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NASCLA ACCREDITED EXAM LATEST 2024/2025
WITH ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/ALREADY GRADED A+
What are 4 types of Steel Decking? - (answers)Composite, Roof, Cellular, and Form
What are the lengths of Full sheets of Steel Decking? - (answers)12", 18", 24", 30", or 36". All are
usually less than 40"
Who has full responsibility for Safety on a construction site? - (answers)The prime contractor
Who is responsible to ensure workers have appropriate eye protection? - (answers)The employer
Safety belt lanyard shall be a minimum of? - (answers)1/2 inch nylon, w/ max length to provide for a
fall of no greater than 6ft. The rope shall have a nominal breaking strength of 5,400 lbs.
When should safety nets be provided? - (answers)When workplaces are more than 25 feet above
ground or water surface or where use of ladders, scaffolds, catch platforms, temporary floors, safety
lines, or safety belts are impractical
What are the different types of Safety Equipment? - (answers)Head, Eye and Face, and Respiratory
protection. Safety belts, lifelines, lanyards, and safety nets
Where should quantities of flammable liquid in excess of 25 gallons be stored in that is acceptable or
approved? - (answers)Acceptable wooden storage and Approved metal storage cabinets. Cabinets
shall be labeled in conspicuous lettering "Flammable-Keep Away from Open Flames"
LP-Gas storage outside of buildings for containers waiting use shall be located from the nearest
building or group of buildings in accordance to? - (answers)1. 500 lbs or less - 0ft
2. ***501 to 6,000 lbs - 10ft
3. 6,001 to 10,000 lbs - 20ft
4. Over 10,000 lbs - 25ft
Clearance and mounting of temporary heating devices are? - (answers)1. Room heater, circulating
type - 12" sides, 12" rear, 18" chimney connector
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2. ***Room heater, radiant type - 36" sides, 36" rear, 18" chimney connector
How far shall heaters used in the vicinity of the combustible tarpaulins, canvas, or similar coverings
be located from the coverings? - (answers)10 feet from coverings
Material stored inside buildings under construction shall not be placed with what distances? -
(answers)6 feet of any hoistway or inside floor openings, ***not within 10 feet of exterior wall which
does not extend above the top of the material stored
Bagged materials shall be stacked by stepping back the layers and cross-keying the bags at least by
how many bags high? - (answers)10 bags high
Brick stacks shall not be more than? - (answers)7 feet in height
When a loose brick stack reaches a height of 4 feet, it shall be tapered back by how many inches? -
(answers)2 inches in every foot of height above the 4-foot level
When masonry blocks are stacked higher than 6 feet, the stack shall be tapered back how far? -
(answers)Back one-half block per Tier above the 6-foot level
Used lumber shall have what withdrawn before stacking? - (answers)Nails
How shall lumber be stacked? - (answers)On level and solid supported sills, and stable and self
supporting
Lumber piles shall not Exceed? - (answers)20 feet in height provided that lumber to be handled
manually shall not be stacked more than 16 feet high
Wire rope shall not be used if? - (answers)In any length of eight diameters, the total number of
visible broken wires exceeds 10 percent of the total number of wires, or if rope shows other signs of
excessive wear, corrosion, or defect
Waste materials - when materials are dropped more than 20 feet to any point lying outside the
exterior walls of the building what is needed? - (answers)An enclosed chute of wood, or equivalent
material, shall be used. Enclosed chute is a slide, closed in on all sides, through which material is
moved from a high place to a lower one
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All other hand-held powered tools such as circular saws, chain saws, and percussion tools without
positive accessory holding means, shall be equipped with what? - (answers)A constant pressure
switch that will shut off the power when the pressure is released
Compressed air shall not be used for cleaning purposes except when? - (answers)Where reduced to
less than 30 p.s.i and then only with effective chip guarding and personal protective equipment
which meets the requirements. The 30 psi requirement does not apply for concrete form, mill scale
and similar cleaning purposes
Who shall be allowed to operated a powder-actuated tool? - (answers)Only employees who have
been trained in the operation of the particular tool in used
All employees using abrasive wheels shall be protected by? - (answers)Eye protection equipment
Guarding, all portable, power-driven circular saws shall be equipped with what? - (answers)Guards
above and below the base plate or shoe. The upper guard shall cover the saw to the depth of the
teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower
guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow
proper retraction and contract with the work. When the tool is withdrawn from the work, the lower
guard shall automatically and instantly return to the covering position.
Valve protection caps shall not be used for lifting cylinders from one vertical position to another. -
(answers)Bars shall not be used under valves or valve protection caps to pry cylinders loose when
frozen. Warm, not boiling, water shall be used to thaw cylinder loose
How should compressed air be secured? - (answers)In an upright position at all times except, if
necessary, for short periods of time while cylinders are actually being hoisted or carried
What distance shall Oxygen cylinders in storage be separated from fuel-gas cylinders or combustible
materials (especially oil or grease)? - (answers)A minimum distance of 20 ft (6.1m) or by non-
combustible barrier at least 5 ft (1.5m) high having fire-resistance rating of a least one-half hour.
