When installing a septic tank soakaway, it’s important to refer to Building Regulations Part H to ensure the installation meets the required standards, though we have. or. However, this is not mentioned in the 2010 Building regulations guide. Step 2. This totally depends on the size of the soakaway pit and the bar spacing. 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’. Often incorrectly called soakaways, a drainage field is much more than just a soakaway. Installation of the soak pit requires a small area. the septic tank must. Effectively becoming the second part of a 'drainage system' from a two or four bedroomed house. Soakaway Design in Cirencester. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. uk create new email Additonally you can find help on the Government website: opens in a new window Rules About Septic Tanks And Soakaways. 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. Naval architecture ship design for marine engineers (152) Power transmission and. Box 1923, 41185 Dodoma Drawing title 24 APRIL 2018 DCNM STANDARD DESIGN FOR COUNCIL LEVEL HOSPITALS IN TANZANIA JCR STP A/101 PRESIDENT'S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENTS, MKAPA BUILDING, P. POLPRASERT, C. The. How does a Septic Tank System (STS) work? 4. A soakaway is a drainage system in Wallingford OX10 0 which involves digging a hole in the ground and it filling with rubble. Soakaway Design in Elgin. 3. Soakaway designs are crucial in Puddle PL30 5 to ensure water is able to filter through the surfacing and head back into the environment. You then time how long the water takes to. Soakaway designs are crucial in Oxford OX1 3 to ensure water is able to filter through the surfacing and head back into the environment. The wastewater flows through an opening at the top of a wall separating the two compartments into the. 4268/175 = 24 lengths of rod. plain pipe from the septic tank to the soakaway, followed by 16 metres of specially perforated 110mm diameter piping and fittings. 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 Uckfield TN22 1 to ensure water is able to filter through the surfacing and head back into the environment. Replace you old sewage system and install a new one the cost of £8,000 – £12,000. Septic tank prices are $1,000 to $1,500 for an average 1,000-gallon tank. The reason for the change is because it is no longer considered that the waste water is clean enough to pass. Soakaway Design in Beer. Septic Tank Regulations in Swansea -. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. 1. The floor of the septic tank must be made of reinforced concrete that is 100 mm deep and reinforced in accordance with local building codes. Soakaway Design in Stafford. 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. The Environmental Agency and UK Building Regulations class any work to update, repair or replace an existing septic tank. When installing the tank, the lid is filled with concrete prior to use to ensure it stays closed off. There are a few subtle yet important differences between septic tanks. 3. Septic tank drainage field costs vary depending on its size and type. A soakaway is a drainage system in Ireland ZE2 9 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. This reduces the quantity of solids and also changes its composition to sludge, which builds up in the bottom of the tank. A soakaway is a drainage system in Rhodesia S80 3 which involves digging a hole in the ground and it filling with rubble. Expect to pay between £830 and £1,140 to install a soakaway drain underneath a driveway. Soakaway Design in Carburton. A soakaway is a drainage system in Lambeth SE1 7 which involves digging a hole in the ground and it filling with rubble. It is best to construct a single compartment for small capacity septic tanks. The depth or height of Septic tank is in between 1. Generally these pipe. 15 There shall be no physical connection between a public or private potable water supply system and a sewer. The following points offer a quick overview of the main rules for septic tanks: Tank must be rated to BS EN 12566-1 standards. This allows rain water to gradually filter through the surfacing and go back in the ground. One option for a septic system in clay soil is to use a 1000 gallon septic tank as an effluent dosing chamber. GET IN TOUCH What is a Soakaway? A soakaway is a drainage system which involves digging a hole in the ground and it filling with rubble. Soakaway Design in Basingstoke. septic tank, twin-pits for pour-flush toilets, biogas settler, anaerobic baffled reactor, etc. How to construct a septic tank soakaway. septic tanks. (i) satisfy the regulations set out in Part P of the National Building Regulations and Building Standards Act; and. or raised bed, depending on septic design type. