Arizona Plumbing RC-37
Back-to-back water closet connections to double sanitary tees shall be permitted where the horizontal developed length between the outlet of the water closet and the connection to the double sanitary tee pattern is a minimum of inches
18
Refer to the illustration, what is the c- (center to center) length of "K"?
18 3/8 inch.
Clearance around boilers must be provided to allow access for inspection, maintenance, and repair. Passage ways shall have an unobstructed width of
18 inches
Question ID 560 What minimum height should a gas water heaters pilot light be above the garage floor ?
18 inches
Standpipe receptors for clothes washers shall extend above the trap not less than:
18 inches
What is the minimum clearance in front of a 3 inch cleanout?
18 inches
What is the minimum diameter of a sump pit being installed in a basement?
18 inches
When soldering an adapter from plastic to metal on hydronic systems, how far from the soldered metal portion should the plastic (dielectric union) be?
18 inches
A work permit becomes invalid if no work is done for how many days?
180
A seepage pit has a diameter of 5 feet and a depth of 12 feet. What is the sidewall surface area?
188 square feet
What fixture unit load does each gallon per minute (GPM) of a continuous flow pump or similar fixture produce?
2 FU
While trenching and excavating, OSHA requires that employees be protected from excavated materials and other materials stored near the trench or excavation. These materials must be at least of from the trench or excavation.
2 feet
Given: A bath tub spout with an effective opening of 1 inch in diameter is not effected by the nearest side wall. What minimum distance is required for the tub fillers air gap?
2 inch
Given: Three (3) lavatories are connected to one trap. According to the Code, what is minimum size of this trap?
2 inch
s piping systems demand is 1,000,000 BTU's and has a developed ih of 75 feet. The specific gravity is 0.60, with a pressure drop of 0.5 es of water column. The heating value of the gas is 1000. Using edule 40 metallic pipe, what minimum pipe size is required to supply system? (Note: BTU's, developed length, specific gravity, pressure , and type of pipe can all change, know how to work and use the 35 rent tables.)
2 inch
According to code, in disposal fields and trenches, the filter material over drain lines shall be a minimum of
2 inches
According to code, the size of any pump or discharge pipe from a sump (ejector) having a water closet connected there to shall not be less than?
2 inches
Conduit for gas piping and or gas piping extending and terminating through floors shall extend not less than how many inches above the floor?
2 inches
What is the minimum size drain pipe allowed for a clothes washer?
2 inches
What is the required diameter of a vent for a 3 inch waste stack with a total of 53 Drain Fixture Units and a vent having 72 feet of developed length?
2 inches
Hospitals shall have backup systems of:
2 water supply systems
What size of hose thread is commonly used for a siamese hose connection?
2-1/2 inch
You have a hub (benchmark) elevation of 102.20; You read 5.12 to the hub (backsite); You have a required elevation in the ditch bottom of 93.50; You read an existing grade of 11.50. What is the difference between the existing and the required?
2.32
How many water closets are required for a dormitory that houses 200 giris?
20
What is the minimum pressure for a water closet flushometer tank?
20 PSI
A section of a water main pipe has been repaired and must be back in operation within 12 hours (less than 24 hours). The section shall be filled with a water/chlorine solution containing how many parts per million of chlorine
200
You are getting ready to turn on a 12 inch water main, this has to be done in 12 hours. What is the amount of chlorine needed for this?
200 ppm
What is the maximum drainage fixture unit capacity of a 4 inch drai pipe with 1/4 inch per foot slope?
216 DFU
What is the minimum distance a gas line must be from the edge of a wood stud if the pipe is not Cast Iron or schedule 40 metallic pipe?
1-1/2 inch
In a residence that exceeds 2000 sq ft, the fire department connections shall be at least:
1-1/2 inches
On a black Iron qas pipe installed in a wood frame wall by boring through the studs, what is the minimum distance from the edge of the stud that a nail plate will be required?
1-1/2 inches
A schedule 40 metallic pipe gas supply line supplies natural gas to a 100,000 BTU furnace, a 50,000 BTU water heater, a 60,000 BTU range and a 80,000 BTU fireplace. The most remote appliance is 72 feet from point of delivery. Assume the gas has a specific gravity of .60, BTU per CF is 1000 BTU per hr., inlet pressure is 6-8 inches w/ and pressure drop is .5 inch w/c. What is the required diameter of the supply pipe that is connected to the meter?
1-1/4 inch
Blue Stake in Arizona has a Tolerance Zone that includes the width if the facility plus measured from each side of the marked facility. Excavation taking place within this tolerance zone requires that hand tools be required to expose the facility.
