Betonirunkoiset

Betonirunkoiset is a Finnish term used to describe objects or structures whose primary structural skeleton or body is made from reinforced concrete. The expression is typically used in architectural, civil engineering, and industrial design discussions to contrast with steel- or timber-framed constructions. As a descriptor rather than a standardized technical class, its exact meaning can vary depending on context.

In use, betonirunkoiset buildings or components refer to a concrete skeleton that bears most of the load, with reinforcement bars (rebars) and concrete elements forming a cohesive frame. The term can apply to large public buildings, housing blocks, or industrial facilities where a solid, monolithic construction approach is chosen. It may also appear in discussions of machinery or equipment that rest on heavy concrete bases or enclosures designed to enhance stability and vibration damping.

Key characteristics include high rigidity, good fire resistance, and substantial thermal mass from the concrete. These benefits often come with drawbacks such as considerable weight, higher material and transport costs, longer construction times due to curing, and more complex handling in tall or slender designs. In seismic regions, concrete frames require careful detailing and connections to ensure ductility and performance during earthquakes.

Construction and lifecycle considerations involve formwork or precast elements, reinforcement detailing, and curing practices. Maintenance focuses on preventing cracking and moisture ingress, which can affect durability and reinforcement. Retrofitting or strengthening betonirunkoiset structures can be feasible but may entail significant intervention.

See also: reinforced concrete, concrete frame structures, building construction, structural engineering.