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. In septic tank design, a detention period of 24 to 48 hours is considered depending on the average daily sewage flow. Conventional Septic Leach Fields [ED. A septic tank consists of one or more concrete or plastic tanks of between 4000 and 7500 liters (1,000 and 2,000 gallons); one end is connected to an inlet wastewater pipe and the other to a septic drain field. Soakaway designs are crucial in Spalding PE11 2 to ensure water is able to filter through the surfacing and head back into the environment. Septic tanks come in many shapes and sizes. Septic tank suppliers, installation, septic system and soakaway problems for the home owner explained. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. 4/1. Soakaway Design in Law. The well-established brand name, RotoTank™, has outlasted its no-nonsense 10-year warranty over and over. The current use and design of septic tanks in the UK is specified by British Standard . Example B: 4 Bedroom + 5 Bedroom = 12 people: 12 x 150 = 1800L = 2000L = 3800L. A soakaway is a drainage system in Ludlow SY8 1 which involves digging a hole in the ground and it filling with rubble. This discharge does not require a Drainage Field. Size Of Soakaway and Septic Tank. A soakaway is a drainage system in Lawn SN3 1 which involves digging a hole in the ground and it filling with rubble. You're not allowed to use. 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. It disperses septic effluent into the soil, without causing problems due to soil saturation and 'Backing-up' of the system. The soak pit shall not be less than 900mm in diameter& 1500mm in depth below the invert level of the inlet pipe. 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. Remember, septic tanks are designed to encourage the separation and decomposition of solid waste. V p = Percolation value. Surface discharge of septic tank or aerobic unit effluent shall not be approved by the Department of Health or a local health department acting as its agent. Soakaway Design in Boston West. Over 60% of all sites in the UK FAIL the three. The existing wastewater disposal system in use in the study area is the septic tank - soakaway system for individual buildings. Area (A) = V X P X 0. Our experienced engineers can fix any problem you might see with your septic system. Cesspit Septic Tank - How it works - Design. 2. 5 tonnes and has a working capacity for up to 8 persons with 300mm risers available if required to bring access opening to ground level. Soakaway designs are crucial in Hastings TN34 2 to ensure water is able to filter through the surfacing and head back into the environment. This allows rain water to gradually filter through the surfacing and go back in the ground. RAJPUT, V. A inspection chamber must be installed between the septic tank and the soakaway. For over 27 years, I’ve enjoyed positive working relationships with clients and Health Departments in 30 counties in Indiana. Septic Tank Maintenance in Bagshot -. The first sign that a soakaway is blocked, is water pooling on the surface, and gradually building up. 1:2008. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Studies have found frequent occurrences of bacteria in groundwater and household wells. 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 Church. A septic drainage field (or foul water soakaway system) enables effluent discharge from septic tanks and sewage treatment plants to be dispersed through the ground and consists of a series of perforated pipes laid in an arrangement of trenches situated beneath a soft landscaped area (i. Soakaway designs are crucial in Chapelgate PE12 0 to ensure water is able to filter through the surfacing and head back into the environment. The tank is primarily a settling tank where the organic matter contained in. The soakaway is also known as a drainfield or leech field. Soakaway Design in Chadwick. Discharge to a watercourse (stream, ditch, pond, etc) is not allowed. 5 x 8 x 6 = 216 cubic feet. S. Take the time that water takes to soakaway. 12 Component requirements; 5. Soakaway Design in Midlothian. How to buy, own, maintain, repair or install a septic system, septic tank, and septic drainfield, leach field or soakaway bed. The system also has a. This allows rain water to gradually filter through the surfacing and go back in the ground. while A Soak Pit or a soakaway is a closed chamber directly connected to a septic tank. traditional septic tank soakaway systems on water quality in Ireland. RELATED: 10 STEPS TO OWNING A HOME IN KENYA. g. S. 8m x 1. On the next day, fill to the 300mm mark again and observe the time it takes to soakaway in […]A septic tank works on a pH balance and bacterial activity to break down the solid waste, and once the tank is full, it will overflow into a connected drain field, or often, a soakaway. Let us estimate the Tank size for a Home – 5 Members. Septic Tank Design 2-3 Chambers. 6. This allows rain water to gradually filter through the surfacing and go back in the ground. Bore a hole 150mm in diameter with an auger, to a depth of one metre. 70, pp. 6. RotoTank™ has the largest variety of tanks in Southern Africa, making tanks from as small as a 50lt-tank to up 40 000lt TANK. 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. Septic Tank Size Calculation based Per User Consumption. A complete septic system—including a leach field (also called a drain field), tank, and piping—costs $10,000 to $25,000. