As a simple concept, it works like this. 190L crates supplied if multiples/ larger amounts ordered e. 5 out of five star rating on Trustpilot. DOMESTIC SEWAGE TREATMENT. Attenuation & Water Management Solutions. 0m x 0. MANAGEMENT Martin’s StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. The Wavin Core-R Modular Unit is part of the AquaCell range of geocellular systems that is a fully tried and tested, BBA approved, modular technique for managing excessive rainfall. 42m3 StormBrixx crates (in four pieces) 8 x side panels for lateral support. 00. It is supplied fully assembled, which makes installation much easier to plan and complete. It is made from 100% recycled plastic. attenuation; axe; boil; contraction; damp; fall off; fall off a cliff idiom; falling; falling-off; foreshorten; rightsizing; roll back something; rollback; run someone/something down;. 0121 351 3230. Originally soakaway solutions were thought to be 'fit and forget' and were quite often buried. Find high-quality products at unbeatable prices. Add to basket. The concept of trees being used in a street or carpark setting. Description. delivery: 2 working days. The modern option is to use dedicated plastic boxes, known as soakaway or attenuation crates. An attenuation tank follows a very simple process to receive, store and release excess rainwater: When there is heavy rainfall that the local systems will struggle to cope with, an attenuation tank is ready to take in the water to help reduce the likelihood of flooding. Designing attenuation storage for redeveloped sites The authors This factsheet has been prepared by Anthony McCloy of McCloy Consulting. Rainwater Soakaway Attenuation Crate Package – EcoBloc Maxx is one revolutionary well-built infrastructure to go well with any property. 00 Graf Infiltration Tunnel Kit for Soakaways, Attenuation and Wastewaster. AquaCell Core-R has been designed for use in deep applications, subject to regular and heavy traffic loadings, e. Attenuation is an intrinsic property of a medium. 38 m³. Inc. The water stored in the attenuation tank is wrapped in membrane to stop soil particles from entering. You can read about them in more depth in our 'what is a soakaway' explainer. Dimensions: 1000mm x 500mm x. Used in landscaped areas, or in trafficked areas up to a Gross Vehicle Weight (GVW) of 30 tonnes. View details. Permavoid is a geocellular sub-base replacement system which has been specifically designed and tested to provide stormwater treatment, retention, attenuation or infiltration at shallower depths. Lightweight and simple to install. This removes the. Integrated inlet and outlet. £36. Storage capacity of 217 litres. The attenuation liner is completely wrapped around the water storage tank to create a watertight skin. 36 inc VAT) KLARGESTER AQUAHOLD SM09 - 9,000 litres. 3 Cubic Metre . The installation is warrantied for 30 years as the membrane is wedge welded and the joints air tested. Maximum installation depth of 5m. see more. Rain Bloc Stormwater Attenuation/Soakaway Crate. Engineered from top-tier recycled polypropylene, this module boasts exceptional strength and remarkable water permeability while offering an expansive storage capacity. They are modular, so multiple crates can be used for a soakaway system capable of. Brett. 72 £57. SEPTIC TANKS. Includes unperforated, perforated and half-perforated pipe in diameters from 110mm-600mm. From £3,669. The Polystorm geocellular range is ideally suited to deeper applications and can accommodate a wide range of traffic loadings, from pedestrianised areas to large HGV parks. For attenuation systems, a sealed geomembrane is wrapped around the tank to create a watertight seal and a protection fleece is then wrapped around to protect the geomem-Find what should be considered when installing soakaway crates. Rain Bloc 60 Tonne Soakaway and Attenuation Crate - 0. Vortex and nonsymmetric velocity profile caused by piping arrangement. It can hold 0. Add to Compare. Attenuation. 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. Register | Login. The crates interlock to create a substantial below-ground holding chamber or to facilitate stormwater infiltration into the adjoining earth. 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. Attenuation crates need to be designed to minimize. VAT. The system can be placed deeper in the ground. 