CHST TRENCHING SECTION EXAM
QUESTIONS AND ANSWERS 2026
VERIFIED.
Do bull floats used around electrical conductors need multiple sections to prevent contact? -
ANS False
What must concrete buckets be designed to prevent? - ANS Concrete from hanging up on
the top and sides.
What must manually guided powered concrete trowels do when hands are removed? -
ANS Shut off automatically.
What is required for bulk storage bins, containers, and silos? - ANS Access hatch and
ladder for entry.
Is it safe to stand behind the jack during post-tensioning operations? - ANS False
Can workers stand under a concrete bucket while performing work? - ANS False
What is the requirement for a limited access zone for masonry? - ANS Only needed until
wall is braced.
1
, At what minimum height must masonry walls be braced? - ANS 8 feet.
When must shoring equipment be inspected? - ANS Immediately after concrete
placement.
Are sills and base plates required with all shoring equipment? - ANS True.
What is the most important requirement before entering a bulk storage bin? - ANS Safe
access.
Must all rebar be protected regardless of height? - ANS False.
Can a site supervisor determine if fresh concrete can support loads? - ANS False.
Who must design lift-slab operations? - ANS A competent person.
Who may be in the area during lifting of lift-slab operations? - ANS Only the immediate
lift-slab crew.
How must concrete buggy handles be designed? - ANS They must extend beyond the
wheels.
Do only hydraulic concrete buckets require safety latches? - ANS False.
What must rebar structures have during lifting? - ANS Support.
Which PPE is NOT required for pneumatic cement application? - ANS Leather apron.
2
QUESTIONS AND ANSWERS 2026
VERIFIED.
Do bull floats used around electrical conductors need multiple sections to prevent contact? -
ANS False
What must concrete buckets be designed to prevent? - ANS Concrete from hanging up on
the top and sides.
What must manually guided powered concrete trowels do when hands are removed? -
ANS Shut off automatically.
What is required for bulk storage bins, containers, and silos? - ANS Access hatch and
ladder for entry.
Is it safe to stand behind the jack during post-tensioning operations? - ANS False
Can workers stand under a concrete bucket while performing work? - ANS False
What is the requirement for a limited access zone for masonry? - ANS Only needed until
wall is braced.
1
, At what minimum height must masonry walls be braced? - ANS 8 feet.
When must shoring equipment be inspected? - ANS Immediately after concrete
placement.
Are sills and base plates required with all shoring equipment? - ANS True.
What is the most important requirement before entering a bulk storage bin? - ANS Safe
access.
Must all rebar be protected regardless of height? - ANS False.
Can a site supervisor determine if fresh concrete can support loads? - ANS False.
Who must design lift-slab operations? - ANS A competent person.
Who may be in the area during lifting of lift-slab operations? - ANS Only the immediate
lift-slab crew.
How must concrete buggy handles be designed? - ANS They must extend beyond the
wheels.
Do only hydraulic concrete buckets require safety latches? - ANS False.
What must rebar structures have during lifting? - ANS Support.
Which PPE is NOT required for pneumatic cement application? - ANS Leather apron.
2
