CAVE-IN
What is NOT a permitted protection method while working in class C soil
Benching
HOW HIGH ABOVE THE SURFACE DOES A LADDER HAVE TO EXTEND?
What is 3'
WHAT IS THE MAX SAFE SLOPE FOR TYPE C SOIL?
What is 1.5 horizontal to 1 vertical
What is the definition of an trench?
An excavation deeper than it is wide
Who is responsible for conducting excavation inspections?
The competent person
THE SPOIL PILE MUST BE AT LEAST HOW FAR AWAY FROM THE EXCAVATION OR TRENCH?
What is 2 FEET
ANOTHER ACCESS TYPE OTHER THAN A LADDER?
What is A RAMP
WHAT IS THE MAX SAFE SLOPE FOR TYPE B SOIL?
What is 1 horizontal to 1 vertical
General Duty Clause
Daily
WHAT MUST BE IN A EXCAVATION WHEN DEPTH IS 5 ' ?
What is CAVE-IN PROTECTION
THE ACCESS MUST BE WITHIN THIS DISTANCE IN A TRENCH?
What is 25 FEET
Water
Excavation safety is currently under a ____ _____ program
National Emphasis
what are the 3 parts of a guardrail system?
toprail, midrail, toeboard
18 inches
STARTING AT WHAT DEPTH IS ACESS/EGRESS REQUIRED?
What is 4 FEET
WHAT IS THE MAX SAFE SLOPE FOR TYPE A SOIL?
What is 0.75 horizontal to 1 vertical
What are at least 3 contributing factors to a trench collapsing
Vibrations, water, freezing and thawing, adjacent structures, improper soil classification/protective measure
What is the height requirement for the toprail of a guardrail system?
39-42 inches
What is the most misclassified type of soil in our area?
Ex: People always say it's "this" type of soil when it is actually not that type of soil
Class B
WHAT IS THE MAX HEIGHT OF A BENCH IN TYPE B SOIL?
What is 4 FEET
When are excavations required to be barricaded?
When the excavation is not easily visible while approaching
Name at least 3 things to look for during an excavation inspection
Soil conditions/classification, protective systems, signs of water, adjacent structures, access/egress points, signs of cracks/displacement, changes in depth