crate structure. Liked by the question poster. What are soakaway crates/attenuation tanks? Soakaway crates, also known as attenuation tanks or stormwater crates, are interlocking crate systems that allow surface water to be stored and gradually released back to the ground or sewer network slowly. If you live close by. COMMERCIAL SEWAGE TREATMENT PLANTS. Hydrocell Soakaway Crate 62 Ton ( 1 000mm x 500mm x 400mm per crate) . This Brett Martin StormCrate55 is a modular cellar crate system designed to be used as attenuation cells or for soakaway applications. Delivery. Stormwater Retention, Attenuation & Infiltration Crate. 00. Specialists in stormwater management and rainwater harvesting systems, SCP Water Management Ltd. 3. The concept of trees being used in a street or carpark setting. £30822. co. Geocellular attenuation tanks or attenuation crates are also extremely space efficient, with a typical surface water holding capacity of 95% or above. Attenuation Tanks are preferred over alternative methods such as soakaway crates. Stormcell ® is a high-capacity, low-maintenance modular stormwater and surface water storage system that can be customised to suit shallow, deep or irregular sites. Buried 0. The void in the crate holds the stormwater during heavy ra. Used in landscaped areas, or in trafficked areas up to a Gross Vehicle Weight (GVW) of 30 tonnes. The crates are a single piece and can be easily maneuvered, stacked and placed. Soakaway are designed and constructed in a very similar way to attenuation tanks and use the same polymer crate system to create the void. Explore our wide range of durable and efficient products and make your selection today. A soakaway size of 1m3 is sufficient to drain a roof area of approximatley 50m2 under normal ground conditions. CF Civils & Groundworks Ltd have become specialists in crate system design, supply and installation as well as the integration of geo membranes for. It enables engineers to create a blue or green roof drainage layer that gives architects the design flexibility required to create imaginative, multi-functional open green spaces at roof or podium level. Domestic gardens. £482. The CORE WATER crate is a step forward in drainage technology; advancing from the old-fashioned, inefficient soakways filled with hardcore and building waste, the crate provides a safe and intelligent solution to rainwater management. MWS158 Polystorm-R PSM1A Modular Water Storage Unit 1000x500x400mm (61T/m2 Loading) c/w PSMCLIP. The AquaCrate decreases the inconvenience of flooding during heavy rainfall, with rainwater “cleaned” by the geotextile surround. 25m3 of water. Ask us a question WhatsApp Message. This is provided free of charge from JDP Technical Support. Attenuation & Soakaway Crates. Add to Basket. Attenuation & Soakaway Crates. 19 various@a3 do not scale - if in doubt ask this document is supplied in strict confidence and must not be lent, reproduced or disclosed to any third party without the written consent of graf uk limited notes:-Rainwater Soakaway Crate Geocellular Attenuation Tank 200L Underground Rain Water Storage Tank About Us Shenzhen Doctor Rain is a professional manufacturer for Geocellular Modular Rainwater Harvesting Tank System ( soakaway crate / attenuation crates / infiltration tanks), established in 2013, with two large plants in Songgang of. This allows any construction site to release water at a rate that drains can adequately handle, thereby preventing a flood. VAT. 22 ex VAT) View Details. Loading type. StormCrates are modular geocellular units which are used predominantly as below ground storm water attenuation, surface water infiltration and soakaway systems. Save up to 80% of freight costs with EcoBloc light. Select a suitable Naylor liner: If a permeable infiltration system is required choose a single layer of Naylor GTSoakaway/Attenuation Crates. This capacity can meet the demands of most large projects for stormwater attenuation projects. So no, they serve different purposes. • Project Explore, Steetley - Attenuation Pond Lining (15,000m²) Stormwater Management Limited Fleming Road Harrowbrook Ind Est Hinckley Leicestershire LE10 3DU Tel: 01455 502222 Fax: 01455 502223 Email: sales@storm. . The Polystorm geocelluar system can also be integrated with Permavoid systems. These below-ground rainwater attenuation crates are an ideal solution for surfaces like sand, silt, gravel etc. 