Piling is required whenever weak soils have little capacity to resist an existing load or a change in existing load. Piling involves the construction of structural elements to transfer loads down to stronger underlying soils or rock.

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Apex has particular specialisation in the design and optimisation of the following piling techniques:

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• CFA Piles

• Driven Precast Piles

• Bored Piles

• Helical Piles

Soil nailing uses grouted steel nails to reinforce in situ soils and create a gravity retaining wall for permanent or temporary excavation support.

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Soil Nails are typically used to stabilise slopes, support excavations and for the repair of existing retaining walls.

Contiguous pile walls consist of piles arranged in a line typically with a 150mm gap between the piles.

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A secant pile wall consists of overlapping (secant) piles to form structural or cutoff walls and achieve the required water tightness.

King post walls are a cost-effective system of temporary or permanent retention using beams and precast concrete or wooden panels.

Apex has the experience and expertise to offer full time or temporary site supervision during geotechnical construction works. We can perform quality assurance checks, supervision over performance testing along with technical and practical advice throughout the project life cycle.

Sonic Integrity Testing (SIT) is a widely used measurement method to check the integrity of concrete foundation piles. This Low Strain Impact Test is a quick non-destructive method to reduce the risk upon failure of concrete cast-in-situ or prefab piles.

Ground anchors transfer tensile loads and consist of an anchor head, a free length and a bond length. Anchors can offer an advantage for basements and large excavations by minimising horizontal deflections.

Apex has the experience and capabilities to offer a wide range of retaining wall solutions which include:

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• Dry-Stack Retaining Walls

• Gravity Retaining Walls

• Reinforced Soil Systems

• Gabion Baskets

Apex has extensive experience in undertaking site investigations for residential and commercial developments within South Africa.

We provide a wide range of site investigation services. From full site investigation to laboratory testing of soil. Our tests and comprehensive report on the results can help you choose the most suitable and appropriate method of construction for your project.