24 inches
What is the maximum height that a drain line from a water heater pan can terminate above ground level?
24 inches
To insure proper compactness around piping, trenches shall be backfilled with clean earth in 6 inch layers to at least the top of the pipe; there after deeper layers are permitted.
12
What is the minimum number of spare fire sprinkler heads required to be Keep in a building where there are 313 sprinkler heads installed?
12
What is the minimum approved wall thickness of any approved steel septic tank?
12 US gauge
A 3/4 inch steel pipe horizontally mounted shall be supported at intervals of no more than?
12 feet
The minimum horizontal clear distance required between seepage pits is:
12 feet
What is the maximum spacing for hanger supports for a 1 inch horizontal steel pipe?
12 feet
Before a backhoe or grader can complete the backfill what minimur depth of clean fill is required over the top of a sewer pipe?
12 inches
Given: A water service pipe is to be installed in a trench with a sewer pipe. What minimum vertical distance is required between the bottom the water service pipe and the top of the sewer pipe?
12 inches
The minimum width of a trench bottom in a disposal field is:
12 inches
Thickness of aggregate material under a disposal pipe shall be a minimum of
12 inches
Vhat minimum depth of earth cover is required for LP (Liquefied Petroleum) gas lines?
12 inches
What is the maximum required clearance from the ceiling (upper) for combustion air using a 2 vent system for a gas water heater in a confined space?
12 inches
What is the minimum earth cover required for a gas line buried outside a residence?
12 inches
What is the required minimum vertical separation between a potable water supply line over a clay sewer pipe?
12 inches
Refer to the illustration, what is the c- (center to center) length of "N"? (Assume print is to scale)
12-5/8 inches
Refer to the illustration, what is the total developed length of pipe fi point A to point C?
14 feet
Vertical cast iron drain pipes must be supported at each floor not to exceed feet.
15
After Blue Stake has marked facilities, how many working days are the markings good for?
15 days
When installing a pipe that can carry a maximum of 7,000 FU at a slope of 1/16 in per ft, what is the minimum pipe size?
15 inch diameter
How much does 256 cubic feet of water weigh?
15,974 pounds
What is the PSI setting from the factory of a temperature/pressure valve in a hot water heater?
150 psi
According to the Code, what minimum size septic tank is needed for a 5 bedroom house with a garbage disposal?
1500 gallons
What is the minimum nail plate thickness used to protect pipe in a wall?
16 gauge (0.0575)
water supply pipe that is to be installed underground shall have a inimum PSI working pressure of at a temperature of 73.4 grees F
160
What is the minimum working pressure rating of PVC piping used underground for water service piping?
160 PSI
A 4 inch cleanout must have at least______inches of clear space horizontally in front of it.
18
Conduit for gas piping installed under a footing and terminating outdoors shall extend how far outside the building?
4 inch
What is the minimum size of a cleanout for a 10 inch drain?
4 inch
What is the size of the leader for a roof surface area of 2930 square feet? Assume a 4 inch rainfall rate.
4 inch
Each fixture trap shall have a water seal of not more than:
4 inches
Gas piping (other than black or galvanized steel)run through bored holes in studs that are 7/8 of an inch from the nearest edge shall be protected by a steel plate that extends how many inches to each side of a stud, joist or rafter?
4 inches
What is the closest OD (outside diameter) of a 4 inch schedule 40 steel pipe?
4-5/8 inches
What is the maximum spacing of lateral bracing for a wet pipe fire protection sprinkler system main supply pipe?
40 feet
The maximum distance between manholes in a building sewer 8 inches or larger shall not exceed feet.
400
An appliance manufacturer requires a sediment trap be installed. Where is the sediment trap installed?
After the shut off to the appliance, and as close to the appliance as practical.
What medium is used to test LP fuel gas piping?
Air
Refer to the illustration, what is "E"?
Air gap
The Code defines the point at which a water softener backwash drain discharges above the flood level rim of a floor drain as?
Air gap
Vertical gas piping, 2 inches in diameter shall be supported at what maximum intervals?
At every floor
The Code defines the flow of liquids into the distributing pipes of a potable water system from any source other then its intended source a:
Back-flow
Screws and bolts securing water closets to the floor plane may be made of.
Brass
Embedded copper to copper joints are required to be:
Brazed
Mechanically formed tee fittings shall be____?
Brazed
n connecting dissimilar metals a_____fitting should be used
Dialéctic
What is a plumbing branch interval in a multi floor building?
Length of drainage stack having two horizontal branch connections at least 8 feet apart.
