Glued laminated timber - pur-glue (glued laminated timber production - PUR-glue)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. The product 'glued laminated timber PUR-glue' is an engineered wood product. Glued laminated timber also called glulam is a type of structural engineered wood product comprising a number of layers of dimensional lumber bonded together with durable moisture-resistant structural adhesives. In the case of 'glued laminated timber PUR-glue' the adhesive used is polyurethane adhesive (PUR glue). Glulam optimizes the structural values of wood which is a renewable resource. Because of their composition large glulam members can be manufactured from a variety of smaller trees harvested from second-growth forests and plantations. Glulam provides the strength and versatility of large wood members without relying on the old growth-dependent solid-sawn timbers. As with other engineered wood products it reduces the overall amount of wood used when compared to solid sawn timbers by diminishing the negative impact of knots and other small defects in each component board. By laminating a number of smaller pieces of sawn timber a single large strong structural member is manufactured from smaller pieces. These structural members are used as vertical columns or horizontal beams as well as curved arched shapes. Glulam is readily produced in curved shapes and is available in a range of species and appearance characteristics to meet varied end-use requirements. Connections are usually made with bolts or plain steel dowels and steel plates. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.