. Y12mm diameter bars to septic tank slab Kg Y10mm diameter bars to septic tank and soak-away pits Finishings Cement and sand (1:3) 25mm thick cement screed mix 1:3 finished to wooden float finish to the floor of the inspection chambers and gulley traps Ditto but to septic tank with water proofing cement to applied to manufacturer's instructionsThe pipe within your soakaway construction should be laid to a fall of 1 in 40. Septic Tank (for pig farms) Covered Access Vent Pipe o ak w y Trench Soakaway Pit . The key document is the building regulations part – h document which can be viewed here. iii) Catch-pit. treatment with a septic tank, filt er, and an Anaerobic Upflow Reactor, developed by a company headquartered in northeast Brazil, with more th an 15 years of experience in the specialized market forFor 12 people the size should be 1,2m x 2,4m x 1,4m deep (4 032 litres). Septic Tank Soakaway Design Guide. A septic tank is a primary sedimentation tank with a long detention time of 12 to 36 hours, as opposed to 2 hours in a regular sedimentation tank. includes dimensioned plans and construction sections with technical specifications. First, decide the size of the pit as per your requirements, usually, the size with (1 x 1 x 1. 00 8 Sewerage Pipe Providing, laying, fixing and testing uPVC soil, waste, vent and rain water as per BSS 4514 & 5255 or equivalent BS specifications including uPVC fittings with solvent cement jointing or rubber ring joints, 'Dadex' , 'Beta' , 'Master'make as approved by the Engineer complete inAscertain whether or not your soakaway drainage field site is in an area designated by the Environment Agency as a Groundwater Source Protection Zone 1. Fill with water to depth of 300mm. The soakaway system and the surrounding soil should be able to soak away the same. Less often, soakaways are also used to dispose of effluent from septic tanks, known as "leaching fields". Materials and labour fees. Thus the pit latrine will be a soak-away pit. 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. Y12mm diameter bars to septic tank slab Kg Y10mm diameter bars to septic tank and soak-away pits Finishings Cement and sand (1:3) 25mm thick cement screed mix 1:3 finished to wooden float finish to the floor of the inspection chambers and gulley traps Ditto but to septic tank with water proofing cement to applied to manufacturer's instructions The pipe within your soakaway construction should be laid to a fall of 1 in 40. This tank is usually installed below 1. They only hold 12 months sludge storage and if sludge starts to empty into the drainage field soil, it very quickly blocks the air spaces (porosity) in the soil, the effluent cannot soak away, you suffer a soakaway failure and the septic tank fills up. They are also referred to as dry wells, soak wells or soak pits in other countries, but in the UK are known as soakaways. Gender Elderly and Children. Location. Septic tanks take sewage (greySeptic tanks will be regarded as temporary treatment systems. This technique is commonly used for discharging wastewater and it also helps in recharging groundwater bodies. Dig a trench that runs from your rainwater pipes on the side of your house to the soakaway pit. A septic tank is deeper than a soakaway and is plastered before being levelled, however, a soakaway is not handled in the same manner because the floor is left in its current condition and it is also shallower. SOAKAGE PIT b. One section is the septic tank, the other section is the soakaway pit. 5 3. This includes both the cost of materials for building Soakaway tanks as well as labour charges. Septic tanks must be constructed to standard design. septic tank and soakaway, a household connection is needed. The soak away pit is of natural earth at the bottom which allows the wastewater to naturally drain the liquids down into the earth. While they may be effective for managing stormwater runoff, they do not filter or treat effluent, which can be detrimental to groundwater. It is a gravity-fed, vertical underground system that can capture surface water from impervious surfaces, then store and gradually infiltrate the water. Sludge digested,volume 23. When is a soakaway possible? A soakaway is possible when: The ground infiltration rate is greater than 1×10. Soak Pit Construction / How to build a soakaway. Tanks that must be installed partially in the groundwater or subject toFree CAD and BIM blocks library - content for AutoCAD, AutoCAD LT, Revit, Inventor, Fusion 360 and other 2D and 3D CAD applications by Autodesk. Both work in the same way — removing excess water. What is the difference between septic tank and soakage pit? A soakaway is a hole dug in the ground and filled with rubble and coarse stones, designed to disperse water back into the surrounding ground without flooding. 