We were the Engineer of Record for the world’s tallest flagpole in Jeddah, Saudi Arabia. The pole is 171-m tall and has a base diameter of 4100 mm. The shell thickness is 45 mm. It supports a flag, 50 m x 33 m that weighs 600 kg. It was fitted with three tuned mass dampers that decrease significantly any cross wind vibration.
We also designed the tallest flag pole in the USA. It is located in Sheboygan, WI. It is 400-ft tall, 11’-0” diameter base, 1-3/8” thick shell. It is designed to withstand 120 mph winds that occur once every 1700 years. It has a design life of 50 years and it is also equipped with three mass dampers.
