Create preliminary beam, column and slab sizing prompts for discussion with a registered structural engineer. This is not a final design, approval or code-compliance check.
Structural design is a critical phase of any building project, whether it's a residential bungalow in Lagos, a commercial complex in Nairobi, or a warehouse in Johannesburg. Getting the beam sizes, column dimensions, and slab thickness right ensures safety while controlling material costs — often the largest expense in African construction projects.
The calculator applies a simplified legacy formula set to user-entered assumptions for early screening only. It does not establish which standard applies, verify load combinations or prove strength or serviceability. A registered structural engineer must select current local requirements and complete the design.
With concrete and steel prices rising across Africa, engineers need to optimise designs to minimise waste. An oversized beam wastes concrete and steel; an undersized one is dangerous. This tool gives you preliminary sizes that you can refine with detailed analysis. For columns, the steel percentage directly impacts cost — using the minimum required reinforcement saves money without compromising safety.
Foundation design depends heavily on local soil conditions. Lagos clay is notoriously soft, requiring wider footings or pile foundations. Nairobi's volcanic soils generally have better bearing capacity. The footing calculator includes common African soil types so you can size pad footings appropriately. Always conduct a proper geotechnical investigation before finalising foundation design.
No. This tool provides preliminary sizing for simple structural elements. A complete structural design requires professional analysis considering load combinations, wind loads, seismic considerations (for East Africa), and detailed reinforcement detailing. Always engage a registered structural engineer for your building project.
Ask the approving authority and registered structural engineer to identify the current rules for the site, occupancy and structural system. The calculator does not choose or certify a code.
The project engineer must specify the concrete grade from the design, exposure, materials and current local requirements. Do not select it from a generic web estimate.
A registered structural engineer must establish permanent, imposed, wind, seismic and other relevant actions and their combinations. Values entered here are user assumptions for preliminary screening.