[G] look up term in glossary.
| Bamboo |
| Location |
Defects |
Grade A |
Grade B |
Grade C |
| Face
Veneer |
Live knot [G] |
Diameter ≤ 2 mm; sparse |
Diameter ≤ 10 mm; sparse |
Diameter ≤ 15 mm; sparse |
| Dead knot [G] |
Not allowed |
3 allowed, diameter ≤ 2 mm |
3 allowed, diameter ≤ 8 mm |
| Sapwood [G] |
Allowed |
Allowed |
Allowed |
|
Colour
variation [G] |
Slight |
Slight |
Natural and harmonic |
| Rot [G] |
Not allowed |
Not allowed |
Not allowed |
| Inbark [G] |
Not allowed |
3 allowed, length ≤ 20 mm; width ≤ 3 mm, natural |
2 allowed, length ≤ 40 mm, light |
| Pith [G] |
Not allowed |
Not allowed |
Not allowed |
| Fungus [G] |
Not allowed |
Not allowed |
Slight |
| Retrorse veins |
Not allowed |
Slight |
Allowed |
| Crack [G] |
Not allowed |
Not allowed |
Width ≤ 0.2 mm; length ≤ 20 mm(mending) |
| Veins |
FQ mixed |
FQ mixed |
FQ mixed |
| Brown line [G] |
Not allowed |
Not allowed |
Allowed |
| Dimension shortness |
Not allowed |
Not allowed |
Not allowed |
| Glue stains |
Not allowed |
Not allowed |
≤ 0.5% of plank's area |
| Wormholes [G] |
Not allowed |
Not allowed |
Not allowed |
| Indentation |
Not allowed |
Not allowed |
Slight |
|
Discolouration [G] |
Not allowed |
Not allowed |
Slight and natural |
| Resin pocket [G] |
Not allowed |
Not allowed |
Length > 1 mm |
| Wane [G] |
Not allowed |
Not allowed |
Not allowed |
| Bamboo abnormity |
Not allowed |
Not allowed |
Slight |
| Face veneer gap |
Transverse |
0.1 mm |
0.2 mm |
0.2 mm |
| Lengthwise |
0.1 mm, length > 10 mm |
0.2 mm, length > 200 mm |
0.2 mm, length > 300 mm |
| Middle
Layer |
Middle layer gap |
3 mm |
3 mm |
3 mm |
| Rot [G] |
Slight, no fall off |
Slight, no fall off |
Slight, no fall off |
| Tongue missing |
≤ 20 mm (cumulative); ≤ 1% of plank's length |
≤ 20 mm (cumulative); ≤ 1% of plank's length |
≤ 30 mm (cumulative); ≤ 3% of plank's length |
| Destruction of ends |
Not allowed |
Slight |
≤ 2 mm each end |
| Back
Veneer |
Bore hole |
Diameter ≤ 30 mm |
Diameter ≤ 30 mm |
Diameter ≤ 30 mm |
| Dead knot [G] |
No fall off |
No fall off |
Allowed |
| Wormholes [G] |
Slight |
Slight |
Mild |
| Inbark [G] |
Slight |
Slight |
Allowed |
| Cymbate and
round mending |
≤ 5% of plank's area |
≤ 10% of plank's area |
Allowed |
| Dry crack |
Slight |
Slight |
Length ≤ 1000 mm; width ≤ 10 mm |
| Lack of sanding |
Slight |
Slight |
Allowed |
|
Varnish |
Putty mending
mark |
Not allowed |
Not allowed |
Slight |
| Varnish stains |
Not allowed |
Not allowed |
Slight |
| Light not
even |
Not allowed |
Not allowed |
Slight |
| Varnish
protruding over the edge |
Not allowed |
Not allowed |
Slight |
| Scratches
/Exposed undercoat |
Not allowed |
Not allowed |
Slight |
| Varnish
not even |
Not allowed |
Not allowed |
Slight |
| Others |
Tongue deflection |
Not allowed |
Not allowed |
Not allowed |
| Roughness
of the tongue and groove |
Not allowed |
Not allowed |
Slight |
| Wanting arris |
Not allowed |
Not allowed |
Slight |
| Joining of tongue
and groove |
Good fit |
Good fit |
Good fit |
| Cup
warping concave [G] |
Chord ≤ 0.15% of plank's width |
| Cup
warping convex [G] |
Chord ≤ 0.20% of plank's width |
| Bow
warping concave [G] |
Irrespective of grading:
- Tongue and Groove with top veneer ≤ 1 mm: Chord ≤0.5% of plank's length
- Tongue and Groove with top veneer > 1 mm: Chord ≤0.2% of plank's length
- Glue-less system with top veneer > 1 mm: Chord ≤0.2% of plank's length
|
| Bow
warping convex [G] |
Irrespective of grading:
- Tongue and Groove with top veneer ≤ 1 mm: Chord ≤1.0% of plank's length
- Tongue and Groove with top veneer > 1 mm: Chord ≤0.8% of plank's length
- Glue-less system with top veneer > 1 mm: Chord ≤0.4% of plank's length
|
| Height difference |
0.1 mm |
0.15 mm |
0.2 mm |
| Roughness
of ends |
Not allowed |
Not allowed |
Slight |
| Tolerance on Dimensions |
Length (+/-) 1 mm,Width (+/-) 0.1 mm,Thickness (+/-) 0.15 mm,Gap 0.2 mm |
