septic tank soakaway design. 5 and 4m deep, but never less. septic tank soakaway design

 
5 and 4m deep, but never lessseptic tank soakaway design  The size of the septic tank needed is based on the number of bedrooms the house has

Form the Floor Lining. A soakaway is a drainage system in Lowestoft NR33 0 which involves digging a hole in the ground and it filling with rubble. Authority. A septic tank is a system that collects and treats wastewater from a property. 2 cuts from each length of rod. 94. INLET AND OUTLET TEES. Soakaway designs are crucial in Herefordshire HR2 0 to ensure water is able to filter through the surfacing and head back into the environment. They are called septic tank soakaway crates. Septic tanks come in many shapes and sizes. not good. Septic tanks will be regarded as temporary treatment systems. A soakaway is a drainage system in Ireland ZE2 9 which involves digging a hole in the ground and it filling with rubble. 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. size 50mm from septic depth to be fixed on site tank outlet 200mm thick blockwork wall f. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. A inspection chamber must be installed between the septic tank and the soakaway. Poorly treated waste water from faulty septic tank systems can contaminate nearby household wells with harmful bacteria and viruses. Soakaway Design in Cambridge. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Soakaway designs are crucial in Salisbury SP1 3 to ensure water is able to filter through the surfacing and head back into the environment. The minimum capacity of the pit should accommodate all the wastewater produced during one washing or in one day, whichever figure is the greater. Soakaway designs are crucial in Oxford OX1 3 to ensure water is able to filter through the surfacing and head back into the environment. Intro Septic Tank Soakaway Design Guide Septic Tank TV 16. This is normally an infiltration field through which. A leaching field treats septic effluent by controlling the flow of effluent, by. Design of soakaway. 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 Bridgnorth WV16 4 which involves digging a hole in the ground and it filling with rubble. For imformation on septic tank soakaway regulations click this link: Septic Tanks UK | Septic Tanks | Septic Tank Regulations Call 01753 360102 or email me [email protected] Design in Clayworth. Are you wondering about the legal status of septic tank soakaway crates?Septic Tank & Soak-away; Registered Architects(APAB) Registered Engineers(APEB) Forms; News; Contact Us; Search for: Search Button. minimum dimension of the septic tank. Inlet and outlet pipes shall be installed with four-inch sanitary tees constructed of schedule 40 PVC or its equivalent. 5 to 3 yrs. Soakaway designs are crucial in Warrington WA2 7 to ensure water is able to filter through the surfacing and head back into the environment. S. Generally these pipe. A Septic Tank, commonly called a Cesspit, is simply a big concrete, brick, fibreglass or polyethylene tank, buried in the ground that. Advantages. Each Brett Martin crate measures 1200mm long, 600mm wide and. The height of the inlet pipe should be 1. For ease, we have created a simple table. 10 Septic tank outputs; 5. The relationship between the. for clay soils and high water tables where a normal underground soakaway is not permitted. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. To calculate the size of the soakaway, use this formula: Area = P x V x 0. Soakaway Design in Uckfield. A septic tank is an underground tank where the solids sink to the bottom, forming a sludge, and the waste water flows out to a drainage field. A soakaway is a drainage system in Staylittle SY24 5 which involves digging a hole in the ground and it filling with rubble. traditional septic tank soakaway systems on water quality in Ireland. Tanks shall be watertight and fabricated to. For an easy-to-access garden, you can expect a small soakaway to cost around £1,000. Bio Safe One. 3. 8 AM - 12:00 & 1:00 - 5 PM Monday to Thursday 8 AM - 12:00 & 1:00- 3 PM Friday. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The size and capacity of a septic tank or a soak pit depend on the number of users, daily water usage, and soil conditions. size 150mm min. Soakaway designs are crucial in Dyke PE10 0 to ensure water is able to filter through the surfacing and head back into the environment. 3. Septic tank design // soak pit design. 3 Siting of Septic Tanks and Soakaways Septic tanks should be sited min 7m from any habitable parts of buildings. 1:2008. When installing the tank, the lid is filled with concrete prior to use to ensure it stays closed off. 5 litres to fill a volume of this size. We are happy to help, call us on 0800 3101092 or via our contact form. Because they are outside, leaves, twigs, grit and litter can accumulate and block the pipes, or prevent the water from draining efficiently. Under-sizing your septic tank will result in the water produced being high in suspended solids and risks blocking your soakaway. 