Permitted dimensional deviations
Permitted dimensional deviations
The maximum permitted dimensional deviations from nominal sizes for sawn timber are shown in the following tables:
Maximum permitted dimensional deviation for sawn-surface sawn timber |
||
---|---|---|
Dimension |
Dimensional deviation |
|
Thickness and width ≤ 100 mm |
- 1.0 … + 3.0 mm |
|
Thickness and width ≥ 100 mm |
- 2.0 … + 4.0 mm |
|
Length when sorted according to length |
- 25 … + 50 mm |
|
Length when cut to the specified size |
±2.0 mm |
Maximum permitted dimensional deviation for dimensioned sawn timber |
|
---|---|
Dimension |
Dimensional deviation |
Thickness and width ≤ 100 mm |
±1.0 mm |
Thickness and width ≥ 100 mm |
±1.5 mm |
Length when sorted according to length |
- 25 … + 50 mm |
Length when cut to the specified size |
±2.0 mm |
Maximum permitted dimensional deviation for all-round planed sawn timber |
|
---|---|
Dimension |
Dimensional deviation |
Thickness ≤ 20 mm |
±0.5 mm |
Thickness ≥ 20 mm1 |
±1.0 mm |
Width ≤ 100 mm |
±1.0 mm |
Width ≥ 100 mm |
±1.5 mm |
Length when sorted according to length |
- 25 … + 50 mm |
Length when cut to the specified size |
±2.0 mm |
1) The maximum permitted dimensional deviation for thickness in floorboards is always ± 0,5 mm |
The average values for the actual thickness and width of pieces belonging to a batch of sawn timber cannot, however, be less that the nominal size. In the VII quality, greater dimensional deviations than given above are permitted.