Plumbing Code OVERALL Flashcards
What is the result of improper plumbing?
Introduction of pathogenic organisms into potable water supply, escape of toxic gases into environment, and potentially lethal disease and epidemic
What is a building drain?
Part of the horizontal piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of a building and it conveys it to 5 feet outside the foundation walls
Who shall inspect every sprinkler system installed by an irrigation contractor?
A licensed plumber
Who shall do the planning and designing of plumbing systems and all plumbing?
Licensed plumbers and licensed apprentice plumbers
What’s the minimum age for apprentice plumbers?
16
All trucks advertising plumbing must have?
A plumbing license number
How many plumbers are on the examination board?
9
When do plumbing licenses expire?
April 30th
What can a retired plumber do?
Nothing
How long are plumbing licenses renewed for?
1 year
What’s the maximum number of applicants per exam?
50 and 40 in the winter months
What are the three parts of the exam?
Written questions, drawings and/or charts, and practical
What is the average grade to pass the exam?
75 or above
How do you qualify to be an applicant for a plumbers license?
Successfully pass the plumbing exam and pay the license fee
What’s the minimum age for a retired plumber?
62
How many hours of continuing education is required?
4 hours
How much is the cost of the exam for Illinois apprentice plumbers?
$175
What’s the cost for a plumbing license renewal?
$150
The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank or plumbing fixture and the flood-level rim of the receptacle
Air Gap or Open Site
What is the purpose of a backflow preventer?
To prevent the contamination of the potable water supply through an actual or potential cross connection
T or F: There shall be no physical connection between the potable water system and any non-potable water source
True
What is the minimum allowable distance buried pipe must be laid parallel to the inside or outside footings?
18 inches
T or F: Groundwater, roof drainage, discharge from footing tile drains or other storm water wastes shall be discharged into the sanitary drainage system
False
Pipes passing under or through walls or floors shall be protected from ____ caused by stress or strain
Breakage or Failure
All plumbing fixtures, drains, appurtenances, and appliances used to relieve or discharge sanitary waste shall be connected to the ______ _______
Drainage system
A concussion or sound of concussion of moving water against the sides of a pipe or vessel due to a sudden stoppage of flow
Water Hammer
What is the purpose of a trap?
To prevent back passage of air without affection to the flow of sewage or waste water
A device or system of piping to maintain a water seal in a trap is called a _____
Trap Primer
An appurtenance installed beneath piping and/or fixture to collect and drain any leakage
Safe Pan
Water that is safe for human consumption is called what?
Potable water
A pipe that does not connect directly with the drainage system but discharges into the drainage system by means of an air gap is the definition for what?
Indirect waste
Gray water is waste water not containing _____ or ______
Fecal matter or Urine
Building drain terminates ______ feet outside the foundation wall
5 feet
After 5 feet, the piping, which extends from the building drain, is the _________
Building sewer
The reversal of flow from that is normally intended
Back Flow
A vent connecting at the junction of 2 fixture drains and serving as a vent for both fixtures is a __________ vent
Common Vent
T or F: Used pipe can be installed in a potable water system
False
What material can safe pans be made of?
Lead, copper, aluminum, galvanized steel, abs, pvc, or fiberglass material
Lead sheets for safe pans shall weigh _____ pounds per square foot
4 lbs/Sq. Ft.
Copper sheets for safe pans shall weigh at least ______ ounces per square foot
12 oz./sq.ft.
All plumbing material must be labeled by an agency that is approved by the ________ or is a ________ accredited certification program
Department, ANSI
ABS and PVC safe pans and liners shall be ______ welded together with proper cement
Solvent
Aluminum, galvanized steel, and stainless steel safe pans shall be at least ______ gauge material
24 gauge
What is marked or cast stamped on every plumbing material?
Manufacturers Identification of materials
ABS or PVC safe pans or liners shall be _______ or ______
30 or 40 mil
T or F: Fiberglass for safe pans or liners shall be as durable as PVC or ABS
True
T or F: All material, piping, fitting, appliances, appurtenances, faucets, fixture fitting, fixtures, and devices don’t have to be approved by the department.
False
In a water supply system a union should be installed within ____ feet of equipment
5 feet
When can you decrease pipe on a drainage system?
Water Closet
What must be used when copper and galvanized pipe are joined?
Brass converter fitting or dielectric type Union
Can PVC be connected into the hub of cast iron pipe with a service weight gasket on a DWV system?
Yes
Rolled grooved mechanical joints may only be used on what type of copper?
K or L
When can you use Cement mortar joints?
Repairs
How much lead should be poured in a caulk joint?
1”
What will happen in a caulked joint if the spigot end doesn’t rest against the bottom of the hub?
Oakum may enter the pipe and cause a stoppage
Can you use lead Solder on a DWV system?
No
How should no hub soil pipe joints be connected?
