archive-org.com » ORG » C » CSBE.ORG

Total: 693

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • Page 3 » CSBE
    As he is becoming more of an established presence in Amman s incredibly booming architectural scene as his growing office is becoming an important work destination for newly graduating Jordanian architects and as more of his buildings are being constructed in the city the new architectural set of images he introduces in his work is becoming increasingly familiar in Amman It will become apparent over the next few years if these new vocabularies will provide a new architectural prototype that will establish roots within the city s architectural landscape or whether his buildings will remain unique compositions that provide strong contrasts with the building stock of Amman Project data Design and supervision team Architects Khalid Nahhas with Nisreen alFar Daad Musa Raad Sawalha and Reem Suyyagh Symbiosis Designs Structural engineer Marwan Ghanem Mechanical engineer Issa Hamdan Electrical engineer Kaled Srahneh Interior designer Fadi Farajallah General contractor Fusion Developments Photographer Osman Akuz Location Dabuq Amman Area 987 65 square meters Date of completion May 2005 Cost Withheld at owners request Khalid Nahhas is a senior architect and associate director of Symbiosis Designs He received a bachelor s degree in Geographic and Economic Planning from the University of Victoria in 1985 and a second bachelor s degree in Architecture from the University of British Columbia in 1989 He has been practicing architecture since 1989 beginning his professional career in Vancouver at Spaceworks Architects In 1991 he co founded Symbiosis Designs He moved his practice to Amman in 1997 and has been practicing there since then His work includes several commercial and residential buildings as well as interior design projects He was a member of the Design Committee of the Jordanian Pavilion in the Expo 2005 in Aichi Japan He is a member of the Board of Trustees of the National Children Museum

    Original URL path: http://www.csbe.org/publications-and-resources/exploring-the-edge/grafting-the-ammani-landscape/page-120/ (2016-02-13)
    Open archived version from archive


  • Page 2 » CSBE
    simple filter may be required for example a screen mesh in the surge or storage tank This filter may need periodic cleaning 7 Graywater should not be applied directly to plants if it is hot If hot laundry wash water is to be used means to store the graywater temporarily in order for it to cool should be provided 8 Graywater may be stored if desired However this may give rise to unpleasant odors The storage tank therefore should be covered to prevent the escape of odors to areas where they would cause annoyance but also should be vented appropriately to allow odors to escape to the atmosphere away from areas frequented by people for example to the roof It should be possible to completely drain storage tanks every now and then to avoid pooling of graywater and possible contaminant buildup If no filter is used the outlet pipe should be located higher than the base of the tank to allow solid material to settle 9 All pipes containing graywater should have a slight gradient to prevent graywater from lying in the pipes and should be designed to avoid traps where graywater can lie 10 Means of diverting the graywater to the sewer system or septic tank should be provided in case of accidental release of harmful substances bleach nappy rinse etc into the graywater system This will prevent contamination of the graywater irrigation system 11 If a potable water supply is to be included in order to dilute or supplement the graywater supply there should be no risk of cross contamination between the potable water and the graywater If a potable input pipe is included in a graywater storage tank a minimum air gap of 300mm should be maintained between the potable water pipe and the maximum level of the graywater A non return valve should be provided in the potable water pipe as secondary protection to prevent accidental return flow into the potable water supply The potable water supply could be governed by a level sensitive valve to cut off the flow of potable water when it is not required An overflow pipe also should be provided Use of Graywater 12 Graywater is best suited to the irrigation of plants trees and shrubs Ideally the area to be irrigated should be at a lower level than the graywater outputs so that the entire system can operate by gravity and the need for a pump is avoided 13 Drip irrigation hoses with small holes may clog due to the presence of solid material in the graywater or following the growth of algae in the hose Therefore holes of at least 3mm diameter should be provided 14 For untreated graywater the possibility of human contact should be avoided Graywater therefore should not be used for the irrigation of lawns unless they are for ornamental purposes only and are not used by children or household animals or are irrigated by sub surface irrigation systems which reduce the risk of human contact

    Original URL path: http://www.csbe.org/publications-and-resources/material-on-graywater-use/preliminary-guidelines-for-using-graywater-for-irrigation/page-109/ (2016-02-13)
    Open archived version from archive

  • Page 5 » CSBE
    US Page 5 A Graywater Reuse Study in Southern Arizona and the Water Conservation Demonstration Garden in San Diego California An Essay on a presentation made by Val Little to Diwan al Mimar on May 31 2001 Prepared by Majd Musa with Mohammad al Asad 2002 Continued The Water Conservation Demonstration Garden The second part of Val Little s presentation dealt with the Water Conservation Demonstration Garden which is situated within the campus of Cuyamaca College in the eastern part of San Diego California 12 Little stated that this garden provides effective examples on how the public in San Diego can respond to San Diego s drought climate and conserve water through detailed real illustrations of the seven principles of xeriscape 13 The garden provides a learning resource center with landscape planting educational exhibits and a theatre One enters the garden through a sliding entry gate Just next to the gate is the garden s information kiosk that is built in the shape of a large watering can figure 3 This is where visitors obtain entry tickets and brochures about the garden The garden s entry gate leads to a large outdoor concrete paved lobby where some paving stones that honor the contributors to the garden are placed Also a map and a few interpretive signs that outline the different components of the garden are placed close to the entrance area Passing through the outdoor lobby one is presented with one of the garden s educational exhibits the California Water Story Here an interpretive panel shows the sources of San Diego County s potable water and explains the history and importance of water supply to the region A large diameter section of a water supply pipe with water dropping into a small pond which is placed near the panel serves

