Die foto wys waar Francios Fourie sy toespraak hou oor die gebruik van hemelwater en die hergebruik daarvan.
Kliek hier om die volledige presentasie te sien.
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The photo shows Francois Fourie giving a talk on Rainwater Harvesting. One of his cases was the earthship in Orania.
Click here to download the presentation. Copyright UFS.
Extract out of the presentation:
Rainwater management
. Bloemfontein has a surface area of approximately 120 km2 and an average annual rainfall of approximately 550 mm.
. Total rainfall per annum: 66 million m3.
. This volume exceeds the current municipal water demand, even after accounting for evaporation losses and groundwater recharge.
. Most of this water is lost through the storm water drains, eventually ending up in the Modder River.
Groete/Greeting
Ludwig, Retha & Arno Everson
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