EPC · Energy Infrastructure · Civil Construction · South Africa 010 300 0857 · Bryanston, Johannesburg
Civil & structural works

Earthworks, concrete and steel for infrastructure that has to carry real loads.

Semilson’s published civil capability spans large-scale earthworks and site preparation through structural concrete and steel assembly.

Bulk earthworksExcavation, cut/fill and site preparation before structural works begin.
Earthworks & excavations

Start with the platform.

Large-scale earthworks and excavation are a published core service — essential for substations and broader infrastructure where levels, access and ground preparation influence everything that follows.

Site preparation

Clearing, excavation and formation work aligned to construction needs.

Bulk movement

Earthmoving and grading for project platforms and infrastructure zones.

Interface control

Coordinate earthworks with foundations, drainage and access sequencing.

Steel & concrete works

Structure before equipment.

Semilson lists structural steel assembly and concrete construction as a core service, supporting substations and broader civil infrastructure packages.

Reinforced concrete

Foundations, slabs, plinths and structural elements aligned to project drawings and specifications.

Structural steel

Assembly and installation of structural steel supporting equipment and infrastructure requirements.

Structural executionConcrete + steel packages built around infrastructure loading and interfaces.
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