Lecture12-Mats-vs-Piles

Lecture12-Mats-vs-Piles - Foundation Engineering Foundation...

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Foundation Engineering Lecture #12 The foundations for the Dadeland-Fairfield Building A study of the problems between a mat foundation and piles. L. Prieto-Portar 2009
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Project data: The design development started in early 2002; Project consists of 3 towers ( 37, 12 and 10 stories); Permitting estimated to take 90 days; Serious discussions centered in whether to use a mat foundation versus auger-cast piles (14 and 24-inch diameter) on pile caps; An early design consideration was to excavate to a depth that would provide a two-story underground basement; The initial (2002) budget was 65 million dollars; Subsequently, a value engineering study reduced the basement to only one level; Project completion date was desired for July 2004; Most of the foundations were completed by early of 2003;
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Preparing the load test pile.
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Load testing auger-cast piles.
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Vibro-driving steel sheet piling 1” away from the property line, adjacent to Kendall Drive.
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Vibrating the steel sheet piling 1 inch from the property line.
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Installing the auger-cast piles for the mat.
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