AEC & Built Environment Insights
Actionable code updates, project tips and product news—served weekly
NCC Stair Requirements: Risers, Goings, Handrails and Balustrades (2025 Guide)
Every NCC 2025 stair dimension for a house and a commercial building, with the clause behind each figure: riser 115 to 190 mm, going 240 to 355 mm, 2R + G between 550 and 700, 865 mm handrails, 1 m barriers and the 125 mm sphere test. Two diagrams and a free calculator.
NCC 2022 Amendment 2: Every Change, and What to Re-check
NCC 2022 Amendment 2 took effect on 29 July 2025. It references AS 1428.1:2021 and rewrites D3D22, D4D4 and Volume Three E1D2. Every change, what did not change, and what to re-check.