| Quality |
BB |
CC |
Back |
| Item |
| Knot, (pin knot is excluded), bark pocket and pitch pocket. |
Total number of knot, .bark pocket and pitch pocket, (bark pocket and pitch pocket of 1/8 in. or less of maximum diameter are excluded) |
Not Limited |
Not Limited |
Not Limited |
| Sound Knot |
2 in. or less of maximum diameter. |
Do |
|
| Dead Knot |
3/4 in. or less of maximum diameter. |
Do |
|
| Knot Hole |
1/8 in. or less of maximum diameter. But the mended one shall not exceed 1/2 in. of maximum diameter. |
1/4" or less of MAX dia. But the mended one shall not exceed 1/2" of maximum diameter. |
1?in. or less of maximum diameter. |
| Bark pocket and pitch pocket |
1?in. or less of maximum diameter. |
Not more than 3" in maximum diameter. |
Not Limited |
| Pin Knot |
Not Limited |
Not Limited |
Not Limited |
| Discoloration |
Not Conspicuous |
Permitted |
Not Limited |
| Stain |
Not Conspicuous |
Not Conspicuous |
Not Conspicuous |
| Decay |
None |
None |
Very Slight |
| Split |
It shall not exceed 1/16 in. of width and length of 10 per cent of the piece length. But the filled one shall not exceed 1/8" of width and length of 15 percent of the piece length. |
It shall not exceed 1/8 in. in width and 12" or less in length. But filled splits of 1/4" or less in width and length 18" or less are permissible. |
It shall not exceed 1/4 in. of width and length of 25 percent of the piece length. But the filled one shall not exceed 1/2" of width and length of 25 percent of the piece length. |
| Cross Break |
Length shall not exceed 10 percent of the piece length. |
Length shall not exceed 20% of the width. |
Length shall not exceed 30 percent of the piece length. |
| Worm Hole |
I. 1/16" or less of maximum diameter. Those shall not be clustered, so remarkably.
II. Linear worm hole shall not exceed 5/8" of length, but shall be mended.
Total number shall not exceed a quotient resulted from dividing the surface area in sq.ft. by 5 sq.ft.
(If the quotient has any fraction, the quotient shall read as its integer plus "1".) |
I. 1/16" or less of maximum dia. and not clustered.
II. Linear worm hole shall not exceed 1 inch of length and shall be mended. Total number shall not exceed 1 per sq.ft. |
Not Conspicuous |
| Presence of Sapwood and heartwood on the surface. |
Not Limited |
Not Limited |
Not Limited |
| Sound burl, vine streak, cross bar. |
Not Conspicuous |
Not Limited |
Not Limited |
| Rough cut Torn grain Brashness. |
10 percent or less of the surface area. Not conspicuous. |
15% or less of the surface area. Not conspicuous. |
Not Conspicuous |
| Shim |
Color shall be matched. Gap is not acceptable. |
Do |
Not Limited |
| Joint |
Color shall be almost matched. Gap of joint shall not exceed 1/32" of width and it shall be mended. |
Do |
Gap of joint shall not exceed 1/8 in. of width. |
| Blister |
None |
None |
None |
| Wrinkle |
None |
None |
Slight |
| Hole (Worm hole excluded) |
3/8" or less of maximum diameter. It shall be mended. |
1/2" or less of maximum diameter. It shall be mended. |
1?or less of maximum diameter. |
| Finishing |
Almost good finish |
Do |
Not rough |
| Insufficient removal of tape |
None |
Not Conspicuous |
Slight |
| Perforation and other process (Applicable only to the processed plywood) |
Do |
Do |
Not rough |
| Finishing of transparent costing which does not obscure the grain or texture. |
Do |
Do |
|
| Press Mark |
Max 3mm x 100mm 2 per panel, it shall be mended. |
1. Same direction of grain max 12.7 mm x 200mm, it shall be mended.
2. Cross direction of grain max 6mm x 100mm. It shall be mended.
3. Small press mark it shall be mended. |
Permitted if not affect face quality. |
| Core Overlap |
Slight |
Slight |
- |
| Core Uneven Thickness |
None |
Not Conspicuous |
- |
| Core Void |
It shall not affect the surface core void at the edge shall not exceed 3mm of width. |
It affect the surface slightly. core void at the edge shall not exceed 4mm of width. |
- |
