Omaha Plumbing Code Practice Test

These questions are part of the practice quiz. Start practicing

• What is the maximum number of 2 inch floor drains allowed on a 2 inch horizontal waste?
• A grease interceptor is required for establishments serving food when the fixture count exceeds how many units?
• What is the bond amount required for plumbing contractors according to community guidelines?
• On building storm drains requiring a manhole, the manhole shall be installed within _____________ feet of the building.
• How far apart must two drinking fountains be to be rated as two fixtures?
• How many inches from the side of a urinal to any wall or partition minimum?
• What is the minimum allowed slope of the bottom of a trench drain?
• What material is specified for dishwasher waste pumped below the floor?
• Which type of valve is essential for connection to a shower stall?
• What is the valve control area height for a handicapped accessible shower, measured in inches above the finished floor?
• What is the minimum capacity of a septic tank for a residence with 2 bedrooms or less?
• A by-pass line shall be installed around water meters ___________ inches and larger.
• The minimum rated flow capacity for a grease trap is ______________________.
• What is the minimum waste opening on a laundry sink?
• All commercial garage drains shall connect to a _____________ interceptor.
• Non-potable water may be used for which of the following applications?
• A shampoo sink in a beauty shop has a fixture unit rating of ______________.
• What defines a cross connection under the Omaha Plumbing Code?
• What is the recommended maximum distance between cleanouts for a 4-inch diameter pipe?
• According to the plumbing code, what is the primary purpose of requiring a bond for master plumbers?
• On a handicapped accessible wall or post mounted cantilever type water fountain, the minimum clearance for knee space from finish floor to cantilever shall be ___________ inches.
• A roof measuring 40 feet by 20 feet with a vertical wall on one side measuring 4 feet by 40 feet, _________________________ must be added to the roof area to determine minimum roof drain square feet?
• When can you use a PVC "waste and overflow" on a bathtub in an apartment building?
• The heal inlet of a "heal inlet one-quarter bend" shall be installed only in which position?
• All residential garage drains shall be _____________ drains.
• On a horizontal waste branch of how many feet or less in length may the fixture outlet be termed a cleanout?
• What is the maximum net square footage allowed to install a unisex restroom?
• What are the potential consequences for a business that fails to display the required licensing on their vehicles?
• The maximum discharge temperature for a Type IV interceptor is set at what degree?
• Which of the following is the correct waste fixture unit rating for a typical sink in a residence?
• What is the minimum waste pipe size for a Type I interceptor?
• What is the minimum allowable length of a non-handicapped accessible stall or compartment for a water closet?
• A wall hung commercial single carrier back to back shall require a chase with a minimum inside clear space of how much?
• A two-way cleanout is unnecessary if the building drain is extended to a manhole that is how many feet away or less from the building?
• A sump that receives the waste from a single floor drain does not require ______________________________________.
• How many members of the plumbing board constitute a quorum for business transactions?
• What is the maximum height of a handicapped accessible lavatory from the finished floor to the rim?
• The height of a handicapped accessible lavatory must not exceed ___________ inches.
• What is the minimum size of access opening required for a backwater valve installed less than 24 inches deep inside a building?
• Pipe and valve identification is required on above floor commercial piping systems in buildings that exceed how many floors in height?
• When a 4 by 1-1/2 inch sanitary cross is used to connect two like fixtures, which of the following is required?
• Water heater relief valve discharge lines shall not _________________________________.
• The maximum slope of a battery vented soil or waste branch is _____________ inch per foot.
• A pedestal urinal has a fixture unit rating of _______________.
• The minimum required depth of a floor sink is __________________.
• What is the maximum number of water closets allowed on a 3 inch stack in a single family dwelling?
• How many fixtures may be installed or connected to a single grease trap?
• What is the minimum thickness of a closet floor flange allowed?
• ____________ is the minimum trap seal for a shower?
• What is the minimum required clear space in front of a lavatory?
• When is a business required to allow the public access to the restrooms?
• The removable shower strainer shall have a minimum diameter of ________ inches.
• A pump and motor on a whirlpool tub shall be ___________________ from the access opening.
• What is the maximum slope allowed for a sanitary drainage pipe?
• Two-way cleanouts are not required on building storm drains if the storm drain drains to daylight how far from the building?
• When installing plastic waste piping below grade there must be a minimum __________________ clearance around the entire outer circumference of the pipe or fitting when penetrating concrete.
