How far back from a trench should a CAZ barricade be?
Reviewed by Julie Gunn, Head of Services, SALUS Safety
The question, as asked: How far should CAZ barricade be back from a trench
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Rosie's answer
Published by SALUSI am unable to provide a specific distance for Controlled Access Zone (CAZ) barricades from a trench. The provided documents do not specify a required distance. However, the documents do state that you must protect employees from excavated or other materials or equipment that could pose a hazard by falling or rolling into excavations [1]. This can be achieved by placing and keeping such materials or equipment at least 2 feet (.61 m) from the edge of excavations, or by the use of retaining devices that are sufficient to prevent materials or equipment from falling or rolling into excavations, or by a combination of both if necessary [1].
Sources used for this answer
[1] Safety and Health Regulations for Construction (OSHA)
Page 96
Open source documentSource excerpt
- (iv) A registered professional engineer has approved the determination that such excavation work will not pose a hazard to employees. - (3) Sidewalks, pavements, and appurtenant structure shall not be undermined unless a support system or another method of protection is provided to protect employees from the possible collapse of such structures. - (j) Protection of employees from loose rock or soil. (1) Adequate protection shall be provided to protect employees from loose rock or soil that could pose a hazard by falling or rolling from an excavation face. Such protection shall consist of scaling to remove loose material; installation of protective barricades at intervals as necessary on the face to stop and contain falling material; or other means that provide equivalent protection. - (2) Employees shall be protected from excavated or other materials or equipment that could pose a hazard by falling or rolling into excavations. Protection shall be provided by placing and keeping such materials or equipment at least 2 feet (.61 m) from the edge of excavations, or by the use of retaining devices that are sufficient to prevent materials or equipment from falling or rolling into excavations, or by a combination of both if necessary. - (k) Inspections. (1) Daily inspections of excavations, the adjacent areas, and protective systems shall be made by a competent person for evidence of a situation that could result in possible cave-ins, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions. An inspection shall be conducted by the competent person prior to the start of work and as needed throughout the shift. Inspections shall also be made after every rainstorm or other hazard increasing occurrence. These inspections are only required when employee exposure can be reasonably anticipated. - (2) Where the competent person finds evidence of a situation that could result in a possible cave-in, indications of failure of protective sys…
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