Surface Casing in Excavation Stabilization

To prevent damage to the drilled shaft

To provide structural support for the borehole

To retain the sides of the borehole until the concrete is placed (correct)

To maintain the pressure balance during concrete placement

100 pounds

250 pounds

150 pounds

200 pounds (correct)

To provide a visual guide for equipment operators

To indicate the location of the excavation

To meet regulatory requirements for workplace safety

To alert workers and others of the hazard (correct)

<p>To maintain the pressure balance during the casing removal process</p> Signup and view all the answers

<p>To prevent accidents such as falls, trips, or equipment falling into the excavation</p> Signup and view all the answers