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Structural Rehabilitation

All structures deteriorate over time. With the ever rising cost of new construction, alternative means are being sought to extend the lifespan of structures. Through our ongoing research, we have developed innovative technologies and materials that greatly improve the possibilities for rehabilitating structures and reducing, in some cases even reversing, the process of deterioration.

At HHO we have developed specialist expertise, which involves disciplines far exceeding conventional structural engineering, to advise on and implement corrective strategies to suit our clients’ specific needs. Our specialists are held in high esteem, and academic institutions often call on their expertise during collaborative and research projects.

Structural rehabilitation is highly specialised, and we offer a comprehensive range of services from initial assessments to design and construction supervision. We also offer specialised design services for new structures exposed to extreme conditions.

Our services cover initial assessment, investigation and monitoring as well as designing effective rehabilitation works that meet the specific needs of our clients.

  • Structural steel bridge and building rehabilitation
  • Bridge widenings
  • Structural strengthening
  • Structural inspections performed by SANRAL-accredited inspectors

Notable projects include the recently completed Ghandi Square building refurbishment and the rehabilitation of the Red Bridge near Bonnievale. We have won awards for the widening of the Storms River Bridge, and the widening of Sir Lowry’s Viaduct.

Red Bridge, Robertson, South Africa

HHO designed the rehabilitation works for the 100 year old ‘Red Bridge’ near Robertson. The bridge is a 5 span, single lane steel lattice girder bridge over the Breede River that required several members to be strengthened or replaced.

Olifants River Bridge, Mpumalanga, South Africa

The Olifants River Bridge was widened and strengthened as part of an upgrade to the N11. FRP strips were glued to the underside of existing beams and external pre-stressing was applied to the pier heads. The finished bridge is capable of handling current loading requirements and a widened road cross section.

Selby Bus Depot, Johannesburg, South Africa

HHO undertook the structural assessment, rehabilitation and implementation of the conversion of this 60 year old bus depot, to serve as the Rea Vaya Ph1C BRT Depot to cater for 252 buses. Also included was the repurposing of a trucking operations site to serve as the BRT Operations Centre.