mannubhai Started The Discussion:
please explain what is safety factor and how to calculate it with examples
Safety factor calculation

material strength /design load

for example safety factor of scaffolding is 4
this means ant component of scaffolding should be able to withstand 4 times the load applied

safety factor of man lift basket is 10

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 ) )

Thanks for....
pls. go through the following link for more details - (Factor of safety - Wikipedia, the free encyclopedia) at


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