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. Installation Depth: 4. The HydroChamber is an arched chamber attenuation system designed specifically for building underground storage tanks for stormwater runoff in attenuation and soak away applications. VAT toggle. AquaCell Core-R has been designed for use in deep applications, subject to regular and heavy traffic loadings, e. Attenuation Design. Dimension: 1000mm x 1000mm x 400mm. The honeycomb design is extremely strong allowing vehicle loading with minimal cover. StormCrates are designed to be used as attenuation tanks as well as infiltration. 9 cubic metre set includes 3 Rain Bloc soakaway crates and enough membrane to cover the crates on all sides. From £269. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. Using the crate stormwater is collected before being held in the crates where water is held and then can either disperse into the ground or be fed back into the mains network. The inlets/outlets are located in different positions and the crate structure fills when the flow rates exceeds the agreed discharge rate. Let P1 P 1 be the power at z = l z = l. From £3,669. 01753 652 555 CORE TRADE. £27. An attenuation crate stores the water and redirects it to somewhere else. Rain Bloc Stormwater Attenuation/Soakaway Crate. The Rain Bloc compact 300 soakaway crate can be used in both infiltration and attenuation systems. £6. Anthony is a Chartered Civil Engineer with considerable experience in water, hydrology, flood risk and drainage, particularly in relation to SuDS design and hydraulic modelling. GT 500 Attenuation Tank LinerThis product is shipped direct from the manufacturer: 2-3 day lead time. We recommend that your groundwork contractor undertakes a percolation test on your soil to calculate the correct number of. This removes the. 11. Weight : 15. 0121 351 3230. Check in your local branch. Features & Benefits: Graf Rain Bloc Stormwater Attenuation Crate - 3. MAST Technologies 8380 Camino Santa Fe, Suite 200 San Diego, CA 92121 Phone: (858) 452-1700 / Fax: (858) 452-17023. Depending on environment conditions and the desired storage capacity, these blocks can be installed. 13. Attenuation. Crates come in different strengths. Crate size 1200mm (L) x 600mm (W) x 420mm (D) (3. Designing a Crate System for Attenuation. This document describes the products from Polypipe Water Management Solutions for. Stage 2 - The filtered stormwater enters the pre-built geocellular crate system at a size that will hold the required level of stormwater. 21 do not scale - if in doubt ask this document is supplied in strict confidence and must not be lent, reproduced or disclosed to any third party without the written consent of. Attenuation storage volume 4 Figure 22 41 Required attenuation storage 4 11 42 Hydrological rainfall zones for the UK 4 Figure 23 42 Long term storage volumes 4 12 43 Typical silt trap 4 Figure 24 43 Percolation test for designing a soakaway system 4 Figure 25 44 Percolation test for designing a soakaway system - worked example 4 Figure 26 45 StormCrate is a cellular stormwater attenuation crate. The key difference is the lack of impermeable geomembrane liner. The modular cells combine to provide water storage structures to help with localised flood. Stackable crates. StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. 00 out of 5. Largest range of Soakaway Crates and Attenuation Cells for Drainage in the UK. FREE Delivery. With a reservoir volume in excess up to 97 %, it is a market-leading product. Aquacrate Future Build Supplies Ltd 6 x 190 Litre Storm Crates for Soakaway Attenuation, Underground Storm Water Drainage 1000 x 500 x 400 (mm) Suitable for Pedestrian, 62 Tonne. 4m3 per crate. 00 ex VAT. MANAGEMENT Martin’s StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. GT 500 2000 gauge Impermeable Tank Line Membrane. Latest news & updates for RainBloc Crate for Attenuation and Infiltration tanks. 00 £68. Waste. 54 Excl. With more than 100 locations, including a large number of US and Canada stores, Crate and Barrel is your destination for on-trend. 00. This reduces the cost of a metered water supply and creates a more sustainable water management system. 54 Excl. 50 each. Buy Polypipe Polystorm R (PSM1A) Soakaway Crate / Attenuation Cell Online at an Amazing Low Price From Easymerchant. As a key part of our overall SuDS offering, our Klargester AquaHold attenuation range offers many benefits over traditional crate systems. COMMERCIAL. 00 ex VAT. Not only are they more efficient with a larger void capacity (95%) they also have superior structural integrity. 