NHIE 2026 Exam with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
In slab-on-grade construction, the top of the foundation should be ____ inches above grade in
order to protect the exterior wall structure and finish from moisture. ✔Correct Answer-8
inches
The ends of a joist, beam or girder should have at least 1 and 1/2 inches (38 mm) of bearing on
wood or metal and have at least _____ inches of bearing (76 mm) on masonry or concrete.
✔Correct Answer-3 inches
The maximum distance between foundation anchor bolts is ____ feet. ✔Correct Answer-6
feet
An anchor bolt should be within ____ inches of the end of the sill plate. ✔Correct Answer-12
inches
The maximum depth for a notch in a beam or joist is ______ the board's depth. ✔Correct
Answer-one-sixth
The maximum depth for a notch at the end of a joist is _____ the joist's depth. ✔Correct
Answer-one-sixth
A hole may be bored no closer than _____ from the top or bottom of a joist. ✔Correct
Answer-2 inches
A non-bearing partition stud can be _____ notched. ✔Correct Answer-40%
When the span of a header is greater than ____ feet, it's necessary to double the trimmer and
header rafters. ✔Correct Answer-4 feet
The maximum span for a 2x6 purlin is _____ feet. ✔Correct Answer-6 feet
The minimum required headroom above an attic access opening is ____ inches. ✔Correct
Answer-30 inches
The minimum height for a guardrail is ____ inches. ✔Correct Answer-36 inches
On a stairway, the maximum rise is ____ inches, and minimum run is 10 inches. ✔Correct
Answer-7 3/4 inches
,The minimum required headroom above a stairway is _________. ✔Correct Answer-6 feet 8
inches
A stairway that is _____ inches or more wide must have two handrails. ✔Correct Answer-48
inches
A weep screed should be placed ____ inches above grade. ✔Correct Answer-4 inches
Swimming pool barriers must be at least ___ feet above grade. ✔Correct Answer-4 feet
There must be at least _____ of clearance in front of the toilet to any wall, fixture or door.
✔Correct Answer-21 inches
In new-construction homes, the minimum pipe size for the main water supply line is ______.
✔Correct Answer-3/4 inch
Plumbing vent stacks should terminate at least _____ above the roof line. ✔Correct Answer-6
inches
Plumbing stacks should terminate ____ feet horizontally from a window. ✔Correct Answer-10
feet
The service entry size for a 200-amp service is ___________. ✔Correct Answer-#2/0 gauge
copper
The only suitable receptacles for use with aluminum wire should be marked ___. ✔Correct
Answer-CO/ALR
A service mast must be used with a service drop if the _____________. ✔Correct Answer-
Weatherhead does not clear the roof by 3 feet
Most residential construction requires two separate grounding electrodes that need to be at
least ____ feet apart. ✔Correct Answer-6 feet
In a steam-heating system, the operating cut-off control is set at _____ psi. ✔Correct Answer-
2 to 3 psi
The typical range at which a fan/limit switch will turn the blower on is _______. ✔Correct
Answer-130 to 150 degrees
Pressure-reducing valves on hot-water heating systems are typically set at_____. ✔Correct
Answer-30 psi
, For a conventional gas furnace, about ________ per 1,000 BTUs of ventilation for combustion
air should be provided. ✔Correct Answer-2 square inches
The minimum clearance from a single wall exhaust flue on a conventional oil furnace to
combustibles is ____ inch(es). ✔Correct Answer-9 inches
Railings around the top of open stairwells should be at least _____ inches high. ✔Correct
Answer-36 inches
A fireplace hearth should extend beyond the front of the fireplace by at least _____ inches.
✔Correct Answer-16 inches
The total R-value for loose fiberglass when you see about 6 inches thick of insulation at the floor
of the unfinished attic is approximately _____. ✔Correct Answer-6 inches x 2.5 = 15 R-value
Plumbing and heating pipes that pass through unheated areas should be insulated to a
minimum of _____. ✔Correct Answer-R-4
The R-value per inch of vermiculite is _____. ✔Correct Answer-2.7
Rooftop and gable vents should account for _______ of the total venting, and should be
situated on the ______ side of the roof relative to wind direction. ✔Correct Answer-55%
leeward
According to the UBC, 1 square foot of ventilation is recommended for every _____ square feet
of area in a crawlspace. ✔Correct Answer-150
In moderate climates, most houses have HVAC systems sized at 1 ton of cooling for every
_______ square feet of interior area. ✔Correct Answer-700 to 1000
The life expectancy of a compressor is about _______ years. ✔Correct Answer-10 to 15
In a central air conditioner, the temperature drop across the plenum coil should be about
_____________. ✔Correct Answer-14 to 22 degrees
At least ____ feet of clearance should be provided in front of the main electrical panel for
inspection, service and repair. ✔Correct Answer-3 feet
The exterior electrical service entrance conduit should be secured to the side of the home
_____________. ✔Correct Answer-5 to 6 feet
Cables should be secured (usually by staple) within _____ inches of the electrical service panel.
