Force per unit area is called Stress.
visual stress grading machine stress grading structural grading
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structural, fatigue, flow. residual,and thermal
arch
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An effect of all forces acting on a structure at the same time.
Structural timbers are those timbers used in the construction of a building that are "load bearing". They are the timbers placed under stress by and that support the weight of the building.
structural stress = effect of all the internal and external forces acting on a structure over a long period of time. example: if you place an abnormally large book on the middle of a bookshelf, the shelf may bend. The bend on the shelf is a sign of stress. When the book is removed the shelf may go back to its original shape.
Gregg W. Baumann has written: 'Linear structural stress analysis of a hull girder penetration and a short longitudinal bulkhead using finite element modeling' -- subject(s): STRUCTURAL ANALYSIS, SHIP HULLS, STRESS ANALYSIS
DITTO
Govind Rengarajan has written: 'Improved assumed-stress hybrid shell element with drilling degrees of freedom for linear stress, buckling and free vibration analyses' -- subject- s -: Dynamic structural analysis, Buckling, Degrees of freedom, Shells - Structural forms -, Free vibration, Stress analysis, Finite element method
A factor of safety against yield is applied to design stress Yield Stress/ Design Stress = Factor of safety The factor of safety varies for different industries; 1.5 is used in structural steel design for buildings; 1.25 or even 1.1 for aircraft/space systems