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Hello, I'm a second year civil engineering student, I'm interested in this program to improve myself, can I please get your comments on whether my design is safe and economical? ( pavement weights should remain as entered, assuming that snow and wind loads will affect the system as little as possible, it has a minimum section Crosses can be added) I know that I can't get definitive results because the information I have given is little, but my aim is to learn a few things in the light of different interpretations, excuse my inexperience, I'm open to all kinds of comments...