2. To fix this, we will implement attenuation. 00. GREASE MANAGEMENT. The plastic driveway grid, with its stability and adaptability, revolutionises the way we approach these projects. co. It is supplied fully assembled, which makes installation much easier to plan and complete. Stormwater Attenuation Crates for Stormwater Attenuation Tank System. 17. Attenuation Tanks. Legal requriements and building regulations around drainage are becoming ever more stringent. This StormBrixx product contains: 2 x 0. O. Attenuation crates work using a very simple process, very much in a similar way to attenuation tanks. There are 5 main variations to choose from, each one offering different features benefits depending on your drainage need and installation environment. Four StormCrates per 1m³; 95% void ratioATTENUATION CRATES. This Polypipe PSM1A soakaway crate, also known as Polystorm-R is designed for not only soakaway applications but also for attenuation cells. This can be caused by flow hugging one side of a pipe due to flow around an elbow or flow through a partly. The crates hold water when there is a sudden large flow in a storm to alleviate the. 4 Crates per 1m Cubed. 5 metres from the boundary. Grid Size: 50cm x 50cm x 4cm (0. Osma Black Aquacell Eco 1000mm x 500mm x 400mm Unit Non-Trafficked. com. It is ideally suited to deeper applications and can accommodate a wide range of traffic loadings, from pedestrianised areas to large HGV parks. At present FreeFlush is proud to brought two Soakaway crate alternative, comprising two models of Rainwater Soakaway Attenuation Crate Packages. Quantity. Features & Benefits: Storage capacity of 290 litres. AquaCell Core-R has been designed for use in deep applications, subject to regular and heavy traffic loadings, e. FREE shipping and FAST delivery. Attenuation crates need to be designed to minimize. SDS GEOlight® is widely recognised as the UK’s market leading water storage and attenuation / infiltration system. The crates interlock to create a substantial below-ground holding chamber or to facilitate stormwater infiltration into the adjoining earth. Rain Bloc Stormwater Attenuation/Soakaway Crate. Inc. In addition, in this study, a more recent method of measuring the attenuation coefficient, known as the depth-resolved approach [42,43, 46], was used, while in other studies on the evaluation of. The crates are designed to be simply and easily stacked together to create a below ground storm water holding tank or to allow the infiltration of storm water into the ground around them. Code G4110SC; From 3 reviews £45. £204. DOMESTIC SEWAGE TREATMENT PLANTS. See examples of ATTENUATE used in a sentence. Stormbloc ® Extra. Attenuation Tanks. However, an attenuation tank will hold the water and allow it to be channelled to a different place. 09-11-2023 What are the different types of flood defence systems in the UK? by Graf UK. attenuation tank crates (specification and design subject to site & project requirements, by others) juta netex 300tt geotextile juta netex 300tt geotextile juta hdpe 0. This product can bear up to 62 tonnes and is 1m x 0. A stormwater attenuation tank is designed to collect and store excess surface water run-off from a large storm event. . Add to basket. As well as attenuation, the AquaCrate can also be used for greywater storage. ACO RoofBloxx Reservoir Tray Wall Extender - 60mm. Precast Concrete Tanks offer a low maintenance solution. Stormwater crates are installed below ground and are used to control the flow of surface water when there is extreme rainfall. g. Register | Login. Toggle. The Rainbox 3S boxes arrive flat-packed for more efficient shipping and less CO2 emissions. This is placing drainage at the heart of construction projects, and with the sector kicking into gear following a challenging 2020, Mark Halsall, National Manager – Storm Water Control at ACO Water. Each crate is 0. So you'll need 4 alternators per 3 motors. Using an Attenuation Tank gives you the ability to store large quantities of water from a wide surface area and redistribute it over time. They are designed to be wrapped in a non-woven geotextile membrane to ensure that water is cleaned as it enters the crate. cars and HGV 's. Crate size 1200mm (L) x 600mm (W) x 420mm (D) (3. RAINBOX 3S is a geocellular crate that can be used for attenuation or soakaway purposes. (€4,213. This robust crate creates a structural void in the ground to allow water to flow in from surrounding subsoil and helps to alleviate flooding. 