Trench Box Safety Checklist
Excavation checklists are used to perform safety inspections and risk assessments for excavation and trenching projects.
Trench box safety checklist. Trench boxes must extend eighteen inches above the surface and be no more than two feet from the bottom of the trench. Under that circumstance the trench box must extend 18 inches above the vertical part of the excavation walls to keep dirt rocks and other debris from rolling into the trench. Osha defines an excavation as any man made cut cavity trench or depression in the earth s surface formed by earth removal. Excavation and trenching are among the most hazardous construction operations.
All employees at worksite trained in trenching safety procedures. The occupational safety and health administration s osha excavation standards 29 code. A trench box can be used in combination with other protective systems such as sloping and benching. Trenching and excavation safety 1 introduction excavation and trenching are among the most hazardous construction operations.
A trench is defined as a narrow underground excavation that is deeper than it is wide and is no wider than 15 feet 4 5 meters. Surface encumbrances such as utility poles heavy equipment supported or removed. The occupational safety and health administration requires that a trench box must be used for all trenching or excavations five feet or greater in depth. Excavation checklists are an essential tool used during pre operations to evaluate the jobsite utilities and equipment access means area atmosphere and support systems to identify problems before they occur.