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Ukrainian state standards of round timber products

Round timber hardwoods. Requirements in accordance with GOST 9462-88

Saw logs of the hardwoods, delivered for export. Specifications

Pulpwood for export. Specifications

The basic defects and their account

Sawn Timber Veneer Transportation Contents

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Feb 2015
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9 Apr 2015
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ROUND TIMBER HARDWOODS.
Requirements in accordance with GOST 9462-88


SAW LOG HARDWOODS GENERAL PURPOSE
Requirements in accordance with GOST 9462-88
Parameter, attribute The requirement
1 grade 2 grade 3 grade
1 Breed of wood all species
2 Nominal length, m:
oak, beech, ash, elm, maple, hornbeam
from 1,0 up to 6,0 with gradation 0,1
other species from 2,0 up to 6,0 with gradation 0,25
3 Deviations from nominal length, m:
at length 1,0 - 1,9 m
from +0,03 up to +0,05
2,0 m and more from +0,03 up to +0,10
4 Least diameter of a log, cm 14 (for processing on milling-sawing machine tools - 12)
5 Diameter of the greatest knot and the stepson, cm 3 10 allowed
6 Diameter of a tobacco knot, cm not allowed 4 7
7 Thickness of a cutting heartwood rot and hollow heart, shares of diameter of a butt-end:
at diameter of a butt-end up to 24 cm
0,10 0,25 0,33
(on one of butt-ends)
26 - 38 cm 0,25 0,33 0,33; at length up to 3 m - 0,50, at the second butt-end - 0,25
(on one of butt-ends)
40 cm and more 0,33 0,50 0,50, at the second butt-end - 0,25
(on one of butt-ends)
8 Brown streak not allowed allowed without white spots and efflorescences allowed
9 Depth of sapwood rot, shares of diameter of a butt-end not allowed 0,10 0,10
10 External mouldering rot not allowed
11 Thickness of a cutting of fissures (except for checks from shrinkage), shares of diameter of a butt-end 0,33 0,33 allowed
12 Depth of lateral cracks from shrinkage, shares of diameter of a butt-end 0,05 0,20 0,20
13 Length of end shakes from shrinkage no more an allowance on length no more than diameter of the top butt-end
14 Wormhole not allowed allowed
15 Height of sweep, interests percentage of the length of a log:
simple
1,0 1,5 2,0
complex 0,5 0,75 1,0
16 Depth of the mechanical damages, open bark pocket, scar and canker, cm the sum of the top end face of 0,1 diameters and half-difference diameters in a place of damage and to the top end face allowed
17 Thickness of a cutting of mechanical damages, bark pockets, scars, cheks from shrinkage, shares of diameter of a log 0,33 0,50 allowed
18 Height of knots (from a bark), cm 2 2 2
19 Butt trimming not  more than allowance on length
20 Volume of defective logs in a party(set) (not appropriate to requirements on item 1-19), % 3,0
21 Parity(ratio) of the prices on birch saw log and the saw logs of others soft foliferous species (length 2,0 - 6,0 m) 100 (the basic price) 77 65
22 Parity(ratio) of the prices on hardwood saw log species (length 3,0 - 4,0, diameter 25 - 44 cm):
oak, ash, elm
100 (the basic price) 81 72
beech 76 63 54
23 Correction factor to the basic price of logs of hardwood species of the various sizes nominal length of logs, m
1,0 - 2,9 3,0 - 4,0 4,1 - 6,0
Diameter of logs up to 24 cm incl. 0,76 0,91 1,13
26 - 44 cm 0,82 1,00 1,23
46 cm and more 0,88 1,09 1,34
24 The price of defective logs, at volume of defective logs in a party(set) (sample):
up to 3,0 %
it is equal to the price of suitable logs of the 3 grade on item 21
3,1 % and more 45 % from the basic price
25 Factor of switch of the piled volume of logs with a bark in dense volume without a bark (on OST 13-43-79) at nominal length of logs, m
3,0 - 3,9 4,0 - 5,5 5,6 - 6,5
trams without a hat, automobiles 0,64 0,59 0,57
trams with a hat:
zone dimension
0,63 0,58 0,58
usual dimension 0,60 0,55 0,54

SKI LOG HARDWOODS
Requirements in accordance with GOST 9462-88
Parameter, attribute

