ETD Collection

Permanent URI for this collectionhttps://wiredspace.wits.ac.za/handle/10539/104


Please note: Digitised content is made available at the best possible quality range, taking into consideration file size and the condition of the original item. These restrictions may sometimes affect the quality of the final published item. For queries regarding content of ETD collection please contact IR specialists by email : IR specialists or Tel : 011 717 4652 / 1954

Follow the link below for important information about Electronic Theses and Dissertations (ETD)

Library Guide about ETD

Browse

Filters

1997 - 199912010 - 20181

Settings

Has files: YesSubject: search.filters.subject.Stormwater infiltration

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    The potential of green roofs in sustainable stormwater engineering in the eThekwini CBD
    (2018) Sucheran, Arisha
    Cities are facing serious problems relating to stormwater such as water scarcity, degraded waterways, increased flooding, and degradation of the quality of water. In response to these impacts, a number of sustainable urban drainage systems (SuDS) are being developed and implemented in many cities. In particular, green roofs boast an array of advantages, including their ability to delay and reduce stormwater runoff, and improve stormwater runoff quality. This study compares the water quality and quantity of green roofs with that of conventional roofs in the eThekwini region, and compiles a model using Personal Computer Storm Water Management Model (PCSWMM) to investigate the effect that incorporating the best performing green roof would have on stormwater flow rates and volumes for the region. In terms of water quality, the data analysis revealed significant variations in pollutant concentrations between the green roofs and the conventional roof. Metals such as arsenic, iron, and aluminium were found in high concentrations in green roof runoff. In terms of stormwater runoff quantity, the green roof systems proved to significantly reduce stormwater runoff flow rates and volumes. The highest retention rates were achieved for low intensity rainfall events, whilst the lowest was achieved for high intensity rainfall events. The implementation of green roofs within the eThekwini Central Business District (CBD) proved to be advantageous in reducing peak stormwater flow rates.
  • No Thumbnail Available
    Item
    Detention storage for the control of urban storm water runoff, with specific reference to the Sunninghill monitored catchment
    (1997) Brooker, Christopher John
    Detention storage IS a well tested, and generally accepted, method of attenuating flood hydrographs, but relatively littlo data is available from the monitoring of full scale instc'lations An onstrearn pond was constructed at Sunninqhill Park and details of 15 inflow and outflow hydro [Abbreviated Abstract. Open document to view full version]