BS 6297: 2007 states that for a Sewage Treatment Plant a factor of 0. These septic component clearance distance tables below give distance requirements between septic components and wells, streams, trees, property boundaries, lakes, etc. (When calculating the size of a soak pit, the volume of water storage available for a rock-filled hole is 0. Small bore solid-free sewer: An in-house toilet discharging to a septic tank (or on-site digester) with liquids disposal viaExcavate a hole 300mm square to the proposed depth of the pit and trench. 1 For disposal of non-domestic wastewater, the setback distance shall be determined by a hydrogeological study in accordance with Section 17(b) of Chapter 3, but shall not be less than the distances shown in Table 4. The current average cost of evacuating soakaway sewage in Nigeria starts from N70,000. It should be located at a safe distance from a drinking water source (ideally more than 30 m). Vol = A × (rainfall rate/3000) This formula states that the volume of soakaway required is equal to the area to be drained (in m²) multiplied by the product of the storm rainfall rate (assumed to be 50mm/hr in UK) divided by 3000. V soak = 15 × 300/1000. 5m from any building ie wall. Don’t delay we can help you today! Call 0800 181 684 for all your drainage needs. Step 2. Or plumb into existing rain water system, by cutting slabs in situ and laying aco drain to where your down pipe is, providing levels work. Martin’s House, Waterloo Road, Dublin 4 Tel: +353 1 660 2511 Fax +353 1 668 0009 Email: infoDMRB@nra. Sizing of the soakaway will depend on how much rainwater it will have to take - however many councils will have a standard size that they are happy with. Step 2 – Prepare the crates. First tank empty in 2016 and again in early 2020. Designing a house is hugely exciting, but knowing where to start can also feel daunting. 5. Distance to House: Part H within the building regulations suggest that Soakaways will need to be more than 5 meters away from the property. a Single Dwelling House and the 2000 EPA Wastewater Treatment Manuals: Treatment Systems for Single Houses. Need our service, kindly call/WhatsApp -- ACEWELL ENGINEERING 080-52-72-9558. '. 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. Connect the trenches to flow into the hole. You can either infill with clean hardcore or crates (see what BC will accept: some insist on crates) but either way line the hole with Terram. #1 Hi guys, does anyone know whether British Standards state if there is a min distance a rainwater soakaway has to be from a property and a neighbours. 00 3. or St. Contact Teckna Group for soakaway borehole drillinghouse are joined to the underground foul water drainage by the following two methods:. 19 July 2009 at 4:39PM. The ground is not contaminated. The main factors involved in pricing the emptying of. The Building Standards technical handbooks provide guidance on achieving the standards set in the Building (Scotland) Regulations 2004 and are available in two volumes, domestic buildings and non-domestic buildings. Where deep drains are necessary, the hole should conform to this shape at the bottom, but may be enlarged above the 300mm level to enable safe excavation to be carried out. This calculation produces Vp in secs/mm [conversion = (1/Vp) /1000]. Log In. 5 Typical pit. The average lifespan of a septic system is estimated at 15 to 40 years, but it may last longer if properly maintained. Requirements vary from one area to another, but the normal minimum distance from the house is 10 feet. They look like land drains to me. Soakaway pit Pit latrine Animal trough Water source Soakaway pit 30m (min) 6m 30m (min) 40m (min) (After SKAT, 2007) Figure 2. Site Distance Requirements for Drywells This sketch (from New York's Wastewater Regulations) shows the recommended site clearances between seepage pit (used to receive septic tank effluent in this case) and other building and site features. Also, to the front of my proposed house is a road surface water drain. And one central Soakaway and we channeled the bathroom and kitchen water to the Soakaway. Pit should be at least 2mts deep by at least 1mt square. The distance you need to be away depends partly on the soil so if you are wanting to get close to the house (say, closer than 2 or 3 times the wall height) you would definitely want to talk to an engineer. 6. IIRC in areas I've lived though, 1930's have been combined drain. On 2022-01-31 by Tyler . 5 1. Ground percolation tests may help to prove that siting the soakaway nearer to the building would not be an issue. 5m of a boundary or in an area of unstable land in ground where the water table reaches the bottom of the soakaway at any time of the year. 2 metres deep. We do this for two reasons. Drainage; Concrete; Steel; Retaining Walls; Structural Analysis; Roads & Pavementsother permeable surfaces with a soakaway that introduces all the water at a single point can lead to ground softening, foundation failure, and slope instability. 