Petroleum Coke Storage — In St. Croix, US Virgin Islands, Hovensa Coker Storage, Bechtel Corp. has two 254′ × 127′ Monolithic Domes. With a capacity of 40,000 metric tons, they’re the world’s largest petroleum coke storages. After this photo was taken, an equipment tower and conveyor system was set on top of the domes. The weight allowance was one million pounds.
Strength testing the Monolithic Dome at BYU Laboratories. The sand bags represent the amount of weight previously thought to be the maximum load this dome could take. The addition of the forklift did nothing. They were ultimately unable to break the shell by overloading it and had to take it apart with jackhammers.