Cross-laminated timber: structural principles

Cross-laminated timber: structural principles

Date Published

12 August 2022

Document Type




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Cross-laminated timber (CLT) offers opportunities to use timber in taller structures with wider spans where designers would traditionally have used materials such as steel, concrete and masonry by default. As with any new structural material, it is essential that designers understand how to achieve CLT’s potential while respecting its limitations.

This Wood Information Sheet (WIS) is an overview of the subject with signposts to more detailed sources that are listed at the end.

Key Information

Eight key connection types possible between CLT panels used in a typical building are highlighten.

Fire resistance of CLT buildings can be safely established by using Supply > Manufacturer;declared product data and by following guidance in standards and published research.

Where walls are bedded on concrete, sole plates are generally unnecessary unless there is a risk of standing water during construction. A sole plate could, however, help to position the wall panel and can be prepared in advance.