Soakaway designs are crucial in Rock PL27 6 to ensure water is able to filter through the surfacing and head back into the environment. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Excavated Dimensions For Soakaway = 1. A soak pit or a soakaway is a closed porous chamber that is directly connected to a primary treatment unit of residential or commercial building. A t = Area of the drainage field in m 2. the trench. This allows rain water to gradually filter through the surfacing and go back in the ground. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Step 1. In this case, we are referring to a drainage field, also known as a land drain. A septic tank is an underground chamber. A single tank is used most often, but multiple tanks can be. g. (1982): Disposal of septic tank effluent. Soakaway Design in Uckfield. This allows rain water to gradually filter through the surfacing and go back in the ground. Soakaway Design in Rock. Size Of Soakaway and Septic Tank. Many peoples are asking details about the Septic Tank and Soakaway pits. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Septic tank Minimum slope 1:40 (2. Some advantages on why one must consider soak pit for discharging wastewater. You then time how long the water takes to. The relationship between the. The cost to install a septic drain field ranges from £3,000 – £. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. It is best to construct a single compartment for small capacity septic tanks. A t = p X V p X 0. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. A soakaway is a drainage system in Kilnhurst S64 5 which involves digging a hole in the ground and it filling with rubble. how to construct a soakaway pit - septic tank soakaway constructionvideo will show you. Definition of a septic tank. Soakaway designs are crucial in Oxford OX1 3 to ensure water is able to filter through the surfacing and head back into the environment. Septic tanks must be constructed to standard design. For a FREE quotation for any Septic Tank, Sewage Treatment Plant or Soakaway, replacement or installation. It is a vital step to take before installing soakaways or septic tanks and in its most basic form involves digging a hole or series of holes near where you want to position your drainage system and filling it with water. show it away from the house Building control are asking for a soakaway design that works, certified by the structural engineer. It consists of 2 main components, a watertight underground tank into which raw sewage is fed and a system designed to discharge the wastewater safely to the environment without pollution. Soakaway designs are crucial in Taunton TA1 3 to ensure water is able to filter through the surfacing and head back into the environment. 2. How much Reinforcements for soakaway Septic tank. No of persons per family = 6 nos. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Farms which can achieve very high levels of dry removal. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. A soakaway is a drainage system in Clacton-On-Sea CO15 3 which involves digging a hole in the ground and it filling with rubble. So the area of Septic tank = 10. Soakaway designs are crucial in Dyke PE10 0 to ensure water is able to filter through the surfacing and head back into the environment. septic tank, twin-pits for pour-flush toilets, biogas settler, anaerobic baffled reactor, etc. Soakaway designs are crucial in Hythe TW20 8 to ensure water is able to filter through the surfacing and head back into the environment. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 01. CAD blocks can be downloaded and used for your own personal or company design use only. Homeseptic; Free Quotes for the Installation of Septic Tanks, Sewage Treatment Plants & Soakaways. All septic tanks require emptying ONCE A YEAR. This allows rain water to gradually filter through the surfacing and go back in the ground. This allows rain water to gradually filter through the surfacing and go back in the ground. A partition wall raised at a distance of half-length of the tank and a 150mm x150mm hole is made at 450mm height in the wall to connect both chambers. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Soakaway designs are crucial in Hastings TN34 2 to ensure water is able to filter through the surfacing and head back into the environment. 