EPiC database - Glued laminated timber (glulam)

This material is part of the free Environmental Performance in Construction (EPiC) Database. The EPiC Database contains embodied environmental flow coefficients for 250+ construction materials using a comprehensive hybrid life cycle inventory approach.Glued laminated timber or glulam is a structurally engineered timber product produced from large strips of graded timber that are bonded together. Glulam has a high degree of dimensional stability, and a high strength to weight ratio compared to steel. Timber members are individually selected for lamination, to maximise strength and performance. Because of this, glulam can be manufactured with increased strength in particular areas, to compensate for areas of high stress in a structure. Synthetic resin glues are typically used as a binding agent, commonly in conjunction with finger joints to increase joint performance. Glulam can be used for long structural members, which exceed the capabilities of standard timber. It is also used for columns, rafters, trusses and curved beams.

本材料系免费环境性能在建筑领域（Environmental Performance in Construction，简称EPiC）数据库的一部分。该EPiC数据库包含了超过250种建筑材料的本体环境流动系数，采用了一种全面的混合生命周期清单方法进行编制。胶合层积木（Glued laminated timber，简称glulam）是一种结构工程木材产品，由大型分级木材条带通过合成树脂胶粘合而成。胶合层积木具有极高的尺寸稳定性，与钢相比，其强度重量比亦更为优越。木材部件经过单独挑选，以实现层积的最大强度和性能。因此，胶合层积木能够针对特定区域进行增强，以补偿结构中应力较高的区域。通常，合成树脂胶作为粘结剂，常与指接接合一同使用，以提升接合性能。胶合层积木适用于长结构部件，其性能超越标准木材。此外，它还用于柱子、桁架、屋架和曲线梁等建筑构件。