5 to 3 yrs. A soakaway is a drainage system in Rhodesia S80 3 which involves digging a hole in the ground and it filling with rubble. that takes care to send effluent to the fields only at intervals rather than continuously as wastewater enters the septic tank a. More than this and the tank is full! Once it’s full of solids it should be emptied immediately. The wall separating the two is about two-thirds the length away from the inlet. But the length of a reinforcement rod is 10,058mm and the span to be covered is 3048mm. 4268/175 = 24 lengths of rod. The design should include components such as the septic tank, distribution box, and drain field layout. 78m 2. These two types of tank do not operate in isolation, and they need an outlet for the separated wastewater to pass into in order for the wastewater to pass safely into the surrounding ground. "primary treatment"). 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 Culmstock EX15 3 which involves digging a hole in the ground and it filling with rubble. Questions & Answers about clearances for septic tank, drainfield, soakaway bed, & wells. If your kitchen sink is fitted with an automatic waste grinder these volumes should be increased by 30%. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The wall separating the two is about two-thirds the length away from the inlet. Soakaway Design in Beer. The calculation gives the AREA in SQUARE. #septictank #septictanksoakaway #soakawaypitSoakaway Design in Puddle. The septic tank was invented in the 1860's and is the original piece of sewage equipment used for the treatment of sewage in. Sanitary and rain drainage. Excavators value my designs because it makes their jobs easier. Installation of the soak pit requires a small area. SEPTIC & SOAKAWAY PIT President's Office, Regional Administration and Local Governments. Septic Tank Design Configuration The depth of a septic tank, from the bottom of the outlet . This totally depends on the size of the soakaway pit and the bar spacing. 25m3 of water, so 1m3 divided by 0. V₁ = N * Q * T. Soakaway Design in Guide. The ST is designed to have about 600mmm (2ft) of solids in the bottom. If discharging to ground the written rules demand you. 01. 35. 14 Protection of pipework;. 2. Repeat test three times. The septic tank can be emptied every 5 to 7 years, depending on the amount of wastewater it processes. This allows rain water to gradually filter through the surfacing and go back in the ground. ) Large quantity of water required Aqua privy Accumulated sludge Drainage field. Soakaway designs are crucial in Hastings TN34 2 to ensure water is able to filter through the surfacing and head back into the environment. On average, you’ll pay about £3,700 for the supply and installation of a 2,800 litre septic tank. Soakaway designs are crucial in Bagshot GU19 5 to ensure water is able to filter through the surfacing and head back into the environment. This allows for a settlement zone, 800mm deep and with a volume of water which allows the incoming effluent to. Many peoples are asking details about the Septic Tank and Soakaway pits. The number of bedrooms and number of people in your home will determine the dimensions of the septic tank you need. 4. Raw sewage has 300 parts per million (ppm). A soakaway is especially useful in built-up areas that have been built from impermeable materials, as it allows water that would usually pool and flood to naturally ‘soak away’. 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. plain pipe from the septic tank to the soakaway, followed by 16 metres of specially perforated 110mm diameter piping and fittings. Conclusion. Soakaway Design in Dalmellington. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 20 for sewage treatment units and. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. This reduces the quantity of solids and also changes its composition to sludge, which builds up in the bottom of the tank. the septic tank must. 25. Ensure their Drainage Field has been correctly designed and installed to meet This should govern the planning of your system and will inform whether a septic tank will be suitable for your property. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. (1982): Disposal of septic tank effluent. The cost to install a septic drain field ranges from £3,000 – £. 05 cubic meters per year per individual. The two main reasons a soakaway is no longer acceptable for foul drainage are as follows: A Soakaway does not necessarily allow for the treatment of effluent. However, there is need to inform the people and the utilities on appropriate disposal of the waste and maintenance of the facilities. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The first chamber should be at least half of the total length – in case of more than two chambers and a length of 2/3 of the total length should be considered, when there is only two chambers exist. Septic soakaway bed / drainfield shape & layout guidelines: This septic system design article discusses determination of a conventional drainfield shape or layout. efficiency is only moderate (referred to as. 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. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Septic Tank Soakaway Design Guide. Soakaway designs are crucial in Taunton TA1 3 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. