Variability of Norway spruce structural timber
Mechanical properties of timber depend on wood properties, of which density and knot size are among the most important. Wood properties are related to growth conditions, individual tree growth, and …
Machine grading of structural timber into strength class C40
Strength graded structural timber is an important product for the Norwegian sawmilling industry. In load bearing wood members, like floor joists, roof trusses and glulam beams it is required to …
Proposed changes to machine strength grading of structural timber in Europe
In Europe, machine strength grading of sawn timber for construction is governed by the harmonized European Standard EN 14081-2. A substantially changed revision of this standard has recently undergone Enquiry …