Lecture21-Augercast-shafts

Lecture21-Augercast-shafts - Foundation Engineering...

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Unformatted text preview: Foundation Engineering Foundation Engineering Lecture #21 Lecture #21 Augercast Shafts L. Prieto-Portar 2009 Augercast piles being installed on Collins Avenue, Miami Beach (2006). AC shafts are used in Dadeland mall for both new buildings at left, and remodeling older ones (Saks) at right. Notice the different shapes each AC shaft have with respect to their theoretical cylinder designed shapes. Many shafts link up to their adjacent members, especially at depth. This linking improves the soil and greatly increases the shaft pull-out capacity. Notice the scale on the shaft surface, indicating a secondary coat from grouting discontinuities. These 16” diameter shafts were designed for 240-ton capacities, but the test pile showed much higher capacities were possible. Low-head Room Placement of Auger-cast Shafts The auger tip has sharp cutting teeth at the tip to tear through the limestone strata. The bottom has a 2”-diameter pipe to pump the grout when the bearing stratum is reached. The hole is sealed with the cork shown at right.hole is sealed with the cork shown at right....
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This note was uploaded on 09/07/2011 for the course CEG 4012 taught by Professor Staff during the Spring '10 term at FIU.

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Lecture21-Augercast-shafts - Foundation Engineering...

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