Saeed Azarshab

Approved Document A: Structure

Statutory guidance · England-focused reference · Editorial source review:

Part A concerns the structural safety of a building, including foundations, walls, floors and roofs. Use it to frame the structural questions a competent designer needs to answer. A standard detail, a visual inspection or a BIM model does not establish that an altered building has adequate load paths or stability.

Independent explanation, not an official approval or project-specific legal/design advice.

When to use this guide

  • Removing or altering a wall, floor, roof or supporting element
  • Planning an extension, loft conversion or change affecting structural loads
  • Checking foundations or the stability of an existing building before work

What to check

Use these prompts with the responsible project team. Ticking a box does not certify compliance.

You can tick these prompts while reviewing the project.

Download checklist (TXT)

Keep these records

  • Survey and ground information, design assumptions and calculations
  • Current structural drawings and temporary-support information
  • Inspection records and documented design changes

Common mistakes

  • Assuming a wall is non-loadbearing from its appearance or position alone.
  • Copying a beam or foundation detail from a different property.

When to get specialist help

Get competent structural advice before an alteration whose load path, stability or temporary support is uncertain. Do not use this guide to size a structural member.

Scope and edition

Landing publication date 1 September 2013; the landing page does not label a new 2026 edition. Confirm the applicable document and any project transition before design. Guidance is not a substitute for a structural design for unusual buildings. Coordinate load paths and structural changes with competent design input.

Structural loadings, stability and elements including foundations, walls, floors, roofs and chimneys.

Use the official source to check the current text, amendments not yet incorporated, commencement and project-specific transition. A published future edition is not automatically the rule applying to your work.

Official sources

  • GOV.UK — Approved Document AOfficial England guidance; check the applicable volume, edition and transition.https://www.gov.uk/government/publications/structure-approved-document-a

Source links lead to external official websites. We provide original explanatory notes and do not reproduce paid standards.

About this library

Independent, plain-English reference notes by Saeed Azarshab. The library covers the 42 subjects listed here; it is not every law affecting construction, an official government publication or a project-specific compliance decision. Building Regulations, Approved Documents, workplace safety duties and planning permissions have different roles.

Editorial source review: . Check the current official text, commencement dates, outstanding amendments and transitional arrangements before relying on a requirement. Publication date is not necessarily the date a rule applies. A relevant competent professional or authority must resolve project-specific questions.

Sources and lawful reuse

Contains public sector information licensed under the Open Government Licence v3.0, except where otherwise stated. These are original practical summaries, with links to the official material. No government endorsement is implied. We do not host copies of proprietary BS, ISO or Eurocode standards, third-party diagrams or publisher layouts. Check each source’s rights notice before reuse.

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