| Defects |
Admission
conditions
|
|
0
|
1
|
| 1-Bended,
tangled fiber, curls, compression wood |
admitted |
| 2-Round
and oval knots |
category :
a
b
c
--------------------------------------------------------------------
admitted unlimited with the size
until :
20 mm
15 mm
10 mm
admitted, on faces, in average
on each m :
two
one
one
with the size of :
21…40 mm
16…30 mm
11…20 mm |
| 3-Transversal
and double knots (moustache knots) |
admitted from a category, on a
single face, in average 2 pieces/m with the great axe of maximum 80 mm |
| 4-Cracks |
|
-shallow
|
admitted |
-deep
|
admitted on faces and lateral sides
on a cumulated length of maximum 1/3 of piece length |
-through
|
admitted on heads, with a cumulated
length of max. 200 mm |
-on scales
|
admitted in the conditions of profound
cracks |
-ring-shaped
|
not admitted |
-frost crack
|
admitted on a single face, cumulated,
with the length of max. 150 mm and breadth of max. 15 mm |
| 5-Holes
and galleries made by insects (worm holes) |
admitted small holes, only on blunts
surfaces |
| 6-Red
colour / stain |
admitted of weak intensity, on
a single face and lateral side (fungal sap-stains) as stains and strips |
| 7-Blue
coloration / stains |
admitted but not to surpass, cumulated,
½ of piece surface |
| 8-Cafee
coloration (coloured sap-stains) |
admitted |
| 9-Mould |
admitted in isolated stains |
| 10-Soft
and hard sap rot |
not admitted |
| 11-Inbark |
admitted superficially, cumulated,
with the length of max. 150 mm and breadth of max. 15 mm |
| 12-Wet
areas |
admitted |
| 13-Resin
purses |
admitted on faces and lateral sides,
must be un-piercing |
| 14-Marrow |
admitted without radial cracks |
| 15-Cup |
admitted if the arrow is
not bigger than :
-
2 mm for pieces with breadth under
15 cm (inclusive)
-
4 mm for pieces with breadth bigger
than 15 cm
|
| 16-Simple
bow, twisting, curbing |
admitted with arrow under 3 mm
on each meter length |
| 17-Unparallel
and shakings on faces and lateral sides |
admitted as prescribed by STAS
942-89 |
| 18-Obtuz
wane |
admitted on both lateral side on
max. of ½ of piece length and 1/3 of piece breadth and the breadth
of exterior face shall not be reduced with more than 1/5 of its entire
breadth |
| 19-Sharp
wane |
not admitted |
| 20-Other
defects |
not admitted |