3 = 2. To avoid water collecting in the soak away leaking into and damaging the foundations, The soakaway should be situated at least 5m away from any building. We've just pruned back a large rosebush to find that the guttering downpipe has rusted away and separated from the section that goes underground. The rule of thumb is 1 cubic metre of soakaway for 30 sqm of roof. For example, if your soakaway is to be placed at the bottom of the garden and your garden is 30m long, the pipe will be 300mm deeper when it gets to the soakaway. Failed pavements are expensive to repair. The soak pit , consisting basically of a simple pit (generally approximately 1 m 3 ), should be between 1. As an aid, mark a stick 300mm from one end, place in the hole and fill up to the mark. Collapsed or displaced pipes in the soakaway. 3m deep and 1m x 1m. Always cover the soakaway crates with a geotextile membrane to maintain the performance of the system. You must have 7 metres of distance between your home and your septic tank. Step 2: If you do, apply online (you can do this if you have started or even finished the work on your property) Step 3: Book an inspection. We always start our patios 3 or 4 inches (100mm) away from the house. The outflow from the reed bed is then clean water that can discharged safely to an existing water course or to a soakaway or land drain. On 2022-01-31 by Tyler . Skip to content TastingBritain. RedHerring. 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. Fill the hole with approximately 150mm of water and allow it to seep away completely; no need to measure the time. 5m = 19. If you cannot slope the slabs away you may wish to consider acho type drainage channels against the property which may be connected. If possible try to position it approx 10 metres away. Hello House, We digged septic tank and Soakaway for 6 flats. 2 – How Far Away From the House Must it be Located? The regulations state that a rainwater soakaway must be located at least five metres from the wall of a building and. 13 Aug 2013. 5 metres from the boundary. A new Planning Permission has been passed which includes a soakaway for onsite surface water disposal. Fill the test hole with water to a depth of at least 300mm (12in). f - is the soil infiltration rate, in m/s, determined in accordance with clause 3. This can be caused by natural movements in the soil or say by driving a heavy car etc over the drainage field. 42, the M5-15 min can be found as follows: M5-15 min rainfall = 20 mm x Z1 (for 15 min duration) Read Z1 from Table 1 in the column for the required rainfall duration, D, (eg 15 minutes), and. Building, planning and design. See more of Soakaway crates on Facebook. 1. 4. The wastewater generated in the house from the kitchen and bathrooms has to be disposed of. e. Knowing where it should go on your own will allow you to know where it should be placed and how far. Place the tank. A soakaway is a buried drainage feature which seeks to manage surface water on the site and infiltrate into the ground, rather than discharging to an offsite location such as a watercourse or sewer. This publication is available in html and also in. Lift the cover and pour water down the the downspout hole. Country. The trenches for the soakaway should be between 300mm and 900mm wide with a distance of 2m between trenches. septic tank distance from house How far should a septic tank be from a house? How far should a soakaway be from a building? How far should the soakaway be from a well,. soakaway. #4. The main provisions of these regulations are: The Sewage Treatment Plant must be sited more than 7m from habitable property. 0 xfor diameter up to 3. The minimum size a soakaway should be constructed to is 30m. 5 metres. If the soak away is dug into solid clay, this will only take a limited amount of water as it will fill quickly in heavy rain. How big should I make the soak away. Calculate: A sp (area of base of soak pit) = 5. And tumble your outlet into it. Dear All, I am trying to resolve an issue with an existing soakway in the front garden at my residential property in the UK. Soakaway size. 1,000-gallon septic tanks are 8 feet 2 inches long, 5 feet 8 inches wide, and 5 feet 1 inch deep. ISBN. All soakaways must be sited at least 5m from any building or road and preferably at least 2. The void space in the fill provides the water sotrage capacity while the water infiltrates through the trench walls into the surrounding soils. Figure 1 – Connection of condensate discharge pipe to internal soil and vent stack. It must not be constructed nearby a. BRE Digest 365 is one of the most regularly used design guidance reports issued by the Building Research Establishment. You should recieve some clips or ties with the crates. This closes the pores and fissures at the excavation interface leading to. 2. Edge of soakaway 5m from any boundary. 