4 m 3. 2m. FREE Encyclopedia of Building & Environmental Inspection, Testing, Diagnosis, Repair. soak pit - Download as a PDF or view online for free. Damage to the septic tank itself - internal damage to parts of the septic. V soak = 15 × 300/1000. 1 construction of 10 user septic tank as per standard design, drawing & instruction of engineer –in charge etc all complete. The general components of a soakaway system are described below: i) Dung Channel Purpose : To collect and convey wastewater to the inlet of the catch-pit. minimum dimension of the septic tank. 7. to soakaway pits outlet to soakaway pits section a-a manhole 600x500mm with c. Not widely used in South Africa, except where existing septic tank and soakaway systems have been converted for convenience and/or environmental reasons. septic tank and soak away pit- dispensary a. These are called septic tanks. Viewer. 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. Soakaways should be constructed in a circuit to make a continuous loop. A STS consists of a septic tank, a soakaway pit or some soakaway trenches, and the surrounding soil into which wastewater is finally disposed. Jun 15, 2019 - Building A Soakaway For A Septic TankThere are many ways to constructing and building a soakaway for a septic tank. Building septic tank using lightweight concrete blocks with a thin skim of. Step 2 - Dig the hole. Septic Tank কি আমরা সত্যিই সঠিক বানাই 🤦How To Construct Septic Tank & Soak Pit ? বাড়ি নির্মাণের সময়. Excavated Dimensions For Soakaway = 1. They have supplied multiple potable and sewage systems, to our client between 2017 and 2022. of users 15 40 60 50 30 7 7 8 9 6 TYPE 3 4 1 2 40 60 3. There is also a design where the Dry Well of the Dry Well Septic System can. septic tank, twin-pits for pour-flush toilets, biogas settler, anaerobic baffled reactor, etc. Septic Tank is deeper than Soakaway, unlike Soakaway, the body plastered and the floor, floored. Percolation test procedure for surface water soakaways. 8m 3 . It is usually buried underground. (Soakaway, Soak Pit. Re: Construction Of BIODIGESTER SYSTEM SOAKAWAY In Ijebu Ode by phabulousangel ( m ): 8:30am On Jul 16, 2021. or entering the pit 2, 3. and will be uneconomical and waste of money for a tank meant for a small household. In North America approximately 25% of the population relies on septic tanks; this can include suburbs and small towns as well as rural areas. See more ideas about septic tank design, septic tank, sewage system. 5m deep and connected to the sewer line. Pedro gonzalez ramirez. Within the septic tank and soakaway range detailed above if septic tank systems already in place, otherwise capital cost much higher. For 16 to 20 people the size should be 1,2m x 2,6m x 1,4m deep (4 368 litres). A septic tank is a key component of the septic system or sewer system. ) and a relatively safe way of discharging it to the environment and therewith recharging groundwater. Ecoflo finds a better way. 5 1. Septic tanks are suitable for the disposal of night soil in rural and urban areas which don’t have sewerage systems. So we are briefly describing soak pit design and providing structural design for soakwell in AutoCAD. Therefore, we would need 10,058/3058 = 3. Ensure access for emptying of septic tank, as well as availability of sludge treatment and disposal. Soak Pit Construction / How to build a soakaway. Septic Tank is deeper than Soakaway, unlike Soakaway, the body plastered and the floor, floored. For example, you could dig a soakaway pit. C 150mm thick and 900mm wide around in dig where brick stays. Step 4: Round the number up to the nearest available septic tank size. Step 5 – Add Gravel and Complete the Soakaway. On a simple hierarchy of sewerage facilities, the septic tank falls between the 'long-drop pit latrine', the function ofAlso Watch My Other Videos Link is Given Below: Videos are available in English । विडियोज़ हिन्दी में भी दिए गए हैं ।(video related to. 1. In this instance, a pressure-system is used to deliver the sewage to a standardJan 27, 2021 - Explore Iheks's board "SOAKAWAY" on Pinterest. The solids being heavier than the waste liquids, settles down at the bottom of the. com Soak away for sewage effluent. A standard septic tank in Nigeria is 8 by 10. This video will show you just how easy it is to construct a soakaway pit. In some applications, the disposal field is at a higher elevation than the building site. RotoTank™ has the largest variety of tanks in Southern Africa, making tanks from as small as a 50lt-tank to up 40 000lt TANK. 00 3. 