a. slate/concrete tile
b. asphalt
c. fiberglass
d. tar & gravel with ballast
Slate/concrete tile
Wood shingle/shakes should be spaced how far apart?
a. 3/8”
b. 5/8”
c. 1/2”
d. 3/4”
3/8”
Flat roofs – what is the most common cause of leaking?
a. seams
b. ponding
c. parapet walls
d. gutters
Parapet walls
What does water ponding cause?
a. shortens life expectancy
b. promotes fungi & moss growth
c. allows seepage
d. all of the above
All of the above
Flat roofs – what is the cause of blisters?
a. rotted underlayment
b. poor grade of shingles
c. air & water trapped between layers
d. loss of UV protection
Air & water trapped between layers
Asphalt shingle valley overlap required
a. 12” closed cut or woven
b. 6” open
c. 6” open or closed
d. 18” closed
12” closed cut or woven
Type(s) of insulation used with a flat roof
a. urethane
b. fiberglass
c. polystyrene
d. all of the above
All of the above
Cap flashing is required over a parapet wall
a. true
b. false
true
A 3-tab asphalt shingle can be installed on pitches as low as 2/12 if the roof:
a. never
b. if the roof has a hot tar roof coating
c. if there are two layers of roofing felt under the shingles
d. only if you use a 30-year shingle
if there are two layers of roofing felt under the shingles
What is the most durable roof covering
a. slate
b. wood
c. asphalt
d. metal
slate
When does a built-up roofing need flood coating
a. delamination
b. stain on ceiling
c. tar paper is showing
d. gravel is embedded in tar
Tar paper is showing
Where is roof most likely to leak when re-roofing
a. edge
b. penetrations
c. valleys
d. gable ends
penetrations
A built-up roof having a lap joint over 12” is a
a. 3-ply
b. 6-ply
c. 2-ply
d. 4-ply roof
3-ply
Wood shakes/shingles are best maintained by
a. applying a quality oil-based paint annually
b. applying a quality waterproof sealer annually
c. allowing them to age naturally
d. washing annually with a chlorine solution to remove mildew and soil
applying a quality waterproof sealer annually
Metal roofs are best protected by
a. properly maintaining with paint
b. finished with brush-on bitumen coating
c. allowing them to age naturally
d. electrolytically applied terns
properly maintaining with paint
Which of the following is not suited to a roof with a 2/12 pitch
a. asbestos cement shingles
b. roll asphalt
c. asphalt shingles
d. urethane foam
Asbestos cement shingles
What does a drip edge do
a. stops ice damming
b. protects the parts below it like the fascia, siding, etc.
c. protects the ridge vents
d. prevents cupping of shingles
protects the parts below it like the fascia, siding, etc.
Skylight curbing must extend above the roof a minimum of
a. 4”
b. 6”
c. 2”
d. 8”
4”
What should you do if you come across a snow-covered roof
a. remove the snow and inspect as usual
b. note the snow and inspect as usual
c. note the snow and lack of visibility and access
d. say nothing and inspect as usual
note the snow and lack of visibility and access
A copper-to-steel connection undergoes a/an
a. chemical reaction
b. electrolytic reaction
c. nuclear reaction
d. thermal reaction
electrolytic reaction
What causes water hammer
a. loose pipes
b. instantaneous closing valves
c. hydrostatic shock
d. all of the above
All of the above
Name three common locations of cross connections in a plumbing system
a. bidet, garden hose and boiler connection
b. toilet, sink and bidet
c. garden hose, laundry tubs and toilet
d. boiler connection, toilet and lawn sprinklers
bidet, garden hose and boiler connection
Name two locations to install a check valve in a house with combination sewers to reduce the risk of backup into the basement
a. floor drains and main drain line
b. basement sink and toilets
c. hose bibs and pool self-fill mechanisms
d. none of the above
floor drains and main drain line
The recommended slope for waste plumbing is typically
a. 1/4” per foot
b. 1/2” per foot
c. 3/4” per foot
d. 1” per foot
1/4” per foot
What type of trap is no longer used in residential construction
a. S-trap
b. P-trap
c. Q-trap
d. V-trap
S-trap
Describe the function of a trap primer
a. to remove water to prevent overflowing of floor drain
b. to add water to the trap to replace water lost through evaporation
c. to increase the amount of water consumed in the trap
d. to allow siphoning of the trap
to add water to the trap to replace water lost through evaporation
The most common clue to a venting problem is
a. sewer odor
b. gurgling drains
c. slow drains
d. all of the above
All of the above
A vent pipe does not need to extend past the attic
a. true
b. false
false
What is the minimum diameter and extension above the roof line of a vent pipe
a. 4” diameter, 12” extension
b. 3” diameter, 10” extension
c. 3” diameter, 6” above the snow line
d. 2 1/2” diameter, 8” extension
3” diameter, 6” above the snow line
What is a wet vent
a. a vent that protects the roof in the rain
b. a vent that is never dry
c. a vent that also serves as a drain
d. a vent that is larger than a dry vent
a vent that also serves as a drain
Describe a French drain or dry well
a. a gravel pit that accepts waste from the plumbing system
b. a drain installed by a Frenchman
c. can be used instead of a septic system
d. a buried gravel pit designed to allow water to accumulate quickly and dissipate slowly by soaking into the soil
a buried gravel pit designed to allow water to accumulate quickly and dissipate slowly by soaking into the soil
A temperature pressure relief valve on a water heater that is installed above the tank in the pipe is wrong – why
a. must be installed within the top 8” of the tank
b. must be installed within the top 6” of the tank
c. not required to be installed in the tank at all
d. not required in older systems
must be installed within the top 6” of the tank
Temperature/pressure relief valves are typically rated at
a. 100 psi and 212°
b. 150 psi and 210°
c. 210 psi and 150°
d. 110 psi and 210°
150 psi and 210°
What is the maximum length of a flexible gas appliance connector to a dryer or range
a. 6’
b. 3’
c. 18”
d. 48”
6’
How do you check if a shower door has safety glazing
a. marked in the corner
b. glass will be foggy
c. wire mesh
d. hit it with a hammer
Marked in the corner
If a natural gas appliance is changed to LP gas, you need
a. a smaller orifice
b. a larger orifice
c. change gas valve assembly
d. you can’t change from gas to propane
A smaller orifice
How much water does a modern residential toilet discharge into the waste system
a. 1.6 lpf
b. 1.6 gpf
c. 2.5 gpf
d. 3.5 gpf
1.6 gpf
Copper and galvanized steel can be joined by what method
a. brass converter fitting
b. di-electric union
c. dimorphic union
d. both a and b
Both brass converter fitting and di-electric union
A flexible appliance connector can be cut
a. true
b. false
false
Two 3-foot appliance connectors can be connected to make a 6-foot connection
a. true
b. false
false
What kind of connector is needed to attach a plastic DWV to cast iron DWV
a. hubless
b. hopeless
c. PVC to ABS
d. CPVC
hubless
Gas water heaters are allowed in all of the following locations except
a. basements accessible only from interior stairs
b. attics accessible only from a permanent ladder
c. storage closets
d. laundry rooms open to the living area
Storage closets
Plumbing vent must terminate at least
a. 10' from window and 6" above roof
b. 6' from window and 10" above roof
c. 7' from window and 12" above roof
d. 4' from window and 6" above roof
