In the identification mark on a CFS member “362S125-30 33K G40,” the number 30 implies that
a. it is a 30-ft-long member.
b.it is a 30-in.-long member.
c.the thickness of steel used for the member is gauge 30.
d.the thickness of steel used for the member is 30 mil.
e.none of the above.
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