safety factor

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safety factor

[′sāf·tē ‚fak·tər]
(electricity)
The amount of load, above the normal operating rating, that a device can handle without failure.
(mechanics)
(ordnance)
Increase in range or elevation that must be set on a gun so that friendly troops, over whose heads fire is to be delivered, will not be endangered.
Overload factor in design to ensure safe operation.

factor of safety, safety factor

1. The ratio of the ultimate stress of a structure or pressure vessel to the design working stress.
2. The ratio of the ultimate breaking strength of a member or piece of material or equipment to the actual working stress or safe load when in use.

safety factor

The ratio of the maximum load a structure is designed to withstand to the maximum load it will be subjected to during a normal operating regime.
References in periodicals archive ?
The geometry was optimized to have an overall safety factor of 3 for strength while having acceptable stress life calculated with a Modified Goodman curve.
(1) The point safety factor of a layered rock mass, which was established based on a transversely isotropic mechanical model, is the smallest value between the point safety factors of the interlayered rock and the bedding plane.
Table 4 shows that water pressure increases with cover depth, while the safety factor of the mean value and the reliability probability in various failure modes of the floor decrease and the failure probability increases.
[[phi].sub.uni] and [c.sub.uni] were obtained with different b and [u'.sub.[tau]] values and substituted into formula (10) to calculate various soil slope safety factors [F.sub.s], as shown in Figure 6.
In determining the number of geotextile reinforcements required for the embankment, the common reference used is the safety factor value.
Different safety factors of the UPM pedestrian environment were analyzed to show the perceived importance frequency.
In 1985, Bill Coad published an article that addressed the loss of "inherent safety factors" with the replacement of simplified hand load calculations with detailed and specific computerized calculations.
In the analysis of slope stability, the primary task is to calculate the safety factor of the slope [1-5].
Hence, a method of linking safety factors and the target probability of failure is proposed in this study, in which ASET and RSET are described by functions of a set of uncertain input parameters.
Apply a safety factor of two and the pin diameter is still less than 0.15 inch in diameter.
"Every system shipped from our factory is actually load tested to 150% of rated capacity providing our customers with the greatest safety factors in the industry."

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