Tragzahl

Tragzahl is a German term used in engineering and related disciplines to denote the carrying quantity or load-bearing capacity of a component, structure, or system. It refers to the maximum load that can be safely carried under specified conditions, and it is determined by factors such as material strength, geometry, support conditions, and safety factors. The concept is central to designing components that must bear weight or forces without excessive deformation or failure.

In civil and mechanical engineering, the Tragzahl is used to express the limit beyond which a element would fail or no longer meet serviceability requirements. Designers compare expected loads with the Tragzahl to ensure an adequate safety margin and to comply with code requirements. The term is related to, but not always interchangeable with, Traglast (load capacity) and Tragfähigkeit (carrying ability). Depending on the field or standard, the Tragzahl may refer to different load types, including static, dynamic, or ultimate loads, and it is always specified together with load cases, material properties, and safety factors.

In contemporary German technical literature, Tragzahl is encountered mainly in older texts or in regionally specific usage. Many modern standards prefer more specific terminology such as Traglast or zulässige Traglast to describe permissible loads. The numerical value of a Tragzahl is established through a combination of analytical calculation, material testing, and compliance with applicable design codes and safety requirements.