✔Correct Answer-12 inches
Answers |Latest Version |Already Graded A+
In slab-on-grade construction, the top of the foundation should be ____ inches above grade in
order to protect the exterior wall structure and finish from moisture. ✔Correct Answer-8
inches
The ends of a joist, beam or girder should have at least 1 and 1/2 inches (38 mm) of bearing on
wood or metal and have at least _____ inches of bearing (76 mm) on masonry or concrete.
✔Correct Answer-3 inches
The maximum distance between foundation anchor bolts is ____ feet. ✔Correct Answer-6
feet
An anchor bolt should be within ____ inches of the end of the sill plate. ✔Correct Answer-12
inches
The maximum depth for a notch in a beam or joist is ______ the board's depth. ✔Correct
Answer-one-sixth
The maximum depth for a notch at the end of a joist is _____ the joist's depth. ✔Correct
Answer-one-sixth
A hole may be bored no closer than _____ from the top or bottom of a joist. ✔Correct
Answer-2 inches
A non-bearing partition stud can be _____ notched. ✔Correct Answer-40%
When the span of a header is greater than ____ feet, it's necessary to double the trimmer and
header rafters. ✔Correct Answer-4 feet
The maximum span for a 2x6 purlin is _____ feet. ✔Correct Answer-6 feet
The minimum required headroom above an attic access opening is ____ inches. ✔Correct
Answer-30 inches
The minimum height for a guardrail is ____ inches. ✔Correct Answer-36 inches
On a stairway, the maximum rise is ____ inches, and minimum run is 10 inches. ✔Correct
Answer-7 3/4 inches
,The minimum required headroom above a stairway is _________. ✔Correct Answer-6 feet 8
inches
A stairway that is _____ inches or more wide must have two handrails. ✔Correct Answer-48
inches
A weep screed should be placed ____ inches above grade. ✔Correct Answer-4 inches
Swimming pool barriers must be at least ___ feet above grade. ✔Correct Answer-4 feet
There must be at least _____ of clearance in front of the toilet to any wall, fixture or door.
✔Correct Answer-21 inches
In new-construction homes, the minimum pipe size for the main water supply line is ______.
✔Correct Answer-3/4 inch
Plumbing vent stacks should terminate at least _____ above the roof line. ✔Correct Answer-6
inches
Plumbing stacks should terminate ____ feet horizontally from a window. ✔Correct Answer-10
feet
The service entry size for a 200-amp service is ___________. ✔Correct Answer-#2/0 gauge
copper
The only suitable receptacles for use with aluminum wire should be marked ___. ✔Correct
Answer-CO/ALR
A service mast must be used with a service drop if the _____________. ✔Correct Answer-
Weatherhead does not clear the roof by 3 feet
Most residential construction requires two separate grounding electrodes that need to be at
least ____ feet apart. ✔Correct Answer-6 feet
In a steam-heating system, the operating cut-off control is set at _____ psi. ✔Correct Answer-
2 to 3 psi
The typical range at which a fan/limit switch will turn the blower on is _______. ✔Correct
Answer-130 to 150 degrees
Pressure-reducing valves on hot-water heating systems are typically set at_____. ✔Correct
Answer-30 psi
, For a conventional gas furnace, about ________ per 1,000 BTUs of ventilation for combustion
air should be provided. ✔Correct Answer-2 square inches
The minimum clearance from a single wall exhaust flue on a conventional oil furnace to
combustibles is ____ inch(es). ✔Correct Answer-9 inches
Railings around the top of open stairwells should be at least _____ inches high. ✔Correct
Answer-36 inches
A fireplace hearth should extend beyond the front of the fireplace by at least _____ inches.
✔Correct Answer-16 inches
The total R-value for loose fiberglass when you see about 6 inches thick of insulation at the floor
of the unfinished attic is approximately _____. ✔Correct Answer-6 inches x 2.5 = 15 R-value
Plumbing and heating pipes that pass through unheated areas should be insulated to a
minimum of _____. ✔Correct Answer-R-4
The R-value per inch of vermiculite is _____. ✔Correct Answer-2.7
Rooftop and gable vents should account for _______ of the total venting, and should be
situated on the ______ side of the roof relative to wind direction. ✔Correct Answer-55%
leeward
According to the UBC, 1 square foot of ventilation is recommended for every _____ square feet
of area in a crawlspace. ✔Correct Answer-150
In moderate climates, most houses have HVAC systems sized at 1 ton of cooling for every
_______ square feet of interior area. ✔Correct Answer-700 to 1000
The life expectancy of a compressor is about _______ years. ✔Correct Answer-10 to 15
In a central air conditioner, the temperature drop across the plenum coil should be about
_____________. ✔Correct Answer-14 to 22 degrees
At least ____ feet of clearance should be provided in front of the main electrical panel for
inspection, service and repair. ✔Correct Answer-3 feet
The exterior electrical service entrance conduit should be secured to the side of the home
_____________. ✔Correct Answer-5 to 6 feet
Cables should be secured (usually by staple) within _____ inches of the electrical service panel.
✔Correct Answer-12 inches
