Liukastuu

Liukastuu is a Finnish term referring to slipperiness or the tendency of a surface to cause slipping. In safety contexts, it describes the reduced friction between a shoe or foot and the surface, which increases the risk of losing balance and falling.

Etymology: the word derives from liukas, meaning slippery, with the suffix -uu forming a noun of state.

Causes and context: Slipperiness results from moisture, ice, frost, or wet surfaces, as well as spilled liquids, oil or grease, wax residues, and contaminants. It can also arise on uneven or worn floors and from low surface roughness. Temperature, humidity, surface texture, and movement affect how slippery a surface is, making risk variable across environments such as sidewalks, stairs, kitchens, and industrial floors.

Measurement and standards: Various tests and standards assess slip resistance, including pendulum devices and tribometers to evaluate flooring and footwear. Practically, facilities and products may be rated for slip resistance using recognized methods to guide safety decisions and maintenance schedules.

Prevention and safety: Reducing liukastuu involves keeping surfaces dry and clean, using anti-slip coatings or mats, and applying grit or salt in icy conditions. Wearing footwear with good tread and non-slip soles is important, as is proper housekeeping in workplaces to minimize contaminants. In winter, de-icing and timely maintenance of stairs and walkways help maintain traction and prevent falls.

See also: slip and fall, friction, surface safety, floor maintenance, traction.