860-880 Lake Shore Drive Apartments vs Kluczynski Federal Building

Comparing the 860-880 Lake Shore Drive Apartments and the Kluczynski Federal Building is particularly interesting because they share the same skyline in Chicago, IL, and were both designed by Mies van der Rohe. However, they were completed more than 24 years apart.

This offers a unique perspective on how the architect's style and the city's architecture evolved over time.

The Kluczynski Federal Building is clearly the larger tower of the two, both in terms of height and number of floors. It rises to 561ft (171m) with 42 floors above ground, while the 860-880 Lake Shore Drive Apartments reaches 269ft (82m) with 26 floors above ground.

Kluczynski Federal Building also offers more total built-up area, a total fo 1,200,003 sqf (111,484m²), which is about 466,981 sqf (43,384m²) more than what the 860-880 Lake Shore Drive Apartments offers.

Of course, each project may have faced different briefs or regulatory constraints, which we don't really know about and could also explain the outcome.

Both the 860-880 Lake Shore Drive Apartments and the Kluczynski Federal Building were designed in line with the aesthetic conventions of the International Style style.

The Kluczynski Federal Building was designed at a moment when the International Style style was already in decline, making it more of a lingering expression of the movement. In contrast, the 860 880 Lake Shore Drive Apartments was built when the style still carried greater cultural weight.

The 860-880 Lake Shore Drive Apartments is primarily residential, while the Kluczynski Federal Building is primarily governmental.

The 860-880 Lake Shore Drive Apartments offers 248 residential units.

Both towers share the same structural solution, a Frame system.

A frame structure uses a grid of columns and beams to carry the building's loads. This frees the walls from structural duties, allowing for flexible floor plans and larger windows.

However, when it comes to the facade, both buildings use different approaches. The 860-880 Lake Shore Drive Apartments uses a Window Wall facade, while the Kluczynski Federal Building uses a Curtain Wall facade.

A Window Wall facade like the one seen in the 860-880 Lake Shore Drive Apartments uses panels fitted between floor slabs, leaving slab edges visible, while a curtain-wall facade like the one seen in the Kluczynski Federal Building uses a lightweight glass curtain wall hung from the structure.