Burj Khalifa with Smith's attempts to make the crown more slender. The building opened on 4 January 2010. The tower was designed by Skidmore, Owings and Merrill (SOM), which also designed the Willis Tower (formerly the Sears Tower) in Chicago and the One World Trade Center in New York City. Burj Khalifa uses the bundled tube design of the Willis Tower, invented by Fazlur Rahman Khan. Due to its tubular system, proportionally only half the amount of steel was used in the construction, compared to the Empire State Building. Khan's contributions to the design of tall buildings have had a profound impact
Salmon Tower Building was 34,309 square feet. It is currently owned by Tishman Speyer & Silverstein Properties. In 1980 Tishman Speyer & Silverstein Properties collaborated on a $25 Million renovation. Salmon Tower Building The Salmon Tower Building is a 31-story edifice located at 11 West 42nd Street in Manhattan which was designed by Albert J. Wilcox. It was completed by early 1928 at which time its interior was more than 50% leased. Salmon Tower Building was located just east of the Aeolian Building. The firm of Walter J. Salmon, Sr. which erected the edifice, was known as 11 West 42nd Street, Inc. It