11 Sep 2016. The soak. It will also show you which septic tank scenarios work best. Cracked pipes. Soak Pit Design. 100 ft. The waste water from the biodigester is us. SOAK AWAY PIT -PROVISIONAL TOTAL MATERIALS COST FOR SEPTIC TANK AND SOAKAWAY PIT APRIL, 2018 Page/2. Leaks. This is useful for absorbing small amounts of clean water such as the runoff from an outdoor shower or a swimming pool. In this chapter, therefore, levels of service lower than this will not be discussed. For small tanks theOnce it sinks to the level u actually wang it, get a water pump and start sucking out the water inside the septic tank. I have been searching around on the internet for advice on how best to construct a new one but have come up against a lot of conflicting information. This video will teach you HOW TO MAKE SEPTIC TANK and soak away(from START to FINISH), you will see the Septic Tank Installation Process. The septic tank's corrosive environment may. You should not direct rain water into a cess pit or septic tank either (see our project. 5 3. 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. ALL septic tanks that currently ultimately discharge into watercourses will have to be either: Replaced using a sewage treatment plant with full EN 12566-3 Certification instead, or. Septic tank and absorption pit. e. The tank should be made water tight with a 25mm coating of cement plaster, applied in two coats, in order to avoid infiltration around the tank and maintain and anaerobic space. This Standard gives design guidance on how soakaways shall be incorporated into systems used to treat and store road runoff prior to discharging to ground. 15m from any building, and sufficiently distant from any other. The material used in the construction of septic tank range from stone or brick masonry to concrete for a bigger community septic tank. 1 A soak-away pit is an underground pit for storage of waste water or effluent from a septic tank which facilitates percolation into the soil. On the next day, fill to the 300mm mark again and observe the time it takes to soakaway in […]The title of the code which was originally ‘Code of practice for design and construction of septic tank: Part 1 Small installations, and Part 2 Large installations’, have also been amended to read ‘Code of practice for installation of septic tanks: Part 2 Secondary treatment and disposal of septic tank effluent’. Septic tanks take sewage (greyRM G2GD91 – Soak away crate in position in a domestic garden ready to be wrapped and buried for drainage. #septictank #septictanksoakaway #soakawaypit Soak Pit Construction and Design Manual. 5m deep in a lower part of your garden and preferably at the bottom of a slope. 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. 4 Construction, Operation and Maintenance of Septic Tanks A septic tank is a large underground, watertight container, although the size of the tank is legally determined by the number of bedrooms in the house, it is about 2. BOX 1923, 41185 DODOMA. 25 = 4 crates required. As an aid, mark a stick 300mm from one end, place in the hole and fill up to the mark. Reaction score. 48 30,773. Soakaway Design. 8m x 1. latrines in Ife North Local. . Containment (septic tank and soak pit): The septic tank is sealed and impermeable but the soak pit is permeable and designed to leach effluent into the surrounding soil. A backhoe will remove the soil from the pit and will dig trenches to install the piping to and from the septic tank. A soakaway is a system that allows wastewater to be absorbed into the ground. Reason 4: Septic Tank construction and septic system capacity. 0m from any building sewer or septic tank and 7. The soakaway is typically not that deep when compared to a septic tank. For an easy-to-access garden, you can expect a small soakaway to cost around £1,000. It's Green and pure 4. 1 Sewers Factors that must be considered in determining the required capacities of sanitary sewers include: 3. size 150mm min. Communal toilet connected to a septic tank and drainage field Vent pipe Septic tank Minimum slope 1:40 (2. Onsite septic tank systems sometimes implemented with soak-away pits are usually adopted in most buildings at low income countries of Africa because of their affordability and ease of construction. The owner must provide all septic tanks as part of the owner’s infrastructure works. Building layout plan 7 3. septic tank -provisional b. Yes it's a septic tank soak away. 1: Septic tank calculation tool (Excel document) 5 Footrest and drophole design 6 Checklist for concrete quality 7 Design summary for VIP latrines and UDDT toilets 8 Design considerations for difficult conditionsA septic tank is a tank that separates particles from wastewater and then releases the liquid septic waste to the earth through a drainage field that has been properly built and constructed. 