• When can an individual first apply to take the journeyman test?
• What is the minimum discharge pipe size from a sump or receiving tank for a sewage pump system?
• What is the maximum number of back to back clothes washers allowed on a 4 inch horizontal drain?
• Which of the following scenarios requires the installation of a backflow prevention device?
• Shower rooms having more than two shower stalls shall provide a __________ near the stalls.
• A ___________________ cannot be used to wet vent a water closet?
• At what minimum distance must a sewer line be installed from a water line?
• A handicapped accessible lavatory shall have ________ by _________ inches clear floor space minimum.
• What should a subsoil drain system connect through when linked by gravity to a storm sewer?
• When approved manholes are installed instead of cleanouts, what is the maximum distance allowed between manholes?
• Galvanized water pipe is required to be what schedule?
• What shall the relief vent in a battery venting situation be at minimum?
• Which type of backflow preventer is most commonly used in irrigation systems?
• When a scupper is used as an overflow drain it shall be ___________________________.
• In a business that sells food or drinks, what is the minimum slope to the floor drain in a public restroom?
• A drain should always have a slope to ensure proper flow. What is the minimum slope recommended?
• Trench drains used in chemical or corrosive conditions shall be made of ___________________.
• In new construction, a floor drain or floor sink must be located within how many feet of a water heater?
• A shower room with multi-shower heads shall be serviced by a minimum 3-inch drain for each how many valves or heads?
• The maximum rim height of a handicapped accessible urinal is __________ inches from the floor.
• The seal of every fixture trap in a plumbing system shall be protected by a ____________________________.
• Which of the following materials may not be used to secure a closet flange to the floor?
• Which member of the plumbing board is a non-voting member?
• What should be the focus when installing an interceptor?
• What is the maximum slope of a battery vented soil or waste branch?
• Grease interceptors cannot be made from which material?
• How high above the flood rim of a fixture must a vent be extended vertically before it can be run horizontal?
• How many inches must be allowed for minimum floor turn around space in an ADA restroom?
• Which type of urinal does not have an integral trap?
• What is a possible consequence of discharging from a subsoil drain?
• Which method is not acceptable for indirectly venting a waste?
• How many inches is the required clearance in front of a pedestal urinal?
• What is the least dimension required for a accessible lavatory?
• When is it appropriate to connect a water heater using a flexible connector?
• __________________ is the minimum trap seal on a Type I interceptor?
• What is the minimum required clearance in front of a water closet?
• On a horizontal branch, what is the maximum distance from the fixture opening that a vent can be connected?
• When installing a horizontal soil line, a clothes washer branch connection may not be connected closer than _____________ feet downstream from a water closet opening.
• What is the minimum height of a shower head above the shower floor?
• For piping larger than two inches in diameter, at least ___________ inches of horizontal service space shall be provided in front of the cleanout.
• What is the bond amount a master plumber must pay to operate a business?
• What is the minimum waste pipe size for a residential food waste grinder?
• What is the maximum number of times an applicant can take the journeyman test before they must wait to retest?
• A mop sink faucet shall be mounted a minimum of _____________ inches above the finished floor.
• The maximum spout height of a handicapped accessible drinking fountain is ___________ ?
• Slip joint compression type waste line connections shall be:
• On which side of the toilet must the flush controls of an ADA water closet be located?
• What is the maximum width for any septic system absorption trench?
• Which of the following conditions is prohibited for discharging residential subsoil drainage systems?
• Water heater relief valves shall be piped ____________________________________.
• A transition coupling may be used to ______________________________________________.
• The highest fixture connected to a waste or soil stack not requiring a re-vent is said to be _____________________.
• What is the maximum spout height allowed for a handicapped accessible drinking fountain?
• When measuring the maximum height of a testable backflow device you measure to the _________________________________.
• Which of the following describes an air break?
• What is the key purpose of the plumbing board's regulations?
• At what minimum height above finished floor should a cleanout be installed above a water closet?
• All water services 1 through 1 1/4 inches shall be type ________________ copper.
• How often must a master plumber renew their business bond?
• __________________________ is the maximum allowable length of a 2 inch horizontal waste arm from the combination wye and 1/8 bend fitting to the fixture connection before a revent is required?
• The rim or counter surface shall be no higher than ________ inches above the finished floor on a handicapped accessible lavatory.
