Introduction

The following information is intended to introduce the key elements of Part A: Structure. Wherever possible the relevant document contents or sections are included with each set of regulations.

Use the link below for the full building regulations document;

• Note: All information is current as of January 2006, as is subject to change.

Loading and ground movement

The building shall be constructed so that the combined dead, imposed and wind loads are sustained and transmitted by it to the ground -
(a) safely; and
(b) without causing such deflection or deformation of any part of the building, or such movement of the ground, as will impair the stability of any part of another building.
Part A1. (1) Loading – Loading and Ground Movement

In assessing whether a building complies with sub paragraph (1) regard shall be had to the imposed and wind loads to which it is likely to be subjected in the ordinary course of its use for the purpose for which it is intended.
Part A1. (2) Loading – Loading and Ground Movement

A2. The building shall be constructed so that ground movement caused by;
(a) swelling, shrinkage or freezing of the subsoil; or
(b) land-slip or subsidence (other than subsidence arising from shrinkage), in so far as the risk can be reasonably foreseen, will not impair the stability of any part of the building.
Part A2. (1) Ground Movement – Loading and Ground Movement

Section 1: Codes, Standards and other references for all building types
Section 2: Sizes of structural elements for certain residential buildings and other small buildings of traditional construction
Section 2A: Basic requirements for stability
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

Disproportionate collapse

A3. The building shall be constructed so that in the event of an accident the building will not suffer collapse to an extent disproportionate to the cause.
Part A3. (1) Disproportionate Collapse

Section 5: Reducing the sensitivity of the building to disproportionate collapse in the event of an accident

Further information and useful links

• Making structural changes to your property
• Full guide to the building regulations
• Successfully damp proofing your home

• Find a Builder near you
• Find an Architect near you
• Find an Chartered Surveyor near you

• Building Regulations an explanatory booklet (odpm.gov.uk)
• Party Wall Guidance (rics.org)
• Impact of the Party Wall Act 1996 (odpm.gov.uk)