88 ex VAT. Polystorm-R has been designed to provide surface water retention, surface water attenuation or surface water infiltration as a soakaway solution at a variety of depths in trafficked and loaded areas. Permeable pavement with infiltration close to house foundations Further evidence that rainwater can be allowed to soak into the ground close to building foundations is given in a response toAttenuation crate systems offer a cost-effective solution for storm water management, dealing with large volumes of surface water and releasing at a controlled rate back into the drainage system. Geocellular crate for soakaway (infiltration) or storage (attenuation) applications for surface and storm water. 62’ x 1. Hewitech design, manufacture and install Attenuation tanks. Where ground has good soakage (such as sand/gravel) then the size/volume of a crate type soakaway can be calculated as follows: Volume = Roof area being drained x (50mm rainfall rate per hr/3000). With a 20 tonne per square metre compressive strength it will withstand and support the load of general maintenance vehicles such as grass cutters. Soakaway and Attenuation Crates PSM1A. Spend another £1500 to pay over time with. Attenuation Tanks. The attenuation coefficient, backscatter term, and the image intensity are further analyzed in regions of interest, which have been delineated referring to their pathology counterparts. 3. Get it Thursday, 28 Sept - Friday, 29 Sept. After installing soakaway crates, they can be combined with waterproof pipework and geotextile to develop an attenuation system. Our crates are a step forward in drainage technology; advancing from the old-fashioned, ine˛cient soakways ˚lledA flow straightener can be a tube bundle or an “egg crate,” as shown in Fig. 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. What are soakaway crates/attenuation tanks? Soakaway crates, also known as attenuation tanks or stormwater crates, are interlocking crate systems that allow. 00 £170. Liked by the question poster. Large attenuation tanks are formed from modular soakaway crates as per the example in the image below. ON BACK ORDER - Please contact us for availability and alternatives. Introducing IBRABASE, our eco-friendly shed base grid system, made entirely from recycled plastic. 11. A high-strength option ideal for installation beneath heavily loaded areas such as roads, car parks and warehouse yards. 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. Check in your local branch. Should not be close to another soakaway or in a location where the water may. A stormwater attenuation system provides a cost-effective solution but not all companies have the. Delivery. Stormwater Attenuation Tanks. Excellent filtration and drainage properties for trench lining. Soakaway / Attenuation inspection and maintenance. Documentation. They can be used in trafficked and non-trafficked areas including landscaped, pedestrianised, public open spaces, playgrounds, parking, driveways and access projects. BBA approved. However, an attenuation tank will hold the water and allow it to be channelled to a different place. 00 each. 54 Excl. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. One is EcoBloc Maxx and the other is EcoBloc Light and both are manufactured in Germany from superior quality of medium-density polyethylene or MDPE. They are lightweight storm and surface water management systems. Designed for trafficked and untrafficked areas. 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. Stacked on pallets to save space during transport reducing costs and CO 2 emissions. Get in touch 01753 652 555. The rigid crates are made in black polypropylene (PP) and measure 1200mm (l) x 600mm (w) x 420mm (h) and will hold a maximum capacity of 300 litres gross or a working volume of 285 litres. Attenuation Tanks. StormCrates are modular geocellular units which are used predominantly as below ground storm water attenuation, surface water infiltration and soakaway systems. ACO RoofBloxx is a complete roof attenuation system for blue, green and blue/green roofs. Rainsmart Soakaway Crate Assembled - Heavy 65 Tonne . Large net storage volume of 287 litres per crate (302. 00 out of 5. Code G4110SC; Brand Graf; £57. of. 3 StormCrates per 1m³ storage capacity • Lightweight and easy to install in up to 10 layers • High strength crate with lorry bearing of up to 60 tonnesMax. It can also be a useful way of harvesting water for other uses such as gardening, car washing and toilet flushing. The EcoBloc Flex crates are designed to be stacked together to create a holding tank or to allow the infiltration of storm water into the ground. Help & Advice. These systems are required where there is a limitation to the quantity of rainwater which can be discharged. 