• If a urinal protrudes from the wall more than 20 inches, what is the maximum height for the flush controls?
• The jurisdiction that this chapter shall be enforced in extends to the corporate limits plus what extra territorial zone?
• Which of the following criteria do not apply to a 4-inch running trap?
• How high above the flood rim of a fixture must a vent be extended vertically before it can be run horizontal?
• What is the minimum liquid depth for a type III interceptor?
• When installing no-hub couplings underground the no-hub coupling shall have a minimum of ________________ bands.
• What should be ensured regarding waste drains for commercial dishwashers?
• What is the maximum number of side by side clothes washers allowed on a 4 inch horizontal waste?
• How many years of experience must a master plumber or journeyman plumber have before joining the plumbing board?
• What is the minimum width of a stall of a non-handicapped water closet?
• All below grade water supplies, one inch and smaller in size, shall be type K copper ______________________________________.
• A water closet in an establishment serving liquor is rated as ______________ waste fixture units.
• What is the standard height above finished floor for a cleanout in a stack?
• Which of the following shall not be installed in a new commercial kitchen?
• The combined area of the openings through a floor drain cover must be equal to, or greater than what?
• What is the minimum height requirement for the lettering on restroom doors indicating "Men's" or "Women's"?
• The minimum height knee clearance under a sink for ADA is _______ inches above finish floor.
• Which one of the following traps are legal?
• If a type I interceptor is 18 feet from the point of connection to the building drain, ___________ is the minimum size vent required?
• What is the minimum size measurement inside of a shower stall?
• When a lead flashing for a vent stack is used the minimum weight per square foot of the lead is ______________ pounds?
• Which of the following is not used as an anti-scald device?
• Hot water shall be connected to which side of the fixture?
• What material should trench drains used in corrosive environments be made of?
• A rolled and grooved copper potable water piping system may be installed ___________________________.
• What is the minimum letter height required for the name on both sides of a vehicle used by a business or company?
• The minimum required slope for a horizontal vent line is _______________.
• A backwater valve installed in a manhole more than 2 feet deep requires the diameter of the manhole to be at least _____________ inches?
• Which of the following cannot be used for backflow protection in a high hazard?
• The discharge temperature for a Type IV interceptor should be limited to what maximum value?
• When extending a branch soil line to the first floor for a water closet and lavatory, what is the maximum vertical rise allowed?
• What is the minimum height for the flow of water on an ADA drinking fountain?
• Supplies to ice machines and coffee, tea or chocolate dispensers shall be provided with what type of connection from a minimum 1/2 inch rigid water pipe?
• At what temperature must hot water heaters be set to prevent growth of Legionella bacteria?
• When is it permissible to connect a storm drain to a sanitary sewer?
• All laundry boxes installed in fire partitions shall be what?
• What feature is required in the installation of cleanouts regardless of the pipe size?
• A water meter shall be installed in the __________________________ position.
• If an applicant fails their journeyman test, when can they retest?
• What is the minimum width of the clear space for a handicapped accessible water fountain or cooler?
• What is the range for the distance of an ADA water closet from the wall or partition?
• What is the minimum height of the lettering on restroom doors indicating men's and women's?
• What is the maximum vertical distance from the fixture outlet to the trap weir?
• What must be clearly visible on the vehicles of plumbing businesses?
• What must be the configuration of a stack vent when extended above the first floor to receive plumbing fixture discharges?
• The minimum size waste line for a floor sink is __________________.
• What is the primary function of a vent in a plumbing system?
• Who is responsible for the construction specifications for inspection manholes installed for grease interceptors?
• In a plumbing business, how must the vehicles display the license holder's name?
• ___________________ is the minimum size plastic soil or waste pipe that may be installed underground?
• What is the minimum required depth for a mop sink?
• When passing through a wood stud, PVC plastic pipe shall be protected from puncture by a minimum __________ inch thick steel plate.
• How many fixtures can be discharged onto a stack above a stack vented water closet?
• A 3 inch p-trap shall have a maximum depth of ____________ inches for the trap seal.
• The relief vent in a multi-story building shall be what size?
• What is the function of a dual check valve in plumbing systems?
• A water closet in an establishment serving liquor is rated as how many waste units?
• How often must all grease interceptors be pumped according to the code?
• What is the purpose of a relief vent in plumbing systems?
• A pan shall be provided for all floor drains when it is installed ________________.
