CLT Explained

Cross Laminated Timber (CLT) is an engineered wood. A multiple-layer wooden panel is made by gluing together layers of solid-sawn timber. Each layer is oriented perpendicular to adjacent layers and glued on the wide faces of each board symmetrically so that the outer layers have the same orientation. An odd number of layers are being used in the lay-up.
The physical properties of the timber change in the direction in which the force is applied. By gluing layers of wood at right angles, the panel can achieve better structural rigidity in both directions and has very strong capabilities.

CLT can also be used for beams and pillars. This is called Glulam, a product with all laminations orientated in the same way. Glulam can have enormous lengths and keep a relatively slim diameter.

To form a glulam component, dimensional lumber wood laminations are positioned according to their stress-rated performance characteristics. The laminations are joined end to end, allowing for long spans. The laminations’ grains parallel the member’s length to improve strength and stress resistance. It gets the strength and fire protection of a heavy timber structure without having to cut down a huge tree. Glulam is 2/3rd the weight of steel and 1/6th the weight of concrete. It also can be bent and it’s usually connected with steel plates and bolts.

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