Osha 30 construction excavation
when your trench is deeper than 4 feet and hazards may be present air monitoring must
be done before entry - answer A. true
Excavation safety standards have introduced in 1989 - answer A. true
To be classified as type a the soil cannot be – answer E. all of the above
each of the following is a type b soil except - answerD. sand
A soil are usually clays and cemented soil such as caliche and hardpan - answer A. true
Which of the following are common soil classification tests - answerE. all except c
the most important distinction between stable rock types is - answerC. degree of
stability
the definition of type c 60 soil is provided by manufacturers to allow the competent
person an opportunity to use vertical shores or other protective systems in accordance
with tables provided by the manufacturer - answerA. true
A defining feature of stable rock is that it will - answerB. remain intact while exposed
Osha requires that the competent person perform two visual and two manual tests -
answerB. False
A soil cannot be type a if it is - answerD. all of the above
which of the following statements is true of kick out - answerD. all of the above
Which soil type is the most common - answerb. Type b
True or false shores must be pumped to a minimum of 750 lbs of pressure but more is
recomended - answerA.true
Type b soils afford how many options of protection - answerd. four
true or false mixed oak timbers have a greater bending strength per square inch than
douglas fir. - answerB. false
True or false aluminum hydraulic shoring permits both installation and removal without
entering the trench - answerA. true
when your trench is deeper than 4 feet and hazards may be present air monitoring must
be done before entry - answer A. true
Excavation safety standards have introduced in 1989 - answer A. true
To be classified as type a the soil cannot be – answer E. all of the above
each of the following is a type b soil except - answerD. sand
A soil are usually clays and cemented soil such as caliche and hardpan - answer A. true
Which of the following are common soil classification tests - answerE. all except c
the most important distinction between stable rock types is - answerC. degree of
stability
the definition of type c 60 soil is provided by manufacturers to allow the competent
person an opportunity to use vertical shores or other protective systems in accordance
with tables provided by the manufacturer - answerA. true
A defining feature of stable rock is that it will - answerB. remain intact while exposed
Osha requires that the competent person perform two visual and two manual tests -
answerB. False
A soil cannot be type a if it is - answerD. all of the above
which of the following statements is true of kick out - answerD. all of the above
Which soil type is the most common - answerb. Type b
True or false shores must be pumped to a minimum of 750 lbs of pressure but more is
recomended - answerA.true
Type b soils afford how many options of protection - answerd. four
true or false mixed oak timbers have a greater bending strength per square inch than
douglas fir. - answerB. false
True or false aluminum hydraulic shoring permits both installation and removal without
entering the trench - answerA. true
