Mass Gravity Retaining Walls
MPONWANE - KZN - South Africa
DOKOLWANE DAM COMMUNITY DEVELOPMENT
DOKOLWANE DAM COMMUNITY DEVELOPMENT_0
The boreholes in the mountainous areas surrounding the Pongola Poort dam yielded little or no water. This meant that women and children would have to walk distances to collect water from streams which often dried up during the winter months. Most young children did not attend school, as their main task was to collect water for their family’s needs which hindered their development.
The Dokolwane community, together with CSIR, constructed a dam in the Mponwane region. The dam, constructed with gabions, had a 6m base width, 4m crest height, and 22m crest length. The northern flank was placed behind a rock outcrop and the southern flank dug into the hillside. A concrete cut-off wall was built upstream of the wall and the upstream face was covered with a “flexible” ferro-cement facing to reduce seepage under and throughout the structure.