Kenya National Construction Authority (NCA) and the Kenya Bureau of Standards (KEBS) have been progressively aligning local structural design standards with international best practices. In 2025, several updates came into effect that structural and civil engineers operating in Kenya need to be aware of.
Seismic Loading Requirements
Kenya sits within a seismically active zone, particularly in the Rift Valley region. Updated guidance has refined the seismic hazard zoning across the country, with some areas previously considered low-risk now reclassified into higher categories.
For structural engineers, this means reviewing designs for multi-storey structures in affected zones to ensure lateral load-resisting systems — shear walls, braced frames, moment frames — are appropriately sized for the revised seismic inputs.
Reinforced Concrete Cover Requirements
Updated guidance on minimum concrete cover to reinforcement has been issued, with particular attention to coastal and lakeside environments where chloride-induced corrosion is accelerated. Engineers specifying structures in Mombasa, Kisumu, and other humid environments should confirm their detailing meets the revised minimums.
What This Means for Current Projects
For projects still in design, the path is straightforward: design to the updated standards from the outset. For projects already under construction or nearing completion, the changes generally do not require retrospective modification — but it is worth confirming with your structural engineer that the original design basis remains compliant.
At Abba & Wandu Engineers, we track regulatory updates as a standing part of our quality management process. All new projects are designed to current standards.