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. This ensures that there is uniform ponding and infiltration across the base of the soakaway. A Sewage Treatment Plant can discharge directly to a drainage ditch, watercourse or river. This allows rain water to gradually filter through the surfacing and go back in the ground. Many people get confused between a drainage field and a soakaway and often the terms are used interchangeable. Soakaway Design in Omagh. Installing an efficient French drain/soak away system is imperative as it can prevent septic tank. CAPACITY OF SEPTIC TANK:-capable of storing sewage flow during detention period &extra volume of sludge for . 30 5. The premium BioDisc® sewage treatment system is available in four sizes for all types of domestic applications. S. Soakaway designs are crucial in Chesterfield S41 7 to ensure water is able to filter through the surfacing and head back into the environment. A drainage field or mound serving a wastewater treatment plant or septic tank should be located: at least 10m from a watercourse or permeable drain. 4. 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. Design consideration of Soak Pit. V = the time is seconds for the water in the test hole to drop by 1mm. The solids settle to the bottom, where microorganisms decompose them. through which domestic wastewater. g. 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 Clearwell GL16 8 to ensure water is able to filter through the surfacing and head back into the environment. Septic tanks will be regarded as temporary treatment systems. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Ensure lid remains in place. Overall, the function of a RotoTank™ Soak away tank is to provide a sustainable and cost-effective solution for managing wastewater and stormwater runoff, while minimizing the risk of environmental contamination and protecting public health. If there is no intention or no need to reuse wastewater, collected stormwater or greywater, soak pits can offer a cost-efficient opportunity for a partial treatment of waste- grey- or stormwater from a primary treatment (e. Therefore, we would need 10,058/3058 = 3. Soakaway designs are crucial in Hertfordshire WD5 0 to ensure water is able to filter through the surfacing and head back into the environment. 16-3-101 et seq. This allows rain water to gradually filter through the surfacing and go back in the ground. [2]TABLE 1 SEPTIC TANK SIZES No. 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. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. The minimum capacity of the pit should accommodate all the wastewater produced during one washing or in one day, whichever figure is the greater. A wastewater treatment system is an effective, economical way of treating wastewater from buildings. 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 used for rainwater or stormwater, a drainage field is used for wastewater (cleaned sewage, or effluent. 8m long, 1. Septic Tank Regulations in Shere -. This should be a straightforward task if. 25m3 of water, so 1m3 divided by 0. Soakaway designs are crucial in Rock PL27 6 to ensure water is able to filter through the surfacing and head back into the environment. EN 12566-1:2000. Design of soakaway. So if we take our Brett Martin Stormcrate crates as an example, each crate holds 0. i light duty cover from septic tank outlet 225mm blockwork wall soakaway pit plan r1250 225 100 500-800 8000 gravel fill max. Septic Tank Regulations in Rock -. But the length of a reinforcement rod is 10,058mm and the span to be covered is 3048mm. a soakaway (designed for draining rainwater. Soakaway Design in Barnsley. 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. Soakaway Design in Hopeman. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. It serves the function of slowly letting wastewater soak into the ground. Septic Tank Soakaway Design Guide. Soakaway = Dispersal of rainwater. 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. The design of the soil treatment. It can be sent to a septic tank and soakaway where bacteria work on it and reduce the volume. This article provides answers to common questios about the required diistances between septic system components and. An 800 Litre Soakaway will cost between £1,000 and £1,100, while a 950 Litre Soakaway will cost between £1,100 and £1,200. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. How much Reinforcements for soakaway Septic tank. Wisconsin Leech. The design should include components such as the septic tank, distribution box, and drain field layout. For ease, we have created a simple table. 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. