Legacy Union Tower Pyramid

The Legacy Union Bank of America Tower sits adjacent from the Bank of America Stadium in downtown Charlotte. One of the design considerations for this building was to have a very large pyramid structure top out the building that would light up in the evening.

Hot-dip galvanizing was chosen to protect the beauty and integrity of the uniquely designed structural steel used in the tower’s roof-top pyramid. The result is a lustrous finish and protection against corrosion that will last a lifetime.

Legacy Union is a 10-acre, mixed-use development between Tryon Street and Bank of America Stadium that will will be home to a mix of Class A office space, retail and other development.The first phase of Legacy Union features a 33-story office tower of stone and glass, which was set for completion in the first quarter of 2019. A glass-and-steel pyramid will cap the building, making it a landmark on the Charlotte skyline.

A galvanized coating was chosen to protect the beauty and integrity of the steel used in the tower’s roof-top pyramid. 101.32 tons of uniquely designed structural steel hollow tube elements were were carefully dipped in molten zinc. The result is a lustrous finish and protection against rust and corrosion that will last a lifetime, even in constant exposure to the elements.

The project was delivered to the job in fourteen different sequences that span over a two month period. The project was then erected at the project site that took an additional two months where the parts were bolted together first and then flown with a tower crane to the top of the building. This final piece of the pyramid was lifted into place as shown in the video above.

Coating Thickness

Desc	Read. 1	Read. 2	Read. 3	Read. 4	Read. 5	Avg.
Section One	5.3	6.0	5.8	4.8	4.9	5.36
Section Two	5.1	6.6	4.6	6.7	8.1	6.22
Section Three	5.6	5.9	5.6	6.0	6.1	5.8

Details

Award Class

Newly Complete

Award Sectors

Building & Architecture

Environment

Industrial/Urban

Location

Charlotte, NC United States

Reasons for Galvanizing

Aesthetics, Corrosion Performance, Quality of HDG, Sustainability

Components Galvanized

All of the pyramid components were galvanized. All of the large parts were bolted together at the top of the building to form the large pyramid structure.