GMH Tswelelo, GMH Consulting Engineers and GMH Consultores LDA, is a dedicated road and stormwater design engineering consultancy. The company, established in 1987 as GM Hattingh & Partners, has a 35-year history, an employee complement of more than 25  people and an extended office network in South Africa and Mozambique. GMH serves both the public and private sectors within the fields of traffic engineering, all aspects of road and bridge design, structural design pertaining to roads and earthworks, geotechnical work, project and programme management and the whole spectrum of municipal services design.