Factor of Safety

Factor of safety (FoS), also known as (and used interchangeably with) safety factor (SF), is a term describing the structural capacity of a system beyond the expected loads or actual loads. Essentially, how much stronger the system is than it usually needs to be for an intended load. Safety factors are often calculated using detailed analysis because comprehensive testing is impractical on many projects, such as bridges and buildings, but the structure's ability to carry load must be determined to a reasonable accuracy.

Many systems are purposefully built much stronger than needed for normal usage to allow for emergency situations, unexpected loads, misuse, or degradation.

Read more about Factor Of Safety:  Definition, Calculation, Yield & Ultimate Calculations, Choosing Design Factors

Famous quotes containing the words factor and/or safety:

    It is change, continuing change, inevitable change, that is the dominant factor in society today. No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.... This, in turn, means that our statesmen, our businessmen, our everyman must take on a science fictional way of thinking.
    Isaac Asimov (1920–1992)

    Love no man in good earnest, nor no further in sport
    neither, than with safety of a pure blush thou mayst in
    honor come off again.
    William Shakespeare (1564–1616)