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. COMMERCIAL. 8% void ratio, allowing rainwater run off to be temporarily stored and then released gradually, either into the soil acting as a. 9 Cubic Metre . 00 £68. This document describes the products from Polypipe Water Management Solutions for. Inc. Reviews. Phone: UK Phone: 0207 1646706. Rainwater Diffuser: The rainwater diffuser collects surface water into the voided subsoil aggregate in a permeable or impermeable infiltration system. Attenuation crate systems offer a cost-effective solution for storm water management, dealing with large volumes of surface water and releasing at a controlled rate back into. . The Rainbox 3S boxes arrive flat-packed for more efficient shipping and less CO2 emissions. Our attenuation crates are light, easy-to-assemble and they connect together, which means you can create your required structure. Polystorm Cell Modular Soakaway and Attenuation Crates PSM1A, designed to hold water during a storm to alleviate flooding. 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. 09-11-2023 What are the different types of flood defence systems in the UK? by Graf UK. 300 to +. Next Day Delivery. The StormMaster Heavy Duty Crate is suitable for car parks, general duty and traffic use. 4m in size. Our stormwater attenuation and soakaway crates are built to last due to the quality material we use and come with a 50-year design life. Not only are they more efficient with a larger void capacity (95%) they also have superior structural integrity. The key difference is the lack of impermeable geomembrane liner. 24 Carefully place the attenuation units onto the base panel (following the procedure 3. What is StormCrate? StormCrate is a cellular stormwater attenuation crate. Contact Us today 01616671241. These soakaway crates (Polystorm) clip together to form a load-bearing underground water storage/attenuation system. Search. Our RecoCrate range of soakaway crates are lightweight modular cells with a high void ratio which can be used for creating underground water storage systems and attenuation systems for landscaped areas. Soakaway crates are available from our depots in Yorkshire, Cumbria and Warwickshire. Stormwater storage crates are perfect for filtration or attenuation. 26 (£30. Attenuation is the term used to describe the reduction of a force, effect or value. The crates are. . 285 m3), please also consider the stacking arrangement : No. 5m x 0. Stage 2 - The filtered stormwater enters the pre-built geocellular crate system at a size that will hold the required level of stormwater. C. Rain Bloc 60 Tonne Soakaway and Attenuation Set with Silt Trap & Lid - 0. 95 (£48. 300 to +. 6mm geomembrane (light duty/ clean water) juta gph 1mm geomembrane (heavy duty/ hydrocarbon sites) nb - attenuation tank design including depth, size & volume, inlet/ outlet. 99 GBP. Soakaway Crates: AquaCell Core-R 60 Tonne Wavin Soakaway Crate - 200 Litres. Attenuation Crates Drainage anti-flooding blocks with 300-litre capacity for rapid drainage of land. The EcoBloc variants maxx and Inspect flex still offer a reservoir coefficient of 96 % despite their high load-bearing capacity. Stage 3 - Stormwater is held in the tank. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. This is because the way a soakaway works is that it is a hole dug into the ground, filled with a material such as rubble or an attenuation crate, which allows surface water the extra soil surface area to percolate back into the earth. Grid Size: 50cm x 50cm x 4cm (0. Designing attenuation storage for redeveloped sites The authors This factsheet has been prepared by Anthony McCloy of McCloy Consulting. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. Both for domestic and commercial applications, modern soakaway attenuation crates are in use for the purpose of holding rainwater for a long period primarily. 5m x 0. Not only are they more efficient with a larger void capacity (95%) they also have superior structural integrity. Hydrocell Soakaway Crate 62 Ton. AquaCell Core-R has been designed for use in deep applications, subject to regular and heavy traffic loadings, e. 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. 