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About LiS Ltd. Offer & Pricing Round Timber Sawn Timber

Ukrainian state standards of sawn timber

Sawn timber of hardwoods. Specifications

Sawn timber of softwoods. Specifications

Measurements and acceptance of sawn timber. Specifications

The basic defects and their account

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Offer and Pricing updated


THE BASIC DEFECTS AND THEIR ACCOUNT IN VARIOUS KINDS OF WOOD PRODUCTS

The basic defects and their account in various kinds of wood products
# The name of defect The defect which is taken into account
in round timber in sawn timber in veneer sheet
1. Knots + + +
uncovered knot + -- --
- round -- + +
- oval -- + +
- spike -- + +
- face -- + --
- edge -- + --
- arris -- + --
- end -- + --
- stitching -- + --
- single (scattered) -- + --
- group -- + --
- branched -- + --
- intergrown -- + +
- partially intergrown -- + +
- unintergrown (dead or dry) -- + +
- loose -- + +
- sound + + +
--- light -- + +
--- dark -- + +
--- with cracks -- + +
- decayed + + +
- unsound + + +
- tobacco + + +
- one-sided -- + --
- traversing (through) -- + --
overgrown knot + -- --
2. Fissures      
- heart shake + + --
--- simple + + --
--- star shake + + --
- ring shake + + --
- frost crack + + --
- check + + --
- crack + + --
--- face crack -- + --
--- edge crack -- + --
- end shake + + --
- not traversing + + --
---surface check + + --
---deep + + --
- traversing -- + --
- close -- -- +
- dispersed -- -- +
3. Defects of the form of a trunk      
fall-off + + * --
 butting + + * --
- round + -- --
- ribbed + -- --
ovality + -- --
woodknod + + * --
sweep + + * --
- simple + + * --
- multiple + + --
4. Defects of a structure of wood      
inclination of fibres + + +
- tangential -- + +
- radial -- + +
compression wood* + + +
- local + + +
- continuous + + +
tension wood ** -- + +
curly grain -- + +
- wavy -- + +
- tangled -- + +
tendril -- + +
- unilateral -- + --
- traversing -- + --
eyelets -- + +
- scattered -- + +
- group -- + +
- light -- -- +
- dark -- -- +
 pitch-pocket      
- unilateral -- + --
- traversing -- + --
pith -- + --
double pith + + --
eccentric pith + -- --
stub + + +
scar + + * --
bark pocket + + +
- open + + +
---unilateral -- + --
---traversing -- + --
- closed + + --
- intergrown -- -- +
- light -- -- +
- dark -- -- +
canker + + * --
- open + -- --
- closed + -- --
resine streak + + +
false core ** -- + +
mottle  -- + +
- tangential -- + +
- radial -- + +
- vein -- + +
---scattered -- -- +
---group -- -- +
---traces from veins -- -- +
included sapwood + + +
water-layer + + --
5. Chemical stain -- + +
- spent tan -- + +
- yellowness* -- + +
- light -- -- +
- dark -- -- +
6. Fungus defeats      
fungus nucleus stains + + +
mould -- + +
sapwood fungus colourings + + +
- blue stain + + +
- color sapwood  stains + + +
- light -- + +
- dark -- + +
- surface + + --
- deep + + --
- sublayer + + --
brown streak ** + + +
- face + -- --
- lateral + -- --
 rot + + +
- mottley sieve + + --
- brown cracked + + --
- white ** + + --
- sapwood + + +
---firm + + +
---soft + + +
- heartwood + + +
- external mouldering + -- --
 hollow heart + + +
7. Biological deteriorations      
wormhole + + +
- superficial + + * --
- not deep + + --
- deep + + --
---large + + +
---not large + + +
- traversing -- + +
deterioration of wood by parasitic plants      
- superficial -- + --
- deep -- + --
 by bird pecks + -- --
8. Foreign bodies, mechanical dama ges and defects of processing      
foreign bodies + + --
carbonification + + --
barking + -- --
tapping cut + + * --
butt trimming  + + --
wane -- + --
- blunt -- + --
- sharp -- + --
закорина -- -- +
tooth marks -- + +
snaking -- + --
hairiness -- + +
torn grain -- + +
fringe -- + --
notch + + --
sawcut + + --
detachment + + --
chip + + --
flag + + --
agnail -- + --
shear + + +
teases -- + --
dent -- + --
dint -- + +
fragmentary butt-end -- + --
ripples of veneer sheet -- -- +
pinhole -- + +
scratch -- + +
snatch -- + --
not milling -- + --
comb -- + +
polishing -- + --
shortage of polishing -- + --
burn -- + --
9. Warp -- + +
 bow -- + --
- simple -- + --
- compound -- + --
 spring -- + --
 cup -- + --
 twist -- + --

Notes:

+    - means, that defect is taken into account;
+ *  - means, that defect meets only in softwoods;
+ ** - means, that defect meets only in hardwoods.

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