
Consulting Engineers South Africa (CESA)
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Consulting Engineers South Africa (CESA)
@The_CESA
Consulting Engineers South Africa is a voluntary association of Consulting Engineering firms with a member base across the country totaling over 540 companies.








"Initially planned for 22 months, the N1 Sinkhole Repair project was completed in just 17 months, ahead of schedule. This allowed the N1 to reopen before the 2024 festive season, meeting @SANRAL_za's critical deadline," Savannah Canto, from Zutari, shares. #WorldEngineeringDay



"Alongside the repair of the sinkhole, a comprehensive compaction grouting regime was undertaken along a 300m strip of the southbound carriageway to ensure effective treatment of the roadway," - Savannah Canto, Geotechnical Engineer at Zutari. #WorldEngineeringDay #WebinarSeries



“The solution involved partial reconstruction of the pavement layers, comprising 105 mm and 175 mm of Bitumen Treated Base," - Annemie Swart, from Zutari, during our webinar discussing the N1 Sinkhole Repair Project for @SANRAL_za. #WorldEngineeringDay



“While the original scope focused on surface-level repairs, site conditions required a shift to partial reconstruction to adequately address the impact of grout-induced heave," Annemie Swart, from Zutari, during the N1 Sinkhole Repair Project for SANRAL webinar.

“Rehabilitation in the secondary pavement area was initially limited to crack repairs and sealing. However, grout-induced heave required a revised pavement design & a more robust intervention," - Annemie Swart -Zutari unpacks the N1 Sinkhole project for SANRAL during our webinar.

Our next speaker: Annemie Swart, Geometric Design Engineer, Zutari, explains the pavement scope on the N1 Sinkhole Repair Project: "The roadworks incl. reconstructing about 97m of the primary pavement area (see orange section), which had been damaged by the sinkhole." #Roads



Zutari, leveraging extensive dolomite expertise, was tasked by SANRAL to design and supervise the rehabilitation of the N1 Sinkhole project. #WorldEngineeringDay #Roads



Savannah Canto, from Zutari:"Geotechnical investigations identified poor subsurface conditions & cavity-prone areas for the N1 Sinkhole Repair Project. Due to safety constraints, no investigations could be carried out near the sinkhole, with work limited to the surrounding area."


