100% Verified Correct Answers.
19 inches or more - correct answers When two levels are a certain distance apart, employers have to
provide a ladder or stairway between them. What is that distance?
When the excavation is deeper than 4 feet - correct answers Under what conditions does your employer
have to test for air hazards in a trench?
No, they aren't required for any trench less than 20 feet deep. - correct answers Your company is digging
a 16-foot-deep trench. Does your employer need to call a registered professional engineer?
Make the trench wider at the top than at the bottom. - correct answers Which is a method to prevent
cave-ins?
It's loose or sandy, which means more safety measures are needed. - correct answers The competent
person on the job site has let you know the soil you're working with is Type C soil. What type of soil is
this?
Have the authority to immediately correct hazards. - correct answers For excavations, a person is
considered competent if they ...
A piece of heavy equipment is working near the excavation edge. - correct answers Which of the
following conditions could lead to a cave-in?
Normal safety measures aren't enough to prevent a cave-in. - correct answers Why must a registered
professional engineer design the safety systems for trenches deeper than 20 feet?
2 feet - correct answers How far away from the trench edge should materials, excess soil, and tools be
kept?
, 18 inches - correct answers To keep heavy loads from falling in, how high does a trench protection
system need to extend above a trench?
Classifying the soil - correct answers A competent person is responsible for which of the following?
None - correct answers You and your team are trenching in solid rock. What type of protective system
do you need to install?
A competent person should check the trench for hazards. - correct answers You've been installing sewer
piping inside a trench, and a storm just passed through. What should you do?
A possible cave-in - correct answers You notice that the bottom of the trench is cracking. What is this a
sign of?
Back right - correct answers Which area of a crane has the worst blind spot?
Overloading - correct answers Of the following, which causes the most crane failures?
Monthly - correct answers A competent person is responsible for which type of inspection?
Voltage of the powerlines - correct answers What information does your employer need to use to
decide how far to keep the crane from power lines?
Establish a work zone. - correct answers What should you do when operating a crane around power
lines?
Manufacturer's instructions - correct answers Which of the following must be kept on the crane?
Load moment indicator - correct answers Which system helps the crane operator avoid overloading the
crane?