Example: An exercise bike that can support 250 lb. Does the engineer find a large enough weight that deforms the bike, then take a fraction of that as the amount it can support?
In: Engineering
You can calculate the strength of the structure based on the material strength properties, shapes and configuration of the structural supports, and location of the load and then you apply a factor of safety to account for manufacturing defects and variances in material properties. If you calculate it can support 200 pounds with a factor of safety of 2 then you rate it for 100 pounds.
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