oa Civil Engineering = Siviele Ingenieurswese - Die breë agtergrond en oorsig van die Du Toitskloof-tonnelprojek
The construction of the Huguenot Tunnel between Paarl and Worcester on National Route N1 is the largest single project yet undertaken by the National Transport Commission. A number of smaller, but equally Interesting, contracts like the construction of a pilot tunnel, the use of ground freezing methods for excavation in saturated soft material and the building of the imposing Hugo's River Viaduct prepared the scene for the main tunnel contract. In the main contract a system of selected subcontracts was very successfully applied for specialized work, with the electro-mechanical equipping of the tunnel and its control centre being the most important. As a result of successful negotiations with the main contractor, the original agreement was extended to include the excavation of the future double carriageway tunnel.
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