Labels:text | map | screenshot OCR: CONSTRUCTION AUGER Workshop B UILDINGS ON SOFT GROUND rest on concrete columns called piles. To make firm foundations, construction AXZ AUGER companies use an auger to dig a deep hole. A crane then lifts the auger back Machines ... ... DDRILI to the surface and spins it to remove the soil. The hole is then filled with concrete. Principles of Science History Inventors Back SEE Index ALSO Options > A Help
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