1

2

3

4

5

6

Group

Deviations applicable to

Permitted position deviations, in mm,  for distances between measuring points

0.1m

1m^a

4m^a

10m^a

15m^ab

1

unfinished upper surfaces of floors, subfloors and concrete bases

10

15

20

25

30

2

unfinished upper surfaces of floors, subfloors and concrete bases subject to more stringent requirements (e.g. to receive floating screed, industrial floors, tile flooring and bonded screed), and finished surfaces for minor purposes (e.g. in storerooms or basements)

5

8

12

15

20

3

finished floors (e.g. screed as wearing courses or screed to receive a flooring, tiled floorings, trowelled or bonded floorings)

2

4

10

12

15

4

as for group 3, but subject to more stringent requirements

1

3

9

12

15

5

unfinished walls and unfinished ceilings

5

10

15

25

30

6

finished walls and soffits (e.g. plastered walls, wall claddings and linings, suspended ceilings)

3

5

10

20

25

7

as for group 6, but subject to more stringent requirements

2

3

8

15

20