Elastomeric gasket with a stainless steel band or clamps
A kitchen sink with up to 3 basins may be installed on one trap if one compartment is not more than 6 inches deeper than the other and the waste outlets are not more than _____ inches apart
30 inches
The standpipe inlet for an automatic clothes washer shall not exceed ______
48 inches above the weir of the trap
24 inches minimum above the weir of the trap
Where loss of a trap seal may occur due to evaporation, which one of the following shall not be used?
Vacuum breaker
The standpipe inlet for an automatic clothes washer shall not exceed _____.
48in above the weir of the trap.
The standpipe inlet for an automatic clothes washer shall not exceed _____.
48in above the weir of the trap.
Where loss of a trap seal may occur due to evaporation, what shall not be used?
Vacuum breaker
Where loss of a trap seal may occur due to evaporation, what shall not be used?
Vacuum breaker
T or F: No trap shall be installed at the base of a soil or waste stack or in a building drain.
True
A clean out shall be provided at, or no more than ____ ft. Above the base of each vertical waste or soil stack.
4 ft
T or F: Every clean out shall be installed so that the clean out opens in the same direction as the flow of the drainage.
False
Clean outs shall be of the same size as the pipe they serve up to a maximum of ____ in., and at least _____ in., for larger pipe.
6in, 6in
Clean outs shall be no more than ____ ft. apart including the developed length of a clean out pipe, in a horizontal drainage line of 4in. or less
50 ft.
T or F: A test tee at the base of a stack may not be used as a clean out.
False
All clean outs in vertical stacks shall be no higher than _____ in. above the floor.
48 in.
A grease interceptor located on a floor below the fixture shall have ____ % of the liquid holding capacity of the fixture.
60%
In commercial vehicle repair garages and gasoline stations in which floor drains are installed, a minimum of one floor drain per working stall or one floor drain for each _____ sq. ft. shall be installed.
500 sq. ft.
T or F: Poured concrete interceptors are prohibited.
True
Where two or more sinks or receptacles are connected to an interceptor, the liquid holding capacity shall be based on the _____ ______ of the fixtures served.
Combined volume
What cannot be stored in an airport hangar?
Compressed air
T or F: The hanger shall not be provided with floor drain or trench drains if no interceptor is present.
True
The minimum size interceptor shall be ____ cu. ft. For the first 500 sq. ft. of floor area.
6 cu. ft.
In all motor vehicle wash racks, drainage shall discharge into a watertight catch basin at least 36 in. in diameter or _____ ft. by ______ ft. in rectangular shape.
3 ft. by 2 1/2 ft.
T or F: Commercial laundries shall be equipped with an interceptor having a removable wire basket or similar device that will prevent materials detrimental to the sewage system from passing into the system.
True
The bottom of the vacuum breaker, or the critical level line shown on a vacuum breaker, shall be at least ____ in. above the overflow rim of the bowl.
4 in.
No more than ____ water closet(s) shall be served by a single flushometer valve.
1
T or F: Trough urinals are acceptable under Illinois Plumbing Code section 890.1140
False
Unisex restrooms shall have no more than ____ water closet(s).
1
The minimum size drain on a washer box is ____.
2 in.
Each compartment of a laundry tray shall be provided with an opening at least _____ in. in diameter and with a stopper or strainer.
1 1/2 in.
The automatic safety water mixing device shall be adjusted to a maximum setting of ____ °F at the time of installation.
115°F
Minimum Waste Outlet:
Bathtub ______
Lavatories ______
Showers ______
Bathtub - 1 1/2 in.
Lavatories - 1 1/4 in.
Showers - 2 in.
The activating handle on a flush valve shall be at least ___ in. above the overflow rim of the bowl and not exceed ____ in. above the floor.
10 in. & 44 in.
T or F: A hot water heater thermostat is an acceptable alternative water temperature control device.
False
Lead pipe supports shall be made of what material?
Lead or Softer material
Lead pipe shall be supported every ____ feet when it is in a vertical run.
4 feet
Cast iron pipe shall be supported within ______ inches of each hub or joint.
18 inches
Cast iron exceeding 5 feet in length shall be supported at least in _____ foot intervals.
10 foot
Threaded pipe 1 1/2 and larger shall be supported at least in _____ foot intervals.
12 foot intervals
Threaded pipe smaller than 1 1/2 shall be supported at least in _____ foot intervals.
8 foot intervals
Copper tubing larger than 1 inch shall be supported every ____ feet.
10 feet
Copper tubing 1 inch and smaller shall be supported every ____ feet.
8 feet
All horizontal plastic piping shall be supported no more than _____ feet.
4 feet
T or F: Lead pipe shall be supported every 3 feet using steel pipe hangers.
False
What is the maximum developed length of any indirect waste line?
5 feet
What is the minimum size for an indirect waste line?
3/4 inch or same as fixture outlet
Swimming pools have what kind of waste?
Indirect waste
List 3 things that use indirect waste?
Commercial dishwashers
Dishwashing sinks
Pot washing sinks
What is the minimum size air gap?
1 inch minimum or 2 times the fixture drain
T or F: Receptors serving indirect waste pipes shall be trapped and vented and shall not be installed in any concealed, inaccessible, or unventilated space?