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. 2 = 40m2. This enables aerobic contact between the effluent and the drainage stone and soil particles. Fill your pit; Fill the bottom of your pit with about 15cm of compacted sand or shingle. down 4 feet in one afternoon but was still not free of the clay. You may also have a problem with the small. Septic tanks or fields need to be placed at least five feet away from your home. In 2020 guy said he thought there might be an issue with the soakaway as he thought he heard water draining back in. . We can also deal with your insurance company directly on your behalf at no extra cost to you. These are available from us. The total garden depth is only about 6. This should also include 15 metres of distances from other habitable buildings if the water is going to a drainage field. This publication is available in html and also in. The great house search continues, we've found one we like which is a bit in the middle of nowhere. Soak away distance away from house and the correct size please and how many is needed. Septic tanks alone are now not acceptable and are not the most efficient way of handling waste, New house builders today are installing a domestic sewerage treatment plant’. and copyrighted in 1996, to compensate for clay and impervious soils and high water table. On my Victorian house - so a bit older - no soakaways. Ensure you connect the gutter securely to the eave of the roof. Soakaways can be blocked by rainwater, which can quickly turn into an expensive issue. Hi all, I was recently looking into purchasing a small building plot , problem is it has a neighbours soakaway right on the rear boundary and is virtually impossible to get the 7m distance and still build anything worthwhile, it' s a real shame as is a very nice plot. flameport said: You cannot build a soakaway next to your house. Whats the minimum distance you would want to place your drain field from your septic tank 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. Does anyone have any experience of creating a miracle soakaway. state water board authority laboratory for the physico- Fraction of soak away contribution Where: 151 Ibiang Ebri, Ekeng Emmanuel, and Bejor. It is important to check with the relevant. How deep should a soak away be? How deep should a soakaway be? The Perforated pipe should be laid at a minimum depth of 200mm and a maximum depth of 700mm. orSt. 5 1. 8m lower than the ground floor level. 5m from any boundaries. There will also be rules about the permitted turning radius in a curved driveway. Log In. At Nicholls we work with the client/drainage consultant to design the most appropriate deep bore soakaway to provide a solution where a traditional soakaway or conventional drainage is impractical or too costly. They are: Soakaway should not be within 2 metres of a neighbouring boundary. The main services for the house will be approx 20m away and I will be running mains water and power over that distance to the annexe. Hi, a soak away should be a minimum of 5 metres away from your property and if your drive is sloping towards the house you need a minimum of a ACO drain against the house but depending on the length and steepness of your drive you may need two. A drain field is made of solid perforated pipes (NOT 'Flexicoil' land drainage pipe!), a minimum of 2 metres apart and a maximum of 700mm. The discharge point shall be more than 10m from habitable property. filled the hole at 1820, and by 2217 it had possibly (possibly) moved 2cm, but I suspect thats more hope than anything. Septic tank and soakaway: An in-house full flush-toilet connected via pipe and plumbing fixtures to an underground watertight settling chamber (the ‘digester’) with a liquids outlet to a subsoil drainage/soakaway system. What is the maximum distance a leach field can be from tank discharge. If the pipe starts in a trench 300mm deep the bottom of the pipe will be 600mm below the ground when it gets to the soakaway. The two septic tank Got Filled and the Soakaway. So all rain water from one half of the house plus the extension does not go into the sewer system. As luck would have it, the site of the soakaway is. ukA simple, trapped gully will be installed on the edge of the patio nearest the soakaway, and a pipe will link the gully (which could be a linear channel , if preferred) to the cells that are about to be installed. This is measured below the pipe invert so you' generally dig 1. Whats the minimum distance you would want to place your drain field from your septic tankA 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. French Drains – How They Work. The fitter assured us that it was all done correctly and that it has been fitted into a soakaway. can be extracted at least 15m away from a soakaway if the soil is fine. i have looked in the valiant manual and it says distance for external pipe should be minimal to prevent freezing then it goes on to say should be a max of 3 metre with a 45mm fall per. 8 Feb 2014. roughly 2m x 1m, x 1. Soak Pit Construction / How to build a soakaway. The Sewage Treatment Plant must be sited more than 7m from habitable property. These are used to hook up the crates to prevent movement while the side-filling materials are added. 