8m. The septic tank requires emptying at least once every 12 months by a. Soakaway Pit Design. A typical soak route in Nigeria is typically 4 by 4. Rods and planks also available (not on the pics) Re: Building Of A Septic/soakaway In 13 Days - Photos by ITbomb ( m ): 8:33pm On Feb 09, 2020. The opening of a soakaway screen should never be too small as it may prevent the wastewater from moving through. The biological tank break down human waste into water by help of aerobic a reactions and the water is then soaked away into a soakaway pit or french drain. The tank is much smaller than required by building codes, and the design is missing some important items such as internal baffles. There often is little science in the exact size, depth, and construction of a soakaway. 1. drain pipe 100 mm diameter, 1. The broken block helps to soak up the waste water making room for more intakes. KoroSan Guideline #3 Septic tank construction using concrete blocks 5 above daily volumes may be significantly higher. 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. 5m wide and 1. Minimum capacity = 1 cubic meter (10 cubic feet). The length of the septic tank should be 2. For example, 50m2 roof area requires a rubble filled soakaway of (50m 2 x(50/3000))/0. Detailed design guidance is given in BRE Digest 365 or CIRIA Report C753. Construction Practices 5. Social Considerations. The soakaway is a covered, unsealed pit lined with bricks or stone. Drainage fields allow wastewater to be safely dispersed into the ground and prevent pollution—they must meet British standards. A Soakaway is a pit or trench where surface water is allowed to collect and slowly soak into the surrounding soil or rock. 6 kgs Tank bottom 20. The soakaway pit is to be lined with stones, bricks, or concrete blocks laid up. I've summarised an easy method on how to build a septic t. The system consists of several stages, supply to the tank, the tank itself and the soak field. 634–641. A "Cesspool" is a large holding tank that is completely sealed having only an inlet and a vented air outlet. moved the location of the discharge to more than 10 metres away from. Settling and anaerobic. Cast in situ concrete septic tank 20 6. This video will show you just how easy it is to construct a soakaway pit. SEPTIC TANK AND SOAK AWAY PIT A. Download Now Download to read offline. Septic Tank is installed where there is no proper drainage system. The well-established brand name, RotoTank™, has outlasted its no-nonsense 10-year warranty over and over. 00. In this article, a detailed septic distances table describes distance requirements between septic components. Septic Tanks, Soakaway Pits and Holding Tanks have been effected. 3. For example, you could dig a soakaway pit. You buy cement, sharp sand and also original water proof cement/additive. The soak pit may be of any suitable shape preferably circular. Step 1. The wording shall be in Arabic and English liThe foul sewage system from this property discharges to a septic tank and soakaway. Moved to SEPTIC TANK / FIELD INSTALLATION HEALTH HAZARDS . Project cost - #250,000. In this illustration the seepage pit is being used to dispose of septic effluent from a septic tank. 13 The purpose of this Standard is to provide advice on the design and construction of soakaways comprising an excavated pit or trench rather than systems such as attenuation ponds for. I have a septic tank and soakaway which is located in a neighbouring farmers field. Soak Pit Design What is a Soak Pit? : A soak pit which is also called a soakaway is a closed porous wall chamber that is primary design to allows water to slowly soak into the ground. 50 Septic Tank 1. If building one’s own tank from brick the walls should be at least 230mm thick, and. 5m-1. Septic Tank Soakaway Construction The soak-pit is connected to a primary treatment unit and serves as a connection between the septic tank and the ground. Septic tank regulations: If you own or are considering buying a property with a septic tank. The. For more free help and advice visit how to construct a soakaway pit – septic tank soakaway construction. Soakaway designs are crucial to ensure water is able to filter through the surfacing and head back into the environment. Rod 12mm= 15 – 20 pcs. The waste water from the bathroom, kitchen etc. 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. by Aventures ( m ): 4:34pm On Jul 09, 2012. 