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Reinforced Concrete

Ward House
Society: ASCE Main Category: Civil Sub Category: Buildings Era: 1870-1879 DateCreated: 1876 1-99 Magnolia Dr
Rye State: NY Zip: Country: USA Website: Creator: Ward, William , Mook, Robert

It is a large, imposing structure (over a dozen rooms and spacious halls) dominated by a four-story octagonal tower at one corner and a second shorter square tower at another corner containing tanks for potable and fire-fighting water supply.

Image Credit: Courtesy Wikipedia/Daniel Case (CC BY-SA 3.0) Image Caption: Ward House Era_date_from: 1876
Salginatobel Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1930-1939 DateCreated: 1930 Salgina Valley ravine Schiers State: Graubünden Zip: Country: Switzerland Website: Creator: Maillart, Robert

The Salginatobel Bridge, spanning the Salgina Valley ravine, is the earliest surviving three-hinged, hollow box arch bridge designed by  Robert Maillart.

Image Credit: Courtesy Wikipedia/Rama (CC BY-SA 2.0) Image Caption: Salginatobel Bridge Era_date_from: 1930
Kamehameha V Post Office
Society: ASCE Main Category: Civil Sub Category: Buildings Era: 1870-1879 DateCreated: 1871 corner of Merchant and Bethel Streets Honolulu State: HI Zip: 96813 Country: USA Website: Creator: Osborn, J.G.

The Kamehameha V Post Office is the oldest surviving public building in the U.S.  constructed with reinforced concrete. The success of this early structure helped establish the value of reinforced concrete as a durable construction material.

Brickmaker J.G. Osborne was chosen to provide design and construction. He  immigrated to Hawaii from Yorkshire, England, and was aware of the recent  development of Portland cement and its expanding use in Europe. It is believed that the leaders of Hawaii were anxious to adopt British skills, which influenced their selection of Osborne.

Image Credit: Public Domain (Author's Choice) Image Caption: Kamehameha V Post Office Era_date_from: 1871
Ingalls Building
Society: ASCE Main Category: Civil Sub Category: Buildings Era: 1900-1909 DateCreated: 1903 Central Business District Cincinnati State: OH Zip: 45202 Country: USA Website: Creator: Hooper, Henry N. , Ransome, Ernest L.

The 16-story Ingalls Building, still in use today, was the world's first reinforced concrete skyscraper. Its success led to the acceptance of high-rise concrete construction in the United States.

Melville E. Ingalls, for whom the building is named, spent two years convincing city officials to issue a building permit. Skepticism was high, because the existing height record for a concrete building was only six stories.

Image Credit: Public Domain; Produced prior to 1/1/1923 Image Caption: Ingalls Building Era_date_from: 1903
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