| Defects |
Admission
conditions
|
|
0
|
1
|
| 1-Bended,
tangled fiber, curls, compression wood |
admitted |
| 2-Round
and oval knots |
category:
a
b
c
--------------------------------------------------------------------
admitted unlimited on lateral sides
with the size until 20 mm;
admitted unlimited with the size
until :
30 mm
25 mm
20 mm
admitted, on faces, in average
on each m :
three
two
two
with the size of :
31…50 mm
26…40 mm
21…30 mm
admitted, on faces, in average
on each m :
two
one
none
with the size of :
21…25 mm
21…25 mm
_ |
| 3-Transversal
and double knots (moustache knots) |
admitted from a category, on both
faces, in average 3 pieces/m with the great axle of max. 100 mm or
3 pieces/m with the small axle until 10 mm, indifferent of the big
axle length
admitted from b category, on a single
face, in average 2 pieces/m with the great axle max. 80 mm or 2 pieces
/m with the small axle until 5 mm, indifferent of the big axle length |
| 4-Cracks |
|
-shallow
|
admitted |
-deep
|
admitted on faces and lateral sides
on a cumulated length of maximum 1/2 of piece length |
-through
|
admitted on heads, with a cumulated
length of max. ¼ of piece length |
-on scales
|
admitted
in the conditions of profound cracks |
-ring-shaped
|
admitted
on a single face with length of max.¼ from piece length |
-frost crack
|
admitted on a single face, cumulated,
with the length of max. 200 mm and breadth of max. 25 mm |
| 5-Holes
and galleries made by insects (worm holes) |
admitted on a single face and on
one lateral face max. 3 pieces/m |
| 6-Red
colour / stain |
admitted in stains and strips without
surpassing, cumulated, ½ of piece surface |
| 7-Blue
colour, caffe colour, mould |
admitted |
| 8-Soft
sap rot |
not admitted |
| 9-Hard
sap rot |
admitted on 1/6 of piece surface,
on a single face, on a single lateral side |
| 10-Inbark |
admitted superficially, cumulated,
with the length of max. 200 mm and breadth of max. 25 mm |
| 11-Wet
areas |
admitted |
| 12-Resin
purses |
admitted unlimited on faces and
lateral sides |
| 13-Marrow |
admitted without radial cracks |
| 14-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
|
| 15-Simple
bow, twisting, curbing |
admitted with arrow under 3 mm
on each meter length |
| 16-Unparallel
and snakings on faces and lateral sides |
admitted as prescribed by STAS
942-89 for deviations at breadth and thickness |
| 17-Obtuz
wane |
admitted on both lateral sides
on the entire length and on depths of max. of ½ of piece thickness
with the condition that the breadth of exterior face shall not be reduced
with more than 1/5 of its entire breadth |
| 18-Sharp
wane |
admitted on a single lateral face,
on max. 1/ 6 of piece length , the exterior face as per obtuz blunt; in
case when it appears on both lateral sides is admitted only on 1/12 on
piece length |
| 19-Other
defects |
not admitted |
