Building Tolerances

Typical tolerances for floors, walls, columns and more in building construction.

Building Tolerances

Typical tolerances for floors, walls, columns and more.

waterpass building tolerances

Typical building tolerances are indicated below. All measurements are in millimeters (mm) and represent acceptable deviation from specified dimensions.

Category	Material/Type	Tolerance (mm)
Floors, Flatness (3m)	Concrete, in situ	5
Floors, Flatness (3m)	Floor screed	5
Wall Vertical	Brickwork	10
Wall Vertical	Blockwork	10
Wall Vertical	Concrete, in situ	17
Wall Vertical	Concrete, precast	11
Column Vertical	Steel	6
Column Vertical	Timber	10
Column Vertical	Concrete, in situ	12
Column Vertical	Concrete, precast	10
Space between Walls	Brickwork	20
Space between Walls	Blockwork	21
Space between Walls	Timber	30
Space between Walls	Concrete, in situ	24
Space between Walls	Concrete, precast	18
Space between Columns	Steel	12
Space between Columns	Timber	12
Space between Columns	Concrete, in situ	18
Space between Columns	Concrete, precast	13
Beams, Vertical Position	Steel	20
Beams, Vertical Position	Timber	20
Beams, Vertical Position	Concrete, in situ	22
Beams, Vertical Position	Concrete, precast	23
Floors, Vertical Position	Concrete, in situ	15
Floors, Vertical Position	Concrete, precast	15
Plan Position	Brickwork	10
Plan Position	Steel	10
Plan Position	Timber	10
Plan Position	Concrete, in situ	12
Plan Position	Concrete, precast	10