The requirement
1 grade

1 Breed of wood birch, maple, hornbeam, , a beech, an ash
2 Nominal length, m:
birch
1,5
birch, maple, elm, beech, ash, hornbeam from 2,0 up to 2,4 with gradation 0,10
3 Deviations (rejections) from nominal length, m:
at length of 1,5 m
from +0,03 up to +0,05
from 2,0 up to 2,4 from +0,03 up to +0,10
4 Least diameter of a log, cm 16
5 Diameter of the greatest knot and the stepson, cm 3
6 Tobacco knots not allowed
7 Thickness of a cutting of kernel decays and hollow, shares of diameter of a butt-end (at both a butt-ends) 0,33
8 Brown streak, sapwood rot, external mouldering decay, a wormhole (except surfaces) not allowed
9 Thickness of a cutting of a false kernel, share of diameter of a butt-end
at diameter of a butt-end up to 26 cm
0,5
26 cm and more 0,6
10 Thickness of a cutting of cracks (except for cracks from shrinkage), shares of diameter of a butt-end 0,33
11 Depth of lateral cracks from shrinkage, shares of diameter of a butt-end 0,05
12 Depth of face cracks from shrinkage not more than allowance on length
13 Height of sweep, percentage from length of a log:
simple
1,0
at diameter of a log up to 24 cm 1,0
26 cm and more 2,0
complex allowed at a rate of half of norm of simple sweep
14 Depth of mechanical damages of bark pocket, scar and a canker the sum of the top butt-end of 0,1 diameters and half-difference diameters in a place of damage and at the top butt-end
15 Thickness of a cutting of mechanical damages, bark pocket, scars, cracks from shrinkage, a share of diameter of a log 0,33
16 Height of knots (from bark), cm 2
17 Butt trimming not more than allowance on length

VENEER LOG HARDWOODS (FOR PEELING)
Requirements in accordance with GOST 9462-88
Parameter, attribute The requirement
1 grade 2 grade
1 Breed of wood oak, maple, ash, birch, poplar, elm, beech, hornbeam, alder, aspen, linden
2 Nominal length, m 1,3; 1,6; 1,91; 2,23; 2,54 and multiple to them
3 Deviations(rejections) from nominal length, m:
blocks
from +0,02 up to +0,05
long pole from 2 blocks from +0,04 up to +0,15
long pole from 3 blocks from +0.06 up to +0,20
long pole from 4 blocks from +0.08 up to +0,25
4 Least diameter of a log, cm:
at length 1,3 and 1,6
16 16
at the greater length 18 18
5 Diameter of the greatest knot and the stepson, cm 3 7
6 Diameter of a tobacco knot, cm not allowed 4
7 The greatest thickness of a cutting of kernel decays and hollow, cm 10 10
8 External mouldering decay, lateral cracks from shrinkage not allowed
9 Brown streak not allowed allowed without white spots and efflorescences
10 Depth of sapwood rot, shares of diameter of a butt-end not allowed 0,10
11 Wormhole superficial and deep not allowed allowed
12 Height of sweep, percentage from length of a log:
simple at diameter of a log, cm:
16 - 18
1,0 1,0
20-24 1,0 2,0
26 and more 2,0 3,0
complex allowed at a rate of half of norm of simple sweep
13 The least depth of a zone peeling (without bark pocket, scar, canker, cracks, mechanical damages) in any part of radius at a butt-end of a log (but 4 cm from the centre and not closer), cm 5 4
14 The least angle between kerbs of tendrilsof the grown-in knots at birch logs, degree 120 allowed
15 The least ratio of cross diameter of a wound stain from grown-in knots to longitudinal (not less):
beech, hornbeam, linden, alder, aspen, poplar
2:1 allowed
oak, maple, ash 3:1 allowed
16 Height of knots (from bark), cm

2


PLANING LOG HARDWOODS
Requirements in accordance with GOST 9462-88
Parameter, attribute The requirement
1 grade 2 grade
1 Breed of wood all hardwoods
2 Nominal length, m from 1,5 with gradation 0,1
3 Deviations from nominal length, m:
at length 1,5 - 1,9 m
from +0,03 up to +0,05
2,0 m and more from +0,03 up to +0,10
4 Least diameter of a log, cm 24
5 Diameter of the greatest knot and the stepson, cm 3 10
6 Diameter of a tobacco knot, cm not allowed 4
7 Thickness of a cutting of kernel decays andhollow (on one of butt-ends), shares of diameter of a butt-end:
At diameter of a butt-end of 24 cm
0,10 0,25
26 - 38 cm 0,25 0,33
40 cm and more 0,33 0,50
8 Brown streak not allowed allowed without white spots and efflorescences
9 Depth of sapwood rot, shares of diameter of a butt-end not allowed 0,10
10 External mouldering decay not allowed
11 Thickness of a cutting of cracks (except for cracks from shrinkage), shares of diameter of a butt-end 0,33 0,33
12 Depth of lateral cracks from shrinkage, shares of diameter of a butt-end 0,05 0,20
13 Length of face cracks from shrinkage not more than allowance on length not more than diameter of the top butt-end
14 Wormhole not allowed allowed
15 Height of sweep, percentage from length of a log:
simple
1,0 1,5
complex 0,5 0,75
16 Depth of the mechanical damages, open bark pocket, scar and canker, cm the sum of the top end face of 0,1 diameters and half-difference diameters in a place of damage and to the top end face
17 Thickness of a cutting of mechanical damages, bark pocket, scar and canker, cm 0,33 0,50
18 Height of knots (from bark), cm 2
19 Butt trimming not more than allowance on length

MATCH LOG HARDWOODS
Requirements in accordance with GOST 9462-88
Parameter, attribute The requirement
1 grade 2 grade
1 Breed of wood aspen, poplar, linden, alder
2 Nominal length, m 2,0 and more with gradation 0,1
3 Deviations from nominal length, m from +0,03 up to +0,10
4 Least diameter of a log, cm 16
5 Diameter of the greatest knot and the stepson, cm 3 7
6 Diameter of a tobacco knot, cm not allowed 4
7 Thickness of a cutting kernel decays and hollow, shares of diameter of a butt-end (on one of butt-ends):
at diameter of a butt-end up to 24 cm
0,10 0,25
26 - 38 cm 0,25 0,33
40 cm and more 0,33 0,50
8 Brown streak not allowed allowed without white spots and efflorescences
9 Depth of sapwood rot, shares of diameter of a butt-end not allowed 0,10
10 External mouldering decay not allowed
11 Thickness of a cutting of cracks (except for checks from shrinkage), shares of diameter of a butt-end 0,33 0,50
12 Depth of lateral cracks from shrinkage, shares of diameter of a butt-end 0,05 0,20
13 Length of face end shakes from shrinkage not more than allowance on length not more than diameter of the top butt-end
14 Wormhole (deep and superficial) not allowed allowed
15 Height of sweep, percentage from length of a log:
simple:
at diameter of a log up to 24 cm
1,0 2,0
26 cm and more 2,0 3,0
complex allowed at a rate of half of norm of simple sweep
16 Depth of the mechanical damages, open bark pocket, scar and  canker, cm the sum of the top butt-end of 0,1 diameters and half-difference of diameters of a log in a place of damage and on the top butt-end
17 Height of knots (from  bark), cm 2
18 Butt trimming not more than allowance on length

CONSTRUCTION LOG HARDWOODS
Requirements in accordance with GOST 9462-88
Parameter, attribute The requirement
2 grade
1 Breed of wood all hardwoods
2 Nominal length, m from 4,0 up to 6,5 with gradation 0,5
3 Deviations from nominal length, m from +0,03 up to +0,10
4 Least diameter, cm from 12 up to 24
5 Diameter of the greatest knot or the stepson, cm 7
6 Heartwood, external mouldering rot and tobacco knots not allowed
7 Brown streak allowed without white spots and efflorescences
8 Depth of sapwood rot, shares of diameter of a butt-end 0,1
9 Thickness of a cutting of cracks (except for checks from shrinkage), shares of diameter of an end face 0,50
10 Depth of lateral cracks from shrinkage, shares of diameter of a butt-end 0,2
11 Length of face cracks from shrinkage not more than diameter of the top butt-end
12 Height of sweep, percentage from length of a log:
simple
 

2

complex 1
13 Depth of mechanical damages open bark pocket, scar and canker, cm the sum of the top end face of 0,1 diameters and half-difference of diameters in a place of damage and on the top butt-end
14 Height of knots (from bark), cm 2
15 Butt trimming not more than allowance on length


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