What is the maximum slope of a disposal pipe?
Level
Hospitals are classified as what type of hazard occupancy?
Light hazard occupancy
What is the cause of pump cavitation?
Pressure on a liquid drops below its vapor pressure
A remote pump for a waterwell is being installed in a basement. Which of the following is required?
Pump is 18 inches above basement surface
Underground utilities are assigned color codes for identification. What color identifies Reclaimed Water?
Purple
Refer to the illustration. What is the name of the backflow prevention device at number four (4)?
RPZ backflow preventer
When installing a vertical vent for an appliance, an angle greater than from vertical is considered a horizontal run.
45 degrees
How many lavatories are required for a school that has 1100 boys and 1200 giris?
46
What is the total length from "A" to "G"?
46.5 feet.
What is the capacity of a 1-1/4 inch diameter schedule 40 metallic natural gas pipe that is 60 feet long with pressure of 2 psi, a pressure drop of 1.0 and Specific Gravity of 0.60?
4660 cu ft per hr
The last support hanger on a fire sprinkler branch of 1 1/4 inch nominal pipe size may be no more than from the end.
48 inches
What is the maximum horizontal support spacing for PEX piping?
48 inches
A flat roof measures 180 x 100 feet. There are 5 roof drains equally spaced on the roof. Given: All drains handle equal area of this roof. sloped at 1/4 inch per foot with a maximum rainfall of 6 inches per h What is the minimum size horizontal pipe required at 'A'?
5
A septic seepage pit shall be excavated______deeper than the proposed pit depth to verify underlying soil characteristics.
5 feet
Backflow prevention devices for hospital bedpan washer hoses shall not be located less than above the floor. Note: All other hose connection in hospital shall not be less than 6 feet above the floor.
5 feet
How close to a driveway can a septic tank be?
5 feet
Question 527 According to OSHA employees shall be protected from cave ins by an adequate protective systems in excavations that equal or exceed a depth of
5 feet
Shoring is required when the bottom of a sewer trench is lower than what minimum depth?
5 feet
What minimum separation is required between a residential septic tank disposal field and a domestic service water line?
5 feet
What minimum pressure is required to test a drainage system with air?
5 psi
A repaired water main need to be disinfected and activated within 30 hours (more than 24 hours). What is the minimum water/chlorine solution that must be put into the main?
50 parts per million
What is the total water supply Fixture Units for 7 units that have 1 bathroom group, 1 kitchen sink, 2 lavatories, and 1 laundry tray each?
55
A church of 500 members, 250 which are men, shall have waterclosets
6
Copper water piping, 1-1/4 inch and smaller, must be supported every feet horizontally.
6
How many fire sprinkler risers are required for a single story wide open 298,000 square foot building rated as ordinary hazard?
6
What is the maximum drainage fixture units that a 4 inch trap arm can drain?
6
A gas heater installed in a private garage shall have a minimu clearance of ?
6 feet
In a private garage, what is the minimum clearance for a heater from the floor?
6 feet
Vacuum breakers for hose connections in healthcare or laboratory areas shall not be less than above floor
6 feet
What maximum distance is allowed between anchors that support horizontal 3/4 inch copper tubing?
6 feet
What maximum distance is allowed between hangers that support horizontal 1 inch copper tubing?
6 feet
A building is 300 feet wide by 300 feet long with a 3/12 pitched gable roof. What is the effective roof area to be used in calculating a roof drainage system for this building?
92,770 square feet
Refer to illustration. A transit rod reading is 5.75 feet. at a benchmark 100 feet. A grade level reading is 10.5 feet. What is the elevation at this point?
95.25 feet.
Which of the following colors best identifies the color used for excavator markings?
White
Refer to the illustration of the ABS vent piping system. What type of fitting is needed at point A?
Wye
The international color code used by utility locators to mark an underground gas line is:
Yellow
Question ID : 1635 Gas piping supplying more than one building on any one premises shall be equipped with :
Separate shutoff valves
Blue Stake uses green to mark which of the following?
Sewer, drains
What is required on a boiler's supply and return lines?
Shutoff valve
Hydronic piping passing through concrete from floor to floor, the holes should be
Sleeved
A gas pipe is being run through a oversized hole in a concrete wall, what should be done to hole?
Sleeved and sealed
Which of the following are not approved ends of cast iron pipe?
Slip
The distance between 2 pipes running in parallel is called the
Spread
Which is true about fire sprinklers?
Sprinklers with green marking have a temperature classification of extra-high
Which of the following in an extension of a waste stack meant to provide venting?
