Can someone please point a semi green user to where to info on properly setting up cut lists? We have SW2015 Professional.

I am trying to set up drawings so that either the BOM or Cut list will give a total of qty of inches of, say, 2" sq. tubing or 1" dia steel or U-Channel is contained in the assembly, which consists or primarily weldments and hardware parts.

Any help will be appreciated, greatly. Thanks!