    Original URL path: http://www.csbe.org/publications-and-resources/material-on-graywater-use/graywater-reuse-and-water-conservation-case-studies-in-the-us/page-76/ (2016-02-13)
    Open archived version from archive

  • Page 8 » CSBE
    and it is expected that we would get similar results when testing chlorinated water on plants in Amman However it was recommended to experiment with the application of graywater to some species of plants in Amman to investigate how they would perform over a five year period for example One also can dual plumb the graywater coming out of washing machines by diverting out the graywater that contains chlorine bleach or intense soaps to the sewer system while directing the graywater with lighter detergents and the rinse water to the graywater system In this context it was added that one should be aware of the soil type to which the graywater is applied In the case of Tucson an experiment was carried out where graywater was applied to a turf area through the use of a subsurface drip irrigation system and a similar turf area was drip irrigated with potable water The greenness of the graywater irrigated turf was very evenly green while the greenness was just along the drip irrigation lines in the potable water irrigated turf area The experiment showed that the presence of soap in the graywater helps in dispersing the water through the soil However Little noted that this might not necessarily be the case in Amman There are differences between soils in Tucson and Amman The soil in Tucson is sandy in character while Amman generally has clay to clay loamy soils which have a higher water holding capacity Consequently the soil in Tucson probably takes graywater easier than that in Amman Slow dripping probably would be needed when applying graywater to the soil in Amman to avoid surface ponding problems resulting from the clay to clay loamy soil compositions In order to get an accurate idea as to how soils in Amman would respond

    Original URL path: http://www.csbe.org/publications-and-resources/material-on-graywater-use/graywater-reuse-and-water-conservation-case-studies-in-the-us/page-79/ (2016-02-13)
    Open archived version from archive

  • Page 10 » CSBE
    other disease causing bacteria such as those that cause typhoid dysentery and cholera viruses and protozoans As the direct monitoring of disease causing bacteria is difficult Fecal coliforms and Fecal streptococci are considered an indicator of disease bacteria in the water i e they are used as indicators of possible sewage contamination Escherichia coli is the only coliform that is specific to fecal material from humans and other warm blooded animals It is a common inhabitant of the intestine of the healthy humans and warm blooded animals However some strains of Escherichia coli are disease causing Escherichia coli is considered a significant indicator of health risk caused by sewage contaminated water 8 The results of this study showed that the higher level of Fecal coliform bacteria was present in the graywater coming from the kitchen sink Thus the kitchen sink represents a significant contamination source This is caused by the large amount of organic matter it contains which provides nutrient sources for organisms already present in the water Also washing meat and poultry may introduce organisms into the graywater collected from the kitchen sink Thus the study recommended that the graywater coming from the kitchen sink be excluded from the graywater used for irrigation purposes and directed to the sewage system 9 The results of the study showed that the lowest levels of Fecal coliform bacteria were found in the graywater coming exclusively from washing machines 10 Rainwater harvesting is an effective water conservation tool that provides free water independently from the municipal supply For additional information on rainwater harvesting see the documentation of Richard Brittain s presentation Casa del Agua and Desert House Two Residential Demonstration Research Projects on Water and Energy Efficiency which is located in the publications on Water Conserving Landscapes on this web site 11 For additional information on the new regulations for residential graywater reuse that the Arizona Department of Environmental Quality has put in place see Val Little Graywater Guidelines Tucson Water Conservation Alliance of Southern Arizona 2002 This document also is available online through the Water CASA web site 12 The concept for this garden was adopted in 1991 by the East County Water Conservation Committee It was designed by Jon Powell of the landscape architecture firm Deneen Powell Atelier Inc and was opened to the public in 1999 Cuyamaca College was selected as a location for the garden because of its strong horticulture department that had originally created the San Diego Xeriscape Council as the educational vehicle for water conservation in the landscape in the San Diego area For additional information on the Water Conservation Demonstration Garden see the garden s web site at http www otaywater gov garden 13 The seven principles of xeriscape include the incorporation of water wise planning and design low water use plants limited grass areas water harvesting techniques efficient irrigation systems mulch and proper maintenance For additional information on the principles of xeriscape see the essay The Seven Principles of Xeriscape and the documentation of Margaret

    Original URL path: http://www.csbe.org/publications-and-resources/material-on-graywater-use/graywater-reuse-and-water-conservation-case-studies-in-the-us/page-81/ (2016-02-13)
    Open archived version from archive



  •