Stack Vent
What is the unobstructed vertical distance from a discharge pipe to the flood level rim of a fixture?
air gap
What is the name of the device in a hot water heating system that allows trapped air to escape from the system?
air vent
The discharge from a reverse osmosis drinking water treatment unit shall enter the drainage system through
an air gap
a building sewer shall have a cleanout:
at intervals less than 100 feet
When connecting a water source to a boiler the supply pipe shall have which of the following?
backflow preventer and intermediate atmospheric vent.
Hard drawn type L copper tubing shall be marked by a indelible 1/4 inch wide strip of what color?
blue
Which of the following colors best identifies the blue stake marking for potable water?
blue
Where is a cadmium cell located or installed on an oil burner ignition system?
by inline with the pilot flame
Given an isometric of a waste venting system, at what maximum length will pipe K need to up sized to the next larger size? (we do not have the isometric; assume 8 fixture units, 1-1/2 inch waste stack, and 1-1/4 vent for the purpose of this question)
more than 50 feet
When testing a fuel gas line for leaks, the testing medium shall be air, co2 or:
nitrogen
A number 18 copper tracer wire or other approved material shall be installed with and adjacent to underground
non-metallic gas piping
Employees are working in an excavation where no precautions are in place to protect them against the effects of accumulated water. According to OSHA how much water is allowed to accumulate in the hole before they must stop?
none, no accumulated water is allowed
An gas supply line using a threaded connection between black iron pipe and plastic pipe is allowed
only outside and underground
Which of the following testing mediums shall not be used to pressure test a fuel gas piping system?
oxygen
On a gas shutoff cock valve, the handle should be____in the on Position.
parallel to the pipe
A BTU is defined to be the amount of heat required to raise the temperature of one:
pound of water by 1 degree Fahrenheit
All of the following materials are approved for the construction of septic tanks EXCEPT:
pressure treated redwood
A pressure regulator for a gas meter located inside of a building shall be
properly vented
When joining PVC piping, what type adhesive should be used?
purple primer and uncolored solvent cement
What gas piping inspection shall be made before all piping has been covered or concealed?
rough piping inspection
Given: Color codes have been assigned to identify location of underground utilities. Fiber optics communication lines are identified by the letter 'F' and what color?
safety alert orange
Given: Color codes have been assigned to identify locations of underground utilities. What color identifies telephone and telegraph systems?
safety alert orange
Underground utilities are assigned color codes for identification. What color identifies electric power distribution and transmission lines?
safety red
Condensate from all cooling coils and evaporators shall be conveyed from the drain pan outlet to all of the following except?
street or alley
Waste water is being discharged from a hospital at 150 degrees F into a sanitary drainage system, what is required?
the pipe must be rated for the highest temperature.
When 140° temperature water or waste is to be discharged into a drainage system
the pipes must be rated for the highest temperature
Question ID : 3338 A cross connection is :
the point where potable and non - potable water meet
Which of the following statements about fixtures having concealed slip- joint connections is true?
they require access panels
Which of the following affects the size of vent piping?
total developed length of vent
A relief valve shall be installed ?
vertically in the uppermost position.
According to the Code, what is the required test of newly installed septic tank.
water filled to the flow line
Tanks filled with propane shall not be stored:
within a building.
What is the total maximum civil penalty of multiple violations that an unlicensed person acting as a contractor may receive?
$2,500.00
The failure of a contractor to notify Blue Stake prior to excavation may liable him responsible for damages and subject to how much of a fine?
$5,000.00
If a contractor is in willful violation of Arizona Blue Stake , what is the maximum fine?
$5000.00
How many fire sprinkler risers are required for a single story wide open 2600 square foot building?
1
A lavatory faucet with an effective opening of 1/2 inch is positioned 3 inches from a wall. What is the required minimum air gap?
1 inch
A 3 bedroom house has more than 21 fixtures, what size of septic tank is required?
1,250 gallons
Question ID : 3867 What minimum diameter waste overflow is required for a bathtub ?
1-1 / 2 inches
What is the minimum test duration for 1-1/4 inch gas pipe with a volume of 1500 cubic feet?
1-1/2 hours
What is the maximum size of a drilled hole in a 2x6 joist, drilled 2 feet from the edge?
1-1/2 inch
What is the maximum allowable percentage of lead in solder used for potable water?
.2%
nches of water in a water column has what pressure on the bottom?
.433 PSI
Gas pressure of 14 inches of water column is____psi
.5 psi
inches of water in a water column has what pressure?