4m (190 litres/0. road construction (see note 17) frl. 5 metres is just from the building in any direction, it doestn have to be away from the sides. Does this mean I can site my soakaway much closer to the boundary (2-3 m) than Building Regs require. Septic tank is approx. Log In. A soakaway must be 2. required even a normal soakaway located 5m from a building. The pre-settled sewage from the septic tank is released to the underground chamber, where it infiltrates into the neighboring soils. Septic Absorption field Septic drain field, leachfield, soakaway beds, absorption beds: 100 ft. The downpipe runs vertically from the fascia for. kingandy2nd. Percolation test procedure for surface water soakaways. 500-gallon septic tanks can support a 2-bedroom home and are 79 inches long, 45 inches wide, and 56 inches deep. The key elements of the Part H rules are. A soakaway system can be used on its own to control waste water, or it can be combined with a septic tank in cases where there isn’t a suitable area for a. Additionally, each downspout should drain a maximum of 35 feet of gutter. VP x Population x 0. You can buy USB borescope camera’s dead cheap off Amazon, in the region of £15, just plug into your phone or PC with USB. Martin’s House, Waterloo Road, Dublin 4 Tel: +353 1 660 2511 Fax +353 1 668 0009. Limestone or fissured rock allows pathogens to travel much further. 5 3. To calculate the actual length of trench, divide the result above by the width of the trench required eg for a 600mm/ 0. The condensate pipework may terminate above or below ground level. They should also be sufficiently far away enough from any other drainage fields, mounds or soakaways so that the soakage capacity of the ground is not exceeded. If you have a soakaway attached to a septic tank or sewage treatment plant, your soakaway will discharge the treated wastewater which has come from your property. A t = Area of the drainage field in m 2. 5 metres away from surface water soakaway. It was invented back in the 1800s by Henry Flagg French The president of Massachusetts (agricultural college). For example, 50m2 roof area requires a rubble filled soakaway of (50m 2 x(50/3000))/0. The Soakaway Design Guide (July 2000) D4 f18. Groups. It's 18,000 for 2 users + (6,800 x 3) 20,400 for 3 additional users equalling 38,400 total capacity. It may well have had a separate rainwater drain, either to a soakaway or a nearby pond or ditch. 2. The fitter assured us that it was all done correctly and that it has been fitted into a soakaway. For this, dig a hole at least 1. SD 8-2-307 Rev 9 Surface Water Land Drain and Soakaway Details: Rev 9 12/Apr/2022 01:11 PM SD 8-2-308 Rev 8 Foul Sewer – Pipe Bedding Details – Flexible Pipes : Rev 8. 10-meter-distance (34-foot) from a stream or ditch It should be 50 meters (164 feet) away. The 5m rule applies to distance away from buildings not particularly boundaries. For example, 50m2 roof area requires a rubble filled soakaway of (50m 2 x(50/3000))/0. Submitted soakaway design details shall include infiltration test results. 5m 13. A percolation test can be conducted by taking the following steps: Dig a 300mm square hole to a depth of 300mm below the proposed invert level of the drainage field. 3. See moreSoakaways should be built a distance of at least 5. Dig a trench that runs from your rainwater pipes on the side of your house to the soakaway pit. Figure 1 – Connection of condensate discharge pipe to internal soil and vent stack. No need to compact the bottom. But, to get there, the surface water has to first leave your guttering. Damage to the dip pipes or baffle within a septic tank can cause a soakaway to become blocked. 50m from water abstraction points, boreholes, springs. The soakaway rings shall be supported on a concrete base not less than 200mm thick with a diameter of not less than the external diameter of the rings The concrete used shall be Class ST4. The main objective of these study was to investigate the effect of sitting bore (drinking water source), and soakaway system within the same area in close proximity (distance) to each other on the. It does not have to be beautiful, to scale, nor expensive. Contrary to what you believe, digging a big hole next to your house will cause it to fill up with water and the area will be permanently wet. A Soakaway is a pit or trench where surface water is allowed to collect and slowly soak into the surrounding soil or rock. hi guys!!!!! ive noticed water in my cellar it seems level with area where the soakaway leaves the house. A soakaway is an efficient and low-environmental impact way of dealing with either foul or excess surface water in your drainage system. ) Section 6. 