This improved version, from which its name is derived, was designed to find a solution to, or at least reduce, this problem. Ventilated improved pit latrine practical action technical. Double alternating pits are sometimes utilized referred to as double vip toilets, especially when the pits are shallow. Manual removal of the humuslike material in the pits, which is at least two. Pdf on mar 14, 2018, babatunde femi bakare and others published scientific support for the design and operation of ventilated improved pit latrines and the efficacy of pit latrine additives. Field investigation methodology, tag technical note no. While specific technologies such as the ventilated improved pit latrine vip rejuvenated access to improved sanitation locally and globally, the use of social marketing strategies, such as the participatory health and hygiene education phhe, provided a strong impetus to. When the pit becomes full the toilet can be moved to an adjacent new pit, and the old pit covered over. Furthermore, it was established that all members of a household were more likely to use a latrine if it was an improved ventilated latrine aor2. A pit latrine is a simple and inexpensive toilet, minimally defined as a hole pit in the ground.
Vip latrines effectively control odour and flies while still allowing users to clean themselves with hard materials such as newspaper and leaves which may not suitable for. Shared sanitation versus individual household latrines. So building and using a latrine any type at all is the most important step to take. This work is licensed under a creative commons attribution 4. A vip latrine differs from a traditional pit latrine in that it has a tall vertical vent pipe which has a fly screen fitted at its top. Dec 25, 2012 furthermore, it was established that all members of a household were more likely to use a latrine if it was an improved ventilated latrine aor2. A ventilated improved pit latrine the ventilated improved pit v. The vip ventilated improved pit latrine system is an excellent toilet system, as the vip vent. Ventilated improved pit vip latrines loughborough university. It essentially involves providing the inside of the latrine with a vertical ventilation pipe, referred to as a. May 01, 20 ventilated improved pit latrine vip waterless pit latrine ventilated by a pipe that extends out of the pit to above the latrine roof. P latrine offers improved sanitation by eliminating flies and smell. Conclusion findings suggest adoption of strategies to improve the wellbeing of households and deploying those who had acquired improved ventilated latrines as resource.
Schematic of a ventilated improved pit vip toilet diagram reprinted from tilley et al. Five households used ventilated improved latrines whilst the remaining eight per cent made use of their neighbours latrine. Ventilated improved pit vip latrines moi ot 3 introduction the addition of a vent pipe to a simple pit latrine is one way of reducing the nuisance of flies in the cubicle if the cubicle is kept clean and dark. Single ventilated improved pit vip sswm find tools. The ventilated improved pit latrine vip is a pit latrine with a black pipe vent pipe fitted to the pit and a screen flyscreen at the top outlet of the pipe. It comprises a stable foundation and flooring, a dark and sealed pit, and a ventilated pipe extending at least half a meter above the roof of the latrine, fitted with a fly screen. Factors affecting the utilisation of improved ventilated. Further details of countryspecific deslgns currently for botswana, tanzania and zimbabwe are given in other technical notes in this series.
They do not have smells when the wind blows over the vent pipe all the bad smeils are removed. Ventilated improved pit vip latrines resources susana. Excreta, along with anal cleansing materials water or solids are deposited into a pit. Single ventilated improved pit vip sswm find tools for. More sophisticated pit latrines may include a floor plate, or ventilation to reduce odor and fly and mosquito breeding called ventilated improved pit latrine or vip latrine. Tell a friend about us, add a link to this page, or visit the webmasters page for free fun content. Design and construction of household ventilated improved. Information on improved latrine options 11 part 3 what do we mean by latrine.
However, the most effective system to prevent odours is the socalled vip ventilated improved pit latrine. It is an improvement over the single pit because continuous airflow through the ventilation pipe vents odours and acts as a trap for flies as they escape towards the light. Pit toilets latrines global water pathogen project. A straight vertical ventilation pipe is present in a ventilated improved pit vip toilet reed, 2014a that extends 0. The introduction of a ventilation pipe in the pit toilet, as shown in figure 3, is a variation of the pit toilet concept. Ventilated improved pit vip and reeds odourless earth closet roec latrines these are both improved types of pit latrine which aim to remove smells and flies from the latrine using a vent pipe. They use similar technology, the main difference being that the pit of the roec is wholly offset from the slab and connected to it by achute. This type of latrine is called a ventilated improved pit vip latrine. See fact sheet a8 ventilated improved pit latrines g service life. A ventilated improved pit latrine vip is similar to a single pit latrine with addition of a vertical vent pipe. There is a great demand for improved sanitation in many. Pit latrine treatments, blair toilets and vip, ventilated. Ventilated improved pit vip toilet systems installed in south africa are constructed according to a.
Problems associated with the use of pit latrines in. The ventilated improved pit latrine is an improvement on standard pit latrines that eliminates flies and odour. Pdf scientific support for the design and operation of. The preferred sanitation technology in swaziland is the ventilated improved pit latrine vip. One modification to the basic pit latrine is the ventilated improved pit latrine, or vip latrine. This study was conducted to identify the gaps that exist between ventilated improved pit vip latrine construction practices in cape coast, ghana, and conventional technical guidelines, and to assess how any noncompliance with technical guidelines influences the users perception of odour and fly nuisances. Pdf redesigning the ventilated improved pit latrine for use in built.