Inside of buildings, how shall Gas cylinders be stored? - (answers)In a well protected, well-ventilated,
dry location, at least 2 ft (6.1m) from highly combustible materials such as oil or excelsior. Cylinders
should be stored in definitely assigned places away from elevators, stairs, or gangways. Assigned
storage places shall be located where cylinders will not be knocked over or damaged by passing or
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falling objects, or subject to tampering by unauthorized persons. Cylinders shall not be kept in
unventilated enclosures such as lockers and cupboards.
How shall a regulator to a cylinder valve be connected? - (answers)The valve shall be opened slightly
and closed immediately. (The action is generally termed "cracking" and is intended to clear the valve
of dust or dirt that might otherwise enter the regulator.) The person cracking the valve shall stand to
one side of the outlet, not in front of it. The valve of fuel gas cylinder shall not be cracked where the
gas would reach welding work, sparks, flame, or other possible sources of ignition.
All hose in use, carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance
which may ignite or enter into combustion, or be in any way harmful to employees shall? -
(answers)Be inspected at the beginning of each working shift. Defective hose shall be removed from
service.
When the arc welder or cutter has occasion to leave his work or to stop work for any appreciable
length of time, or when the arc welding or cutting machine is to be moved, what should happen? -
(answers)The power supply switch to the equipment shall be opened.
Lifelines. Where a welder must enter a confined space through a manhole or other small opening,
what should occur? - (answers)Means shall be provided for quickly removing him in case of
emergency. When safety belts and lifelines are used for this purpose they shall be so attached to the
welder's body that his body cannot be jammed in a small exit opening. An attendant with a pre-
planned rescue procedure shall be stationed outside to observe the welder at all times and be
capable of putting rescue operations into effect.
Working Clearances (voltage) - (answers)1. Nominal voltage to ground, 0-150 = Minimum clear
distance for conditions are 3 ft, 3ft, 3ft
2. Nominal voltage to ground, 151-600 = Minimum clear distance for conditions are 3ft, 3.5ft, 4ft
Minimum Depth of Clear Working Space in Front of Electrical Equipment - (answers)1. Nominal
voltage to ground, 601 to 2,500 = Conditions 3ft, 4ft, 5ft
2. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft, 6ft
3. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft, 6ft, 9ft
4. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft, 8ft, 10ft
5. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft, 12ft
NASCLA ACCREDITED EXAM LATEST 2024/2025
WITH ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/ALREADY GRADED A+
What are 4 types of Steel Decking? - (answers)Composite, Roof, Cellular, and Form
What are the lengths of Full sheets of Steel Decking? - (answers)12", 18", 24", 30", or 36". All are
usually less than 40"
Who has full responsibility for Safety on a construction site? - (answers)The prime contractor
Who is responsible to ensure workers have appropriate eye protection? - (answers)The employer
Safety belt lanyard shall be a minimum of? - (answers)1/2 inch nylon, w/ max length to provide for a
fall of no greater than 6ft. The rope shall have a nominal breaking strength of 5,400 lbs.
When should safety nets be provided? - (answers)When workplaces are more than 25 feet above
ground or water surface or where use of ladders, scaffolds, catch platforms, temporary floors, safety
lines, or safety belts are impractical
What are the different types of Safety Equipment? - (answers)Head, Eye and Face, and Respiratory
protection. Safety belts, lifelines, lanyards, and safety nets
Where should quantities of flammable liquid in excess of 25 gallons be stored in that is acceptable or
approved? - (answers)Acceptable wooden storage and Approved metal storage cabinets. Cabinets
shall be labeled in conspicuous lettering "Flammable-Keep Away from Open Flames"
LP-Gas storage outside of buildings for containers waiting use shall be located from the nearest
building or group of buildings in accordance to? - (answers)1. 500 lbs or less - 0ft
2. ***501 to 6,000 lbs - 10ft
3. 6,001 to 10,000 lbs - 20ft
4. Over 10,000 lbs - 25ft
Clearance and mounting of temporary heating devices are? - (answers)1. Room heater, circulating
type - 12" sides, 12" rear, 18" chimney connector
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2. ***Room heater, radiant type - 36" sides, 36" rear, 18" chimney connector
How far shall heaters used in the vicinity of the combustible tarpaulins, canvas, or similar coverings
be located from the coverings? - (answers)10 feet from coverings
Material stored inside buildings under construction shall not be placed with what distances? -
(answers)6 feet of any hoistway or inside floor openings, ***not within 10 feet of exterior wall which
does not extend above the top of the material stored
Bagged materials shall be stacked by stepping back the layers and cross-keying the bags at least by
how many bags high? - (answers)10 bags high
Brick stacks shall not be more than? - (answers)7 feet in height
When a loose brick stack reaches a height of 4 feet, it shall be tapered back by how many inches? -
(answers)2 inches in every foot of height above the 4-foot level
When masonry blocks are stacked higher than 6 feet, the stack shall be tapered back how far? -
(answers)Back one-half block per Tier above the 6-foot level
