oa Civil Engineering = Siviele Ingenieurswese - Identification of voids on the N1 North using ground penetrating radar

Volume 18, Issue 3
  • ISSN : 1021-2000



Part of the Gauteng Freeway Improvement Project (GFI P) work package D2 consists of widening sections of the N1-21 Freeway. This article deals with the section on the western side of the northbound carriageway between the Atterbury and Lynnwood Road offramps in Pretoria. In order to accommodate the widening of the freeway, excavation of slopes bordering the western side of the freeway was required.

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