Attenuation Crates Drainage anti-flooding blocks with 300-litre capacity for rapid drainage of land. The void created by the crates can then fill up with storm water during heavy rainfall conditions. Soakaway Crates: Polystorm 61 tonne Polypipe Soakaway Crate - 1m x 0. Polystorm Lite has been specifically designed for non-trafficked applications. 2019 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:-KLARGESTER AQUAHOLD - Surface Water Storage Tanks Range. This below ground Rain Bloc crate is a simple an effective way to form a Soakaway or attenuation tank. Installation depth of up to 5 metres (16' 4. Simple and quick installation method. It is supplied fully assembled, which makes installation much easier to plan and complete. So, if you’re installing your soakaway beneath a driveway, check the loadbearing strength before buying. Introducing IBRABASE, our eco-friendly shed base grid system, made entirely from recycled plastic. So no, they serve different purposes. 35. Storage Volume: 237. Rain Bloc Stormwater Attenuation/Soakaway Crate. 5m x 0. See the illustration. 5 metres from the boundary. 9. Contact. CORE Water soakaway & attenuation crates are a perfect solution for driveway drainage. The attenuation tank crates/blocks are placed to the predetermined laying pattern, before holes for inlet, outlet and vent pipes are cut to size. Stormwater storage crates are perfect for filtration or attenuation. 285 m3), please also consider the stacking arrangement : No. Stormwater storage crates for filtration Polystorm-R. CORE TRADE. Documentation. Quantity: 25 Year Guarantee. Rain Bloc Stormwater Attenuation/Soakaway Crate. 00 out of 5. Set your delivery address or collection branch to see what's available. 2m3 per crate. Comprising a shallow, high-strength, adjustable. Plastic & Clay Drainage. attenuation tank using graf ecobloc flex project graf standard details drawn : checked : db mc date : scale : 01. Hydrocell soakaway crates are used in soakaways, stormwater retention, attenuation or infiltration applications. Follow these 6 simple steps to install soakaway crates – both quickly and correctly: Step 1 – Create space. 9: Attenuation Rate. The Polystorm geocelluar system can also be integrated with Permavoid systems. Efficient pallet stacking provides quick construction and installation. £482. This is where our soakaway crates come in. In areas where water storage is not a consideration. 01. The modern option is to use dedicated plastic boxes, known as soakaway or attenuation crates. You can read about them in more depth in our 'what is a soakaway' explainer. Product Infiltrator® Chamber Systems. 200 to 299. 3. MANAGEMENT Martin’s StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. Answered 6th Aug 2023 Liked 6. This document describes the products from Polypipe Water Management Solutions for. Attenuate definition: to weaken or reduce in force, intensity, effect, quantity, or value. Attenuation Tanks are preferred over alternative methods such as soakaway crates. 5m below the surface connections of any diameter can be made to the system. 9. It offers usage in both landscaping and civil engineering applications. Attenuation Rainwater, which has been collected from impermeable surfaces, is directed to the crate structure Rainsmart Ellipse Soakaway Crate. 07 ex VAT £7. A soakaway crate absorbs water and distributes it steadily back into the ground and soil. If the crates are used for attenuation, the water will drain away slowly into the drainage system. A high-strength option ideal for installation beneath heavily loaded areas such as roads, car parks and warehouse yards. CIRIA RP992 The SuDS Manual Update: Paper RP992/21 Guidance on the Maintenance Plan 3 Maintenance Inspection Checklists 3. A catchpit is an empty chamber that is installed into a drainage system to prevent silt and debris from building up and causing blockages. co. Buried 0. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. The concept of trees being used in a street or carpark setting. Geocellular crate for soakaway (infiltration) or storage (attenuation) applications for surface and storm water. 2018 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:-Permavoid. Its versatile design allows the system to be used in configurations and applications across all construction environments as a standalone solution. 95 (£48. Cover depth. Stacked on pallets to save space during transport reducing costs and CO 2 emissions. FREE shipping and FAST delivery. 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. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. 00. 1. Attenuation is the term used to describe the reduction of a force, effect or value. This crate system can be supplied with an appropriate geotextile layer to wrap the crates for infiltration systems and attenuation systems. 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. With a 20 tonne per square metre compressive strength it will withstand and support the load of general maintenance vehicles such as grass cutters. 50m 2 x (50/3000) = 0. 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. g 760L kit connectors also supplied. For both commercial and domestic properties. 