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Practice Test 2

Building sewers shall be tested by completely filling the sewer with water from the ____
Lowest to the highest point
Lowest to at least a 5 ft. head
Lowest to at least a 10 ft. head
Lowest to at least ground level
Except for plastic piping systems, hot and cold water piping may be tested with ____
40 psi air or 150 psi water for 10 min.
35 psi air for at least 15 min.
50 psi air or the working pressure of the water in the system for at least 15 min.
100 psi air for at least 10 min.
The required clearance in fron t of a 2 inch cleanout is ____
8 in.
12 in.
18 in.
24 in.
A stack, as defined in the code, is _____
The main vent
Any vertical vent
The vertical main of soil, waste, or vent piping that extends one or more stories.
The horizontal main of soil, waste, or vent stack.
Under no circumstances may gas appliance pressure regulators be vented ____
To the atmosphere
To the combustion chamber near the pilot
To the gas utilization equipment flue or exhaust system
Using black iron pipe
Aboveground schedule 40 PVC and ABS DWV plastic piping installed horizontally shall be supported at intervals of not to exceed ____
4 ft.
6 ft.
10 ft.
12 ft.
The maximum horizontal distance of a trap arm is measured from the inner edge of the vent to the ____
Weir of the trap
Dip
Inlet
Outlet
Sleeves shall be provided to protect all piping through ___and____walls.
Floors, concrete
Concrete, masonry
Wood, concrete
None of the above
PEX piping installed horizontally must be supported every ___ inches
24
32
36
48
The minimum common horizontal waste pipe serving a bathtub, a lavatory, and a kitchen sink shall be at least ___
1 1/2 in
2 in
2 1/2 in.
3 in.
The required clearance in front of a 3 inch cleanout is ___
6 in
12 in
18 in
24 in
A refrigerator used to store food and that requires drainage shall be drained by means of _____
An indirect waste pipe
A direct connection
Both A and B
No drain required
One material not approved for the installation of an external trap for a urinal is ____
Cast iron
Cast brass
Drawn-brass tubing traps
ABS
Hub and spigot cast-iron piping in 10-foot lengths, installed horizontally, shall be supproted at intervals of not more than ____
5 ft.
10 ft.
12 ft.
15 ft.
A drain connecting the compartments of a set of fixtures to its trap is called a (an) _____.
Continous waste
Combination waste and vent
Indirect waste
Special waste
A device to prevent backflow into the potable water system is called a ______
Backflow Connection
Backflow Preventer
Back-siphonage
Siphon Leg
Copper tube and fittings used for drainage and vent piping installed aboveground shall be at least ______
Type L
Type K
Type M
Type DWV
A _____ may be installed with indirect waste.
Water closet
Domestic kitchen sink
Lavatory
Drinking Fountain
Vitrified clay building sewer pipe and fittings are ____
Approved for use at least 12 in. belowground
Approved for use inside of buildings and aboveground
Unrestricted in use for drain lines
Unrestricted in use for vent lines
Cast-iron soil pipe shall not be ______
Used for drain line
Used belowground
Painted
Threaded
All trenches deeper than the footing of any building or structure and paralleling the same must be at least _____
45 Deg. therefrom
4 ft. therefrom
2 ft. Wide
2 ft. Deep
Sewer or other drainage piping that shall not be installed under or within 2 ft. Of any building or structure is _____
Asbestos cement
Cast iron
ABS
Copper
Cast-iron soil pipe stacks shall be supported at _____
Their base and each floor
Every other story
Intervals of 10 ft.
Intervals of 5 ft.
Water service pipes, or any underground water pipes, shall not be run or laid in the same trench with ______
Asbestos cement building sewer piping
Cast-iron building sewer piping
Piping for a lawn sprinkler
Any other water pipe
Notifications for inspection of work authorized by the permit shall be made _____
On the morning of the day inspection is requested
24 hours before the work is to be inspected
Orally to the inspector
In writing to the owner
Except for plastic piping, the use of a 50 psi air test in lieu of the working pressure water test is allowed by code for ____
Drain piping
Sewer piping
Water piping
Gas piping
The minimum size waste pipe for a residential kitchen sink is _______
1-1/2 in
2 in
2-1/2 in
3 in
The minimum size trap and trap arm for a kitchen sink is _____
1-1/2 in
2 in
2-1/2 in
3 in
Horizontal drainage lines connecting with other horizontal drainage lines shall enter through ____
45-degree Y branches
Sanitary tee branches
Tapped tee branches
A side inlet quarter bend
In each run of horizontal drain piping, the distance between cleanouts shall not exceed _____
50 ft.
75 ft.
100 ft.
300 ft.
Three-inch horizontal drainage piping shall be run in practical alignmnet and at a unifrom slope of not less than _____
1/16 in per foot
1/8 in per foot
1/4 in per foot
1/2 in per foot
Where a fixture is installed on a floor level below the elevation of the next upstream manhole, shall be protected from backflow of sewage by _______
An inverted wye
A gate valve
A backwater valve
A globe valve
An ejector discharge line shall be provided with a _______
Backwater valve only
Gate valve only
Back water vlave and gate valve
Swing check valve and a globe valve
A plumbing vent shall terminate not less than ______
3 ft. From an air intake
10 ft. From an air intake
1 foot above the roof
5 feet above a window
Each drainage stack that extends 10 or more stories above the building drain shall be served by ______
Cleanouts at each floor
A parallel vent stack
Extra-heavy fittings
Straps every 5 feet
A domestic dishwasher drain shall first connect to ______
An approved airgap fitting
A double-check valve
A backflow valve
A Hartford loop
An indirect waste pipe 12 feet long requires ______
A trap and vent
A vent only
A trap only
No trap or vent
Drinking fountains may be installed with ________
Indirect wastes
Bell traps
Steel pipe
Yoke venting
Special venting for island fixtures is used for ______
Bathtubs
Showers
Kitchen sinks
Water closets
A branch line serving a trap in a combination waste and vent system is required to be separately vented when the length of the branch exceeds ____-
5 feet
10 fet
15 feet
25 feet
A vent in combination waste and vent system shall be approximately equal in area to one-half the ______
Cross-sectional area of the drain pipe served
Diameter of the drain pipe served
Area of the house sewer
Area of the public sewer
One trap may serve a set of not more than ________
Three single-compartment sinks
Two double-compartment sinks
Two lavatories
Three showers
The vertical distance between a fixture outlet and the trap weir shall not exceed
12 in
18 in
24 in
36 in
Fixture traps shall have a water seat of not less than _____
2 in
4 in
6 in
12 in
The minimum horizontal distance between a water supply well and the building sewer is _____
10 ft.
