Structural calculations is a specialized skill that involves applying mathematical and engineering principles to analyze and predict the behavior and performance of building structures, such as buildings, bridges, and tunnels. This involves calculating the loads, stresses, and strains that a structure will be subjected to, and designing and evaluating structural components to ensure that they can withstand these forces, while also meeting safety and other design criteria. Structural calculations are essential to ensure the integrity, stability, and safety of structures, and require advanced knowledge and expertise in structural engineering and mathematics.