His developments are among today's "conventional" systems for skyscraper design.
The tower itself is considered by many to be a masterpiece of the International style of skyscraper design.
Chicago initially led the way in skyscraper design, with many constructed in the center of the financial district during the late 1880s and early 1890s.
And he set out to do no less than change the principles of skyscraper design that the Eastern club had written down like laws.
Nice to see an "inner working" look at skyscraper design.
By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction.
It was made in the minimalist and the modernist skyscraper design.
He introduced a new structural system of framed tubes in skyscraper design and construction.
The tower is an achievement in minimalist, modernist skyscraper design.
Johnson's forward thinking brought about a new era in skyscraper design.