Econ Holding Properties (EHP), represented by Ms Nothemba Mlonzi, appointed Bosch Projects as civil and structural engineers for the construction of a R47.5 million building in Lusikisiki, Eastern Cape.
The initial scope of the project involved construction of 2 651m2 of gross building area, for offices and retail letting. Most of the building is intended for the Department of Social Development and the remaining space will be for retail outlets. Additional space, mostly on the lower basement level, has since been allocated to the SA Social Security Agency.
Challenges of this project included difficult site conditions, as a result of existing municipal services and environmental circumstances. Saturated and poor ground conditions were exposed during excavation of the platform for the basement of the building.
These problematic conditions required Dynamic Probe Super Heavy (DPSH) tests being undertaken, which established that the bedrock depth varied between 10 m and 12 m.
To ensure stability of the structure, an end bearing driven ductile iron pipe system was adapted for the building foundation. The structural design encompasses reinforced concrete beams and column frames with voidcon permanent formwork system floor slabs. This system reduces concrete volume and foundation loading.
Taking into account the inadequate municipal water pressure on site, a pressed steel reservoir and booster pump have been provided for firefighting and potable water supply