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I.
General issues |
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1 Boards
with length between 3 and 6 m are classified within the following quality
classes :
2.
Boards with lengths under 3 m are classified within two classes :
-
SI
quality class according to at least class B quality
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SII quality
class according to at least class D quality
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II.
Classifying principles |
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Principle
no. 1 - Boards classification is made
according to defects presented on their whole and not according to properties
of parts obtained by cutting the whole piece in parts.
Principle
no.2 - Boards quality class establishment
is made taking into account the aspect of the weaker face and lateral
side when the difference between the two faces and two lateral sides is
not bigger than 1 quality class. In case the above mentioned difference
is bigger the piece is classified within the class immediately superior
to the weaker face or lateral side.
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III.
Knots |
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The sizes
amount of all knots located on the same transversal line of a board should
not surpass the size of the bigger transversal knot admitted at the one
class.
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IV.
Other issues |
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Through clean
surface is understood the board part without
knots, plugged bark and sap rot.
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