NM CID GS-4 Practice Questions - New Mexico CID GS-4 Concrete, Cement, Walkways And Driveways Examination Exam

Employees may work outside the shield at the same depth as the box The shield protects employees inside it from cave-ins; it is not designed as a sloping system, and employees should stay within the shielded length A trench box eliminates the need for a means of egress Benching is the preferred OSHA system in Type C soil instead of a box