The project for the Ingula hydroelectric power station, near the city of Ladysmith in South Africa entails constructing two shafts for 22 million cubic metres of water.
For the roof of the two shafts, the customer chose the NPS® Basic beams with stainless steel plate combined with prestressed slabs. The choice of stainless steel was dictated to prevent corrosion issues of the metal parts exposed to the circulation system water flow. 3 beams were laid at a height of 120 metres with a clearance of 20 metres for each shaft.
The self-supporting structures that support the 1.5-metre high deck cast is the winning feature of the NPS® beams.