Addressing structural deterioration at height

The Sentech telecommunications tower in Brixton, Johannesburg, required urgent concrete rehabilitation to address structural deterioration at extreme heights. Axsys Projects undertook the challenge of repairing and restoring this high-profile landmark, balancing technical precision with strict safety protocols and coordination with active telecommunications operations.

The project integrated specialised access systems, modern concrete repair techniques, and heritage-sensitive solutions to maintain both functionality and architectural integrity.

Key Deliverables

Installation of specialised external access systems for high-altitude operations

Concrete demolition and spalling removal

Structural repairs using proprietary grout systems

Protective coatings for long-term durability

Replacement of fenestration and handrail systems

Porthole closures and weatherproofing

Rotunda roof waterproofing and renovation

Select interior design and finishes in alignment with heritage requirements

Technical Expertise

The project required advanced capabilities in:

Working safely at extreme heights with specialised scaffolding and rope access systems

Applying modern concrete rehabilitation materials and techniques

Conducting structural assessments and implementing repair methodologies

Environmental and weather-related risk management

Coordinating with active telecommunications operations

Safety Excellence

Safety remained central throughout the project. Work was continuously monitored, with strict protocols guiding every phase. Scheduling was adjusted based on weather conditions to reduce exposure to risk. For elevated tasks, we deployed specialist rope access and scaffolding systems designed for stability and control. Detailed safety plans were developed to manage operations around live infrastructure, ensuring that all activities were carried out with precision and care.

Heritage and Aesthetic Considerations

White Pearl Group Tech balanced performance with preservation:

Maintaining the tower's iconic architectural features

Coordinating with heritage and planning authorities

Ensuring high-quality finishes suitable for a landmark

Restoring original design intent while improving structural performance

Project Benefits

Enhanced structural integrity for long-term operations

Minimised operational disruption during rehabilitation

Extended lifespan of critical telecommunications infrastructure

Compliance with heritage and environmental regulations

Project Summary

Project Classification: Specialised Rehabilitation

Contract Type: Concrete Restoration and Refurbishment

Outcome

The Sentech tower benefits from reinforced structure, continuous operations during repairs, restored heritage features, enhanced safety measures, and improved environmental compliance, ensuring durability and long-term performance.

Sentech SOC Limited Concrete Rehabilitation