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Probabalistic failure analysis is certainly something engineers do for determining system risk, else how do you determine how many redundant components to inclu
by greesil 5y ago
Probabalistic failure analysis is certainly something engineers do for determining system risk, else how do you determine how many redundant components to include? I seems like having a higher safety factor just means having a lower probability of failure, and these two concepts are very compatible.
- wiredfool 5y agoThe probabilistic failure analysis (as practiced in LRFD) is essentially a pencil sharpening exercise where the margins can be reduced a bit. For example, some loads are better known than others (e.g., dead load vs live load), some materials have better QC or a more uniform quality than others (think concrete vs steel). The end result is generally in the ballpark of the old factor of safety, but might be up to 10% less in some cases.