National Home Inspectors Exam: Book 1 with all Correct
& 100% Verified Answers |Actual Complete Update |
Already Graded A+
A copper-steel connection undergoes a/an? ✔Correct Answer-Electrolytic reaction
What causes water hammer? ✔Correct Answer-Loose pipes, fast closing valves and
hydrostatic shock
Name the common locations for cross connections? ✔Correct Answer-Bidet, garden hoses,
boiler connections
Locations to install check valves in a house with combination sewer are? ✔Correct Answer-
Main drain and floor drains
The recommended slope for waste plumbing is typically? ✔Correct Answer-1/4" Per foot
What type of trap in no longer used in residential construction? ✔Correct Answer-S-trap
Describe the function of a trap primer. ✔Correct Answer-To add liquid to make up for
evaporation and an open vent for sewer gases to enter home.
What are some common clues to venting problems? ✔Correct Answer-Sewer odors, gurgling
and slow drains
Does a vent pipe need to extend through the attic? ✔Correct Answer-Yes
What is the min. extension of a vent pipe through the roof line to prevent frost/snow closure?
✔Correct Answer-3" diam. and 6" above snow line
What is a wet vent? ✔Correct Answer-A vent that also serves as a drain
Describe a dry well. ✔Correct Answer-A buried gravel pit or drain designed to allow water to
accumulate and dissipate into soil quickly.
Where must a temp. relief valve be installed in a water heater? ✔Correct Answer-Within the
top 6" of the tank
Temp/pressure relief valves are typically rated at what psi and what temperature? ✔Correct
Answer-150 psi and 210 F
, What is the max. length of a flex gas connector to a dryer or range? ✔Correct Answer-6'
How do you check if glass has safety glazing? ✔Correct Answer-Etching in corner
If a natural gas appliance is changed to LP gas you need? ✔Correct Answer-A smaller orifice
How much water does a modern toilet discharge into the waste system? ✔Correct Answer-1.6
GPF
Copper and galvanized steel can be jointed by what method? ✔Correct Answer-Di-electric
unions and brass converter fittings
A flexible appliance connector can be cut? ✔Correct Answer-False
Two 3' appliance connectors can be connected to make a 6' connection? ✔Correct Answer-
False
What kind of connection is necessary to connect a plastic DWV to a cast iron DWV? ✔Correct
Answer-Hubless
Are gas water heaters allowed in storage closets? ✔Correct Answer-No
Plumbing vents must terminate how many feet from windows and how many inches above the
roof? ✔Correct Answer-10' from windows and 6" above roof
Too much slope within horizontal waste lines can cause what? ✔Correct Answer-Siphonage of
the traps
Interior plumbing should be at least ___" in diameter? ✔Correct Answer-1/2"
What type of piping material is primarily used from public water supplies? ✔Correct Answer-
Copper
How many inches apart should uninsulated pipes be from each other? ✔Correct Answer-6"
How can you test if there is a downdraft with a gas water heater? ✔Correct Answer-Watch
the lean of a match near the draft hood
Should a well technician be called if the pump is overly noisy? ✔Correct Answer-Yes
How many feet apart should a private well be from a septic system? ✔Correct Answer-75'
How many volts of electricity are almost all residential single phase homes? ✔Correct
Answer-240/120
& 100% Verified Answers |Actual Complete Update |
Already Graded A+
A copper-steel connection undergoes a/an? ✔Correct Answer-Electrolytic reaction
What causes water hammer? ✔Correct Answer-Loose pipes, fast closing valves and
hydrostatic shock
Name the common locations for cross connections? ✔Correct Answer-Bidet, garden hoses,
boiler connections
Locations to install check valves in a house with combination sewer are? ✔Correct Answer-
Main drain and floor drains
The recommended slope for waste plumbing is typically? ✔Correct Answer-1/4" Per foot
What type of trap in no longer used in residential construction? ✔Correct Answer-S-trap
Describe the function of a trap primer. ✔Correct Answer-To add liquid to make up for
evaporation and an open vent for sewer gases to enter home.
What are some common clues to venting problems? ✔Correct Answer-Sewer odors, gurgling
and slow drains
Does a vent pipe need to extend through the attic? ✔Correct Answer-Yes
What is the min. extension of a vent pipe through the roof line to prevent frost/snow closure?
✔Correct Answer-3" diam. and 6" above snow line
What is a wet vent? ✔Correct Answer-A vent that also serves as a drain
Describe a dry well. ✔Correct Answer-A buried gravel pit or drain designed to allow water to
accumulate and dissipate into soil quickly.
Where must a temp. relief valve be installed in a water heater? ✔Correct Answer-Within the
top 6" of the tank
Temp/pressure relief valves are typically rated at what psi and what temperature? ✔Correct
Answer-150 psi and 210 F
, What is the max. length of a flex gas connector to a dryer or range? ✔Correct Answer-6'
How do you check if glass has safety glazing? ✔Correct Answer-Etching in corner
If a natural gas appliance is changed to LP gas you need? ✔Correct Answer-A smaller orifice
How much water does a modern toilet discharge into the waste system? ✔Correct Answer-1.6
GPF
Copper and galvanized steel can be jointed by what method? ✔Correct Answer-Di-electric
unions and brass converter fittings
A flexible appliance connector can be cut? ✔Correct Answer-False
Two 3' appliance connectors can be connected to make a 6' connection? ✔Correct Answer-
False
What kind of connection is necessary to connect a plastic DWV to a cast iron DWV? ✔Correct
Answer-Hubless
Are gas water heaters allowed in storage closets? ✔Correct Answer-No
Plumbing vents must terminate how many feet from windows and how many inches above the
roof? ✔Correct Answer-10' from windows and 6" above roof
Too much slope within horizontal waste lines can cause what? ✔Correct Answer-Siphonage of
the traps
Interior plumbing should be at least ___" in diameter? ✔Correct Answer-1/2"
What type of piping material is primarily used from public water supplies? ✔Correct Answer-
Copper
How many inches apart should uninsulated pipes be from each other? ✔Correct Answer-6"
How can you test if there is a downdraft with a gas water heater? ✔Correct Answer-Watch
the lean of a match near the draft hood
Should a well technician be called if the pump is overly noisy? ✔Correct Answer-Yes
How many feet apart should a private well be from a septic system? ✔Correct Answer-75'
How many volts of electricity are almost all residential single phase homes? ✔Correct
Answer-240/120
