The shell consists of sections with variable diameters that increase from the tip to the pile head. A mandrel is a heavy, rigid steel tube shaped to fit inside the shell. The mandrel is withdrawn after the shell is driven and the shell filled with concrete. Raymond step-tapered piles are predecessors of drilled shafts and are still popular in the southern United States.
Saturday, November 17, 2012
Raymond Step-Tapered Piles.
The shell consists of sections with variable diameters that increase from the tip to the pile head. A mandrel is a heavy, rigid steel tube shaped to fit inside the shell. The mandrel is withdrawn after the shell is driven and the shell filled with concrete. Raymond step-tapered piles are predecessors of drilled shafts and are still popular in the southern United States.
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