Deliverable D3.1.2 Key products of the forest-based industries and ...

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Key products of the forest-based industriesand their demands on wood raw material propertiesTable 4c: Important relationships between properties of wood and solid-wood products (NEEDS COMPLETING AND CHECKING)Reaction WoodKnot sizeKnot arearatioDeadknotsResin* Density Stiffness Strength AppearanceDimensional StabilityDurabilityProductBatten - - - ? - + + + + + +Fencing - - - - = = + + = + +Pallet - = = = = = = + = = =OSB N N N N N + + + + = +Particleboard N N N N N + + + + = + +Veneer ? - - - - ? ? ? ? ? ?Joinery- + = = - - = = = + + =(Furniture)Joinery- = = - - = = = + + +(Windows/Doors)LVL - = - = ? + + + = + =Glulam - = - = ? + = + =Cladding - = = - - = = = + + +Rail Ties= = = = = + = + = = +(Sleepers)Piling = - - - = + + = = +MDF N N N N N N + + + + + = + +LegendCorrelation CodeStrong positive +Weak positiveNeutral =Weak negative -Strong negative -Not Applicable N?Needsdefining* "Resin" relates to natural tree resinInternalBondSurfaceSoundness26
Key products of the forest-based industriesand their demands on wood raw material propertiesTable 4d: Log Types by Properties for Solid-Wood Chain (values in red are preliminary assessment ofminimum requirements. This needs updating with expert advice from everyone and particularly toavoid inconsistencies with Table 4a)Log Type:Properties: No absolute values.Need to be decided for each caseStem Size > 16 cm top diameterStraightness < 1cm in 1m deviationIGrain Angle < 5 degsKnot Size < 5cmAppearanceI- As for I but 50 cm top diameter >stem size> 16cm top diameterStem Size > 20 cm top diameter3cm in 1m deviation < Straightness < 1cm in 1m deviationIIKnot Size < 5cmLive KnotsAppearanceAll II plusII+Permeable to treatment or Durability moderate durabilityKnot Size < 1cmIIIAppearanceHardnessIII+III plus 50 cm >Stem Size> 20 cmIII butIII-1cm < Knot Size < 2.5cmLive KnotsPermeable or Durability moderately durableIVGrain Angle < 5 degsReaction Wood Straightness >Reaction Wood
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