Question$-2$: Consider that the load causing failure on a structure is $+-31\mathrm{.}2$ percent, and the

maximum load is known within $+-10\mathrm{.}5$ percent. If the load causing failure is nominally $2200$

lbf$.$ Calculate the design factor. If the material has a strength of $25$ kpsi and length of the

rod is $6$ inch, determine the minimum volume of the rod.