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
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