Topping out

Builders' rite when the last beam (or equivalent) is placed

In building construction, topping out is a builders' rite traditionally held when the last beam is placed atop a structure during its construction. Nowadays, the ceremony is often parlayed into a media event for public relations purposes. It has since come to mean more generally finishing the structure of the building, whether there is a ceremony or not. It is also commonly used to determine the amount of wind on the top of the structure.

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