A topping out ceremony is held when a construction project reaches its maximum height. The ceremony takes place as the final piece of iron is hoisted into place with a small tree and an American flag attached. The piece of iron is painted white and is signed by the ironworkers and any dignitaries present. The symbolism of the tree holds different meanings.  Noted meanings include the workers’ respect for nature, new growth, and a safe build. Native Americans believe that no man-made structure should be taller than a tree, and thus a tree was placed at the top of a topped-out building.

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