Calculating Wall Thickness During Building Part 1

During building, wall thickness is a balance between creating the maximum amount of room space whilst ensuring that the house is structurally secure and stable. Other factors to be taken into account are the materials used in the construction of the wall, the number of storeys of the building and the storey that the wall is built on.

For solid external walls, compartment walls and separating walls:

Brickwork or blockwork:

  • Walls should have a thickness of at least 1/16 of the storey height.
  • If the height of the wall is lower than 3.5 metres, the minimum thickness is 190 mm for the whole of its height.
  • If the wall is between 3.5 m and 9 m in height, then for a length of below 9 m of wall the minimum thickness must be 190 mm for the whole of its height.
  • For a wall between 3.5 m and 9 m in height and between 9 and 12 m in length, the minimum thickness must be 290 mm for the first storey then 190 mm for the rest of its height.
  • A wall between 9 and 12 m in height and less than 9 m in length, the minimum thickness must be 290 mm for the first storey then 190 mm for the rest of its height.
  • For a wall between 9 and 12 m in height and between 9 and 12 m in length, the minimum wall thickness is 290 mm for the first to storeys then 190 mm for the rest of its height.

Uncoursed stone, flints, clunches bricks or any other burnt or vitrified material:

  • Walls should have a thickness of at least 0.083 of the storey height.
  • If the height of the wall is lower than 3.5 metres, the minimum thickness is 252.7 mm for the whole of its height.
  • If the wall is between 3.5 m and 9 m in height, then for a length of below 9 m of wall the minimum thickness must be 252.7 mm for the whole of its height.
  • For a wall between 3.5 m and 9 m in height and between 9 and 12 m in length, the minimum thickness must be 385.7 mm for the first storey then 252.7 mm for the rest of its height.
  • A wall between 9 and 12 m in height and less than 9 m in length, the minimum thickness must be 385.7 mm for the first storey then 252.7 mm for the rest of its height.
  • For a wall between 9 and 12 m in height and between 9 and 12 m in length, the minimum wall thickness is 385.7 mm for the first to storeys then 252.7 mm for the rest of its height.

BPM Maintenance are a Bath based building company offering a large range of trades with accreditation from Trading Standards and Safe Contractor.

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Comments
One Response to “Calculating Wall Thickness During Building Part 1”
  1. arya says:

    Thanks alot ….
    Help me alot in practical examination

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