Frequently Asked Questions

For most construction projects in South Africa — whether commercial, industrial, or residential — a structural engineer is required by law and by the municipality's building plan approval process. Any project involving foundations, load-bearing structures, slabs, steel frames, or significant alterations to an existing structure will typically require structural engineering input and a Professional Engineer (Pr Eng) sign-off before building plans are approved. If you are unsure whether your project requires structural engineering, contact us and we'll give you a straightforward answer.

A Professional Engineer (Pr Eng) is a registered engineer accredited by the Engineering Council of South Africa (ECSA). Pr Eng registration is the highest professional designation in the engineering field in South Africa and is required by law for the sign-off of structural engineering designs and certificates of compliance. When Edge Engineering says a Pr Eng is dedicated to every project, it means your structural designs are reviewed, signed off, and legally certified by a registered professional — not delegated to a graduate or technician without the appropriate accreditation. This protects you, your project, and the end-users of the building.

Professional Indemnity (PI) Insurance protects the client in the event that an error or omission in the engineering design causes financial loss. Edge Engineering carries R25,000,000 in PI Insurance — which is a meaningful level of cover for multi-million rand commercial and industrial developments. Before appointing any engineering firm, it is worth confirming their PI Insurance coverage. Insufficient PI cover can leave you exposed if a design defect causes costly delays or structural remediation on your project.

BBBEE (Broad-Based Black Economic Empowerment) Level 2 is one of the highest B-BBEE ratings an engineering firm can hold. For property developers, corporates, and project managers working on funded developments, government-adjacent projects, or within organisations that have B-BBEE procurement targets, appointing a Level 2 supplier like Edge Engineering contributes directly to your organisation's B-BBEE scorecard. In competitive procurement environments, the ability to appoint a technically qualified, Pr Eng-accredited engineering firm that is also BBBEE Level 2 is a significant advantage.

Post tension slab design is a specialist structural engineering technique used to prestress concrete slabs after casting — by tensioning high-strength steel tendons within the slab. It is commonly used in commercial and mixed-use developments where longer spans are required, floor-to-floor heights are constrained, or where reducing overall slab thickness delivers meaningful cost savings. Post tension design requires advanced structural analysis software and specialist engineering knowledge. Edge Engineering provides post tension slab design in-house, verified using Prokon and Tekla Structural Designer.

A raft foundation is a reinforced concrete slab that spans the full footprint of a building and distributes the structural loads across a large area of ground. Raft foundations are typically used on sites with poor soil bearing capacity, variable ground conditions, or where differential settlement is a risk. They are common in residential and commercial developments across Gauteng, particularly in areas with dolomite or expansive soils. Edge Engineering designs raft foundations as part of our standard structural engineering service.

Our office is based in Bedfordview, Gauteng, and we provide structural and civil engineering services across Johannesburg, Ekurhuleni, Sandton, Pretoria, and the wider Gauteng region. We also operate nationally across South Africa and have completed projects in six countries across South Africa and sub-Saharan Africa, including Zimbabwe, Malawi, Uganda, Lesotho, and the DRC. If your project is outside Gauteng, contact us and we'll confirm our capacity to assist.

Call us on 082 785 1414, email info@edgeengineering.co.za, or complete the contact form on our website. To provide an accurate fee proposal, it helps to share your project type (commercial, residential, industrial), location, approximate size or scope, and your programme or deadline. We aim to respond to all enquiries within one business day and will provide a clear, project-specific fee proposal — no vague estimates.

We use Revit for 3D structural modelling and documentation, Prokon for structural calculations and analysis, Tekla Structural Designer for concrete and steel frame design, Robot Structural Analysis for advanced structural modelling, Advance Steel for structural steel detailing and shop drawings, AutoCAD for 2D drawing production, and Civil 3D for civil engineering design. This software stack reflects current industry best practice and ensures our designs are accurate, well-documented, and compatible with modern construction and BIM workflows.

Yes — and this is one of the most common ways we are appointed. Architects typically engage us as the structural engineer of record on their projects, providing structural input during the design phase, reviewing architectural drawings for structural viability, and producing coordinated structural documentation for building plan submission and construction. We work straightforwardly and professionally with architectural practices of all sizes.

Yes. Edge Engineering has completed projects across six countries in South Africa and sub-Saharan Africa, including Zimbabwe, Malawi, Uganda, Lesotho, and the Democratic Republic of Congo. Our team has direct experience navigating the regulatory, logistical, and site-condition challenges that come with delivering engineering services across multiple African jurisdictions. If you have a project outside South Africa, we are equipped to assist.

We serve commercial, industrial, retail, office, hotel, hospitality, educational, mixed-use, and residential sectors. Our project portfolio includes multi-million rand commercial developments, industrial warehouses, retail centres, hotel and hospitality projects, residential estates, and individual house structures across South Africa and sub-Saharan Africa.