An entertaining video guide to the construction of enhanced latrines in mozambique that improve sanitation and help to prevent cholera. Design and construction of household ventilated improved pit. It essentially involves providing the inside of the latrine with a vertical ventilation pipe, referred to as a vent, the top of which is fitted with a finemesh insect screen. Use a motorized tanker with latrine with soil, and build latrine using a spade and. Ventilated improved pit latrine which is an improved sanitary household solution for human excreta. Improved traditional pit latrine with handwashing facility 6908553053. A vip latrine was developed in zimbabwe in the 1970s as an odorless, fly free toilet suitable for use in both rural and lowdensity.
Own ership of property, poverty and theft in the area significantly influenced the type and structural condition of the latrine. Preparation of standard engineering drawings, specifications and guidelines for ventilated improved pit latrines in south africa. Use a motorized tanker with latrine with soil, and build latrine using a spade and mapet with a manpowered a vacuum pump. Lining the pit prevents it from collapsing and provides support to the superstructure. The ventilated improved pit latrine was the commonest technology used by 47 % of households with private latrines. The distinctive feature that gives the vip latrine its name is the vent pipe installed into the pit, which is used to exhaust the foul odour from the pit and control flies figure 20. Any other flush or pourflush latrine, an open pit latrine, bucket latrine, a hanging latrine, or open defecation is unimproved and not scored toward the mdg target. Also available casa house plans casita plans special thanks to hector rubio for his service and help in creating these plans. The residents ranked safety and privacy as the most important factors that. Vip latrines are an improvement to overcome the disadvantages of simple pit latrines, e. Nov 30, 2012 the preferred sanitation technology in swaziland is the ventilated improved pit latrine vip. Ventilated improved pit latrine how is ventilated improved. A8 dry selfventilated improved pit latrines vip, simple or twin pit. This has now been improved, with even greater success, as peter morgan and ephraim chimbunde report.
Ventilated improved pit vip latrines the addition of a vent pipe to a simple pit latrine is one way of reducing the nuisance of flies in the cubicle if the cubicle is kept clean and dark. A8 dry selfventilated improved pit latrines vip, simple. A vip latrine was developed in zimbabwe in the 1970s as an odorless, fly free toilet suitable for use in. Many military units, if intended for extended use, place basic shelters and seating over the pits. Vent pipe design guidelines, tag technical note no. Empty using a latrine by hand mechanical means tanker backfill the top of the dig out the contents of the use a simple device e.
The air inlet will be more effective if it is facing the prevailing wind. The ventilated improved pit latrine or vip latrine differs from a standard improved latrine due to the addition of a vent pipe figure 5. Ventilated improved pit vip toilet systems installed in south africa are constructed according to a wide variety of designs and with many different types of materials, with a corresponding. This improved version, from which its name is derived. The vip latrine is an improvement over the simple dry pit latrine. This technical note sets out preliminary guidelines for the design and construction of vent pipes for ventilated improved pit vip latrines. It seeks to clarify the current state of ventilated improved pit latrine design, which often includes a bewildering set of design options such as single or twin pits, emptiable or nonemptiable, lined or unlined and raised above ground level or unraised. Ventilated improved pit latrine simon farmer practical. How to build a ventilated improved pit latrine howtopedia. Is long and more often than not 15 to 20 years, and sometimes up to 25 to 30 years.
Significantly, public and other shared facilitiesthose used by two or more householdsare excluded from the definition of improved sanitation regardless of. The addition of a vent pipe to a simple pit latrine is one way of reducing the nuisance of flies in the cubicle if the cubicle is kept clean and dark. P latrine offers improved sanitation by eliminating flies and smell, through air circulation. The design of ventilated improved pit latrines pseau. Two techniques controlling lmproved ventilated pit.
Ventilated improved pit latrine vip waterless pit latrine ventilated by a pipe that extends out of the pit to above the latrine roof. The vip latrine was developed to overcome the problems of odour and fly breeding commonly found in unvented pit latrines. The main disadvantage of latrines is often their bad smell and the breeding of flies. The pit latrine is a natural, safe, and clean toilet system, with pit contents decomposing naturally into compost over time. Pdf redesigning the ventilated improved pit latrine for. Pdf redesigning the ventilated improved pit latrine for use. Latrine design and construction 5 sample latrine design and construction schedule session day 1 day 2 day 3 day 4 day 5 9. The biological activator is packed in 1kg packs primarily for the pit latrine blair toilets and vip, ventilated improved pit toilet and septicconservancy tank market. There are a number of designs to suit different situations but they all work in much the.
Apr 17, 2014 any other flush or pourflush latrine, an open pit latrine, bucket latrine, a hanging latrine, or open defecation is unimproved and not scored toward the mdg target. The addition of a chimney draws air currents into the structure and through squat hole. Latrine design and construction making culturallyappropriate latrines. Zimbabwean brick designs this paper describes the most recent developments in the design of ventilated improved pit vip latrines in zimbabwe. Through the aeration in vips, odour and fly nuisances are reduced. This paper describes the most recent developments in the design of ventilated improved pit vip latrines in zimbabwe. There is strong evidence that access to improved sanitation can. December 1, 2004 downloads pdf available on line at.
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