.504 PSI
The inside diameter of a pipe is 3 inches, it is 20 feet long, what is the volume of this pipe?
.98 cubic feet
What is the difference in Drainage Fixture Units of a bathtub with a over head shower or a bathtub with whirlpool attachments?
0
What is the drainage fixture units assigned to an emergency floor drain?
0
When installing a gas line a notch at the 5 foot mark needs to be made in the floor joist that is 2x 12 x 12 feet long. How deep can the notch be made?
0 inches
What maximum percent of lead content is permitted in solder used for a copper water pipe system? Please check Math Help.
0.002 (.2%)
A flush tank water closet shall be equipped with an anti-siphon back- flow preventer located a minimum of inch above the opening of the overflow pipe.
1
A 3 inch diameter pipe that is 20 feet long will contain how many cubic inches of water?
1.695.6 cubic inches
What is the minimum slope of a roof drain gutter?
1/16 inch
The minimum slope of an 8 inch horizontal drainage pipe shall be?
1/16 inch per foot
Given: A gas water heater for a swimming pool is to be installed in an equipment room. The heater has a 35,000 BTU/H input rating and is 90 feet from the meter. What pipe size is required to supply the pool heater? Note: The supply pipe is schedule 40 metallic pipe. The heating value of gas is 1,000 BTUs per cubic foot. Assume a pressure of less then 2.0 PSIG, a pressure drop of 0.5 inches water column and specific gravity of .60.
1/2 inch
Refer to the illustration; What minimum pipe size is required at "H"?
1/2 inch
What is the minimum fixture branch pipe size for a hose bibb located &l feet from the meter that has 55 psi available?
1/2 inch
If a building has a non-potable water system installed, signage shall be installed stating such. What minimum size lettering must be used on warning signs?
1/2 inch high
A tile shower floor shall slope to the drain at______inch per foot?
1/4
What is the minimum slope permitted for a 3 inch sewer pipe?
1/8
What minimum slope is required per foot of a 4 inch horizontal drain pipe?
1/8 inch
The condensate drain from a fuel burning condensing type heating unit shall be sloped no less than:
1/8 of an inch per foot
How many threads may be cut on a one inch metallic pipe?
10
No excavation for a sewage seepage pit, disposal field or septic system shall extend closer than feet to a water main or branch water line.
10
A 4 inch cleanout is located at the bottom of a vent and waste vertical stack and is then connected to the building sewer. There are no offsets. The next required cleanout shall be located within of the building drain and building sewer connection.
10 feet
A cleanout shall be located within what maximum distance of the building drain and building sewer connection?
10 feet
Copper water tubing, 2 inches and larger, must be supported eve horizontally.
10 feet
Each seepage pit shall have a minimum side wall depth, below the inlet, not including the arch of:
10 feet
What is the minimum distance in clear required from a septic tank to a building or structure?
10 feet
What is the minimum distance required between a septic tank and a nouse?
10 feet
What minimum feet of head is required to test a rough drainage and venting system?
10 feet
1-1/2 in. horizontal copper tubing shall be supported at:
10 ft. Intervals
The maximum distance between cleanouts in a 3 inch building sewer shall not exceed feet.
100
Individual seepage trenches shall have a maximum developed length of
100 feet
the maximum length of a leach line or disposal trench is feet
100 feet
According to Code, all low pressure steam and hot water heating system piping shall be hydrostatically tested at a pressure no less than?
100 pS/
Welding and brazing alloys shall have a melting point above:
1000 degrees F.
What is the number of threads on a 1-1/4 inch metallic pipe?
11
What is the maximum absorption area per linear foot of disposal trench in a septic system?
11 sq. ft.
On 1-1/2 inch pipe what is the number of threads per inch?
11-1/2
Refer to the illustration. Given: This one inch pipe offset uses 45 degree elbows and an offset distance of 8 inches at "B". What is the center to center length of the diagonal "A"?
11-5/16 inches
Reter to the Illustration, what is the c- (center to center) length of "K"?
11-5/16 inches
The minimum depth of filter material under the drain lines of a disposal field shall not be less than inches
12
What is the minimum interior finish area of a shower stall?
900 sq in
Fire sprinklers are not required in hotel clothes or linen closets and pantries when the least dimension does not exceed 3 feet and the area of the space does not exceed square feet and the walls and ceilings are surfaced with noncombustible or limited combustible material.
24 square feet
According to OSHA, a trench that reaches a depth of 4 feet shall be supplied with a ladder or a means of egress. The maximum lateral distance a person shall travel to reach this ladder shall not exceed feet.
