Excavation Safety
A protective system is required for an excavation that exceeds ____ feet of depth.
5 feet deep or more
____ percent of people who perish in cave-ins were people attempting rescue efforts.
50%
In the case of an accident involving a company truck or piece of equipment and a non-company vehicle, this is the first call that should be made.
911
Life jackets should be worn when ____
There is a danger of falling into water
A safe access and exit that includes ladders, steps, ramps, etc. is required for employees working in a trench excavation of ___ feet or more.
4 feet or more
The trenching fatality rate is ___% higher than that for all construction accidents.
112%
You sustain a non-life threatening injury while at work and choose to seek professional medical attention, you then report the incident to ___
Jayme - Casper Construction Health, Safety, and Environmental Manager
Hearing protection can prevent hearing loss and ____
Fatigue
At this depth, atmospheric hazards such as low oxygen, hazardous fumes, and toxic gases should be tested for.
4 feet or more
The majority of trench fatalities occur in trenches ___ to ___ feet deep.
5 to 15
When on a worksite, these 4 safety items should ALWAYS be worn.
High Visibility Vest or Shirt
Hard Hat
Safety Glasses
Protective Footwear
Portable ladders are most stable at this rise-to-run ratio
4:1
Name the three types of trench protective systems as described by MNOSHA. (Hint: 3 S's)
Sloping
Shoring
Shielding
One cubic yard of soil weighs approximately ___lbs.
3,000 lbs
Proper safety glasses must be stamped with ___
Z87+
Casper Construction has Type ___ fire extinguishers
ABC
Equipment and materials should always remain at least ___ feet from the edge of an excavation.
2 Feet
Between 2016 and 2019 ___ Minnesota workers had fatal encounters with ground collapse.
3 MN workers
This is when it is appropriate to post on social media while at work
Never
This type of respirator has been tested and certified by NIOSH to have 95% or greater efficiency against particulate aerosols.
N95 Respirator