16-3-101 et seq. A soakaway is a drainage system in Ireland ZE2 9 which involves digging a hole in the ground and it filling with rubble. co. Excavators value my designs because it makes their jobs easier. But the length of a reinforcement rod is 10,058mm and the span to be covered is 3048mm. There are all details about the Septic Tank, Plan, Cros Section, Foundation, levels, manhole covers etc, So We hope this Septic Tank details also will be useful for you. When considering the design and construction of a septic tank or a soak pit, several factors need to be taken into account, such as size and capacity, location, materials used, and installation process. nairaland. There are about 165,000 households in Ireland with a septic tank system and a well. This is to ensure that the land (soil) is suitable for a soak away, and to ensure that the soak. plain pipe from the septic tank to the soakaway, followed by 16 metres of specially perforated 110mm diameter piping and fittings. To calculate the size of the soakaway, use this formula: Area = P x V x 0. S Vent Pipe Covered Access Ope ni ng Covered Access Ope ing Sludge Sludge Catchpit Dung Channel Detachable Screen Covered Access Open ng All effluent from septic tanks or aerobic tanks shall be discharged to a subsurface treatment system. "Septic Setbacks - minimum separation distances, Park County CO. Many people get confused between a drainage field and a soakaway and often the terms are used interchangeable. Soak pits are not suitable if. In the wrong location, a septic tank soakaway system can still contaminate groundwater with its untreated effluent – a site survey conducted by a qualified professional is highly recommended in all cases. The soakaway should not be located within 10m of potable water supplies in order to avoid possible cross-contamination. A drainage field is a specifically designed arrangement of perforated pipework, laid in trenches to allow the effluent to filter into the ground. For a soakaway, liquid either from a septic tank or rainwater would enter the backfilled hole and drain away. This can be achieved by following the guidance below. Questions & Answers about clearances for septic tank, drainfield, soakaway bed, & wells. uk create new email Additonally you can find help on the Government website: opens in a new window Rules About Septic Tanks And Soakaways. Get in contact for a Free Quote or Inspection or just if you want some expert advice. Please get in contact on 0800 3101092 or via our contact form. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. For more free help and advice visit how to construct a soakaway pit – septic tank soakaway construction. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. that takes care to send effluent to the fields only at intervals rather than continuously as wastewater enters the septic tank a. There are about 165,000 households in Ireland with a septic tank system and a well. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. solids and organics, but the treatment. org #2 Power Lane, City of Belmopan. It must be installed at least 7 metres away from any habitable building. A soakaway is a drainage system in Scotland NG33 4 which involves digging a hole in the ground and it filling with rubble. Soakaway Design in Basingstoke. The height of the inlet pipe should be 1. It, therefore, perform better than the single compartment tank. Soakaway Design in Carburton. Soak Pit The Soak Pit which is also called the soakaway or soakage pit is a closed rectangular or circular, covered. Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum. 1. The volume of sewage settlement. Under-sizing your septic tank will result in the water produced being high in suspended solids and risks blocking your soakaway. 94. A soakaway is a drainage system in Tyrell's Wood KT22 8 which involves digging a hole in the ground and it filling with rubble. Oregon Septic Smart. Design of soakaway. 2 Types of On-site Wastewater Treatment System The general principles of design and operation of on-site systems are generally those in which excreta and anal cleansing materials are deposited directly into some. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. cat: Tanks. Soakaway Design in Norwich. But the length of a reinforcement rod is 10,058mm and the span to be covered is 3048mm. Soakaway Design in Miningsby. 05 cubic meters per year per individual. septic tanks. Septic Tank Soakaway Design Guide. Conclusion. If the septic tank isn’t emptied regularly enough. 50 1. The design and construction of grease traps should provide for conditions, which are suitable to allow the fat in suspension to rise and collect at the surface. The cost to install a septic drain field ranges from £3,000 – £. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Soakaway designs are crucial in Stanks LS15 8 to ensure water is able to filter through the surfacing and head back into the environment. 