About this 3D model

This is the third example I wanted to provide to the students. I wanted to show them that different designs yield different results. This one printed just under 4 hours with the standard settings on Makerware. This came out perfectly! No problems at all. *I did not add a support beam on the second column on both sides simply because I was planning on laying a small road in between so the students could test various loads with different vehicles crossing their bridge. This can be altered very easily however for more stability.