NASCLA Commercial Building Exam , Most Recent Exam
2025/2026 Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
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No more than how many gallons of combustible liquid
should be stored in a
room outside of an approved storage cabinet? -
ANSWER-25 gallons
What size access way must be within 200ft of each pile
of containers -
ANSWER-12ft access
way
Safety devices: Valves should be arranged to afford free vent to
the outer air with discharge of at least how many feet
horizontally away from the building? - ANSWER-5ft
Tarps or coverings should be kept how far from
combustible material? -
ANSWER-
10ft
,Materials stored inside building under construction shall not
be placed within
how many feet of any hoist way or inside floor opening
- ANSWER-6ft
Materials stored inside building under construction shall not be
placed within how many feet of any exterior wall which does
not extend above the top of the material stored - ANSWER-10ft
Bagged materials shall be stacked by stepping back the layers
and cross keying
the bags at least how many bags high? -
ANSWER-10 bags
When Masonry blocks are stacked higher than how many feet,
the stack should
be tapered back - ANSWER-One half block per tier above
the 6ft level
Lumber piles should not exceed how many feet when reached
with machinery -
ANSWER-
20ft
Lumber piles should not exceed how many feet when
reached manually -
ANSWER-
16ft
,Rigging equipment for material handling should be inspected -
ANSWER-Prior
to use on each
shift
Wire rope should not be used if: - ANSWER-In any length of 8
diameters, the
total number of visible broken wire exceeds 10% of the total
number of wires
Switches: All hand held power tools must be operated with
what? - ANSWER-
An on / off
switch
All other hand held power tools such as circular saws and
chain saws, should
be equipped with what - ANSWER-A constant
pressure switch
Compressed air shall not be used for cleaning except when
reduced to what
PSI - ANSWER-30
PSI
Who can use power actuated tools? - ANSWER-Employees
who have been
trained in their
operation
, Abrasive wheels:
How strong should safety guards be? - ANSWER-Strong
enough to withstand force of the wheel breaking
What is the max distance material can be dropped without a
chute over an
exterior -
ANSWER-20ft
When debris is dropped through holes in the floors, the area
onto which the material lands should be protected by what -
ANSWER-Barricades 42in high and at least 6ft out (not less
than)
The following are some of the machines which usually require
point of operation
guarding - ANSWER-
Power saws
Valve protection caps should - ANSWER-Not be used for lifting
cylinders.
What water temperature should be used to thaw cylinders
loose? - ANSWER-
Warm, not
boiling
2025/2026 Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Accurate Answers | Already Graded A+ |
GuarantedSuccess!! | Newest Exam |
Just Released!!
No more than how many gallons of combustible liquid
should be stored in a
room outside of an approved storage cabinet? -
ANSWER-25 gallons
What size access way must be within 200ft of each pile
of containers -
ANSWER-12ft access
way
Safety devices: Valves should be arranged to afford free vent to
the outer air with discharge of at least how many feet
horizontally away from the building? - ANSWER-5ft
Tarps or coverings should be kept how far from
combustible material? -
ANSWER-
10ft
,Materials stored inside building under construction shall not
be placed within
how many feet of any hoist way or inside floor opening
- ANSWER-6ft
Materials stored inside building under construction shall not be
placed within how many feet of any exterior wall which does
not extend above the top of the material stored - ANSWER-10ft
Bagged materials shall be stacked by stepping back the layers
and cross keying
the bags at least how many bags high? -
ANSWER-10 bags
When Masonry blocks are stacked higher than how many feet,
the stack should
be tapered back - ANSWER-One half block per tier above
the 6ft level
Lumber piles should not exceed how many feet when reached
with machinery -
ANSWER-
20ft
Lumber piles should not exceed how many feet when
reached manually -
ANSWER-
16ft
,Rigging equipment for material handling should be inspected -
ANSWER-Prior
to use on each
shift
Wire rope should not be used if: - ANSWER-In any length of 8
diameters, the
total number of visible broken wire exceeds 10% of the total
number of wires
Switches: All hand held power tools must be operated with
what? - ANSWER-
An on / off
switch
All other hand held power tools such as circular saws and
chain saws, should
be equipped with what - ANSWER-A constant
pressure switch
Compressed air shall not be used for cleaning except when
reduced to what
PSI - ANSWER-30
PSI
Who can use power actuated tools? - ANSWER-Employees
who have been
trained in their
operation
, Abrasive wheels:
How strong should safety guards be? - ANSWER-Strong
enough to withstand force of the wheel breaking
What is the max distance material can be dropped without a
chute over an
exterior -
ANSWER-20ft
When debris is dropped through holes in the floors, the area
onto which the material lands should be protected by what -
ANSWER-Barricades 42in high and at least 6ft out (not less
than)
The following are some of the machines which usually require
point of operation
guarding - ANSWER-
Power saws
Valve protection caps should - ANSWER-Not be used for lifting
cylinders.
What water temperature should be used to thaw cylinders
loose? - ANSWER-
Warm, not
boiling
