Structural engineering theory: Difference between revisions

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==Strength==

[[Strength of materials| per square inch psi in the United States Customary Units system).

[[Strength of materials|Strength]] depends upon material properties. The strength of a material depends on its capacity to withstand axial [[stress (mechanics)|stress]], [[shear stress]], bending, and torsion. The strength of a material is measured in force per unit area (newtons per square millimetre or N/mm², or the equivalent megapascals or MPa in the SI system and often pounds per square inch psi in the United States Customary Units system).

A structure fails the strength criterion when the [[stress (mechanics)|stress]] (force divided by area of material) induced by the loading is greater than the capacity of the structural material to resist the load without breaking, or when the [[Strain (materials science)|strain]] (percentage extension) is so great that the element no longer fulfills its function ([[Yield (engineering)|yield]]).