Building Tolerances

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Typical building tolerances are indicated below:

Floors, Flatness

Measuered over a 3 m long straight edge:

• Concrete, in situ : 5 mm
• Floor screed : 5 mm

Wall Verticality

• Brickwork : 10 mm
• Blockwork : 10 mm
• Concrete, in situ : 17 mm
• Concrete, precast : 11mm

Column Verticality

• Steel : 6 mm
• Timber : 10 mm
• Concrete, in situ : 12 mm
• Concrete, precast : 10 mm

Space between Walls

• Brickwork : 20 mm
• Blockwork : 21 mm
• Timber : 30 mm
• Concrete, in situ : 24 mm
• Concrete, precast : 18 mm

Space between Columns

• Steel : 12 mm
• Timber : 12 mm
• Concrete, in situ : 18 mm
• Concrete, precast : 13 mm

Beams, Vertical Position

• Steel : 20 mm
• Timber : 20 mm
• Concrete, in situ : 22 mm
• Concrete, precast : 23 mm

Floors, Vertical Position

• Concrete, in situ : 15 mm
• Concrete, precast : 15 mm

Plan Position

• Brickwork : 10 mm
• Steel : 10 mm
• Timber : 10 mm
• Concrete, in situ : 12 mm
• Concrete, precast : 10 mm

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