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. VAT. Our easy-to-install mesh design provides a sturdy and reliable foundation. Tree Root Protection. It is not suitable for locations subject to high water tables. Rain Bloc 60 Tonne Soakaway and Attenuation Crate - 0. Soakaway Crate Attenuation Tank Underground Rainwater Collection Rainwater Harvesting Module Soakaway Crate $60. 00 £68. 4m in size. These leave virtually the whole space open to be filled with rainwater and are therefore much more effective. So, what are the differences between stormwater storage crates for filtration and attenuation? Let’s find out. 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. 354mm in length, 708mm in width, 150mm in height. Intense periods of heavy rainfall are placing new challenges on our country's drainage infrastructure - it's reckoned that two thirds of the devastating 2007 summer floods were the result of surface water flooding - urban deluges which flooded over 44,000. It can hold 0. The Polystorm range of products and solutions for attenuation and soakaway applications. Crafted from 100% recycled plastic and manufactured within the UK our Rainsmart Ellipse storm and water attenuation crates are buried under earth, gravel or other permeable materials which creates a void space for the purpose of holding rain-water whilst allowing surface water to drain away. The crates are a single piece and can be easily maneuvered, stacked and placed. 19m3 per crate. If you have already calculated your storage volume, you'll need that figure and the below: An idea of your tank dimensions. Ex VAT Inc VAT. (1) From £ 0. Attenuation Design. Experts recommend that the bedrock should not be within one metre of the drainage piping, in order to maintain proper filtration levels. Waste. Soakaways and attenuation crate systems have developed over the years. Crafted from 100% recycled plastic and manufactured within the UK our Rainsmart Ellipse storm and water attenuation crates are buried under earth, gravel or other permeable materials which creates a void space for the purpose of holding rain-water whilst allowing surface water to drain away. 00 7,500 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. We can design and fabricate Attenuation Crate Wrappings in a variety of materials and install on site, should the cell to be lined prove too large or too complex to supply as a prefabricated unit. Locate and compare Industrial Crating & Crates in Coquitlam BC, Yellow Pages Local Listings. 17. An offline attenuation system is where the inlet/outlet is connected to the same manhole/inspection chamber. This product is designed for below-ground stormwater attenuation, surface water infiltration and as a soakaway system. . An attenuation tank is used to capture surface water run-off that occurs during prolonged periods of rain, reducing the risk of localised flooding. Select the right Modular Cell. Top hat connector for twinwall inlet/outlet connections of attenuation/soakaway crate systems. proslab. Rain Bloc 60 Tonne Soakaway and Attenuation Crate - 0. This provides both unit to unit. 00 incl VAT. com : CORE Water | Soakaway Crates | Attenuation, Infiltration, Stormwater Retention Crate for Residential and Commercial Projects | Perfect for Flood Mitigation,. Located in the village of Torwood on the outskirts of Larbert, Torwood Glen is a high-end. Ideal for linking rainwater downpipes. While talking about the attenuation, this however manages the flow of water course or suitably drainage method, this all the way significant while tackling the flooded downstream infrastructure. One of the major benefits of using stackable crates is that the installation can be completed much faster and without the need to use specialist heavy equipment. Step 2 – Prepare the crates. This protection fleece non-woven geotextile is white in colour, 2 metres wide and available in a standard roll length of 50 metres. Get in touch 01753 652 555. Underground storage requires a lot of strategic planning to accommodate the many infrastructures that are already in place (piping/cables etc. Includes unperforated, perforated and half-perforated pipe in diameters from 110mm-600mm. It's. However, an attenuation tank will hold the water and allow it to be channelled to a different place. £69. The water stored in the attenuation tank is wrapped in membrane to stop soil particles from entering. Effective SuDS should always ensure systems are set up to handle adverse weather conditions and high volumes of water -. 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). 2. Attenuation Crates. This product can bear up to 20 tonnes and is 1m x 1m x 0. The void created by the crates can then. The effects of climate change are creating an unprecedented demand for Sustainable urban Drainage Systems (SuDS). DOMESTIC SEWAGE TREATMENT PLANTS. The Pelican Attenuation system is perhaps the UK's first complete attenuation tank system kit. Soakaway are designed and constructed in a very similar way to attenuation tanks and use the same polymer crate system to create the void. 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. 