factor of safety


noun

the ratio of the maximum stress that a structural part or other piece of material can withstand to the maximum stress estimated for it in the use for which it is designed.
Also called safety factor.

Origin of factor of safety

First recorded in 1855–60

British Dictionary definitions for factor of safety

factor of safety

noun

the ratio of the breaking stress of a material or structure to the calculated maximum stress when in use Also called: safety factor