Common HazardsPregunta 34 de 100
Which factor most increases the danger of a trench collapse?
a.Dry, cool weather
b.Previously disturbed soil, water intrusion, and vibration from equipment
c.A shallow depth of 1 foot
d.Bright sunlight
Explicación
Previously disturbed soil, water accumulation, and vibration from nearby traffic or equipment all increase the likelihood of a trench collapse. A competent person must evaluate these conditions. Soil that has been dug before does not hold together as reliably as undisturbed ground.
Practica las 100 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- Which is a common caught-in/between hazard during trenching operations?
- What is the purpose of a Job Hazard Analysis (JHA)?
- When working near unstable overhead materials or structures, what is the best first action?
- What does 'housekeeping' on a construction site help prevent?
- A rigging chain snaps and the load drops. Which Focus Four hazard is most directly involved?
- What is a permit-required confined space?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con OSHA 30-Hour Construction Safety · Cómo revisamos