OSHA 30- Excavation Hazards, Soils Questions And Answers !!

OSHA 30- Excavation Hazards, Soils Questions And Answers !! A cubic yard of soil can weigh as much as: - Correct Answer A small pickup truck To be classified as type A, the soil cannot be - Correct Answer All of the above (disturbed, part of a mixed layered system, subject to vibration, seeping water When your trench is deeper than 4 ft and hazards may be present, air monitoring must be done before entry - Correct Answer True A soil cannot be Type A if it is: - Correct Answer All of the above Which of the following are common soil classification tests? - Correct Answer All except C A soils are usually clay and cemented soils such as caliche and hardpan - Correct Answer True Each of the following is Type B soil EXCEPT: - Correct Answer Sand The definition of type C-60 soil is provided by manufactures to allow the competent person an opportunity to use vertical shores or other protective systems in accordance with tables provided by the manufacture - Correct Answer True The most important distinction b/w stable rock types A&B and type C is: - Correct Answer Degree of stability A defining feature of stable rock is that it will: - Correct Answer Remain intact while exposed OSHA requires that the competent person perform two visual and two manual test on a soil sample fresh out of the ground and not impacted by weather conditions at the site - Correct Answer False Aluminum hydraulic shoring permits both installation and removal without enteri