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. Attenuation & Soakaway Crates. The flexibility of the Rain Bloc makes it ideal for use in both. What are attenuation crates? Attenuation crates, also known as soakaway crates, are used to control the level of surface water and reduce the risk of flooding. Product Details. SDS identifies and delivers engineering solutions that enable global water infrastructure to operate sustainably and to its maximum efficiency potential. The outer surfaces of the crates should be wrapped in a geotextile membrane. This product can bear up to 65 tonnes and is 1m x 0. 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). £6. 60 £54. Expressing attenuation storage volumes as m3 2for each m of developed site area Approaches to determining storage volumes Understanding the fundamentals of attenuation storage design Prior to undertaking storage calculations it is important to understand a few of the basics of attenuation design. Its flexible modular structure is light but strong, making it ideal for use beneath areas such as roads, car parks and industrial areas. FREE Delivery. 11. Description. The surface water run-off is slowed down before it is discharged into the local. For attenuation systems: Position the inflow and outflow connections level with the base of the Aquavoid-Metro structure. Buy and sell items locally or have something new shipped from stores. The NEW AquaCell NG is a sustainable attenuation crate which is faster to install, easier and a more sustainable attenuation tank. In the code for the previous article, moving the light source away from the wooden crate didn’t make the crate appear any darker. 9 Cubic Metre . noun. Car parks & roads. Attenuation Tanks are preferred over alternative methods such as soakaway crates. Buy premium-quality soakaway crates from Build Plumb Plastics. Branch locator. SEPTIC TANKS. Contact Us today 01616671241. g cars and HGV’s. Using the crate stormwater is collected before being held in the crates where water is held and then can either disperse into the. Thrilled to have delivered the first instalment from our huge order of over 1000+ soakaway crates to. Ecomerchant Aquacrate is a geocellular high-quality synthetic rectangular box. The Rain Bloc compact 300 soakaway crate can be used in both infiltration and attenuation systems. This is where our soakaway crates come in. From £269. the process of making something less or weaker: The airport has undertaken a noise attenuation programme. Top hat connector for twinwall inlet/outlet connections of attenuation/soakaway crate systems. We recommend that your groundwork contractor undertakes a percolation test on your soil to calculate the correct number of. Suited to trafficked areas. If you live close. GREASE MANAGEMENT. 8. Aquacrate Future Build Supplies Ltd 12 x Storm Crates for Soakaway Attenuation, Underground Storm Water Drainage 1000 x 500 x 400 (mm) Suitable for Pedestrian & Transport Applications 62 Tonne. We supply 20 tonne crates for pedestrian traffic and all the way up to 100 tonne crates for HGVs and heavy plant traffic. 1000 x 1000 x 400mm (0. A Core Water Soakaway Crate with membrane measuring 800mm x 500mm x 540mm. Sold Complete With Clips and shear connectors. A soakaway size of 1m3 is sufficient to drain a roof area of approximatley 50m2 under normal ground conditions. 99 GBP. Here are the steps required for undertaking a percolation test for foul water soakaways: Excavate a hole – Dig a hole 300mm square to a depth of at least 300mm below the proposed invert, spacing them along the proposed line of the where the soakaway would be. An attenuation system is the best option where local conditions don’t allow for a soakaway. 3 crates per m3 gross volume). Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. £1. Void Ratio: 95%. 5 per m³) This item: CORE Water | Soakaway Crates | Attenuation, Infiltration, Stormwater Retention Crate for Residential and Commercial Projects | Perfect for Flood Mitigation, Stormwater Management System $150. DOMESTIC SEWAGE TREATMENT PLANTS. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. Our soakaway crates clip together to form a load-bearing underground water storage/attenuation system. 3. Once installed, they are combined with a geotextile and waterproof pipework to. Polystorm and Polystorm Lite are lightweight modular water storage cells with a high void ratio that can be used for either attenuation or infiltration of stormwater in residential, commercial, industrial and retail applications. to join crates together to create an attenuation tank. Ideal for linking rainwater downpipes. 4m3 per crate. Dimensions: 1200mm x 600mm x 347mm. 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. 