3 Cubic Metre . We can also offer an installation service if required. The Infiltrator ® Chamber is a pre-manufactured open underground unit that acts as a direct replacement for conventional storm water and waste water attenuation. The Polystorm 8 Step Guide is designed to provide guidance to design the perfect system for retention, attenuation or soakaway at a variety of depths. 99 GBP. This below ground rainwater attenuation tank is an excellent solution for drainage areas for which SuDS are required. Latest Case Study: Severn Trent Water Following an evaluation from the New Products CoP Group Waste team of Severn Trent the stormwater management system by Triton Stormwater Solutions has been approved for use within Severn Trent on both AMP 6 Capital Projects and Developer Sites. Compatible with ACO surface water drainage, downpipes, and roof outlets. Inc. An offline attenuation system is where the inlet/outlet is connected to the same manhole/inspection chamber. * Dimensions 1200 x 600 x 420mm Gross Volume 302 L Storage Volume 287 L Void Ratio 95% Materials Recycled Polypropylene Recyclable 100% Approx. The flexibility of the Rain Bloc makes it ideal for use in both. Stormwater Attenuation & Soakaway Crates Construction projects, particularly involving stormwater management, are often impacted by concerns for the environment and new legislation. Estimated Delivery 5 - 7. Buy it now. Its flexible modular structure is light but strong, making it ideal for use beneath areas such as roads, car parks and industrial areas. The most common approach to creating an underground storage tank is to use; stormwater attenuation crates, impermeable geomembrane and geotextile to make a stormwater attenuation tank. The Pelican Attenuation system is perhaps the UK's first complete attenuation tank system kit. Compressive Strength: Maximum 55 Tonne. Ideal for retention, attenuation or soakaway applications/schemes with a suitable geomembrane or geotextile. Rainsmart Soakaway Set Assembled - Heavy 1 Cubic Metre . A few pointers are noted as follows: EcoBloc Flex is a modular geocellular unit which is used as a below ground stormwater attenuation or soakaway tank. Code G4110SC; Brand Graf; £57. The water stored in the attenuation tank is wrapped in membrane to stop soil particles from entering. Get in touch 01753 652 555. Domestic Soakaways are typically 1-3 m3 so please select the number required. So, what are the differences between stormwater storage crates for filtration and attenuation? Let’s find out. Attenuation Storage Tanks - Multifunctional Benefits. SEPTIC TANKS. Buy premium-quality soakaway crates from Build Plumb Plastics. Our industry leading products can be deployed in Infiltration / Soak-away, Permeable and Impermeable Attenuation systems, which makes their range of applications incredibly. attenuation can be allowed closer to building foundations if it can be demonstrated that it is safe to do so. Plastic & Clay Drainage. It can hold 0. In this video we take yo. Surface water attenuation is one of the key actions to move in this direction. Maximum installation depth of 5m. Pluvial Cube and Polystorm Attenuation Crate Systems to install underground stormwater storage tanks. Attenuation systems are large storage facilities included in a drainage system so that rainfall from storm events can be stored onsite and slowly discharged instead of discharging the whole storm event as it happens. Set your delivery address or collection branch to see what's available. Documentation. Soakaway are designed and constructed in a very similar way to attenuation tanks and use the same polymer crate system to create the void. Delivery. The crates are manufactured from durable plastic which clip together easily to form a box structure. Top hats are ideal for use for when a pipe enters an attenuation tank and other applications where a 110mm pipe comes up against a perpendicular surface, and are suitable for use with jubilee clips or bonding tape. Access for inspection and maintenance is via Stormbloc ® Inspect chambers and the channels in the blocks allow access for CCTV and cleaning to ensure that the storage volume of the system isn’t reduced by the build up of silts. 12ft x 12ft. These strong, long lasting and eco-friendly crates are ideal for use in residential, commercial, industrial or retail areas including car parks,. Not only are they more efficient with a larger void capacity (95%) they also have superior structural integrity.