| Defects |
Admission
conditions
|
|
0
|
1
|
| 1-Bended,
tangled fiber, curls, compression wood |
admitted |
| 2-Round
and oval knots |
unlimited admitted on faces and
lateral sides knots of a category knots from categories b and c admitted
as follows :
b
c
---------------------------------------------------------------------
admitted unlimited on lateral sides
with the size until 20 mm;
admitted unlimited with the size
until :
35 mm
25 mm
admitted, on faces, in average
on each m :
three
two
with the size of :
36…50 mm
26…40 mm
admitted, on faces, in average
on each m :
two
none
with the size of :
21…25 mm
_ |
| 3-Transversal
and double knots (moustache knots) |
admitted from a category - unlimited
admitted from b category on both faces in average three pieces/m with the
great axle of max. 100 mm or three pieces/m with small axle until 10 mm,
indifferent of the big axle length |
| 4-Cracks |
|
-shallow
|
admitted |
-deep
|
admitted |
-through
|
admitted unlimited on faces and
lateral sides with the
condition of keeping the piece
integrity, and on heads admitted with cumulated length of max. 1/3 from
piece length |
-on scales
|
admitted |
-ring-shaped
|
admitted in piercing cracks condition |
-frost crack
|
admitted |
| 5-Holes
and galleries made by insects (worm holes) |
admitted on faces and on one lateral
sides in average per m max. 6 holes |
| 6-Red
stain, blue stain, cafee colour and mould |
admitted |
| 7-Soft
sap rot |
admitted sporadically in stains
of max. 4 cm² |
| 8-Hard
sap rot |
admitted on a single face and on
a single lateral side without surpassing ¼ of piece length |
| 9-Inbark,wet
areas, resin purses, marrow |
admitted |
| 10-Cup |
admitted if the arrow is
not bigger than :
-
4 mm for pieces with breadth under
15 cm (inclusive)
-
6 mm for pieces with breadth bigger
than 15 cm
|
| 11-Simple
bow, twisting, curbing |
admitted with arrow under 3 mm
on each meter length |
| 12-Unparallelism
and snakings on faces and lateral sides |
admitted as prescribed by STAS
942-89 for deviations at breadth and thickness |
| 13-Obtuz
blunt / wane |
admitted on both lateral sides
on the entire length and on depths of max. of 2/3 of piece
thickness with the condition that the breadth of exterior face shall not
be reduced with more than 1/2 of its entire breadth |
| 14-Sharp
blunt / wane |
admitted on both lateral sides,
on max. 1/4 of piece length,with the condition that the breadth of exterior
face not to be reduced with more than ½ on its entire breadth |
| 15-Other
defects |
not admitted |
