n Civil Engineering = Siviele Ingenieurswese - Rehabilitation of Mouille point sea wall : phase 1 : projects : technical excellence category

Volume 23, Issue 10
  • ISSN : 1021-2000



Initially built between 1926 and 1940, the Mouille Point / Sea Point sea wall and promenade have developed into one of Cape Town's most popular public amenities. This section of wall, built between the low- and high-water marks, consisted of a 3.4 m high mass concrete wall founded on massive concrete footings at approximately 1.8 m. The wall was faced with granite blocks and capped by a heavy reinforced concrete cope with concrete bollards and open rails. Pounded by frequent storms, breaches began appearing in the sea wall where granite facing had collapsed and water penetration through the wall began causing significant erosion of fill under the paving. Emergency repairs undertaken to seal the breaches left the wall with an unattractive 'patchy' look and were themselves subject to frequent failures. In 2011 the City of Cape Town undertook a long-term study of the sea wall and promenade and in 2012 a contract was let to undertake the full structural rehabilitation of the sea wall, including major upgrading of the promenade and adjacent amenities. The part covered in this project is the section of sea wall from Three Anchor Bay to the Green Point lighthouse, a length of approximately 650 metres forming Phase 1 of the rehabilitation.

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