25 = 4 crates required. Soak pit construction can be done using locally available materials. Soakaway Design in Southwold. This is normally an infiltration field through which. There are different types of septic tank soakaway, and in some cases, this element to your septic system can be the cause of. Soak Pit Construction and Design Manual. You are required to design a loop system of pipes in the ground with the total area of the trenches equalling the area you have from your calculations eg 22. 3. Septic Tanks and Soakaway Page 11 ANNEXURE 1 – SABS 0400-1990 Tables 1, 2 and 3 ANNEXURE 2 – Diagram of a Concrete Septic Tank. Soakaway designs are crucial in Swansea SA4 9 to ensure water is able to filter through the surfacing and head back into the environment. The soakaway makes the tank require less emptying because it allows for some of the wastewater to filter into the ground. This allows for a settlement zone, 800mm deep and with a volume of water which allows the incoming effluent to. The septic tank can be emptied every 5 to 7 years, depending on the amount of wastewater it processes. Septic Tank Regulations in Wrexham -. It allows the effluent to percolate into the surrounding soil, where it is treated naturally through biological processes. Soakaway Design in Warrington. If the base is constructed on a gradient the water will naturally collect at the low points. Soakaway Design in Barnsley. Septic Tank Maintenance in Lancashire. KoroSan Guideline #3 Septic tank construction using concrete blocks 5 above daily volumes may be significantly higher. Septic Tank Maintenance. The trenches for the soakaway should be between 300mm and 900mm wide with a distance of 2m between trenches. However, there is need to inform the people and the utilities on appropriate disposal of the waste and maintenance of the facilities. It can be sent to a septic tank and soakaway where bacteria work on it and reduce the volume. How does a Septic Tank System (STS) work? 4. This allows rain water to gradually filter through the surfacing and go back in the ground. Soakaway designs are crucial in Stafford ST16 3 to ensure water is able to filter through the surfacing and head back into the environment. Septic Tank Regulations in Rock -. (e. Avoid flushing any non-biodegradable objects down the toilet, as this can clog the tank and drain field. 2. This paper presents a review on the septic tank and septic systems. The premium BioDisc® sewage treatment system is available in four sizes for all types of domestic applications. Soakaway designs are crucial in Warrington WA2 7 to ensure water is able to filter through the surfacing and head back into the environment. As septic tank is a basic sedimentation tank, it is in a rectangular or cylindrical shape with minimum of two chambers. The well-established brand name, RotoTank™, has outlasted its no-nonsense 10-year warranty over and over. A Sewage Treatment Plant can discharge directly to a drainage ditch, watercourse or river. DESIGN AND CONSTRUCTION STANDARDS FOR SEPTIC TANKS, SOIL ABSORPTION SYSTEMS, AND OTHER SMALL WASTEWATER SYSTEMS Section 1. The reason behind this is also clear. On average, septic tanks are 4. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Fill with water to depth of 300mm. 25. A soak pit, also known as a soakaway or septic tank soakaway, is an underground structure designed to receive and disperse wastewater from septic tanks or other sources. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. A soakaway is a drainage system in Trench TF2 7 which involves digging a hole in the ground and it filling with rubble. com. The Importance of Maintenance 6 08. This allows rain water to gradually filter through the surfacing and go back in the ground. Design and Construction of your Soakaway: Soakaways should be always constructed with perforated pipe, and laid in trenches with the same gradient not steeper than 1:200. Modern Septic Tanks. 8 = 5. They have supplied multiple potable and sewage systems, to our client between 2017 and 2022. Septic tank cost: $1,500-20,000 (CAD 1,900- CAD 25,800) Labor cost: $1,500-$4,000 (CAD 1,900-CAD 5,100) Drain field replacement: $1,000-$5,000 (CAD 1,300-CAD 6,500) The wastewater your household creates is full of dangerous bacteria. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. A soakaway is a drainage system in Ireland SG17 5 which involves digging a hole in the ground and it filling with rubble. Description. The design and construction of septic system drainage fields must be carried out by qualified and competent contractors. A soakaway is a drainage system in Cornwall PL14 6 which involves digging a hole in the ground and it filling with rubble. The minimum size of any distribution pipeline shall be 100mm. p = Number of persons served by the tank. Percolation test procedure for surface water soakaways. