The idea of a "factor of safety" has gone away in structural engineering to be replaced by a similar concept of "factoring" (look up allowable stress design, ASD, and load resistance factor design, LRFD, for more information). Factors are based on statistical analysis and criticality of failure.
No combination of factors approaches anything near what you would call a safety factor of 6. Typically things are designed with an analogous safety factor of 2.5 or less.
This isn't to say that higher factors of safety aren't possible, it's just that they're not worthwhile. We can design for anything. We just can't pay for it most of the time.
No combination of factors approaches anything near what you would call a safety factor of 6. Typically things are designed with an analogous safety factor of 2.5 or less.
This isn't to say that higher factors of safety aren't possible, it's just that they're not worthwhile. We can design for anything. We just can't pay for it most of the time.