5% void ratio). comStormwater Attenuation Tank #M2015H. Maximum installation depth of. Maximum installation depth of 4m. Minimises risk of flooding and stores water (water to SUDS requirements) 400-litre capacity (2. The AquaCrate decreases the inconvenience of flooding during heavy rainfall, with rainwater “cleaned” by the geotextile surround. High void ratios can be achieved to provide a suitable. The void in the crate holds the stormwater during heavy ra. It is ideal for source control and surface water treatment applications, and can easily overcome problematic site conditions such as high. 11 ex VAT. 4m3 per crate) £57. STRONG Weighing just 16kg per crate, they can be moved and installed by hand removing the need for machinery LIGHTWEIGHTThe CORE Water Crate is the perfect product for creating soakaways in residential and commercial projects. 00 - $70. from £8. Soakaway crates can be used for rainwater attenuation or soakaway purposes in commercial and domestic projects. Rated 5. A solution to this is to make the area permeable, for instance by using permeable paving or asphalt, or installing soakaway systems. What are the typical problems with a soakaway tank? Want to know more? Download our free information pack to discover: GRAF Stormwater Management Systems. £54588. StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. Rain Bloc 60 Tonne Soakaway and Attenuation Set with Silt Trap & Lid - 0. 88 ex VAT. Surface water is diverted or soaks down into weight resistant crates and from there dissipate into the lower ground clearing. KLARGESTER AQUAHOLD SM05 - 5,000 litres. FREE Delivery. All the components are contained in a single crate, without any separate chambers. RAINBOX 3S is a geocellular crate that can be used for attenuation or soakaway purposes. They can be used in non-trafficked and trafficked areas, ideal for housing, car parks, driveways, commercial and. 5kg. 88 £ 545 . A) CRATE SYSTEM. Buy Polypipe Polystorm R (PSM1A) Soakaway Crate / Attenuation Cell Online at an Amazing Low Price From Easymerchant. Inc. Figure 1: An example of attenuation shoe box manufactured from Landflex AS material with a demo crates inside. Underground Rain Harvesting Module Tank For Rainwater Storm Water Collection System Soakaway Infiltration Attenuation Crates , Find Complete Details about Underground Rain Harvesting Module Tank For Rainwater Storm Water Collection System Soakaway Infiltration Attenuation Crates,Rainwater Module,Rain Harvesting Module,Rain. Attenuation Tanks. Documentation. We offer a full design service, please contact us at sales@plasticdrianage. BS Concrete Dished Channel CD RK3600000 255mm x 125mm - Pack of 16. An online attenuation system means the total volume of rainwater passes through the crate structure. Four StormCrates per 1m³; 95% void ratioATTENUATION CRATES. For soakaway purposes the crate is wrapped in a geotextile material which is permeable, but protects the system from debris, and allows the water to slowly release back into the ground through infiltration. They are modular, so multiple crates can be used for a soakaway system capable of providing the desired flow rate of water to a body of water or drain. Product Details. Soakaway crates, also known as infiltration crates, are a type of stormwater management system that allow water to naturally soak into the ground, reducing the load on drainage systems. Using an Attenuation Tank gives you the ability to store large quantities of water from a wide surface area and redistribute it over time. 5m x 0. This is where our soakaway crates come in. excl VAT (Each) Buy Now. The RAINBOX® Cube system is designed for use in non-trafficked and trafficked areas (with a Gross Vehicle Weight of 60 tons), and can be installed in soakaway (infiltration) or. The collected storm water then drains away slowly into the drainage system when the crate is used for attenuation, or, soaks away slowly into ground water table when the crate is used for infiltration. Use the look up table to select the number of crates required using the Nett volume per crate (0. Attenuation rate is a convenient way to quantify loss in general media, including transmission lines, using the decibel scale. Latest news & updates for RainBloc Crate for Attenuation and Infiltration tanks. Rain Bloc Stormwater Attenuation/Soakaway Crate. Q&A. Phone: UK Phone: 0207 1646706. Designed for trafficked and untrafficked areas. 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. Used in landscaped areas, or in trafficked areas up to a Gross Vehicle Weight (GVW) of 30 tonnes. The Brett Martin Stormcrate 55T Soakaway Crate is the perfect solution for managing stormwater runoff. noun. It is made from 100% recycled plastic. 42m3 StormBrixx crates (in four pieces) 8 x side panels for lateral support. A stormwater attenuation tank is designed to collect and store excess surface water run-off from a large storm event. AquaCrates are manufactured in the UK to ISO 9001 Quality Standards, from recycled strong copolymer polypropylene. Stormbloc ® Extra. Did you love our StormGuard attenuation crate? If so, there is no doubt you will love the HexiCell… The HexiCell is an innovative attenuation system, designed to manage storm water and. The ACO RoofBloxx Shallow Attenuation Tank stacks to create 85mm / 125mm / 165mm depths. Soakaway Crates are quick & simple to install and a variety of size. Let P0 P 0 be the power at z = 0 z = 0. Read honest and unbiased product reviews from our users. Reviews. Torwood Glen. A geotextile removes debris from stormwater while the addition of a geomembrane enables water storage when required. From £3,669. 