England · Statutory guidance
Structure: Approved Document A
Guidance on structural loading, foundations, walls, floors, roofs and disproportionate collapse.
- Edition
- 2004 edition incorporating 2010 and 2013 amendments
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Structure
Open original PDF at page 18 Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.
O N L I N E V E R S I O N
A1/2
THICKNESS OF WALLS IN CERTAIN SMALL BUILDINGS
Diagram 3 Determination of wall thickness
See para 2C5
Table 3 M inimum thickness of certain external walls, compartment walls and
separating walls
Height of wall Length of wall Minimum thickness of wall
Not exceeding 3.5m Not exceeding 12m 190mm for whole of its height
Exceeding 3.5m but not exceeding 9m Not exceeding 9m 190mm for whole of its height
Exceeding 9m 290mm from the base for the height of
but not exceeding 12m one storey and 190mm for the rest of its height
Exceeding 9m but not exceeding 12m Not exceeding 9m 290mm from the base for the height of
one storey and 190mm for the rest of its height
Exceeding 9m 290mm from the base for the height of
but not exceeding 12m two storeys and 190mm for the rest of its height
Structure Approved Document A
16 O N L I N E V E R S I O N
Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.