The floating raft foundation system of interlaced steel beams allowed Chicago architects to construct tall buildings on marshy, unstable soil without the risk of sinking. This innovation, first utilized in the 1882 Montauk Building, represents a pivotal technical shift in vertical construction that defined the urban landscape of the United States during the late nineteenth century.
Formative Years and International Exposure
Born in Lumpkin, Georgia, in 1850, John Wellborn Root was raised in Atlanta before moving to the United Kingdom during the American Civil War. While residing near Liverpool, he attended school and encountered the pioneering metal-framed, glass-clad architecture of Peter Ellis. These early observations of Oriel Chambers and 16 Cook Street provided foundational inspiration for his future design philosophy. Following his return to the United States, Root earned an undergraduate degree from New York University in 1869. He subsequently gained professional experience as an apprentice under James Renwick Jr. and later served as a construction supervisor at the original Grand Central Depot while employed by John Butler Snook.
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Relocating to Chicago in 1871, Root eventually aligned with Daniel Burnham in 1873. The pair established a collaborative firm that spanned eighteen years. During the local economic downturn of 1873, Root supplemented his architectural drafting income by serving as an organist at the First Presbyterian Church. As a central figure of the Chicago School style, he joined colleagues Dankmar Adler, Louis Sullivan, and Burnham to form the Western Association of Architects in response to perceived marginalization by East Coast practitioners. Root served as the organization's president in 1886 and later attained a directorship within the American Institute of Architects in 1887.
Technical Innovation and Major Works
Root integrated structural advancements that pushed the boundaries of skyscraper design. His use of the steel frame for vertical load-bearing walls in the 1887 Phenix Building mirrored developments pioneered by William LeBaron Jenney. His portfolio of notable projects includes the Rookery Building, the Monadnock Building, and the Reliance Building, which remains one of his most significant contributions to the Chicago skyline. Beyond commercial office blocks, his architectural reach extended to ecclesiastical structures such as the Lake View Presbyterian Church and transportation hubs like the Keokuk Union Depot in Iowa. Before his premature death from pneumonia at age 41, he contributed to the planning of the World's Columbian Exposition.
Legacy and Recognition
Root was married twice, first to Mary Louise Walker in 1879 and subsequently to Dora Louise Monroe in 1882. Following his passing in 1891, he was interred at Graceland Cemetery in Chicago. His professional stature continued to grow long after his death; in 1958, the American Institute of Architects honored him posthumously with the AIA Gold Medal. Today, several of his surviving structures, including the Reliance Building and the Rookery, are classified as National Historic Landmarks and listed on the National Register of Historic Places.
Fast facts
- Born: 1850, Lumpkin, Georgia
- Died: 1891, Chicago, Illinois
- Burial site: Graceland Cemetery
- Notable Works: Reliance Building, The Rookery
- Professional Award: AIA Gold Medal (1958)
- Primary Partnership: Burnham and Root (1873-1891)
Questions readers ask
What engineering solution did Root develop for Chicago buildings?
He developed the floating raft system, which used interlaced steel beams to support heavy vertical structures on the city's marshy ground.
Which international architect influenced Root's early perspective?
Liverpool architect Peter Ellis, who designed early metal-framed, glass curtain-walled buildings.
Achievements
- Notable work: Reliance Building
- AIA Gold Medal