2. 0 3. This is to avoid any issue or possible interaction with either your property or. This enables aerobic contact between the effluent and the drainage stone and soil particles. 5 May 2020. Regression analysis for the bacteriological quality of borehole water in relation to soak away distance: Summary output REGRESSION STATISTICS Multiple R 0. . Rainwater soakaways are usually made from gravel or stone or even plastic soakaway crates. The Building. Small bore solid-free sewer: An in-house toilet discharging to a septic tank (or on-site digester) with liquids disposal via Excavate a hole 300mm square to the proposed depth of the pit and trench. If above ground the condensate pipe must be protected with a waterproof lagging. Build a soakaway under my driveway, which is behind the back garden so could be 5m away. Pre-settled effluent from a water-based collection and storage/treatment or a (semi-) centralised treatment technology is discharged to the underground chamber from which it infiltrates into the. as it would to dig 5 meters away to create a soak away. Within 5m of a building or road, 2. Little monitoring of soakaway performance is done, but this could be most informative about changes in soil infiltration rate and in warning of soakaway blockage in the long term. 15m from any building, and sufficiently distant from any other soakaway, including roof water. A surface drain layed against the house plumbed into a new soakaway (1 cubic meter per 25 square meter of paved area) providing the existing paving is flat and running towards house should solve the problem. Your sewage treatment plant has to be 5 metres away from trees, fences and hedges, 10 metres away from a watercourse or stream, and 50 metres away from any lake or foreshore. T H E E V A L U A T IO N O F A S O A K A W A Y 'S C A P A C IT Y 26 6. Fill the hole with water and allow it to seep away overnight. 5m-1. Question: OSSF Clearance Distance for Septic in Texas . The repairs can then be authorised with your insurance company prior to works being completed. Full drainage design suite (50% Discount) including 7 spreadsheets; Trench Soakaways consist of long narrow trenches filled with gravel or single size stone. If the pipe starts in a trench 300mm deep the bottom of the pipe will be 600mm below the ground when it gets to the soakaway. 9 Oct 2019. Step 3 – Prepare the base. it is more often than not related to the soak-away system rather than the septic tank itself. 1895) with a small front yard. 5 metres is just from the building in any direction, it doestn have to be away from the sides. This should also include 15 metres of distances from other habitable buildings if the water is going to a drainage field. Condensate Soakaway Code: SOAK1GR 500mm minimum 300mm Hole width 200mm CODE: SOAK1GR Hole and SOAK1GR filled with 10mm Limestone Chippings Holes in SOAK1GR to face away from wall Hole depth 400mm Ground Level Maximum Possible Gradient Side Connection Top Connection 2 300mm 1 3 Ø110mm Ø100mm 5 4. All Civil Engineering MCQ; Structural Analysis MCQ; Hydrology MCQ; Remote. The pipe end entering the soakaway must be at a depth of 25mm minimum and the end of the pipe cut at 45° Septic Tank – distance from house in England & Wales. Standard soakaway system. . We recently moved into an old terraced house (c. Soakaway Distance From Rivers, Streams And Ditches Visit for more information Soakaway Distance From Rivers, Streams And Ditches. This is measured below the pipe invert so you' generally dig 1. Make sure it’s adequate for the size of your house and grounds, otherwise it will be overwhelmed. The trenches must be filled 50mm above perforated pipe and covered with a membrane and then filled in with soil. This would work best in areas where. despite what the building regs say' would be much use as a defence in a court case if your neighbour's house started making it's way towards your. Wrap your soakaway crate in the geotextile membrane, making sure the membrane covers any outward-facing surfaces, including the pipe entry point. The soak pit is to be a hole filled with rocks. I'll have to do some digging (no pun intended) and b) the Inspector allowed me to reduce the distance of mine from the boundary to about 2 meters. A 1,000-gallon tank is sufficient for a three-bedroom house. Comparison of SuDS to traditional soakaways Well-designed shallow SuDS that are at or close to the ground surface are quite different from traditional soakaway drainage. Mary Long-Dhonau explains: “ [The size of. This can be caused by natural movements in the soil or say by driving a heavy car etc over the drainage field. A rainwater soakaway is a drainage trench that is dug from surrounding soil in order to manage surface water through a septic tank or and alternative drainage route. For a house with well-draining soils and 750 square feet of rooftop to be managed, the soakage trench should be 15 feet long. Remember, any excavation deeper than 1. distance required for septic tanks and soakways 600x600 c. 2. 