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. This reduces the quantity of solids and also changes its composition to sludge, which builds up in the bottom of the tank. 481 gallons, which we round up to 7. Cesspit Septic Tank - How it works - Design. 70 3. The process is as follow: Bore a hole 150mm dia to 1m below ground level. the HOMESERVE Design® and HOMESERVE. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Design the Septic System: Engage a professional septic system designer or engineer to create a suitable system design based on the percolation test results and local regulations. The ST is designed to have about 600mmm (2ft) of solids in the bottom. This is a CAD dwg typical reinforced concrete septic tank reinforcement detail. Septic tank prices are $1,000 to $1,500 for an average 1,000-gallon tank. Therefore, we would need 10,058/3058 = 3. The phrase soakaway is often, wrongly, used in relation to septic tank and sewage treatment plant discharges to ground: A soakaway is used for surface water (rainwater from roofs, paved areas etc) A soakaway is typically a hole or structure filled with rubble / drainage crates) Septic tanks can ONLY discharge to ground via a drainage field. 2000gal 1 compartment septic tank. Soakaway designs are crucial in Northampton NN2 6 to ensure water is able to filter through the surfacing and head back into the environment. Septic Tank Regulations in Beer -. This system uses two 55 US gal (210 L) drums, as opposed to the 1,000–2,000 US gal (3,800–7,600 L) tanks used for a standard home septic system. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. This allows rain water to gradually filter through the surfacing and go back in the ground. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The septic tank was invented in the 1860's and is the original piece of sewage equipment used for the treatment of sewage in. If your kitchen sink is fitted with an automatic waste grinder these volumes should be increased by 30%. Sanitary and rain drainage. (N. In the past when a septic tank soakaway was construc. For more details on the design and construction please see this article. So if we take our Brett Martin Stormcrate crates as an example, each crate holds 0. Wisconsin Leech. Soakaway designs are crucial in Colchester CO1 1 to ensure water is able to filter through the surfacing and head back into the environment. Specific design criteria must be applied to the settlement tank and soakaway system. Our tanks are built to last. how to construct a soakaway pit - septic tank soakaway constructionvideo will show you just how easy it. Soakaway Design in Chesterfield. Alternatively, fill out the contact form and we will be back to you as soon as possible. size 50mm from septic depth to be fixed on site tank outlet 200mm thick blockwork wall f. 5%) Soakaway Drop pipe (or drainage field) (100 - 150mm dia. Septic Tank Design Configuration The depth of a septic tank, from the bottom of the outlet . This allows rain water to gradually filter through the surfacing and go back in the ground. Poorly treated waste water from faulty septic tank systems can contaminate nearby household wells with harmful bacteria and viruses. Materials such as the crate, membrane, pipe, gully,. Where practical the soakaway should be. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Replace you old sewage system and install a new one the cost of £8,000 – £12,000. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Remember, septic tanks are designed to encourage the separation and decomposition of solid waste. So those fine particles start to block the soakaway and the ground below and around the soakaway pipes from day one! Q: Do soakaways need maintenance? A: It is very hard to maintain a. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. This allows rain water to gradually filter through the surfacing and go back in the ground. A t = p X V p X 0. A ground assessment and soil percolation test should be carried out to determine. 27 Part H2 of the Building Regulations 2000: Drainage and waste disposal (go to page 32) states that. 4268/175 = 24 lengths of rod. This is the ultimate guide to soakaway design. Soakaway designs are crucial in Norwich NR1 1 to ensure water is able to filter through the surfacing and head back into the environment. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 16-3-101 et seq. