A proposed development with a 962-foot-tall residential tower directly across the street from Chicago's Holy Name Cathedral was unveiled last week. One Chicago Square still needs approval from the Chicago City Council and will not begin construction until next summer even if it is approved. The taller tower would be Chicago's sixth-tallest building, if approved.
"The most unusual part of that design is that we’re using very high-strength concrete," Ron Klemencic, CEO and Chairman of Magnusson Klemencic Associates says. "Not so much for its strength, but for its modulus of elasticity. We need the stiffness. We’re specifying what is, in my experience the highest modulus of elasticity in Chicago, it’s 7,000 KSI modulus."