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The Gantt chart is a specialised bar chart used to provide a graphical overview and schedule of all tasks to indicate the work elements and dependencies of project. It is a chart with rectangular bars. The length of each bar is proportional to the time value necessary for each task on the work breakdown structure. The final product illustrates the schedule of a project.
Geotextiles are fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain.
German Development Bank
German Development Bank Synonyms: KfW
Gestión de Agua y Saneamiento Sostenible en América Latina
The page STEP “Gestión de Agua y Saneamiento Sostenible en América Latina” aims to present a sample of the SSWM-Toolbox to the Spanish-speaking audience, especially in Latin America. With a short selection of factsheets, the STEP “GASS en AL” shows key information of the different sections of the SSWM-Toolbox in English, such as the SSWM Concept, Planning and Process Tools, Hardware and Software Implementation Tools and Background Issues. The factsheets of this STEP are not just translated into Spanish, but also enriched with further information, case studies, awareness raising and training material developed in the Latin American context. As a first phase, this STEP has been developed in collaboration with seecon international gmbh and SARAR Transformación SC. However, the SSWM team expects that this first STEP in Spanish will encourage other organisations to collaborate in bringing this valuable tool for capacity building and information exchange to Latin America, supporting practitioners during the planning and implementation of initiatives in water and sanitation in this region. Synonyms: GASS en AL, STEP Latin America, STEP Latin America (GASS en AL)
Giardia lives inside the intestines of infected humans or other animals. Individuals become infected through ingesting or coming into contact with contaminated food, soil, or water. The Giardiaparasite originates from contaminated items and surfaces that have been tainted by the faeces of an infected animal.
The Global Water Partnership was founded in 1996 by the World Bank, the United Nations Development Programme (UNDP) and the Swedish International Development Cooperation Agency to foster Integrated Water Resources Management (IWRM), and to ensure the coordinated development and management of water, land, and related resources by maximising economic and social welfare without compromising the sustainability of vital environmental systems. Its mission is to support the sustainable development and management of water resources at all levels. The GWP provides a platform for multi-stakeholder dialogue at global, regional, national and local levels to promote integrated approaches towards more sustainable water resources development, management and use. Synonyms: GWP
Granulometry is the measurement of the size distribution in a collection of grains.
Gravel pack is graded granular material placed in a thin zone around the screens in order to increase the effective hydraulic diameter of the borehole and to help inhibit the movement of sediments into the borehole. Gravel pack material should be chosen to retain most of the unconsolidated formation material, and screen openings are then selected to retain about 90% of the gravel pack. Gravel packs are 100- 200 mm thick. Synonyms: Sand pack
Gravitational water is held in large soil pores and rapidly drains out under the action of gravity within a day or so after rain. Plants can only make use of gravitational water for a few days after rain.
Grease traps can be used to separate grease from the rest of the wastewater, but they are only effective if the accumulated grease is removed at regular intervals. Generally, grease traps are fitted at garages, restaurants and other commercial premises where large quantities of oil or grease are discharged in the wastewater.
The precipitation on land that does not run off or recharge the groundwater but is stored in the soil or temporarily stays on top of the soil or vegetation. Eventually, this part of precipitation evaporates or transpires through plants. Green water can be made productive for crop growth (although not all green water can be taken up by crops, because there will always be evaporation from the soil and because not all periods of the year or areas are suitable for crop growth).
Gases in an atmosphere that absorb and emit radiation within the thermal infrared range. This process is the fundamental cause of the green-house effect, which is today discussed in respect to global warming – but which is also fundamental to guarantee temperatures on earth that make life possible in the first place.
The term greywater is used to designate all the wastewater produced in a household, except toilet wastewater. Greywater is generated in showers and baths, when doing laundry, dishwashing, wash basins and kitchen sinks. Even though it does not contain excreta, it can contain pathogens. Synonyms: Sullage
A grinder pump is a submersible pump incorporating a grinding mechanism designed to reduce sewage articulate and pump the resulting slurry from a residential/commercial structure to a collection system.
A chamber designed to remove sand, gravel, or other heavy solids that have subsiding velocities or specific gravities substantially greater than those of the organic solids in waste water, and consequently settle on the ground of the chamber. The wastewater spends a relatively short period in the grit chamber (in the order of minutes). The sedimented sand and grit is usually land filled.
Groundwater is water that is naturally present beneath the surface of the ground. In some instances groundwater may be found several centimetres below the surface, or it may be up to a hundred metres below the surface. Groundwater is generally quite clean and can be used for drinking water; for this reason care must be taken not to contaminate groundwater with sewage. Synonyms: Groundwater sources
Groundwater dams store water under the ground in sufficient quantities for livestock and minor irrigation as well as domestic use. Groundwater dams can be divided into two types: sand dams and subsurface dams. This technology is used in arid and semi-arid regions, where water shortage is a problem during dry periods. Synonyms: Ground Water Dam, Subsurface Dam, Underground Dam
A gully is a landform created by running water, eroding sharply into soil, typically on a hillside.
Gully erosion results from water moving in rills, which concentrate to form larger channels. When rill erosion can no longer be repaired by merely tilling or discing, it is defined as gully erosion. The advanced stage of gully erosionleads to formation of ravines near the river systems. It is however noted that deep gullies are formed normally in lands having relatively thick soil depth.
A check dam (or also called gully plug) is a small, temporary or permanent dam constructed across a drainage ditch, swale, or channel to lower the speed of concentrated flows for a certain design range of storm events. Synonyms: Check Dam
Hand-pump specially designed for sludge (e.g. for the emptying of pit latrines, septic tanks, aqua privies, anaerobic baffled reactors etc.). Manual sludge pumps are a relatively new inventions and have shown promise as being low-cost, effective solutions for sludge emptying where, because of access, safety or economics, other sludge emptying techniques are not possible. The pump works on the same concept as a water pump: the handle is pumped, the liquid (sludge) rises up through the bottom of the pump and is forced out of a tap (sludge spout). Synonyms: Poo pump