8m deep) Excavated Dimensions For Septic Tank = 3m x 3m x 3. each 30773. Septic tanks are generally installed by isolated communities like schools, hospitals & institutions. On average, you’ll pay about £3,700 for the supply and installation of a 2,800 litre septic tank. Septic tank effluent enters the pit and is temporarily stored until it gradually infiltrates into the sidewall soil. RotoTank™ has three strategically placed large factories in South Africa,. Septic Tank Soakaway ConstructionReading time: 2 minutes. 150x150mm DIA LONS 210 980 210. 31. Construction development of a septic tank and absorption well design. RotoTank™ has three strategically placed large factories in South Africa, in. (i) Laterals leading to each seepage pit must be at least four inches in diameter with a minimum slope of 1/8 inch per foot. For a larger septic tank (4,800 litres), you can expect to pay around £5,300 for supply and installation. 2 to 4 times the length width. v) Soakaway Pit/Trench. True to the structure and composition of a Septic System, a Dry Well Septic System comprises two main parts: the septic tank and the dry well. 2. 00 Large trees 7. c. 1. 8m wide, 1. EcoBloc Flex is a modular geocellular unit which is used as a below ground stormwater attenuation or soakaway tank. 25 Where: The tank which Stores a waste water of House or building is called Septic Tank. Nanotech Water Technologies has always been very responsive to all requests and forever eager to improve and simplify our processes and standards. In other words, cesspools provide temporary. 00 7. Building Number Plate: 1: 95KB:. Drainage field problems such as soggy areas of ground or ‘pooling’ around the tank or soakaway. Septic tank: Length 8ft 3", width 7ft, depth 8ft 10" Soak away: Length 6ft, width 5ft, depth 6ft Carpenter N35000 Iron bender N35000 Bricklayer N65000 I think I read somewhere on this forum that the depth of a septic tank/ soak away must be 12ft. shedule of materials septic tank and soakaway pit (30-90 users) general summary amount tzs septic tank and soak away pit- dispensary a. Day 1 - Digging of the pit and moving of material to the site. Routine maintenance of pipe network essential. 4268/175 = 24 lengths of rod. Fill the 300mm square hole to at least the 300mm mark and allow to soakaway over night. Elevation-view sketch of a tank and drywell or leaching pit or "seepage pit" system used at some older homes. 5 meters from the boundary. The base should be constructed flat to a tolerance of 10mm in 3m. Total Accumulated Sludge = 30 litres x 5 persons x 2 years = 300 Litres. GENERAL PRECAUTIONS. 1. Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum. It helps manage and disperse the effluent (wastewater. A soak pit is an underground structure that is designed to receive and manage surface water or wastewater. POSITIONS. Natural. A Looped Soakaway System. 2. 25m3 of water, so 1m3 divided by 0. Excavate the pit where you will pour the concrete tank. 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. Soakaway screens are put in place to eradicate suspended solids and coarse matter found in the wastewater. The chamber is directly connected to a primary. A soakaway must be 2. There are different types of septic tank soakaway, and in some cases, this element to your septic system can be the cause of. 2) m3 is suitable for a family with 4-5 members, which has the capacity to carry 300 per lit discharge in the day. Next up is adding the waste feed pipe. The soil on a site must be suitable for a soakaway to work properly. 20. Dig a trench that runs from your rainwater pipes on the side of your house to the soakaway pit. Steps: To build a basic stand-alone soakaway, dig a pit in your soft turf no less than 1m2 and 1. You may need to introduce columns and beams if the span is more than 4ft i. Oxfam (2008): Septic Tank Guidelines. The soakaway pit and drainage trench can be dug by hand with a shovel, or you can hire a mini digger to make the work easier for you. Average flow 10 m3/d Ground Level 25. 38 times the volume of the hole. If you hit a layer of clay before reaching the required depth, simply make the soak away longer to make up for the lack of depth. Fill the hole with approximately 150mm of water and allow it to seep away completely; no need to measure the time. Make sure to be alert to potential warning signs such as wet spots in the yard, slow-draining toilets or drains, sewage odours and lush patches of grass. Country. Rectangular brick septic tank 21 7. Besides, the bio. Solids accumulated 540 kgs Water Level 22. You should not direct rain water into a cess pit or septic tank either. A typical test for a surface water soakaway would be a pit 1000 x 1000 x 2000mm filled to the brim and the level recorded at various times until the pit is empty. There are two main parts to the system (apart from the flush toilet): an insulated tank which houses the worms with their associated ecosystem, and a ‘greenfilter’ or soakaway area to allow. . 