What is the term used to describe the non-parallel systems in structural engineering?

The term "Non-Parallel Systems Irregularity" is used in structural engineering to describe situations where the structural systems do not follow a parallel alignment, leading to potential irregularities in how loads are distributed and managed within the structure. This is particularly important when considering the behavior of the structure under various load conditions, such as seismic or wind forces.

Understanding the implications of non-parallel configurations is vital for engineers to ensure stability and performance of the structure. These irregular systems may lead to variations in stress distribution, making it necessary for engineers to analyze them more rigorously to prevent failure or excessive deformation.

Other terms like "Non-Uniform Systems," "Asymmetric Load Distribution," and "Irregular Load Patterns" do imply variations in load or structural configurations but do not specifically encapsulate the idea of non-parallel arrangements in a way that aligns with established terminology in structural engineering. Therefore, the specific focus on irregularity due to non-parallel systems makes "Non-Parallel Systems Irregularity" the most accurate choice.