BSR/ HSE – Approved Document A: Call for evidence

The HSE says: ‘Most structural design undertaken in England demonstrates compliance with the Building Regulations requirements A1 and A2 by following the standards referenced within section 1 of AD A, the vast majority of which are Eurocodes. AD A has not been substantially reviewed recently, and we are planning on using this opportunity to undertake a wider review of the document, beyond the changes which are required due to the March 2028 Eurocode revision.’

Questions in the Call for Evidence - which ends on 21^st April 2025 – are on the following topics :

• Section 1: Codes, standards and references for all building types
• Section 2: Sizes of structural elements for certain residential buildings and other small buildings of traditional construction
• Section 2B: Sizes of certain timber members in floors and roofs for dwellings. Areas at risk from house longhorn beetle
• Section 2C: Thickness of walls in certain small buildings
• Section 2D: Proportions for masonry chimneys above the roof surface
• Section 2E: Foundations of plain concrete
• Section 3: Wall Cladding
• Section 4: Roof covering
• Modern Methods of Construction
• Design Checking
• Competence of Structural Engineers