Used lumber shall have what withdrawn before stacking? - (answers)Nails
How shall lumber be stacked? - (answers)On level and solid supported sills, and stable and self
supporting
Lumber piles shall not Exceed? - (answers)20 feet in height provided that lumber to be handled
manually shall not be stacked more than 16 feet high
Wire rope shall not be used if? - (answers)In any length of eight diameters, the total number of
visible broken wires exceeds 10 percent of the total number of wires, or if rope shows other signs of
excessive wear, corrosion, or defect
Waste materials - when materials are dropped more than 20 feet to any point lying outside the
exterior walls of the building what is needed? - (answers)An enclosed chute of wood, or equivalent
material, shall be used. Enclosed chute is a slide, closed in on all sides, through which material is
moved from a high place to a lower one
, 3
All other hand-held powered tools such as circular saws, chain saws, and percussion tools without
positive accessory holding means, shall be equipped with what? - (answers)A constant pressure
switch that will shut off the power when the pressure is released
Compressed air shall not be used for cleaning purposes except when? - (answers)Where reduced to
less than 30 p.s.i and then only with effective chip guarding and personal protective equipment
which meets the requirements. The 30 psi requirement does not apply for concrete form, mill scale
and similar cleaning purposes
Who shall be allowed to operated a powder-actuated tool? - (answers)Only employees who have
been trained in the operation of the particular tool in used
All employees using abrasive wheels shall be protected by? - (answers)Eye protection equipment
Guarding, all portable, power-driven circular saws shall be equipped with what? - (answers)Guards
above and below the base plate or shoe. The upper guard shall cover the saw to the depth of the
teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower
guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow
proper retraction and contract with the work. When the tool is withdrawn from the work, the lower
guard shall automatically and instantly return to the covering position.
Valve protection caps shall not be used for lifting cylinders from one vertical position to another. -
(answers)Bars shall not be used under valves or valve protection caps to pry cylinders loose when
frozen. Warm, not boiling, water shall be used to thaw cylinder loose
How should compressed air be secured? - (answers)In an upright position at all times except, if
necessary, for short periods of time while cylinders are actually being hoisted or carried
What distance shall Oxygen cylinders in storage be separated from fuel-gas cylinders or combustible
materials (especially oil or grease)? - (answers)A minimum distance of 20 ft (6.1m) or by non-
combustible barrier at least 5 ft (1.5m) high having fire-resistance rating of a least one-half hour.
Inside of buildings, how shall Gas cylinders be stored? - (answers)In a well protected, well-ventilated,
dry location, at least 2 ft (6.1m) from highly combustible materials such as oil or excelsior. Cylinders
should be stored in definitely assigned places away from elevators, stairs, or gangways. Assigned
storage places shall be located where cylinders will not be knocked over or damaged by passing or
, 4
falling objects, or subject to tampering by unauthorized persons. Cylinders shall not be kept in
unventilated enclosures such as lockers and cupboards.
How shall a regulator to a cylinder valve be connected? - (answers)The valve shall be opened slightly
and closed immediately. (The action is generally termed "cracking" and is intended to clear the valve
of dust or dirt that might otherwise enter the regulator.) The person cracking the valve shall stand to
one side of the outlet, not in front of it. The valve of fuel gas cylinder shall not be cracked where the
gas would reach welding work, sparks, flame, or other possible sources of ignition.
All hose in use, carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance
which may ignite or enter into combustion, or be in any way harmful to employees shall? -
(answers)Be inspected at the beginning of each working shift. Defective hose shall be removed from
service.
When the arc welder or cutter has occasion to leave his work or to stop work for any appreciable
length of time, or when the arc welding or cutting machine is to be moved, what should happen? -
(answers)The power supply switch to the equipment shall be opened.
Lifelines. Where a welder must enter a confined space through a manhole or other small opening,
what should occur? - (answers)Means shall be provided for quickly removing him in case of
emergency. When safety belts and lifelines are used for this purpose they shall be so attached to the
welder's body that his body cannot be jammed in a small exit opening. An attendant with a pre-
planned rescue procedure shall be stationed outside to observe the welder at all times and be
capable of putting rescue operations into effect.
Working Clearances (voltage) - (answers)1. Nominal voltage to ground, 0-150 = Minimum clear
distance for conditions are 3 ft, 3ft, 3ft
2. Nominal voltage to ground, 151-600 = Minimum clear distance for conditions are 3ft, 3.5ft, 4ft
Minimum Depth of Clear Working Space in Front of Electrical Equipment - (answers)1. Nominal
voltage to ground, 601 to 2,500 = Conditions 3ft, 4ft, 5ft
2. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft, 6ft
3. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft, 6ft, 9ft
4. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft, 8ft, 10ft
5. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft, 12ft