70, pp. A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. 2m by 1. THE SOAKAWAY SYSTEM A soakaway system normally includes screens, a catch pit, a septic tank, soakaway pit and trenches, and the associated dung channels. THE CHOICE AND CONSTRUCTION OF SOAKAWAYS 2 2. 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. Surface water soakaway drainage crates that fill a pit dug to allow rainwater to soak away. Less often, soakaways are also used to dispose of effluent from septic tanks, known as "leaching fields". This will stabilize the base beneath the septic tank to reduce the possibility of shifting or cracking. From excavation to. The EN 12566-3 only tests the percentage reduction. They only hold 12 months sludge storage and if sludge starts to empty into the drainage field soil, it very quickly blocks the air spaces (porosity) in the soil, the effluent cannot soak away, you suffer a. : A soak pit which is also called a soakaway is a closed porous wall chamber that is primary design to allows water to slowly. All septic tanks require emptying ONCE A YEAR. Not even all that claimed to be architect are. While digging was ongoing, materials were already on site. Step 2- Fill P. Containment (septic tank and soak pit): The septic tank is sealed and impermeable but the soak pit is permeable and designed to leach effluent into the surrounding soil. . Materials and labour fees. Scum on the surface is also prevented from leaving the tank. Soakaway Construction. 2 It should be located no closer than 30 m from a water source. 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. The system consists of several stages, supply to the tank, the tank itself and the soak field. The Septic Tank has now been superseded by the sewage treatment plant. For an easy-to-access garden, you can expect a small soakaway to cost around £1,000. The septic tank separates the solids, dense liquids, and effluent. While a septic tank treats and discharges water, a soak pit simply allows water to. OTHER INFORMATION. SOAKAGE PIT b. It will also show you which septic tank work best with a septic tank soakaway pit. Library. For the Septic tank design, the depth of the tank should not be less than 1. A soakaway crate or soakaway pit is not. Okay so, first of all, you need to read all of the. Stone Soakaway Cesspool. 3. A soak pit, also known as a soakaway or septic tank soakaway, is a simple and effective way to manage wastewater from a household or small-scale development. The outlet of the septic tank should be compulsorily connected to a soak pit. LAST UPDATED: 9th January 2023 by The Editorial Team. Our tanks are built to last. Distance Between Septic Tank and Soak Pit. 1. Microorganisms in the anaerobic environment in the tank digest the sludge and scum. All soakaways must be sited at least 5m from any building or road and preferably at least 2. 2014). This page includes describes some important construction details for soakaway pits, soakaway trenches and soakaway. A septic tank is a system that collects and treats wastewater from a property. Biodigester is an on-site system, which consumes a small space of 1. The recommended size of a septic tank is a function of the volume of wastewater it receives. In Nigeria, Septic Tank and Soakaway Pit are a combined system. In the construction of soakaways, proper precautions shall be taken to prevent the side walls from collapsing while workmen are in the hole. The middle layer of effluent exits the tank and travels through underground perforated pipes into the. c Brick Ballast Soakage Pit Cft 144. O. Your septic tank or small sewage treatment plant must treat the sewage before discharging it into the ground via a drainage field, you cannot use a soakaway. 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. 8m 3. A standard septic tank in Nigeria is 8 by 10. The size and capacity of a septic tank or a soak pit depend on the number of users, daily water usage, and soil conditions. The top 3 septic tank problems. Fill the bottom of the pit with at least 6 inches of sand or gravel. A septic tank is a key component of the septic system or sewer system. Our tanks are built to last. Fill the soakaway hole with gravel or rubble up to the point that the layer is about 2cm away from the surface of the hole. Sanitary and rain drainage. Details. A Soak Pit, also known as a soakaway or leach pit, is a covered, porous-walled chamber set in the ground that allows water to slowly percolate.