oa Civil Engineering = Siviele Ingenieurswese - Rehabilitation of a 75-year-old Free State workhorse

Volume 6, Issue 6
  • ISSN : 1021-2000



Innovative techniques were used to ensure the continued viability of a vital regional link to schools, shops and farming activities land River Bridge No 86 south of Welkom in the Free State was constructed in 1921. The mass concrete (1 :2:4) abutments and the central pier were founded on large concrete (1 :3:6) caissons (8,6 m by 3,35 m) at a depth of about 5 m below river bed level onto a boulder bed, which prohibited further sinking.

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