Engineered Wood Products Ewps

The readily available sawn sections of softwood are limited in size and quality. The largest section sizes available are 75 mm thick x 225 mm wide and at most 5 m in length. Any larger section sizes would suffer from both conversion and seasoning defects. EWPs are developed to overcome the limitations of sawn timber and are produced, in combination with adhesives, in a variety of forms:

• dried thin planks of wood are glued together to form glued-laminated timber or glulam;

• veneered, by peeling logs, and bonded together in different layouts to produce plywood or laminated veneer lumber (LVL);

Table 1.4 Customary target sizes of structural timber*

Sawn thickness


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