2% Void Ratio. Soakaways are generally designed for small usage, like isolated residential properties and permeable ground conditions, like sand or gravel. Rain Bloc Stormwater Attenuation/Soakaway Crate. These soakaway crates (Polystorm) clip together to form a load-bearing underground water storage/attenuation system. Flooding can cause significant financial losses and damage. Our Polystorm Cell Modular Soakaway and Attenuation Crates PSM1A system provides surface water infiltration, retention or attenuation as a soakaway solution as a variety of depths in loaded and trafficked areas. Local. If you are looking to source crates for a geocellular attenuation tank then we offer a number of impermeable membranes that can help including a shoebox design which is used to wrap around geocellular attenuation units and is usually supplied in two fabricated pieces. 25 metres. Attenuation Tanks are preferred over alternative methods such as soakaway crates. You will be having one bespoke solution to get rid of water logging issues and manage the flood water. Rain Bloc 60 Tonne Soakaway and Attenuation Set with Silt Trap & Lid - 0. 200 to 299. These water attenuation/soakaway storage crates are lightweight and modular. Amazon. Contact Us today 01616671241. 03. 82’ (800 x 490 x 250mm) Material: 100% Recycled PP, or Virgin Materials Load Capacity: 40T/m2 Tanks: 10 tanks/cbm Void ratio: 94% Water Storage:. Figure 4: Dimensions of Attenuation Crate Used (Water Management Solutions: Modular Cell Systems, 2011) tanks have land usage implications and this is not ideal in an urban envi-ronment. Contact Us today 01616671241. Car parks & roads. Stormwater attenuation tanks provide a storage system for rainwater and surface water. Call Us. Flexible shape, perfect for use in restricted areas, narrow strips or shallow excavation systems. and there's plenty more on the way! 💧 Whether your soakaway or attenuation crate. 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. Soakaway crates can be used on a number of different projects to create effective storage & attenuation systems VERSATILE Our soakaway crates are able to withstand upwards of 20 tonnes dependent on the variation you choose. 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. Wavin's Q-Bic Plus attenuation unit offers a number of significant advantages when compared to standard stormwater units. Soakaway / Attenuation inspection and maintenance. A soakaway size of 1m3 is sufficient to drain a roof area of approximatley 50m2 under normal ground conditions. 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). Radmat Blue Roof systems are designed by our in-house team to achieve the required attenuation volume and/or the required discharge rate, with discharge rates. ) and attenuation crates that allow modular construction make it easier for the systems to adapt and work vertically or. Delivery. Great for pedestrian and vehicular areas beneath. StormMaster is an. COMMERCIAL. Quick view. Approvals: BBA. 300 to +. If creating a larger soakaway through butting and stacking, we recommend connecting using cable ties until the side fill is introduced. Features & Benefits. Compressive Strength: Maximum 61 Tonne. 00 What is Q-Bic Plus? The Q-Bic Plus system can be used either as a temporary storage attenuation tank or a soakaway crate, particularly where accessibility into the tank is required. 38 m³. Crate size 1200mm (L) x 600mm (W) x 420mm (D) (3. If purchasing in bulk give us a call so we can offer you the best price. 4m3 per crate. Domestic gardens. Figure 3: Continued below. 00 7,500 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8 kg. Stackable crates. Install IBRAN Gravel Grids for assured quality, consistency and confidence. The void in the crate holds the stormwater during heavy ra. 0m x 0. Find a Crate and Barrel Store Location Near You. Contact Us today 01616671241. Each soakaway crate is a different size, therefore the brand you choose can determine the number of crates required for your attenuation system. 8% void ratio, allowing rainwater run off to be temporarily stored and then released gradually, either into the soil acting as a. Toggle. 72 £57. StormBrixx attenuation and soakaway crates offer countless configurations, for flexibility in design and construction to fit any site. £1. It can hold 0. 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. View details. 3 Cubic Metre . What is the difference between a soakaway and an attenuation tank? A soakaway, as the name. 00 Graf Infiltration Tunnel Kit for Soakaways, Attenuation and Wastewaster. As a key part of our overall SuDS offering, our Klargester AquaHold attenuation range offers many benefits over traditional crate systems. AquaCell Core-R has been designed for use in deep applications, subject to regular and heavy traffic loadings, e. 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. Code G4110M3K; Brand Graf; £415. 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. 