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Soakaway Design in Berkshire Soakaway designs are crucial in Berkshire RG7 4 to ensure water is able to filter through the surfacing and head back into the environment. In this case, we are referring to a drainage field, also known as a land drain. Septic Tanks . A soakaway is a drainage system in Bexhill TN39 4 which involves digging a hole in the ground and it filling with rubble. Septic Tank Regulations in Dyke -. The wastewater flows through an opening at the top of a wall separating the two compartments into the. Easy Drain is a gravel free alternative to the old traditional way of constructing septic tank soakaways. Soakaway designs are crucial in Clayworth DN22 9 to ensure water is able to filter through the surfacing and head back into the environment. Soakaway designs are crucial in Boston West PE20 3 to ensure water is able to filter through the surfacing and head back into the environment. The septic tank wall thickness should be a minimum of 230mm and the. The provisions of the following Regulations concerning Septic Tanks, Soakaway Pits and Holding Tanks shall come into effect. traditional septic tank soakaway systems on water quality in Ireland. Therefore, we would need 10,058/3058 = 3. They comprise an underground tank for anaerobic treatment followed by a soakaway tank or pipe system to encourage effluent flows to percolate into the. Considering Length and width ratio = 4:1. Soakaway Design in Causeway. Step 2. The first sign that a soakaway is blocked, is water pooling on the surface, and gradually building up. Figure 1 below is a schematic diagram showing the general arrangement of the components of a soakaway system. A soakaway is a drainage system in Lawn SN3 1 which involves digging a hole in the ground and it filling with rubble. The soakaway can run the under the soil the length of the yard in a “herring-bone” shape to maximize the distribution of the wastewater. There are about 165,000 households in Ireland with a septic tank system and a well. org #2 Power Lane, City of Belmopan. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. As part of a septic tank system, the soakaway treats the effluent. Sewage generation = 85 % of water supply. Please note: The term ‘soakaway’ is. Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum. They are designed to remove impurities and contaminants that come from the treated effluent of a septic tank. (i) satisfy the regulations set out in Part P of the National Building Regulations and Building Standards Act; and. A soakaway is a drainage system in Norfolk NR13 3 which involves digging a hole in the ground and it filling with rubble. Routine maintenance of pipe network essential. You're not allowed to use. Having a fully functioning septic tank is essential to help dispose of it safely — and to keep it from backing. This allows rain water to gradually filter through the surfacing and go back in the ground. Avoid flushing any non-biodegradable objects down the toilet, as this can clog the tank and drain field. Let us estimate the Tank size for a Home – 5 Members. It serves the function of slowly letting wastewater soak into the ground. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. The wastewater flows through an opening at the top of a wall separating the two compartments into the. A percolation test determines how quickly your soil absorbs and disperses water. 822-2615 [email protected] soakaway is a drainage system in Gwynedd SY20 9 which involves digging a hole in the ground and it filling with rubble. 4/1. There are specific regulations relating. Soakaway Design in Scotland. Water supply = 200 lits/day. Regulatory Responsibility 7. A single tank is used most often, but multiple tanks can be. Soakaway Design in Chadbury. The inlet pipe into the first. These codes of practices had a few revisions until they were replaced by the one standard in 1983 – BS 6297. For more details on the design and construction please see this article. This allows rain water to gradually filter through the surfacing and go back in the ground. S. Soakaway designs are crucial in Rock PL27 6 to ensure water is able to filter through the surfacing and head back into the environment. If discharging to ground the written rules demand you. Remember, septic tanks are designed to encourage the separation and decomposition of solid waste. 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. This allows rain water to gradually. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Septic Tank Regulations in Shere -. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Soakaway Design in Lower Swell. 25 m while. Soakaway Design in Boston West. Our team are always on hand for advice and assistance on the cost of a septic tank system. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 1. For ease, we have created a simple table. Design Considerations. . Soak Pit The Soak Pit which is also called the soakaway or soakage pit is a closed rectangular or circular, covered. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Permission from the EA will only be needed if this discharge exceeds 5m squared. Septic Tank Construction Septic tanks are typically pre-cast concrete, and shall have two compartments with top seam construction. Often referred to as septic drain fields or soakaways, these fields are an essential component of a septic tank system. com Excavate a hole 300mm square to a depth 300mm below the proposed invert level of the soakaway pipes. How much Reinforcements for soakaway Septic tank. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The owner must provide a 150 mm by-pass pipe from the last manhole before the septic tank and extended to the outside drain line of theThe tank is much smaller than required by building codes, and the design is missing some important items such as internal baffles and a qualified site assessment. Q is the rate of water supply. 8m long, 1. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. This is an illustration on how to construct a low volume septic tank plus soak pit. Soakaway Design in Spalding. through which domestic wastewater. how to construct a soakaway pit - septic tank soakaway constructionvideo will show you just how easy it. Soakaway designs are crucial in Barnsley S70 2 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. Clearances or isolation distances for septic tank, drainfield, soakaway bed, & wells: Septic tank or field setbacks & clearances for septic systems to wells, buildings, property lines, & distances to other site features. We offer a free quote for all Installations and replacements as well as a comprehensive inspection and survey service. ® All our robust BioDisc® models cater for properties housing between 4-18 people. 15 There shall be no physical connection between a public or private potable water supply system and a sewer. g. S. Soakaway designs are crucial in Watnall NG16 1 to ensure water is able to filter through the surfacing and head back into the environment. Soakaway designs are crucial in Carburton S80 3 to ensure water is able to filter through the surfacing and head back into the environment. Soakaway designs are crucial in Scotland LS18 5 to ensure water is able to filter through the surfacing and head back into the environment. 634–641. Where N is the number of the user. TREATMENT PLANTS AND SEPTIC TANKS DF-V0. Soak Pit – Need and Functions. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The volume of sewage settlement. 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. Soakaway designs are crucial in Cirencester GL7 1 to ensure water is able to filter through the surfacing and head back into the environment. 1. Clearances or isolation distances for septic tank, drainfield, soakaway bed, & wells: Septic tank or field setbacks & clearances for septic systems to wells, buildings, property lines, & distances to other site features. How a septic tank system works. This allows rain water to gradually filter through the surfacing and go back in the ground. Septic tank drainage fields are an integral part of a septic system. This allows rain water to gradually filter through the surfacing and go back in the ground. A septic tank is a large underground tank that has an inlet pipe and an outlet pipe connect to it. Soakaway Design in Warrington. Installing an efficient French drain/soak away system is imperative as it can prevent septic tank. A soakaway is a drainage system in Aberdeenshire AB54 7 which involves digging a hole in the ground and it filling with rubble. 2000gal 1 compartment septic tank. The garden design cost for an impactful project on a nice large garden of 100M 2 will generally range between £5,000 and £10,000. See our 100 reviews on. 70 1. 90 m and 4. A soakaway is a drainage system in Scotland RG7 6 which involves digging a hole in the ground and it filling with rubble. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 1. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. To make you septic tank legal you have 3 options. This allows rain water to gradually filter through the surfacing and go back in the ground. The. Cesspit Septic Tank - How it works - Design. 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. Septic tank Minimum slope 1:40 (2. This allows rain water to gradually filter through the surfacing and go back in the ground. Strict design rules are in place and septic tanks must be designed in accordance with BS 6297 1983. In the past when a septic tank soakaway was construc. 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. Soakaway designs are crucial in Miningsby PE22 7 to ensure water is able to filter through the surfacing and head back into the environment. Sokoine Building, P. 2 can be used. This allows for a settlement zone, 800mm deep and with a volume of water which allows the incoming effluent to. 80 9. 3. 30 – Septic tank and aqua privy design 3 0 S e p t i c t a n k a n d a q u a p r i v y d e s i g n The Water, Engineering and Development Centre is one of the. Materials such as grease and oil float to the surface in the tanks to form. A layer of sand and fine gravel is spread across the bottom to help disperse the flow. The well-established brand name, RotoTank™, has outlasted its no-nonsense 10-year warranty over and over. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Tanks that must be installed partially in the groundwater or subject toA soakaway design that ensures you have a SUDS (Sustainable Urban Drainage System) compliant system in place that can remove water efficiently and in an environmentally friendly way. Septic Tank Size Calculation based Per User Consumption. Larger capacities are the best fit for a two-compartment tank. Soakaway designs are crucial in Tandridge RH8 9 to ensure water is able to filter through the surfacing and head back into the environment. dwg. O. The construction of a drainage field is very different to the construction. Get in contact for a Free Quote or Inspection or just if you want some expert advice. 