Trussed Concrete Steel Company
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| Industry | Steel |
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| Fate | Merged |
| Successor | Republic Steel |
| Founded | 1903 |
| Defunct | 1937 |
| Headquarters | |
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Key people
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| Products | |
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Number of employees
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approx. 10,000 |
| Parent | Trussed Concrete Steel |
The Trussed Concrete Steel Company was a company founded by Julius Kahn, an engineer and inventor. The company manufactured prefabricated products for reinforced concrete beams and steel forms for building reinforced concrete floors and walls. Kahn invented and patented a unique new technology reinforcement system of construction called the Kahn System that was stronger, more economical, and lighter than the existing old school technology used up to that point to construct buildings. The old method was to use plain straight smooth steel beams or loose rods or stirrups in concrete beams and floors. Kahn's new technology improved system used 45 degree tab flanges or "wings" permanently attached on steel beams that distributed the tension stress for overall improvement in strength of reinforced concrete.
Kahn founded in 1903 the Trussed Concrete Steel Company in a small Detroit building with a dozen employees for manufacturing the specially designed steel products for reinforcement in concrete beams and walls. Kahn became its first president. The company had its headquarters in Detroit, Michigan. The main manufacturing factory for the steel products was located in Youngstown, Ohio, after being in Detroit at first from 1903–1906. In 1906 a one-acre industrial site was developed in Youngstown at a cost of a million dollars. The new steel factory officially opened its doors for business in May 1907 with 100 employees. The Youngstown factory was developed because of its easy access to raw materials needed for steel production. The headquarters for Trussed Concrete Steel Company was located in Detroit at the northeast corner of Lafayette Boulevard and Wayne Street, in a new eight-story skyscraper built by Albert Kahn Associates in 1907. The building was the first office building in Detroit built from concrete and was later known as the Owen Building. The Packard automobile factory plant building number 10, originally designed in 1903–05, was the first time an automobile factory was constructed in the United States using reinforced concrete.
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