25
Fire sprinkler heads with the brackets color coded Blue have a temperature rating of degrees.
250 - 300 Degrees F
Refer to the illustration, find the c- length of M pipe using ells of 45 degrees and rolling offset. (Drawing not to scale)
28-5/8 inches
A single trap may serve a set of what maximum number of single compartment sinks?
3
According to Code the MAXIMUM diameter of a hole that may be bored in a 2 by 10 joist is inches.
3
How many water closets can be on a 3 inch horizontal branch line?
3
One trap may serve a set of sinks which are adjacent to each other in the same room and are no further than 30 inches on center.
3
The liquid depth, from the bottom of the tank to the bottom of the outlet shall be not less than inches in a septic tank.
3 feet 6 inches (42 inches)
When a drain vent must penetrate a wall and it is less than 10 feet from an operable window it shall be at least the window.
3 feet above
Which of the following locations do not require fire sprinklers?
3 ft x 8 ft linen closet.
What maximum fixture unit load is allowed on 2 inch trap?
3 fu
A schedule 40 metallic pipe natural gas line supplies fuel for several appliances which total 1530 cubic feet/hr. What size line is required by code? Assume inlet pressure of less than 2.0 psi, maximum pressure drop of 0.5 water column, specific gravity of 0.50, and the longest length of pipe is 110 feet.
3 inch
What is the minimum size disposal pipe that is allowed in a leach trench?
3 inch
What is the minimum size building sewer for a residential home?
3 inches
The minimum size water service supply pipe shall be
3/4 inch
The water service from the meter to the building shall be what minimum diameter?
3/4 inch
is the minimum size drain pipe for a water heater pan?
3/4 inch
When the capacity of an isolated trapped section of a wet fire protection pipe is 10 gallons, what minimum size auxiliary drain valve shall be provided?
3/4 inch valve with nipple and cap
When abandoning a septic tank, the Department of Environmental Quality shall be notified within?
30 days
Question ID : 1405 The building sewer is that part of the horizontal drainage piping that begins outside the building wall .
30 inches
What is the minimum pressure required for a siphonic flushometer watercloset?
35
The last support hanger on a fire sprinkler branch of 1 inch nominal pipe size may be no more than from the end.
36 inches
The maximum width of a trench for a septic system system is?
36 inches
What is the number of square inches of the sidewall area of a seepage pit that measures 6 feet across and 14 feet deep?
37,981.44 square inches
Fire sprinkler heads with the brackets color coded Green have a maximum ceiling temperature of degrees
375
The ambient ceiling temperature of a sprinkler with green markings on each side should not exceed what temperature?
375 degrees
A church of 500 members, 250 which are men, shall have waterclosets for women.
4
According to OSHA ladders steps are required in all trenches ditches at feet or more in depth for an adequate means of exit
4
According to code, the minimum size of a cleanout plug on a 4 inch soil or sewer drain must be inches.
4
er to the illustration of the Roof Drainage system. What is the size of e needed for section "A"? (assume the fall is 1/8 " per foot and a 4 h per hour rainfall)
6 inch
size of pipe is used to feed a fire hydrant on private property?
6 inch
A vent pipe shall rise vertical to a point what minimum height above the flood level rim of the fixture served before it can be offset horizontally?
6 inches
An atmospheric-type vacuum breaker in a potable water line shall be set at least inches above the flood level rim of a fixture or device?
6 inches
Trenches that are overexcavated and require backfilling below the level of the pipe shall be backfilled in layers not exceeding:
6 inches
What is the minimum height that a drain line from a water heater pan can terminate above ground level?
6 inches
When installing a pressure relief line to the outside of a building, what is the maximum height above grade the end of the pipe can be?
6 inches
le last support hanger on a fire sprinkler branch of 1-1/2 inch nominal pe size may be no more than from the end.
60 inches
A patio roof was converted into a sun deck. A vent pipe penetrates the roof of the sun deck. What is the minimum required height of the termination point of the vent above the sun deck?
7 feet
What is the required minimum water pressure to operate a sprinkler head system?
7 psi
A gas piping systems demand is 100,000 BTU's and has a developed length of 56 feet. The specific gravity is 0.60, with a pressure drop of 0.5 inches of water column. The heating value of the gas is 1000. Using semirigid copper tubing type ACR pipe, what minimum pipe size is required to supply this system? (Note: BTU's, developed length, specific gravity, pressure drop and type of pipe can all change, know how to work and use the 35 different tables.)
7/8 inch
What is the maximum Drainage Fixture Units of a 6 inch drain line with a slope of 1/8 inch per foot?
