| Defects |
Admission
conditions
|
|
A class
|
B class
|
|
|
|
| Healthy
knots |
not
considered the through knots with size up to : |
|
|
10
mm |
25
mm |
|
-admitted,
on each meter, max. : |
|
|
2
pieces |
3
pieces |
|
with
the size of : |
|
|
11…25
mm |
26…40
mm |
|
-at
edged and semi-selvedged pieces knots with max. double size,but 50% less
in number from those limited admitted |
|
-at
edged pieces, without other defects, double sized knots are admitted but
50% less in number |
|
-at
pieces with length bigger than 3 m, on the piece part which is surpassing
this length 1 knot is admitted additionally with max. size of 80 mm |
|
-at
unselvedged pieces, knots on edges are not considered |
| Unsound
knots |
in
the limited admitted healthy knots place : |
|
|
-at
pieces with lengths of 1,00-1,70 m 1 knot / piece is admitted with
size of max. 25 mm on a single face |
-
knots with size under 10 mm are not considered |
|
-at
pieces of over 1,70 m length max. 1 knot/m is admitted, with size of max.
25 mm, unthrough for pieces of max. 3 m length and through at pieces with
bigger length |
-
max. 3 knots/ 2m size max.40 mm |
|
-at
selvedged and semi-selvedged pieces double sized are admitted 50%
less in number |
-
double sized knots are admitted with 50% less in number |
|
-at
selvedged pieces without other defects, double sized knots are admitted
50% less in number |
|
| Shakes |
|
|
| -
frost shake |
-admitted
on a face max. 2 pcs./m with cumulated length of max. 1/3 piece‘ s breadth |
-
admitted on both faces max. 3pieces/m with cumulated length of max.
piece‘ s breadth |
| -ring |
admitted
if in their length is not surpassing from piece‘ s breadth |
|
1/3 |
1/2 |
|
and
in depth |
|
|
1/3 |
1/2 |
|
from
piece‘ s thickness |
|
| -shallow |
admitted |
|
| -unthrough |
admitted
on faces and sides if their cumulated length is under |
|
1/3 |
1/2 |
|
from
piece‘ s length |
|
| -through |
-admitted,
on both heads, at pieces under 24 cm of breadth and shorter than
3 m, with cumulated length of max.: |
|
piece‘
s breadth |
1+
½ piece‘ s breadth |
|
-admitted
on both heads at pieces with the length bigger than 3 m, with the cumulated
length of max.: |
|
1+
½ piece‘ s breadth |
2
x piece‘s breadth |
|
-at
pieces with breadth bigger than 24 cm, admitted at max. 10% of quantity,
right shakes, at heads, on a cumulated length of max.: |
|
from
piece‘s length, if from separeted by shake parts might be obtained by selvedging
pieces with min. 6 cm breadth. |
| Heart |
not
admitted |
admitted
on a face and edge if the piece doesn‘ t have any other defects |
| Slope
of grain |
admitted
at selvedged pieces if is not surpassing on each m : |
|
-not
considered at semiselvedged and unselvedged pieces |
| Inbark |
admitted
unthrough with length of max. ½ from piece‘ s breadth but not surpassing,
cumulated with frost cracks and unsound knots, 2 defects / m |
admitted
through, with max. length of ½ of piece‘ s breadth without surpassing,
cumulated with frost cracks and unsound knots, 3 defects/m |
| Fungal
heartwood stains and Streaks / Red heart |
admitted
if healthy; admitted with intense coloured strips of stared heart origin,
on a single face, without desintegration traces |
admitted
in intense coloured strips with stared heart origin with desintegration
traces, on both faces |
| Other
coloration than red heart |
admitted,
if without desintegration traces |
| Mould
and storage stains |
admitted
in sporadic appearances with depth not bigger than : |
| Insects
holes |
not
admitted |
| Wane |
at
selvedged pieces admitted on both sides, if not bigger than ½
of piece‘s width, provided that sawn face shall not be under |
| Simple
bow |
admitted
if the arrow is not bigger than |
| Spring |
admitted
at selvedged pieces, if the arrow/meter of length is not bigger than
: |
|
at
semiselvedged and unselvedged pieces |
| Cup |
admitted
if the arrow is not bigger than : |
|
2
mm at pieces with breadth of max. 15 cm ; 5 mm at pieces with breadth over
15 cm |
4
mm at pieces with breadth of max. 15 cm; 7 mm at pieces with breadth over
15 cm |
| Twist |
admitted
on each length meter : |
| Coarse
cut |
admitted
at unselvedged pieces, with length under 15 cm and with the breadth under
½ from piece breadth at a single head. |
| C
class |
boards
which are not fulfilling the B class conditions, without sap rot. |
|
