Pittsburgh Area Buildings - U.S. Steel Tower

The largest building to grace the skyline of the city of Pittsburgh is the U.S. Steel Tower.A Its construction was completed in 1970 and consists of 64 floors and 2,300,000 square feet of office space.A It contains over 44,000 tons of structural steel and has about an acre of office space per floor.A The original name of the building was the U.S.

construction building green buidling