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Soil Mechanics

Soil Compaction Criteria
Society: ASABEMain Category: Agricultural & BiologicalSub Category: SoilEra: 1930sDateCreated: 1933National Soil Dynamics LaboratoryAuburnState: ALZip: 36832Country: USAWebsite: https://www.asabe.org/awards-landmarks/asabe-historic-landmarks/soil-compaction-criteria-25.aspxCreator: Nichols, Dr. Mark L.

Historically, Farm Tillage Tools Were Designed Without Scientific Knowledge Of How Tools Work The Soil. Thus, A Tool Designed To Operate In One Soil Pulled By A Mule Might Not Operate Satisfactorily In Another Soil Or When Pulled By A Tractor At Higher Speeds. Traction And Flotation Problems Appeared With The Introduction Of Tractors. The Importance Of Developing A Scientific Approach To The Study Of Tillage And Traction Became Apparent During The Transition From Animal To Mechanical Power.

YearAdded:
1990
Image Credit: Courtesy Wikicommons/Blonder1984 (CC BY-SA 3.0)Image Caption: Soil compaction
Texas Commerce Bank Building
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1920-1929DateCreated: 1929JP Morgan Chase BuildingHoustonState: TXZip: 77002Country: USAWebsite: http://www.asce.org/project/texas-commerce-bank-building/Creator: Simpson, William E.

The tower was designed to rest on a continuous reinforced concrete mat, 4 feet thick, with the base of the slab 24 feet below street level.

What makes the Texas Commerce Bank Building revolutionary in the civil engineering world is not so much the building itself, but its foundation.  Initial studies for the type of foundation to be used began in the fall of 1927.  William E. Simpson, the building's chief structural engineer, suggested using a mat foundation, something new for Houston's multistory buildings.

YearAdded:
1997
Image Credit: Courtesy Wikipedia/Reagan Rothenberger Image Caption: The Texas Commerce Bank Building, now called the JP Morgan Chase Building, had a reinforced concrete mat foundation that was revolutionary at the time.Era_date_from: 1929
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