8m 3 . 3. Get in touch to book a Free Quote or just to talk through your project design. Help What is a Soakaway? A soakaway is simply a hole dug into the ground, filled with rubble and coarse stone which allows surface water to percolate back into the earth. DISTANCE TO SEPTIC TANK gives details of making a septic location sketch. Dig a hole 300mm square to a depth 300mm below the proposed invert level of the incoming pipe. This enables aerobic contact between the effluent and the drainage stone and soil particles. #1. Septic Soakaway Installation, Leach Field or Drainage Field Installation UK. Distance to House: Part H within the building regulations suggest that Soakaways will need to be more than 5 meters away from the property. Design Considerations of Soak Pit 1. Ironsides New Member. 18 Aug 2015. shorter distance is safe then it can be used. This leads to aerobic digestion and effectively treats the effluent. The water samples for the relationship between the bacteriological quality of obtained from the five locations, were taken to the Cross River borehole water and its relative distance to soakaway point. Within 6 months. Your patio can be laid directly against your outside walls providing it is 150mm below existing Damp proof course. Sokoine Building, P. A surface drain layed against the house plumbed into a new soakaway (1 cubic meter per 25 square meter of paved area) providing the existing paving is flat and running towards house should solve the problem. The principles are the same whether you are building a small domestic garden soakaway or driveway soakaway, or if you are building a large surface water drainage soakaway to. And one central Soakaway and we channeled the bathroom and kitchen water to the Soakaway. They are more suitable for houses with larger front gardens as they require space and need to be located a suitable distance from buildings. . IIRC, the standard mentions "about 5m" from a building. Blocked Soakaway ·A quick one. 1 For disposal of non-domestic wastewater, the setback distance shall be determined by a hydrogeological study in accordance with Section 17(b) of Chapter 3, but shall not be less than the distances shown in Table 4. The main provisions of these regulations are: The Sewage Treatment Plant must be sited more than 7m from habitable property. Same distances apply to the soakaway. Table 2 Soakaway Area Requirements at. Always cover the soakaway crates with a geotextile membrane to maintain the performance of the system. A septic tank soakaway is a series of relatively shallow (a minimum of 200mm. Just like changing the oil in your car, maintaining your septic system extends its life for a small cost compared to the expense of installing a new system, which typically runs $15,000 or more. This is to prevent any negative effects from the infiltrating water on the house foundations. below ground, buried in trenches filled with. S - is the required storage in m 3. if, for the soakaway location, r on Figure 1 = 0. Background Groundwater drawn from shallow tubewells in Bangladesh is often polluted by nearby pit latrines, which are commonly used toilets in rural and sub-urban areas of the country. Then, add the heavy-duty landscaping fabric across the stone. To calculate the size/volume of a rubble filled soakaway, the same calculation can be used but the result divided by 0. As the effluent seeps into the ground, it is purified by the soil, which uses bacteria to digest the pollutants and remove excess nitrogen and. It’s also recommended that your septic tank be located within 30 metres of an access point to allow for your tank to be easily emptied when required. 8m from ground level. In unsuitable areas a mound soakaway should be used so that there is at least 2m of soil between the bottom of the soakaways and the water table. p = Number of persons served by the tank. Contrary to what you believe, digging a big hole next to your house will cause it to fill up with water and the area will be permanently wet. 6. So Is the site totally undev. Calculate your soakaway size. Soakaway and Septic tanks with very long distance kilometers to the discharge points can also affects how much it will cost to clean and evacuate the Septic Tank contents. You must drain into a soakaway unless it is impracticable to do so ie the existing ground conditions will not allow a soakaway to work or you do not have the space to build one (they need to be min 5m away from any buildings). 4 m 3. If it is disposed of in open it not only creates unhygienic.