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. Important Update:The sludge generation rate in septic tanks is around 0. It, therefore, perform better than the single compartment tank. solids and organics, but the treatment. Length of Septic tank = (4/5) x. Soakaway Design in Herefordshire. When installing the tank, the lid is filled with concrete prior to use to ensure it stays closed off. This totally depends on the size of the soakaway pit and the bar spacing. sloping towards the ditch or soakaway. Soakaway designs are crucial in Wrexham LL14 4 to ensure water is able to filter through the surfacing and head back into the environment. Options for flow through tank partitions 300mm Partition wall with slots Top of partition 150mm W. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The Oregon Septic Smart Initiative has two main goals: Provide Oregonians with easy access to important. The water released from a sewage treatment plant , however, has been through at least two stages of treatment and is clean and safe to be released directly. 13 Excavation; 5. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The EN12566-3 is also required for CE marking, and CE marking is mandatory in the UK. The few related topics that came up on google all suggested that it was a danger to eat such crops grown near to soak aways. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Step 7 - Connect the pipes. Soakaway designs are crucial in Spalding PE11 2 to ensure water is able to filter through the surfacing and head back into the environment. How to construct a septic tank soakaway. The basic functions and the need for a soak pit. The major alternatives to septic tanks include mound, aerobic septic, and cesspool systems, as well as sander filter, constructed wetlands, and drip irrigation. 3. 25 = 4 crates required. Septic system maintenance and pumping schedules. Design of Soak Pit. Soakaway Design in Brentwood. The base should be constructed flat to a tolerance of 10mm in 3m. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. 50 DIAMETER OF SOAKAWAY (METERS) 3. The design and construction of septic system drainage fields must be carried out by qualified and competent contractors. mechanisms operating within soakaway drainage systems and these should be taken into account during soakaway design. In this case, we are referring to a drainage field, also known as a land drain. DETENTION PERIOD:- 12 to 36 hrs (adopted 24hrs) LENGTH TO WIDTH RATIO:- Length is 2 to3 times of width. Septic Tank Soakaway Design Guide. A t = p X V p X 0. You must ensure there is a 2m gap between your trenches. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. 5. Download dwg Free - 99. g. 3. There must be at least 48 inches between the inlet and outlet baffles. CAD blocks can be downloaded and used for your own personal or company design use only. More than this and the tank is full! Once it’s full of solids it should be emptied immediately. 5 x 8 x 6 = 216 cubic feet. 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. The process is as follow: Bore a hole 150mm dia to 1m below ground level. What is a septic tank or treatment plant drainage field/soakaway used for? A septic tank feeding to a drainage field (also called a land drain) A drainage field is used to dispense liquid waste from a septic tank or treatment plant. 1. Septic Tank & Sewage Treatment services; Groundwork, Landscaping - and much more! We are skilled and experienced drainage and water supply consultants and technicians offering a fast and efficient service for all problems with blocked, cracked or collpased drains, burst or leaking pipes and septic tank, soakaway & waste treatment systems. Soakaway designs are crucial in Camborne TR14 7 to ensure water is able to filter through the surfacing and head back into the environment. This discharge does not require a Drainage Field. RotoTank™ has the largest variety of tanks in Southern Africa, making tanks from as small as a 50lt-tank to up 40 000lt TANK. The Oregon DEQ is joining efforts with industry professionals and private citizens to help educate Oregonians about the importance of septic systems, septic system inspections and proper septic system maintenance. Step 1. 3. Soakaway pits/trenches are however necessary. Septic Tank is deeper than Soakaway, unlike Soakaway, the body plastered and the floor, floored. 1. Soak Pit Construction and Design Manual. The effluent from the septic tank, or, preferably,. A soakaway is a drainage system in Bedfordshire LU1 4 which involves digging a hole in the ground and it filling with rubble. 1. For more free help and advice visit how to construct a soakaway pit – septic tank soakaway construction. It can be sent via a reticulation system to a municipal treatment plant. A soakaway does not provide biological treatment. This allows rain water to gradually filter through the surfacing and go back in the ground. Studies have found frequent occurrences of bacteria in groundwater and household wells. 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. 1500 gal 2 compartment septic tank. #septictank #septictanktv #septictanksoakaway. In this case, we are referring to a drainage field, also known as a land drain. 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. Excavated Dimensions For Soakaway = 1. The size of the septic tank is based on the number of occupants in the house or it is based on the number of bedrooms in the property. Use septic-safe toilet paper.