00 7,500 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. In areas where water storage is not a consideration. from €1,914. If the CTAC could be used for calcium scoring, the acquisition of CSCT scan could be omitted, which would decrease the radiation dose to the patient and increase time and cost. Rainsmart's Terravault is a modular cellular confinement crate system that protects tree roots from both vehicular and foot traffic. £69. Why use Aquacrate 400 Soakaway Crate: Prevents extreme peak flows to main drainage and water purification systems. This removes the. Stormbloc ® Extra. McAlpine Plastic Inlet Soakaway For Condense Drainage SOAK1GR 110mm x 300mm x 22mm. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. shows a relationship between the densities (ρ) and linear attenuation coefficients (μ) of BeNi, TiCo, SmZn, TbZn, LaTl, ErAg, GaRu, TbRh, TbTl,. As well as attenuation, the AquaCrate can also be used for greywater storage. This crate has a compressive strengh of 61 tonnes/ m2. To build the attenuation system, the blocks are connected together into a matrix. The modular cells combine to provide water storage structures to help with localised flood. Simple and quick installation method. Aquacrate Future Build Supplies Ltd 12 x Storm Crates for Soakaway Attenuation, Underground Storm Water Drainage 1000 x 500 x 400 (mm) Suitable for Pedestrian & Transport Applications 62 Tonne £545. Contact Us today 01616671241. Osma Rainchannel Drainage Channel With Polypropylene Self. These types of crates are more. AquaCell Eco. They can be used in trafficked and non-trafficked areas. Civils & Drainage. MWS158 Polystorm-R PSM1A Modular Water Storage Unit 1000x500x400mm (61T/m2 Loading) c/w PSMCLIP. The system has an exceptionally high compressive and tensile strength and bending resistance with a proprietary. They have an inlet that allows up to 97% of their occupied space to fill with water. What is the difference between a soakaway and an attenuation tank? A soakaway, as the name. From £269. Contact. 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. In 1996 SDS GEOlight® helped create the foundations on which our company was built, when we completed. Rain Bloc 60 Tonne Soakaway and Attenuation Set with Silt Trap & Lid - 0. Shop our collection of soakaway crates, attenuation crates & tanks here today from reputable brands like Aquacrate, Polypipe, Graf, Marsh Industries & more!. Rainwater Soakaway Attenuation Crate Package - EcoBloc Maxx is one excellent option using which you can stock water either for own use or release the same later based on your choice and requirement. A robust yet lightweight soak-away solution that gives the product a long life as well as making yours easier when it comes to installation. 99 (£37. 5m below the surface connections of any diameter can be made to the system. Polypipe is able to offer multiple systems that may be used to provide attenuation storage within a development. Pluvial Cube and Polystorm Attenuation Crate Systems to install underground stormwater storage tanks. Code G4110SC; From 3 reviews £45. 1. The leading manufacturer for plastic underground modular rainwater crates (soakway crates,attenuation crate, infiltration crates) in China, established in 2013. Experts recommend that the bedrock should not be within one metre of the drainage piping, in order to maintain proper filtration levels. Paired with quality construction supplies, it ensures a foundation that withstands the test of time. 5L per crate. 4m3 per crate) £57. 4m3 per crate. Our soakaway crates clip together to form a load-bearing underground water storage/attenuation system. The ability of a medium to attenuate sound waves at a given frequency is called its attenuation coefficient (denoted by the Greek letter alpha (α). 01753 652 555 CORE TRADE. Stormwater attenuation and infiltration/soakaway crates ACO StormBrixx is a unique and patented plastic geocellular stormwater management system for attenuation and soakaway (infiltration) usage. Underground storage requires a lot of strategic planning to accommodate the many infrastructures that are already in place (piping/cables etc. As a key part of our overall SuDS offering, our Klargester AquaHold attenuation range offers many benefits over traditional crate systems. 84 ex VAT £2. The high void rate (>95%), high compressive strength (to 1000KN/m2) and low resistance to water flow makes SDS GEOlight® an ideal material for cost efficient and maintainable underground water storage during storm conditions. 3 Cubic Metre . 95% void ratio giving a holding capacity of 0. Compressive strength of 83 tonnes/m². As well as attenuation, the AquaCrate can also be used for greywater storage. 