Seitlasten

SeitLasten is a German engineering term referring to lateral or side loads acting on a structure or component. The term combines Seite (side) and Last (load) and is used in structural and mechanical contexts to describe forces that act perpendicular to the primary vertical or longitudinal axis of an element. Lateral loads may originate from wind, seismic actions, hydrostatic or soil pressures against retaining elements, torsional effects from asymmetrical supports, or dynamic effects from machinery and traffic.

In structural design, SeitLasten contribute to bending moments about the strong axis and can induce shear, torsion, or combined stresses. They are evaluated as separate load components in a coordinate system (for example Sx and Sy) and are included in overall design through prescribed load combinations with vertical loads. Calculations can be static, using design peak values, or dynamic for wind and earthquake effects, often involving simplified methods or finite element analysis.

Practical design considerations include the need to account for lateral forces in frames, bracing systems, connections, and foundations. Lateral loads are governed by national and international standards and guidelines, and are treated in building and bridge codes with specific approaches for wind and seismic actions. In mechanical engineering, SeitLasten can arise from lateral forces on machine frames, cranes, conveyors, and other equipment, requiring adequate stiffening, anchorage, and vibration considerations.

Etymology: SeitLasten derives from Seite (side) and Last (load). The term is primarily used in German-language engineering literature and is commonly translated as lateral or side loads in international contexts.