Loading is the foundation of a reliable PEMB design, because member forces, reactions, and governing design checks are driven directly by how dead, live, crane, snow, wind, roof live, and other loads are defined and applied. It is also one of the most influential factors in PEMB optimal design, since both safety and steel weight are directly dependent on the governing load cases and on how these loads are calculated, applied, combined, and distributed to the structural members.


Because of this direct dependency, the loading model is often the point at which designs become either unconservative or unnecessarily heavy. If certain code-required cases are omitted, simplified, or misapplied, the analysis may produce member demands that appear low, leading to lighter sections that are not reliable and not code-compliant. Conversely, overly conservative assumptions, incorrect load application, or inappropriate combinations can artificially increase demands, resulting in heavier member sizes and a design that is safe but uneconomical. Therefore, achieving an optimal PEMB design requires not only efficient structural configuration, but also accurate, code-consistent load calculation and load application.


This section summarizes the loading methodology implemented in MkaPEB, based on the applicable loading codes and standards. It also clarifies how MkaPEB generates the required load cases and applies them to the appropriate structural components, ensuring that design are driven by the correct governing demands rather than by incomplete or inconsistent loading assumptions.