700
What is the maximum number of fixture units a 6 inch horizontal drain with a 1/8 inch per foot can accommodate?
700
The inside diameter of a pipe is 2 inches, it is 20 feet long, what is the volume in cubic inches of this pipe?
754 cubic inches
1 3/4 inch steel fuel gas piping installed horizontally in a structure shall adequately supported at intervals not to exceed
8 feet
All 3/4' steel fuel gas piping installed horizontally in a structure shall be adequately supported at intervals not to exceed
8 feet
The maximum length of a 2 inch trap arm to its vent shall not exceed
8 feet
What minimum burial depth is required for underground gas piping going to individual outside appliances such as outside lights or a barbecue grill?
8 inches
What is the weight of a gallon of water?
8.33 pounds
What is the PSI at the bottom of a 2 inch vertical pipe 20 feet high filled with water?
8.66 PSI
A pressure reducing valve on the water distribution line shall be set at a maximum pressure of psi.
80
The sidewalls of a septic tank shall extend no less than ______inches above the liquid depth.
9
What is the maximum bend arc for steel gas piping?
90 degrees
Activation of the initiating device shall occur within_____of water flow at the alarm-initiating device.
90 seconds
Refer to the illustration, what does "A" represent?
Abandoned Facility
The inside diameter of a pipe is 2 inches, it is 14 feet long, What is the volume of this pipe?
Answer .30 cubic feet
An 8 inch sewer that has a 1/8 inch per foot slope is approved for what maximum drainage fixture unit load?
Answer 1.600
Refer to the illustration; What minimum pipe size is required at "B"?
Answer 1/2 inch
Strainer plates on drain inlets shall be designed and installed so that no opening is greater than in the least dimension.
Answer 1/2 inch
What minimum slope per foot is permitted for a 3 inch building drain?
Answer 1/8 inch
olybutylene pipe may be used in hot water piping of hydronic heating ystems water when the water in the pipe does not exceed:
Answer 180 degrees at 100 psi
Anyone who engages in any type of excavation shall notify the blue stake location center at least how many days in advance of any excavation?
Answer 2 days (48 hours)
An existing sewer pipe needs to be extended to a project. The bottom of the existing pipe is 3 feet below the bench mark. The contractor's level is set 4'-3" above the bench mark and is 100 feet away from the building project. A rod reading at the finish grade stake of the project reads 4 feet. What is the depth of the trench that needs to be excavated if the incline of the sewer line is 1/8 inch per foot?
Answer 2 feet 2-1/2 inches below finish grade stake
Vhat is the total length from "B" to *E*?
Answer 24.5 feet.
One cubic foot of water weighs approximately:
Answer 62.4 Ibs.
Which of the following colors best identifies the color used for Surveyor markings?
Answer Fluorescent Pink
Shutoff valves are required to be installed at which of the following locations for multiple hot water boiler installations?
Answer In the water supply and return for each boiler
Connection between the roof and roof drain that pass through the roof, the seal can be?
Answer Lead or copper flashing
When abandoning a septic tank, who should be notified?
Answer The Department of Environmental Quality
Fire department connections on the outside of a building shall consist of
Answer Two 2-1/2 inch connections
All the following valve locations must be full port (full way or Full ope except:
Answer Valves servicing hosebibbs
Which of the following is NOT required as part of a whirlpool bathtub installation?
Answer atmospheric vacuum breaker
A water well has been abandoned, what should be done?
Answer be filled in to protect aquifers
A boiler outlet that permits emptying or discharge of sediment from a boiler is defined as a:
Answer blowoff valve
When attaching a watercloset to a flange a_____bolts shall be used.
Answer corrosion-resistant
Heat transfer fluids may be used in closed system solar loops for domestic water heating under which of the following conditions?
Answer double walled heat exchangers are used
In reference to the testing of a roof drainage system?
Can be tested all together or in sections
in a solar piping system the valve use to prevent thermal siphonage is called?
Check valve
Refer to the illustration, what does this symbol represent?
Circulator
What markings are not required on a pipe used in boiler installations?
Class
What is the name for the interior drainage pipe that carries storm water from roof drain systems?
Conductor
Which of the following backflow prevention devices protects against back pressure?
Double check-valve assembly
Refer to the illustration, what does "C" represent?
EMS Marker or End of Service.
According to the APWA Uniform Color Code for marking utilities, Red indicates:
Electrical
According to code, when installing (any size) PVC piping horizontally, what are the requirements for support?
Every 4 feet
Blue Stake uses orange to mark which of the following?