True
T or F: You can dump corrosive liquids, spent acid, or other harmful chemicals into the building sewer as long as they are neutralized first.
True
T or F: Indirect waste never needs to be cleaned.
False
T or F: You can indirectly waste clear water into the building storm drain, building, or building sewer, located on the same floor.
True
T or F: All indirect waste shall discharge into a vented trap as close to the fixture as possible and in the same room.
True
Non-potable water lines are identified by what color paint?
Purple
T or F: You can connect potable water to a non-potable water using a backflow.
False
What three things need to be considered when installing a backflow preventer?
Accessibility
Maintenance
Replacement
The maximum height above the floor for a RPZ?
5 feet
What provisions must be made in order for a water service pipe to be installed outside of a building?
Freeze protection
What is the minimum depth for any water service pipe to be installed outside of a building?
36 inches or local frost line, whichever is greater
What is the minimum water service pressure on the discharge side of the water meter?
20 psi
What is the minimum rating for plastic water pipe?
160 psi at 73.4°F
What is the minimum constant water pressure at a fixture?
8 psi or the minimum recommended by fixture manufacturer
If water pressure to a fixture exceeds 80 psi, what three things does it need to reduce pressure to 80 psi or less?
Pressure Reducing Valve
Pressure Gauge
Strainer w/ a bypass relief valve
How long can a dead end in a drainage system be extended before it must be vented?
10 feet horizontally, 2 feet above floor level
Floor drains in food establishments located in coolers, freezers, refrigerated holding areas, dressing rooms, or processing rooms shall have what minimum inside diameter?
4 inches
T or F: Private rooms having a masonry or concrete floor require a floor drain.
False
How shall elevator pumps discharge?
Indirectly into the sanitary sewer or storm drain
How close to an offset of 45° or less in a vertical soil or waste stack can you connect a branch line before you have to install a relief valve?
2 feet above or below the offset
Drainage pipe of 3 inches or less shall be installed with what grade?
1/4 inch per foot
Branch wastes and fittings for a circuit vented fixtures shall be installed where on the branch drain?
Side
Sumps receiving the discharge from more than 6 water closets or 60 D.F.U’s shall be provided with what?
Duplex pumping equipment
Drainage pipe larger than 3 inches but less than 8 inches shall be installed with what grade?
1/8 inch per foot
Where conditions do not permit building drains to have a required grade, a lesser grade may be used if the velocity is met _____ foot per second.
2 foot per second
Long mains shall have relief vents at what intervals?
Every 100 feet
Soil and waste stacks in buildings having more than 10 branch intervals shall be provided with a relief vent where?
At each 10th interval starting with the top floor or midway between the first and twentieth interval
How many pipe diameters must there be between the trap vent and the trap weir?
At least 2 pipe diameters
How many D.F.U’s are allowed for a 2 in. wet vent?
4 D.F.U’s
How far below the roof shall an increaser for a vent terminal commence?
1 foot
What is the purpose of venting?
To permit the admission or emission of air so that under normal and intended use of the seal of fixture shall never be subjected to a pneumatic pressure differential of more than 1 inch water column.
T or F: The vent pipe opening from a soil or waste pipe shall not be below the trap weir?
True
How many inches above the flood level rim of the highest fixture shall a vent pipe be connected to another vent?
6 inches
What is the smallest vent terminal size through the roof allowed?
3 inches
A relief vent shall be what size?
1/2 diameter of soil or waste branch to which it connects
What type of flush valve is to be used in a correctional facility?
Push button
Stainless steel water closets in a correctional facility shall be made of no less _____ gauge steel
14 gauge
Four types of tests that can be used on a sanitary system?
1) water test
2) air test
3) smoke test
4) peppermint test
Minimum pressure required for an air test on a sanitary system?
5 p.s.i
What is the minimum amount of head pressure on a water test?
10 ft. of head
How long must a system hold head pressure on a water test?
15 minutes
The water supply system shall be tested to what pressure?
At least 1 1/2 times the system pressure buy at least 100 p.s.i
Who is responsible to arrange for an inspection with the department or local inspector?
The licensed plumber or the plumbing contractor on the job
How is a building sewer to be tested?
Inserting a test plug at the point of connection with the public sewer. Building sewer shall be filled with water under a head of at least 10 ft. The head shall not drop for 15 minutes
Maximum distance allowed from fixture trap to vent?
1 1/4” - 2’-6”
1 1/2” - 3’-6”
2” - 4’
3” - 5’
4” + - 6’
How many water closets are needed for a dorm with 110 male residents?
5
What does ASTM stand for?
American Society for Testing Materials
How many lavatories are needed in a female restroom at a theater that seats 500 people?
2
How are the minimum numbers of fixtures required for a certain building figured?
The total occupancy is figured, and then it is assumed 50% are female and male. The number of fixtures per person is based on those numbers
All businesses selling motor fuel must provide a public restroom except when?
When they do not have attendants working at the business
