Massiivipuunkäyttö

Massiivipuunkäyttö, also known as mass timber construction, is a building method that utilizes large, prefabricated wooden components to create structural elements. These components are typically made from solid wood, such as glulam (glued laminated timber), CLT (cross-laminated timber), or laminated veneer lumber (LVL). Mass timber allows for the construction of larger and taller wooden buildings than traditional timber framing.

The production of mass timber involves layering and bonding wood boards or planks together with adhesives under pressure. This process creates strong, stable, and dimensionally accurate structural elements that can be manufactured off-site and then assembled quickly on location. The use of engineered wood products in mass timber construction enhances its structural performance and fire resistance compared to traditional sawn lumber.

Massiivipuunkäyttö offers several environmental benefits. Wood is a renewable resource, and sustainably managed forests can provide a continuous supply. The production of mass timber generally requires less energy than that of steel or concrete, and wood sequesters carbon dioxide during its growth, effectively storing it within the building materials.

In terms of application, mass timber is suitable for a wide range of buildings, including residential homes, apartment buildings, offices, schools, and even some public facilities. Its modular nature and prefabrication lead to faster construction times and reduced on-site waste. Fire safety is a key consideration, and mass timber buildings are designed with specific fire resistance ratings, often through charring layers that protect the inner wood structure.