Carrier calculated shipping for selling fabric

I tried setting up carrier calculated shipping for selling fabric yardage by the half yard, but it didn't calculate correctly and gave me a very high shipping calculation with the information in the attached file. I have it set up for depending on weight right now because I can't figure out how to set it up for calculated shipping with this kind of product, but I'd like to set up calculated shipping to get more accurate shipping rates. Is it possible to do so?