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. (soakaway), or to a suitable watercourse where approved by the Regulator, and where a septic tank will not meet the required standards. A Soakaway is used in a Septic Tank or Sewerage Treatment Plant system when the discharge from your tank is not emitted directly to a watercourse. A new septic system costs $3,500 to $8,500 installed for a conventional septic tank. Authority. The size and capacity of a septic tank or a soak pit depend on the number of users, daily water usage, and soil conditions. SEPTIC TANK REINFORCEMENT ARRANGEMENT 05-200 B 05-200 B 05-200 B R 100 4-200 R 100 7-250 B R 100 7-250 B. For a soakaway, liquid either from a septic tank or rainwater would enter the backfilled hole and drain away. 35-11-2004; and W. Call us on 0800 3101092 or via our Contact Form Here. Some advantages on why one must consider soak pit for discharging wastewater. A soakaway is a drainage system in Bristol BS5 6 which involves digging a hole in the ground and it filling with rubble. P = the max. This allows rain water to gradually filter through the surfacing and go back in the ground. In septic tank design, a detention period of 24 to 48 hours is considered depending on the average daily sewage flow. The owner must provide all septic tanks as part of the owner’s infrastructure works. 70 1. It, therefore, perform better than the single compartment tank. 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. Soakaway Design in Northampton. Soakaways also. Library. It takes approximately 5. p = Number of persons served by the tank. The construction of a drainage field is very different to the construction. To make you septic tank legal you have 3 options. soakaway is a drainage system in Sheffield S1 2 which involves digging a hole in the ground and it filling with rubble. For example, for a septic tank serving 12 people (p) discharging to a drainage field within a Vp of 20 seconds per mm: Discharge rate to drainage field = 12 × 150 = 1,800 litres per day or 1. Soakaway Design in Bagshot. See our 100 reviews on. 2. Materials such as the crate, membrane, pipe, gully,. Septic Tanks. The maximum depth to consider when determining tank capacity is 78 inches. Ensure access for emptying of septic tank, as well as availability of sludge treatment and disposal. This discharge does not require a Drainage Field. The bottom of the tank should be less than 3m below the level where the vehicle will stand. Home / Blog What is a Septic Tank Soakaway? 31/01/2022 | Posted in All Categories, Septic Tank Essentials, Soakaways A septic tank soakaway is used to. The number of bedrooms and number of people in your home will determine the dimensions of the septic tank you need. Regulations ; Sizing of a soakaway ; Minimum soakaway site distances ; Construction of soakaways and drain fields ; Percolation tests for a soakaway design ; How to carry out a percolation test ; Calculating the size of the soakaway ; Safety advice ; How to construct a septic tank soakaway pit video Try it free. 60 1. 3. A soakaway is a drainage system in Pool TR23 0 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. 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. We discuss rules of thumb used to set the size of a conventional septic drainfield. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. Poorly treated waste water from faulty septic tank systems can contaminate nearby household wells with harmful bacteria and viruses. Any plant, or conversion system, which does not have the EN12566-3 Certificate is not allowed to be sold. Ensure access for emptying of septic tank, as well as availability of sludge treatment and disposal. All septic tanks require emptying ONCE A YEAR. DESIGN AND CONSTRUCTION STANDARDS FOR SEPTIC TANKS, SOIL ABSORPTION SYSTEMS, AND OTHER SMALL WASTEWATER SYSTEMS Section 1. This is a CAD dwg typical reinforced concrete septic tank reinforcement detail. I suspect that's in part because of normal septic tank design that relies on baffles to control the flow of solids and wastewater into the tank, to control agitation inside the tank's treatment area, and to prevent the floating scum layer from blocking the tank inlet or outlet. Q is the rate of water supply. Septic Tank Regulations in Guide -. 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. You can discard the entire procedure and set up a full sewage therapy unit which CAN if they conform with the Common Binding Guidelines, release. How to Build a Soakaway in Clay Soil? Example B: 4 Bedroom + 5 Bedroom = 12 people: 12 x 150 = 1800L = 2000L = 3800L. Many peoples are asking details about the Septic Tank and Soakaway pits. You must ensure there is a 2m gap between your trenches. A Soakaway is a pit or trench where surface water is allowed to collect and slowly soak into the surrounding soil or rock. This allows rain water to gradually filter through the surfacing and go back in the ground. Authority. A t = p X V p X 0. . No of persons per family = 6 nos. A Septic Tank, commonly called a Cesspit, is simply a big concrete, brick, fibreglass or polyethylene tank, buried in the ground that takes all the wastewater from the house. On average, you’ll pay about £3,700 for the supply and installation of a 2,800 litre septic tank. 78m 2. 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. V p = Percolation value. 