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. A soakaway is a drainage system in Ball Hill RG20 0 which involves digging a hole in the ground and it filling with rubble. Installation, Replacement or Repairs to Septic Tanks If the septic tank and soakaway was installed more than 15 years ago, then you do not need permission to replace or modify your septic tank or soakaway. The. A complete septic system—including a leach field (also called a drain field), tank, and piping—costs $10,000 to $25,000. You can read more about the legislation change and what it means in our Guide. See more ideas about septic tank design, septic tank, sewage system. The septic tank section is responsible for treating the wastewater naturally by separating the solid waste from the liquids. Mech - elect - plumb. Pre-settled effluent from the septic tank is discharged to the underground chamber from where it infiltrates into the surrounding soil. This video will show you just how easy it is to construct a soakaway pit. Library. To make you septic tank legal you have 3 options. What is a Soakaway? A soakaway is a drainage system in Chalk DA12 2 which involves digging a hole in the ground and it filling with rubble. Soakaway Design in Northampton. Strict design rules are in place and septic tanks must be designed in accordance with BS 6297 1983. You should not direct rain water into a cess pit or septic tank either ( see our project on Foul and Surface Water Drainage Systems for more information ). Soakaway designs are crucial in Clearwell GL16 8 to ensure water is able to filter through the surfacing and head back into the environment. Please note: The term ‘soakaway’ is. More than this and the tank is full! Once it’s full of solids it should be emptied immediately. Fill the 300mm square hole to at least the 300mm mark and allow to soakaway over night. Thanks for the replies. Soak Pit Construction and Design Manual. A soakaway is a drainage system in Plymouth PL3 4 which involves digging a hole in the ground and it filling with rubble. Soakaway designs are crucial in Iron Acton BS37 9 to ensure water is able to filter through the surfacing and head back into the environment. The discharge to the watercourse stopped and diverted to a drainfield, designed and constructed to the current British Standard 6297:2007. 6 Design of other drainage structures such as linear drains is discussed in NRA HD 33 Drainage Systems for National Roads. (or soakaway) Communal latrine block Vent pipe 15 Figure 10. 5. My septic tank is 15' feet from house following leach is 280' feet away from Septic tank and farthest end of leach field is almost 7' foot drop in elevation. An alternative septic system costs $4,000 to $15,000 installed. Soak Pit – Need and Functions. Easy Drain is a gravel free alternative to the old traditional way of constructing septic tank soakaways. The depth or height of Septic tank is in between 1. A septic tank is a system that collects and treats wastewater from a property. Soakaway Design in Scotland. Step- One. 2 can be used. Routine maintenance of pipe network essential. 90 m and 4. Over 60% of all sites in the UK FAIL the three. 8m deep) Excavated Dimensions For Septic Tank = 3m x 3m x 3. In the sketch shown here, effluent is discharged to the septic mound by a pumping chamber. Soakaway designs are crucial in Scotland LS18 5 to ensure water is able to filter through the surfacing and head back into the environment. More than this and the tank is full! Once it’s full of solids it should be emptied immediately. Soakaway Design in Nottingham. However, this is not mentioned in the 2010 Building regulations guide. of users All wastes TABLE 2 SOAKAGE PIT SIZES TYPE B 5 85 75 All wastes No. Soakaway designs are crucial in Church BB5 4 to ensure water is able to filter through the surfacing and head back into the environment. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. [2] Settling and anaerobic processes reduce. a soil percolation time (rate) of 60 minutes for water to fall 150mm (N. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. A septic tank may be more suitable for properties with high water usage, while a soakaway may be more suitable for properties with low water usage. The design and construction of grease traps should provide for conditions, which are suitable to allow the fat in suspension to rise and collect at the surface. Septic Tank Regulations in Law -. When wastewater passes through the septic tanks, heavier solids sink to the bottom and undergo bacterial digestion. Repeat test three times. Septic Tank Size Calculation based Per User Consumption. Step- One. Cesspit Septic Tank - How it works - Design. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. It should be directed into the rainwater or storm drain system of the mains drains or into a soakaway, but never into a foul water system. A drainage field is constructed with slotted 110mm drainage pipe (not flexible land drainage pipe). Soakaway Design in Winchester. Soakaway designs are crucial in Watnall NG16 1 to ensure water is able to filter through the surfacing and head back into the environment. 