A
1st grade (grade A)
Straight trunk, the following wood defects are allowed: knots, cracks with a diameter up to 1/20 of the corresponding diameter of the end, mechanical damage such as notches, splinters, chips, and wanes
Quality standarts
Timber
Straight trunk of fresh-cut without end checks, blue stain, internal rot, insect and ring cracks, without knots or branches, frost cracks, without double heart, centering.
B
2nd grade (grade B)
The following wood defects are allowed: slight trunk curve, sound open knots from 4 to 7 cm, sound rotten knots up to 3 cm, cracks except for lateral and end cracks from drying from 1/5 to 1/3 of the corresponding diameter of the end.
C
3rd grade (grade C)
The following wood defects are allowed: simple curvature with dimensions - the ratio of flexure deflection at the place of the greatest curvature to the total length of the log over 3% to 5%, sound open knots from 10 to 15 cm, cracks except for lateral and end cracks from drying from 1/3 to ? of the corresponding diameter of the end.
TECHNICAL CONDITIONS FOR TIMBER
- АWide face - completely clean.
- hWood piece height.
The four sides adjacent to face A must be at least half (up to 1/2 h) clean.
- ВBack face.
On back face B, as well as on sides adjacent to it, the following defects are allowed:
- —Knots - up to 50%
- Е1Sound knots - up to 20 мм
- Е3Black knots - up to 5мм
Not allowed:
- Е2Through knots
- Е4Heartwood.
TECHNICAL CONDITIONS FOR PALLETS AND PALLET PACKAGING.
- 01
General characteristics
- Stable in 4 directions, technological holes 100 mm.
- 02
Dimensions
- 800*1200 мм
- 800*1200 мм
- 800*1200 мм
- 800*1200 мм
- 800*1200 мм
- Pallets 800*1800, 800*2100, 800*2400 mm have 2 dividers in the middle (75*75 mm),
- 3 pieces lengthwise and 3 pieces widthwise.
- 03
Slats
- Material - softwood or birch. Moisture up to 20%, made from solid piece of wood.
- Slats dimensions: 20*25*800/1200 mm (thickness* width* length).
- Slats dimensions for support: 20*35*800 mm (for elements 420...635 mm).
- 04
Composition
Length (мм) Pallet size 800*... (мм) Number of elements in one row Number of spacers Assembly direction 420 1200 3 2 In the longitudinal direction 520-635 1200 2 3 In the longitudinal direction 710-970 1200 1 3 In the longitudinal direction 1020-1260 1200 1 3 In the longitudinal direction 1440-1500 1500 1 4 In the longitudinal direction 1820 1800 1 5 In the longitudinal direction 2120 2100 1 5 In the longitudinal direction 2440 2400 1 6 In the longitudinal direction - 05
Connection
- Pallets 800*1200 mm are connected by 2+2 tapes in each direction.
- Pallets 800*1500/1800 mm are connected with a minimum of 4 tapes.
- Pallets 800*2100/2400 mm are connected with a minimum of 5 tapes.
- Tying pallets the day before loading is not allowed.
- Wrapping in plastic is strictly prohibited.
- 06
Marking
- The attached card on the slat indicates:
- — Width
- — Length
- — Number of elements
- — Pallet number.
