Safety factor is the structural strength divided by the minimum structural strength required. The greater the safety factor, the lower the likehood of structural factor and the more stress cycles the structure can take. Small structures often have large safety factors because of the minimum gauge that can be crafted. Very thin sheets often cost the same or even more than thick sheets because of the tighter tolerances required, so sheets are often chosen that are thicker than necessary. Generally, the greater the safety factor, the lower the cost of crafting, designing, handling and testing the structure; but, this is a vague relationship which is not modeled in these scripts. The safety factor is used to calculate the effective tensile.
effective tensile = tensile dimensionality * tensile energy / safety factor / ( 1.0 + 0.13 * log( reusability ) )
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