Ylälevy

Ylälevy is a Finnish term that translates to "upper plate" or "top plate." In construction and engineering contexts, it refers to a structural element situated at the uppermost part of a wall or frame. This component typically serves to distribute vertical loads from the roof or upper floors evenly across the supporting walls below. It also acts as a connecting piece, tying the tops of wall studs or columns together, thereby enhancing the overall stability and rigidity of the structure.

The material of the ylälevy can vary depending on the application. Common materials include wood, such as dimensional lumber, or steel in larger or more industrial structures. Its dimensions are determined by the load it needs to support and the spacing of the vertical elements it rests upon. In timber-framed construction, the ylälevy is often a continuous piece of lumber that runs along the top of the wall, with joists or rafters resting on it. In masonry construction, a reinforced concrete ylälevy, known as a bond beam, is often used to tie the masonry together and provide a level bearing for the roof structure. The correct installation and design of the ylälevy are crucial for the structural integrity and longevity of a building.