Osha 30 construction excavation questions and answers
2023 with complete solution
when your trench is deeper than 4 feet and hazards may be present air
monitoring must be done before entry
A. true
Excavation safety standards have introduced in 1989
A. true
To be classified as type a the soil cannot be
E. all of the above
each of the following is a type b soil except
D. sand
A soil are usually clays and cemented soil such as caliche and hardpan
A. true
Which of the following are common soil classification tests
E. all except c
the most important distinction between stable rock types is
C. 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
A. true
A defining feature of stable rock is that it will
B. remain intact while exposed
Osha requires that the competent person perform two visual and two manual
tests
B. False
A soil cannot be type a if it is
D. all of the above
which of the following statements is true of kick out
D. all of the above
Which soil type is the most common
b. Type b
True or false shores must be pumped to a minimum of 750 lbs of pressure but
more is recomended
A.true
Type b soils afford how many options of protection
d. four
true or false mixed oak timbers have a greater bending strength per square inch
than douglas fir.
B. false
True or false aluminum hydraulic shoring permits both installation and removal
without entering the trench
A. true
In type c soil the angle o repose is very low how many degrees must the angle be
2023 with complete solution
when your trench is deeper than 4 feet and hazards may be present air
monitoring must be done before entry
A. true
Excavation safety standards have introduced in 1989
A. true
To be classified as type a the soil cannot be
E. all of the above
each of the following is a type b soil except
D. sand
A soil are usually clays and cemented soil such as caliche and hardpan
A. true
Which of the following are common soil classification tests
E. all except c
the most important distinction between stable rock types is
C. 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
A. true
A defining feature of stable rock is that it will
B. remain intact while exposed
Osha requires that the competent person perform two visual and two manual
tests
B. False
A soil cannot be type a if it is
D. all of the above
which of the following statements is true of kick out
D. all of the above
Which soil type is the most common
b. Type b
True or false shores must be pumped to a minimum of 750 lbs of pressure but
more is recomended
A.true
Type b soils afford how many options of protection
d. four
true or false mixed oak timbers have a greater bending strength per square inch
than douglas fir.
B. false
True or false aluminum hydraulic shoring permits both installation and removal
without entering the trench
A. true
In type c soil the angle o repose is very low how many degrees must the angle be
