Glued laminated timber

Date Published

11 August 2022

Document Type

Category

Audience

Author

TRADA
Summary

Aesthetically attractive structural timber components of large sizes and complex shapes can be fabricated from smaller sawn sections (laminations) by the process of glued lamination, known as ‘glulam’. Glulam is a high-performance product for structural Design > Engineer;ing applications produced in factories with robust production control systems.

Glulam often catches the eye of designers for use in specialist buildings. However, glulam can be used for most loadbearing structures, especially where visual appearance is important and where long spans or curved members are crucial.

This Wood Information Sheet (WIS) covers an array of topics relating to glulam including strength-to-ratio details, structural forms and a list of some of the most common sizes of glulam.

It follows the Eurocode 5 method of design.

Key Information

Glulam is manufactured from layers of parallel timber laminations.

Most structural glulam sold in Europe must comply with EN 14080 and be CE marked in conformity with a Declaration of Performance.

Glulam is generally more stronger than the timber from which it is made because defects such as knots, splits and sloping grain are randomly distributed throughout the component.

Case studies

The Three Peaks of Yorkshire – Ingleborough, Whernside and Pen-y-ghent, – are riddled with underground passages and caves, of which one of the most famous is White Scar Caves.

The Macallan, the distinguished single malt whisky, has been produced in Speyside since 1824, and its new building is set into the sloping contours of the estate grounds.