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.
Trench box safety checklist.
The occupational safety and health administration s osha excavation standards 29 code.
Daily worksite checklist for trenching excavation sites.
Surface encumbrances such as utility poles heavy equipment supported or removed.
A safety checklist may prove helpful when employers.
Trench box extends at least 18 inches above the vertical wall of the excavation and to within 2.
All employees at worksite trained in trenching safety procedures.
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.
Excavation checklists are used to perform safety inspections and risk assessments for excavation and trenching projects.
Excavation and trenching are among the most hazardous construction operations.
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.
A trench box can be used in combination with other protective systems such as sloping and benching.
Osha defines an excavation as any man made cut cavity trench or depression in the earth s surface formed by earth removal.