15 ft.
50 ft.
100 ft.
Three-quarter inch or 1-inch gas piping installed horizontally shall be supported at intervals not to exceed _____
4 ft.
5 ft.
6 ft.
8 ft.
Unions shall be installed in a water supply system within _____to a water heater
12 in
24 in
36 in
48 in
Wall-mounted water closet fixtures shall be securely bolted to _____
The vent piping
The drain piping
Metal supporting memebers
A closet bend
Joints at the roof around pipes shall be made watertight by the use of _____
Tar and paper
Flashings
Waterproof paint
Epoxy glue
Soil and drain pipes located above food-handling establishments shall be subjected to a stranding water test of not less than ___ feet
10
12
15
25
Concealed slip joint connections require a (an)
8x12 access panel
10x12 access panel
12x12 access panel
18x18 access panel
A seamless drawn-brass fixture tailpiece shall be ___
20 B&S Gauge
22 B&S Gauge
24 B&S Gauge
26 B&S Gauge
The tailpiece for a lavatory shall not be less than ____
1-1/4 in
1-3/8 in
1-1/2 in
1 in
The distance from the center of a water closet to any side wall or partition shall not be closer than ____
15 in
30 in
12 in
24 in
No trap for any clothes washer standpipe shall be installed _____
6 in above the floor
Below the floor
In a partition
18 in above the floor
The critical level of urinal flushometer vacuum breaker to the highest part of the fixture is ____or the distance according to its listing
1 in
2 in
6 in
12 in
Water closet tank ballcocks shall be installed with the vacuum breaker critical level at least
1 in above the full opening of the overflow tube
6 in above the full opening of the overflow tube
1 in above the flush valve opening
6 in above the flush valve opening
A pressure regulator and strainer are required when the local water pressure is in excess of ____
80 psi
100 psi
125 psi
150 psi
A water system containing storage water-heating a _____
Check valve
Listed combination temperature and pressure relief valve
Hot water return line
Mixing valve
The terminal end of the drain for a pressure-relief valve shall not be
Painted
Open
Threaded
Reamed
Because of structural conditions, a 4-inch house drain is installed with a slope of 1/8 inch per foot. This installation will result in a (an)_____
Seperation of solids and liquid
Increased scouring and cleansing action
Reduction in fixture unit loading allowance
Increased allowance in fixture unit loading
A _____trap is not self-cleaning
Grease
Bell
Cast-iron
Plaster
Ferrous gas piping installed underground in exterior locations shall have at least _____
Four 90-degree elbow
1 foot of earth cover
Two condensation drip legs
One double swing joint
Gas piping supplying more than one building on any one premises shall be equipped with _____
Gate shutoff valves
Globe shutoff valves
Separate shutoff valves to each building
Lubricated shutoff valves
The maximum distance a gas shutoff valve may be from a gas appliance (except for range and dryer connectors) is _____
2 ft.
3 ft.
6 ft.
10 ft.
Leaks in gas piping shall be located by applying _____
A noncorrosive leak detection fluid
Fire or acid to the pipe joints
Soapy water to the exterior of the piping
Potable wter to the interior of the piping tubing
That portion of a venting system that connects a water heater to a vent is a ____
Vent
Vent connector
Chimney connector
Type "B" vent
Minimum clearance of listed appliances to any combustible wall or partition is ____
1 in
Specified in the lsiting or rating plate and NFPA 211 standard
3 in
8 in
No water heater (except direct vent water heaters and fuel burning water heaters installed in a closet with a listed, gasketed door assembly and listed self-closing device) that depends on the combustion of fuel for heat shall be installed in any ____
Garage
Kitchen
Basement
Bedroom
Pilots and burners of gas-fired water heaters (except sealed combustion chambers) in residential garages shall be ___ above the floor level
6 in
12 in
18 in
24 in
Water heater vents terminate above a roof surface at least ___ from a vertical wall
6 in
12 in
3 ft
8 ft
The exit terminals of mechanical draft systems shall be ___
Not less than 7 ft above grade
In the same story
Not over 10 ft. From the vent
Not over 20 ft. From the vent
The sizing of gas vents for category II, III, IV shall be in accordance with ___
The gas company
The vent connector company
The manufacturer's guide
The manufacturer's instructions
Gas utilization equipment located on the roofs of building more than ___shall have an inside means of access to the roof
20 ft.
4 ft. Away from the wall
15 ft. In height
12 ft. In height
Single-wall metal pipe shall be constructed of ____not less than 0.0304 inch thick
Copper sheet metal
Cast iron
PVC Sch 40
Galvanized, sheet metal
Single-wall metal pipe shall terminate at least 5 ft. In vertical height above the highest connected equipment ____
Or approved cap on the roof
Within a horizontal distance of 10 ft.
Draft hood
Draft hood outlet or flue collar
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