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. 5kg. We can also offer an installation service if required. Specifically, in clinical practice, during the myocardial perfusion PET and SPECT scan, a CT attenuation correction (CTAC) scan is acquired that visualizes the heart. 4 m³ with an approx. The crates can be joined laterally by using a Connector (B8251), 4 supplied with each crate, and vertically by using a Shear Pin Connector (B8252), 2 supplied with each crate. 5 metres from the boundary. 30. Surface water is diverted or soaks down into weight resistant crates and from there dissipate into the lower ground clearing. 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. For more information on the Polypipe Polystorm-R PSM1A please discuss your project in more detail with JDP Technical Support on 01228 794426 (Mon-Fri 8am to 4pm) or technical@jdpipes. Welcome to the future of water management with the StormGuard+, the revolutionary attenuation crate provided by Polycon Water Management. VAT. £103. A geotextile removes debris from stormwater while the addition of a geomembrane enables water storage when required. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. Skip to main content. 17. This crate is supplied with 4 x clips F. The modular cells combine to provide water storage structures to help with localised flood. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. IBRABASE Plastic Grids. 00 15,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. 01. As part of a heavy water or. As the crate structure fills, water begins to exfiltrate from the tank into the surrounding ground. In this guide, we will be going step by step through the process of Installing an Attenuation Tank. 54 Excl. The Polystorm geocellular range is ideally suited to deeper applications and can accommodate a wide range of traffic loadings, from pedestrianised areas to large HGV parks. Geocellular attenuation or soakaway crates are also extremely versatile, which means they can be configured around site constraints. If you have already calculated your storage volume, you'll need that figure and the below: An idea of your tank dimensions. This system allows for high-quality root structure of new and existing trees to grow in a healthy and controlled environment. Permavoid 85 and 150 - Product Codes: PVPP85 and PVPP150 Permavoid units are available in two depths, 85mm and 150mm. Complete crate weighs 9kg. proslab. Inc. 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. Faulty devices, like a wireless mouse or headset. 07 ex VAT £7. g. 28 inc VAT Was: £0. But, with us you’re guaranteed a tailored service unique to you and your needs. If you have a special requirement or any questions, please contact us on 01430 430 529 or email enquiries@gwapipes. It can hold 0. Features & Benefits: Draintex Drainage Geotextile Fabric - 1000mm x 10m. To build the attenuation system, the blocks are connected together into a matrix. Code G4110M3K; Brand Graf; £415. Locate and compare Industrial Crating & Crates in Coquitlam BC, Yellow Pages Local Listings. Attenuation crates also known as soakaway crates are used to control the level of surface water in areas that experience heavy rains or floods. £27. 5% void ratio). 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. 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. 100% recyclable. StormMaster is an. 60 £54. Depending on environment conditions and the desired storage capacity, these blocks can be installed. 00 out of 5 based on 1 customer rating. From £6,019. Being experts in Sewage Treatment & Septic Tank Installations, we’re confident we can provide a solution that will last! Enquire Now. Attenuation is the term used to describe the reduction of a force, effect or value. The crate structure is surrounded with a permeable non-woven geotextile to prevent any ingress of silt to the crate structure. Soakaway Crates: Aquacrate 20 tonne soakaway crate - 1m x 1m x 0. Wavin AquaCell units are a tried and tested modular technique for managing excessive rainfall and can be assembled to create an underground structure as either a temporary attenuation tank or infiltration soakaway. If the crates are used for attenuation, the water will drain away slowly into the drainage system. Attenuation Tank Crates are containers designed for the storage of rainwater. cars and HGV 's. However, if you are using them for infiltration, the water will slowly soak away into the groundwater table. Ex VAT Inc VAT.