Cross-Laminated Timber
―Wood innovation to create the future

CLT is an abbreviation for Cross-Laminated Timber, a wood-based material that is layered so that the fiber direction is orthogonal. It is a large thick board and is used not only for architectural structural materials, but also for civil engineering materials and furniture.
CLT originated in Switzerland around 1993 and spread across Western Europe, Japan, Asia, North America, and Oceania, and is used in a variety of buildings. In recent years, the use of CLT has been growing rapidly in various countries, such as the construction of high-rise buildings. In particular, it is used in detached houses that make use of the characteristics of wood-specific insulation and wall-type structures, apartments with middle-rise buildings, living areas of welfare facilities for the elderly, and hotel guest rooms.
In this exhibition, we will introduce the cutting-edge wooden construction technology called CLT.
※In order to prevent the expansion of the COVID-19 infection, the exhibition period and time are subject to change. Please refer to this page for the latest information.

Name of the exhibition

CLT - Wood innovation to create the future

Period

July 24, 2021 (Sat) - September 20, 2021 (Mon./holiday)

Venue

Takenaka Carpentry Tools Museum 1F Hall

Holding time

From 9:30 to 16:30 (admission until 16:00)

Closed days

Monday (or the next day if it is a national holiday)

Admission fee

700 yen for adults, 500 yen for large and high school students, free for junior high school students and younger, 500 yen for those aged 65 and over (including Permanent exhibition viewing fee)

Sponsorship

Takenaka Carpentry Tools Museum, Swiss Federal Institute of Technology Zurich

Sponsorship

Japan CLT Association, Takenaka Corporation, Meiken Kogyo Co., Ltd., Pius Shura, Shiriga

Sponsorship

Ministry of Land, Infrastructure, Transport and Tourism, Ministry of the Environment, Forestry Agency, Ministry of Economy, Education and Research, Swiss Federal Ministry of Economy, Trade and Industry, Swiss Embassy in Japan, and Japan International Exposition Association 2025

Cooperation

VUILD Co., Ltd., Tottori CLT Co., Ltd.

Supervising

Patrick Fleming (Zurich, Swiss Federal Institute of Technology), Mikio Koshihara (Institute of Industrial Science, The University of Tokyo)

Trees and Nature Considered by CLT
CLT is used for construction by making a large cross section using small curved materials that have not been used much before as an effective use of forest resources. In other words, it is a wood material that enhances performance and utilizes it by increasing the cross section. By using CLT, it is possible to contribute to the natural environment.

CLT made of woodwork
In Japan, since ancient times, there has been a culture that combines wooden boards and combines trees. Such processing was a carpenter's craftsmanship, but recently it has become possible to process traditional fittings even in machining. A pavilion made by forming a board using a 36mm CLT, the thinest and lightest amount in Japan. No iron material such as screws or special equipment is used.
Photo: CLT Pavilion Shooting: Shunto Kurobe

CLT Architectural Model Exhibition
CLT architecture with a new architectural structure design, such as a hybrid of wooden and heterogeneous structures. Seeing with a model is the easiest way to understand. In this exhibition, we will exhibit the first CLT house, various CLT architectures in Japan, and architectural models of the latest urban wooden examples.

1 What is CLT?
Large and thick boards require trees over 1000 years old to be obtained from the natural world. In Japan's long history of wooden architecture, wooden architecture using thick plate surface materials such as CLT is an unexperienced building. In addition to easy-to-understand technical explanations, you can also see the differences between Western Europe and Japan in samples.

2 The Road of CLT - Development of CLT started in Switzerland
The technology of CLT, which is described as Austria's development, actually started several years ago in Switzerland and Germany. In this exhibition, we will introduce the early development of Switzerland, Germany and Austria, the first residential building, and the subsequent global trend.

3 CLT Development Overview of CLT Development in Japan
CLT came from Western Europe, but since the circumstances surrounding architecture are different from Japan, it created a unique flow of CLT architecture that blends with Japanese wooden culture. A look at the history of its development.

4 Let's enjoy CLT! Possibilities of CLT not only architecture but also architecture
CLT is not just a technology for architecture. Combining boards and boards, folding boards like origami, may not be found in woodwork so far. We will introduce exhibits that are exciting to pick up and play.
Photo: CLT wooden box made by machining (koyart: Unmanned vegetable sales office)

5 Create the Future-CLT's cutting-edge circumstances
The latest examples of CLT are introduced from Takenaka Corporation. Advanced technology has made it possible to make larger, higher, and non-combustible, which were difficult in conventional wooden buildings. We aim to create a carbon-neutral and sustainable society by making effective use of domestic timber.