About Us

HGK Consulting CC was established in March 2006 by Erhard Kruger, who at the time had twenty-six years experience in the field of structural engineering. After graduation he started his career in 1980 as a bursary holder at the Public Works Department, where he was employed for two years.

In February 1982 he moved to one of the large consulting engineering companies in South Africa where he was employed for twenty-four years. After a brief period of about six months in the transportation division he started working in the structures division, where he gained valuable experience in structural design through exposure to a variety of challenging projects.About HGK engineering

He has extensive experience in the structural design of water-retaining structures and has attended a 4 day course in the design of water-retaining structures at the British Cement Association in the United Kingdom. He has been responsible for the design of numerous reservoirs, various structures for water purification and sewerage works, underground pump stations and water towers, of which the 6,5 Mℓ Grand Central Water Tower in Midrand, one of the largest of its kind in the world, is a highlight. He also has experience in the rehabilitation of water-retaining structures and was involved in the successful rehabilitation of the Middelburg 10 Mℓ, Queenswood 18 Mℓ and Waterval 45 Mℓ reservoirs.

He served on both the Reference Group and Working Group on the Implementation of a South African National Standard for Water-Retaining Structures, SANS10100-3. He was specifically tasked with the crack width section of the Standard.

He has designed various multi-storey buildings of which the 18-storey office block in the Momentum Centre was the most challenging, as well as a number of educational buildings like lecture halls, libraries, laboratories and office blocks for higher educational institutions. He also has experience in the design of structural steelwork, and designed the structural steel for the Es’kia Mphahlele Registration Building for UNISA in Pretoria.

He has been involved in the design of bridges, as well as culverts for public roads and for heavy mining vehicles at Sishen Mine in the Northern Cape and Moatize Coal Mine in Mozambique.

He did the structural design of the South, South-west and North-west pavilions at the Loftus Versfeld Rugby Stadium in Pretoria as well as the design for the upgrading of the structural steel light masts for the 1995 Rugby World Cup at the same stadium. He was one of the four structural design engineers for the Nelson Mandela Bay 2010 Multipurpose Stadium in Port Elizabeth for the 2010 Soccer World Cup, where he was responsible for the design of Levels 2 to 5 floor slabs, ramps and brickwork details, as well as liaison with the structural engineer responsible for the preliminary design. He was responsible for a concrete rehabilitation project at Loftus Versfeld Rugby Stadium in Pretoria.

He has experience in engineering management and acted as principal agent for renovations and additions to the 4-storey office building of the Compensation Commissioner in Pretoria. He acted as independent engineer to manage the pre-shutdown phase of a furnace re-build at Nampak Wiegand Glass factory. He was requested by the client to manage the final 6 months of construction of the new UNISA Main Entrance Building due to previous slow construction progress and information flow, which including the implementation of processes to manage information flow, monitoring progress and conducting progress meetings.

He has been involved in numerous structural investigations, and was an expert witness in a court case following the collapse of a marquee tent at the yearly Oktoberfest at the German School in Pretoria in which a person was paralysed, as well as in a case in which a person was injured during the collapse of a sliding gate.

He has been responsible for various articles and papers listed below, including two papers and one article in the recognised British magazine, The Structural Engineer.
Erhard Kruger is registered as a professional engineer in South Africa and a chartered engineer in the United Kingdom.


  • BEng (Hons), Structural Engineering, University of Pretoria 1980
  • B(Eng) Civil, University of Pretoria 1977


  • Kruger, Erhard and Mostert, Marelize. Saving a doomed reservoir – Rehabilitation of Waterval Reservoir, Roodepoort. The Structural Engineer. 2 June 2010.
  • Kruger, HG and Atkinson, HRC. Improved crack width calculation method to BS 8007 for combined flexure and direct tension. The Structural Engineer. 17 May 2005.
  • Kruger, HG. Crack width calculation to BS 8007 for combined flexure and direct tension. The Structural Engineer. 17 September 2002.
  • Kruger, HG and Kok, SP. Rehabilitation of Centurion Reservoir. Urban Management. Jan/Feb 2000.
  • Kruger, HG. Grand Central Water tower. FIP notes. 1995/4.