1. p = Number of persons served by the tank. Soakaway Design in Clearwell. The system allows contaminants and impurities. Care should, therefore, be taken to fix any leakages to avoid excess burden on septic tanks and subsequent land treatment systems. Septic tanks must be emptied once every few years so that there is enough space for microorganisms to attack sewage and for mud to settle. They comprise an underground tank for anaerobic treatment followed by a soakaway tank or pipe system to encourage effluent flows to percolate into the. Soakaway Design in Chadwick. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Information on design and functional aspects, and environmental effects of septic tank systems are presented. The reason for the change is because it is no longer considered that the waste water is clean enough to pass. Soakaway Design. Design Considerations. . Any plant, or conversion system, which does not have the EN12566-3 Certificate is not allowed to be sold. Step 7 - Connect the pipes. You are required to design a loop system of pipes in the ground with the total area of the trenches equalling the area you have from your calculations eg 22. Detailed design guidance is given in BRE Digest 365 or CIRIA Report C753. The sludge generation rate in septic tanks is around 0. Authority. Design consideration of Soak Pit. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. com Excavate a hole 300mm square to a depth 300mm below the proposed invert level of the soakaway pipes. Design Considerations: (a) Openings should be sufficiently small to retain the solids but large enough to allow the wastewater to pass through. Jan 27, 2021 - Explore Iheks's board "SOAKAWAY" on Pinterest. 50 DIAMETER OF SOAKAWAY (METERS) 3. Then all you need to do is simple decide on the type of soakaway crate you require, and divide 1m3 by the volume of each individual crate. Soakaway Design in Midlothian. 6 Septic Tanks, Holding Tanks and Soakaways Septic tanks and soakaways are used to store and treat foul flows from premises, prior to future connection to the main sewerage system. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The calculation gives the AREA in SQUARE. Homeseptic, Septic Tank servicing, inspection, problem-solving and installation. Home. Soakaway Design in Boston West. efficiency is only moderate (referred to as. No of persons per family = 6 nos. It should be directed into the rainwater or storm drain system of the mains drains or into a soakaway, but never into a foul water system. A septic tank soakaway drainage field system performs two functions:-. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 3. 10 Septic tank outputs; 5. 70, pp. The soakaway is also known as a drainfield or leech field. The trench area requirement may be reduced if the percolation rate is increased, pro rata to the requirements shown in Table 2; on the other hand, the trench area would need to be increased if the percolation rate is slower. Ensure access for emptying of septic tank, as well as availability of sludge treatment and disposal. This allows rain water to gradually filter through the surfacing and go back in the ground. septic tank soakaway design. They are designed to remove impurities and contaminants that come from the treated effluent of a septic tank. This ensures that there is uniform ponding and infiltration across the base of the soakaway. 3. The provisions of the following Regulations concerning Septic Tanks, Soakaway Pits and Holding Tanks shall come into effect. 11 Surface water soakaways; 5. If it is, then it means that the groundwater underneath your soakaway is abstracted via a borehole somewhere and used for drinking water You will not be allowed to pollute it with sewage effluent bacteria and viruses from a septic tank or. Septic Tanks and Soakaway Page 11 ANNEXURE 1 – SABS 0400-1990 Tables 1, 2 and 3 ANNEXURE 2 – Diagram of a Concrete Septic Tank. Soakaway designs are crucial in Scotland DE73 8 to ensure water is able to filter through the surfacing and head back into the environment. It is used for the dispersal of wastewater after a septic tank or treatment plant. Soakaway designs are crucial in Uckfield TN22 1 to ensure water is able to filter through the surfacing and head back into the environment. A septic tank soakaway is used to safely drain off treated wastewater, thus allowing the effluent level in your tank to remain constant, leaving remaining organic solids to degrade with the help of bacterial breakdown. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The septic tank wall thickness should be a minimum of 230mm and the. 5 to 3 yrs. The reasons for septic tank and soakaway drainage field failure 1. 70, pp. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. . This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole.