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Austrian Welde Plywood (Poplar & Bich) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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WELDE PLYWOOD
The plywood for the building industry "Welde Film Robusta" is produced according to the European Standards (EN).
Sizes
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Name of Defects |
Norms of permittance |
|||
Extra quality |
Standard |
Economy |
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Panel squaredness |
Permitted up to 1 mm for each linear meter of panel edge |
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Color variation |
Permitted |
Permitted |
Permitted |
|
Lower paper bond strength and markings of face/core defects on the paper |
Permitted for up to 15 mm for knots and 5 mm for splits for total of 2 per sqm. |
Permitted for up to 25 mm for knots and 10 mm for splits for total of 5 per sqm |
Permitted |
|
Missing paper |
Not permitted |
Up to 1% of total surface |
Up to 2% of total surface |
|
Surface swelling |
Not permitted |
Not permitted |
Permitted up to 1 per sqm with diameter up to 50 mm |
|
Criteria |
Veneer combination value |
|
Poplar/poplar |
beech/poplar/ beech |
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1 |
Density, kg/m3 |
450-500 |
550-670 |
2
|
Bending module of elasticity, N/mm2: |
4900 |
8000 |
- Perpendicular to the grain Е ┴ |
|
4000 |
|
3 |
Resistance to bending in N/mm2: |
40 |
65 |
Resistance to bending in N/mm2: |
30 |
48 |
|
4 |
Resistance to friction |
350-400 |
350-400 |
Important!
Film-faced plywood is designed to be used 30-50 times.
The effective multiple and cost-saving use is utterly dependent on the proper panel handling and care!
Based on the experience, Lessoplast specifies the following recommendations for plywood application which is a guarantee for reliable use under conditions of maximal loading in the building industry.
No |
Support distance, m |
Thickness of film-faced plywood, |
Max. recommended thickness of the reinforced concrete slab,cm |
1 |
0.50 |
21 |
16 – 20 |
2 |
0.50 |
18 |
14 – 16 |
3 |
0.625 |
21 |
12 – 14 |
4 |
0.625 |
18 |
< 12 |
Note: Data refers to poplar plywood.
In the building industry - for shuttering.
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