I worked on a building project in Minneapolis where the structure had a 2 -story, cross walk type structure that cantilevered out the side of the building 175 feet. After hours one night I took one of the bolts they used on the gusset connecting the "bridge" (cross walk) to the main building structure. The bolt I have is about 2'0" long, the main shaft is about 3" in diameter and it weighs about 60 lbs. They used nearly 400 of those bolts on the structure. It was a pretty incredible project to work on.
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