25 = 4 crates required. A drainage field is constructed with slotted 110mm drainage pipe (not flexible land drainage pipe). The next step is to set up the floor of the septic tank. SP-1500-2b. Soakaway designs are crucial in Northampton NN2 6 to ensure water is able to filter through the surfacing and head back into the environment. 5. 20 for sewage treatment units and. 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. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. Tel. The Oregon Septic Smart Initiative has two main goals: Provide Oregonians with easy access to important. Septic tank Minimum slope 1:40 (2. A soakaway is a drainage system in Trench TF2 7 which involves digging a hole in the ground and it filling with rubble. A soakaway is a drainage system in East Sussex BN26 6 which involves digging a hole in the ground and it filling with rubble. The “Regulations for Septic Tanks and Holding Tanks” issued by previous Ministerial Decision Number 5/86 and all those contradicting with this Decision or contravening its provisions shall be considered void. (ii) be designed in accordance with SANS 10400-P, or by a competent person. 4m above the tank bottom. 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. 4. design criteria must be applied to the settlement tank and soakaway system. Where N is the number of the user. Don’t flush non-biodegradables down the toilet. Pour water to 300mm in depth, measure from the bottom. 46 KB. The design of the septic tank is based on factors such as the . com Excavate a hole 300mm square to a depth 300mm below the proposed invert level of the soakaway pipes. 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. More than this and the tank is full! Once it’s full of solids it should be emptied immediately. This allows rain water to gradually filter through the surfacing and go back in the ground. B. Septic Tank Maintenance in Lancashire. 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. Septic Tank Construction Septic tanks are typically pre-cast concrete, and shall have two compartments with top seam construction. This allows rain water to gradually filter through the surfacing and go back in the ground. 3. Soakaway problems, blocked or needing replacement? We carry out all works relating to Drainage Fields, Rainwater and Sewage Treatment Plant Soakaways. 2 is about the disposal of septic tank effluent. So the area of Septic tank = 10. This draining system collects water from areas such as gutters and driveway drains which then flows down a pipe and into the hole. S. design and supply a holding tank to be located behind the septic tank, complete with a submersible pump and float switch to transfer the. Definition of a septic tank. Permission from the EA will only be needed if this discharge exceeds 5m squared. 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. Options for flow through tank partitions 300mm Partition wall with slots Top of partition 150mm W. We are happy to help, call us on 0800 3101092 or via our contact form. Soakaway Design in Shere. Soakaway designs are crucial in Dalmellington KA6 7 to ensure water is able to filter through the surfacing and head back into the environment. The trenches for the soakaway should be between 300mm and 900mm wide with a distance of 2m between trenches. of users All wastes TABLE 2 SOAKAGE PIT SIZES TYPE B 5 85 75 All wastes No. A drainage field provides biological treatment of the water, treating it prior to entering the ground. Septic Tank Regulations in Elgin -. L. 5 feet wide, 8 feet long, and 6 feet tall. If you have an obstructed soakaway because of a faulty septic tank,. Soakaway Design in Salisbury. a washwater usage rate of 15L/pig/day. This can be achieved by following the guidance below. Soakaway designs are crucial in Basingstoke RG21 6 to ensure water is able to filter through the surfacing and head back into the environment. A Septic Tank, commonly called a Cesspit, is simply a big concrete, brick, fibreglass or polyethylene tank, buried in the ground that. 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. A standard septic tank in Nigeria is 8 by 10. cat: Tanks. Septic Tanks and Soakaway Page 11 ANNEXURE 1 – SABS 0400-1990 Tables 1, 2 and 3 ANNEXURE 2 – Diagram of a Concrete Septic Tank. Quoting the EPA manual: Most onsite code requirements for system design of residential dwellings call for estimating the flow on a per person or per bedroom basis. Our Septic Tank system incorporates a 3-stage tank with three. 35-11-101 through W. Studies have found frequent occurrences of bacteria in groundwater and household wells. Chapter 6. There will be a pipe placed within the hole which will lead all the excess water from surrounding areas into the pit. DETENTION PERIOD:- 12 to 36 hrs (adopted 24hrs) LENGTH TO WIDTH RATIO:- Length is 2 to3 times of width. A soakaway is a drainage system in Staylittle SY24 5 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. They are designed to remove impurities and contaminants that come from the treated effluent of a septic tank. Description. Q = 80 litre/ day ; For intermittent water supply. INLET AND OUTLET TEES.