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. application of stormwater attenuation or infiltration. excl VAT (Each. Attenuation crates need to be designed to minimize. 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. As a key part of our overall SuDS offering, our Klargester AquaHold attenuation range offers many benefits over traditional crate systems. Designing attenuation storage for redeveloped sites The authors This factsheet has been prepared by Anthony McCloy of McCloy Consulting. Always seek approval It’s recommended that you should always seek approval from your local planning authority prior to commencing any works as often soakaways will need to be built with a. 9 Cubic Metre . Our industry leading products can be deployed in Infiltration / Soak-away, Permeable and Impermeable Attenuation systems, which makes their range of applications incredibly. uk. This one will surely meet your need thus relieving you from water logging issues. The water table should not reach the bottom of the pit at any time of the year. O. VAT. This product can bear up to 62 tonnes and is 1m x 0. It can be easily installed without heavy machinery one EcoBloc Inspect flex module weighs just 8. Drainage anti-flooding blocks or Graf Flood Attenuation Bloc with 300 litre capacity (95% void) for rapid drainage of land. Our soakaway crates (Aquacrate 400) clip together to form a load-bearing underground water storage/attenuation system. AquaCell Eco is manufactured from specially reformulated, recycled material and has been specifically designed for use in shallow, non-trafficked areas such as domestic gardens and similar landscaped sites. Buy premium-quality soakaway crates from Build Plumb Plastics. Features & Benefits. noun. This below ground Rain Bloc crate is a simple an effective way to form an attenuation tank. 54 Excl. from €1,914. 00 Graf Infiltration Tunnel Kit for Soakaways, Attenuation and Wastewaster. Excellent filtration and drainage properties for trench lining. Sort By. Search. 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. A stormwater attenuation system provides a cost-effective solution but not all companies have the. Crate Size: 1. Find helpful customer reviews and review ratings for COREwater SoakAway/Attenuation Crate (800x500x540mm) by COREwater at Amazon. Contact Us today 01616671241. €POA. £24. Durable and long-lasting. Tanks utilize 1m x1m x 0. Polystorm Crate. 83 inc VAT) KLARGESTER AQUAHOLD SM Range 14,000 - 29,000 litres. StormCrate55 modular cellular crates are used in storm water retention, attenuation and infiltration applications. ALL. APPLICATIONS • Landscaped areasAttenuation Tanks. 99 GBP. ACO RainDrain Channel and Galvanised Grating A 15 - 118mm x 97mm x 1000mm. ACO RoofBloxx is a complete roof attenuation system for blue, green and blue/green roofs. Includes 2 Shear Pin Connectors, and 4 StormCrate55 Connectors. ACO Hexdrain No 19310 Channel + Black Plastic Grating 1000mm A15. 11. Attenuation Tanks. VATFrom £ 0. As a simple concept, it works like this. 855 Litres. Attenuation tanks Green roofs (*) SuDS Manual Page References will be included once the SuDS Manual update has been completed. Offline System AttenuationHere’s a summary of the regulations for the installation of soakaway crates: Should be located at least 5 metres from the wall of any building. Description. 84m 3. View details. 4m 3 per pallet each crate has a storage capacity of 400 litres (95. Precast concrete tanks provide the ideal solution for. 00 10,000 litre SuDS Rainwater Attenuation Tank with integrated flow regulator. From £3,669. 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. 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. The full Rainbloc attenuation tank kit can be found here. To build the attenuation system, the blocks are connected together into a matrix. Vortex and nonsymmetric velocity profile caused by piping arrangement. Its superior design makes it suitable for building storage tanks under HGV trafficked and car park areas as well as non-trafficked areas (e. 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. 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. All penetrations are sealed to ensure one-hundred-percent waterproofing integrity, using stainless-steel bands or special components provided by the crate/block Manufacturer. 40 Save 20% . What are the different types of attenuation crates? There are several types of attenuation crates that can be used for different applications: Single piece crates. This is obviously wrong, because if you move a candle away from a surface in real life, then the surface gets darker. 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. Features & Benefits. Polypipe Civils Charnwood Business Park, Loughborough, Leicestershire LE11 1LE Tel: +44 (0) 1509 615100 Fax: +44 (0) 1509 610215 Email: civils@polypipe. Your property's total impermeable area is one of the details you would need to provide to work out how many crates you need. 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. SDS stormwater treatment and attenuation system – Eastern High School, Cardiff. In 1996 SDS GEOlight® helped create the foundations on which our company was built, when we completed. Attenuation Tanks.