Fiber optics, cable, telephone
Water piping supplying three single family residences on a single premises shall be equiped with a separate valve to shut off the water supply to each building.
Full open
What direction or position are most circulator shafts installed in smaller hydronic systems?
Horizontal
Refer to the illustration, what type of vent is "C"?
Individual
Hot water boilers shall have all controls set and tested by ?
Installer
Which of the following is NOT required to calculate water pipe sizes?
Maximum street pressure
In which NFPA title will you find code and regulations concerning Liquid Petroleum Gas? (LPG)
NFPA 58
Refer to the illustration, what does "B" represent?
No Access.
r to the illustration, what does "D" represent?
No EMS marker
What size vent is needed on a roof storm drain?
No vent is needed
A gate valve is used for:
On-off.
A combination plumbing fixture is permitted to be installed on one trap. What is the requirement?
One compartment is not more than 6 inches deeper than the other compartments and the waste outlets are not more than 30 inches apart.
The international color code used by utility locators to mark an underground low voltage communication line is:
Orange
Which of the following is not allowed in building interior plumbing (water Distribution)?
PVC
Which one of the following materials is not approved for use in an interior water distribution system?
PVC pipe (ASTM D1789)
What type of Valve is best suited to use to throttle water flow?
Plug Gate valve
What is not allowed in a public restroom?
Round bowl water closet
Underground utilities are assigned color codes for identification. What color identifies Sanitary Sewer Systems?
Safety Green
Voids around gas piping and sleeves passing through concrete floors on the ground shall be appropriately
Sealed
In a vertical piping system which of the following serves as a vent and drain?
Wet vent
In the regeneration process of a water softener, what happens?
The resin bead is stripped of the calcium and magnesium ions and replaced by sodium ions.
Which is required for a grease trap?
They must be vented
Connections for approved embedded piping in concrete hydronic systems shall be connected using all of the following methods exct
Threaded
A tamper valve (control valve switch) shall be operated and signal receipt shall be verified within the first turns of the hand wheel.
Two
What is used for venting only and carries no waste?
Vent Stack
What is the purpose of an expansion tank?
it allows for expanded water volume after heating
What is an approved adaptor to connect copper to PVC piping?
mechanical joint
What must be installed on the discharge pipe of a pump located in the sump pit of a basement
a check valve and a full open valve
Unprotected gas lines are prohibited in all of the following locations except?
above the ceiling
Valves installed in water piping systems that may be worked on after a protective panel has been removed are considered to be:
accessible
What is the name for the exterior drainage pipe that carries storm water from roof drain systems?
leader
Question ID : 736 What is the name for the inside bottom elevation of a sewer line or drain pipe ?
invert
e discharge line from a sewage ejector pump shall be provided with a
check valve and full open valve
A basement has a sump pit that receives drainage that cannot be discharged by gravity into the sewer. The sump pump shall be equipped with which of the following?
check valve and full open valve.
The minimum elevation that a vacuum breaker maybe installed above flood level rim of a plumbing fixture is called?
critical level
The minimum height at which a backflow preventer or vacuum breaker is installed above the flood level of a fixture is called
critical level
A tank that flushes more than one urinal:
is prohibited
What is required for materials that are used in medical gas pipin systems?
delivered to job site cleaned and capped
A cadmium cell is used in an oil burner control system to___?
detect flame
What is the name for the measurement taken along the center line of a pipe and fittings?
developed length
When connecting a copper tube to a galvanized steel pipe the connection shall be made using a copper-alloy fitting or a fitting.
dielectric
A fire sprinkler system connected to a potable water supply with a fire department connection shall be protected aganist backflow with:
double check valve or reduced pressure principle backflow prevent
Given: A low hazard boiler system does not require chemical additives, but has the potential to cause back pressure. What minimum back flow protection is required for the water make up supply?
double check valve with intermediate vent
What must be installed in a gas pipe when condensation is present in a fuel gas line?
drip pipe
The required size of the storm water drains and sewers for the roofs is usually determined on the basis of the
effective roof area
When replacing a water closet in a public restroom, what style of toilet is required?
elongated
Refer to the illustration, the pipe measurement "A" is called?
face to face
In a boiler ignition system, which flame scanner sensor does not sense light?
flame rod
What shall be placed between the earth and the radiant piping for hydronic heating?
foam insulation board
Which of the following valve type shall be installed at each building water supply line?
full open gate
The Corporation Commission has assigned color codes to identify the location of underground facilities. What color identifies gas distribution and transmission?
high visibility safety yellow
Gas piping can be installed underground beneath a building:
if installed in a conduit.