margin of safety


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margin of safety

[′mär·jən əv ′sāf·tē]
(design engineering)
A design criterion, usually the ratio between the load that would cause failure of a member or structure and the load that is imposed upon it in service.

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.

margin of safety

The safety factor, expressed either in a percentage or a ratio, by which the ultimate failing load of components exceeds the design limit load.
References in periodicals archive ?
Yet we should see a definite increase in the margin of safety over time as we improve sales and grow the business.
Using the concept of the margin of safety when choosing a tracheobronchial (double-lumen) tube may help with efficient and efficacious placement of the tube.
In this sad tale, the decision to attempt the climb itself was disastrous, but the four factors just discussed eroded any margin of safety the member needed to survive.
The margin of safety concept goes hand-in-hand with the strong emphasis value investing places on capital preservation.
The EPA leaves a minimum of a tenfold margin of safety to account for differences between children and adults, Taylor said, so ``it's well within EPA's margin of safety.
After review of the (Water Management Plan) in conjunction with (advice letters), the commission concludes that the water supplies that the WMP demonstrated to be available provide an ample margin of safety to allow Valencia to serve new customers to the extent contemplated by (the advice letters),'' the ruling said.
In some cases, we're really pushing the margin of safety.
The scientists also suggested that other types of radiation, such as beta particles, might provide a greater margin of safety for treated vessels, nearby healthy tissue, and operating-room staff.