• What is the maximum allowable spacing between cleanouts in a drainage system?
• _____________ is the minimum depth of a trap seal in inches?
• If a vent stack terminates 4 feet from a ventilation grill, what must be done?
• The fixture load of a 4 inch branch interval is based on _______________ per inch per foot fall.
• For which type of plumbing connections is a double check valve typically used?
• What is the minimum waste pipe size for a floor sink?
• A pressure vacuum breaker must be installed a minimum of how many inches above the highest point of usage?
• After an applicant has taken their journeyman test for the fourth and fifth time, how many days must they wait to retest?
• Which of these fixtures requires an overflow?
• What is the minimum size service opening for a whirlpool tub?
• What is the minimum capacity of a grease interceptor according to the code?
• Where quick closing valves are used on water lines what must also be installed to protect them?
• Where roof drains are required, overflow drains must be ___________________________.
• A sump pump located in an elevator pit shall discharge?
• When making a lead and oakum joint on bell and spigot pipe, the minimum depth of the lead in the joint shall be ____________.
• The distance between cleanouts on horizontal waste lines larger than 2 inches shall not exceed _____________.
• What is the maximum number of two-inch floor drains allowed on two-inch horizontal waste?
• The outlet pipe in a grease interceptor must originate within how many inches of the tank bottom?
• What authority does the plumbing board have regarding rules and regulations?
• What must the combined area of the openings through a floor drain cover be equal to or greater than?
• Which of the following statements is true regarding the discharge of water heater relief valves?
• Which of the following materials is typically used for water service lines?
• What is the maximum number of water closets with a fixture rating of 3 that would be allowed on a 4-inch building drain laid at a slope of 1/4 inch per foot?
• ____________________ is the minimum clear floor space required in front of a handicapped accessible lavatory?
• What is the minimum space allowed between the edge of a lavatory and a wall?
• When installing plastic pipe underground, the maximum distance between supports that secure the pipe to the bottom of the trench shall be __________ feet.
• Sanitary sewer lines shall be labeled with what type of labels and letters?
• Combination wye and eighth bends can be used in which configurations?
• Non-potable water lines shall be labeled with ___________ labels and ______________ letters.
• _________________________ is the minimum size for a residential garage drain?
• When may a grease trap be installed?
• For a building with (4) six inch roof drains connected to an 8 inch main, what size vent is required?
• Which of the following fixtures' final waste connection cannot be connected by the use of a compression gasket?
• Which type of material is not acceptable for use in underground waste and vent systems?
• All new commercial kitchen grease interceptors must be connected to which?
• What is the minimum depth requirement for a floor sink?
• The distance from the finished floor to the center of a handicapped accessible urinal must be a maximum of __________ inches.
• What is the maximum allowable length for flexible water supplies for plumbing fixtures unless special circumstances occur?
• What is the minimum distance between two water closets, center to center?
• What is the minimum capacity of a septic tank for a dwelling with over five bedrooms?
• What is the minimum clearance required for a flushometer from the bottom of the grab bar in an ADA stall?
• Enzymatic grease interceptors are categorized as what?
• Which of the following areas can the plumbing board set regulations for?
• What is the minimum allowed thickness of the concrete installed to encase a trench drain?
• Cleanouts must be installed on building sewers at intervals not to exceed how many feet?
• What is the maximum amount of fixtures allowed on a single battery vent?
• Why is maintaining venting in a sewage pump system important?
• All spills occurring during pumping or maintenance of grease interceptors must be reported within how many hours?
• What is the minimum required depth of a mop sink?
• What is the maximum height for shower controls in an ADA shower?
• What is the maximum number of clothes washers allowed on a three inch stack?
• A 2 inch horizontal copper pipe shall be supported at _________ foot intervals.
• A two-way cleanout is not required for a dwelling if the developed length between the first cleanout and the city main is _____________ feet or less.
• ______________________ is the minimum discharge pipe size from a sump or receiving tank for a sewage pump system?
• In a plumbing system, when is indirect drainage required?
• Who appoints the members of the plumbing board?
• Slip joint compression type waste line connections shall ______________________.
• What is the minimum diameter for the inspection pipe over both the inlet and outlet of a septic tank?
• How should the waste from a single rack commercial type dishwasher be piped?
• What is the required connection type for water heater relief valves?
• In plumbing installations, what is the purpose of an isolation valve?
• Which is not a requirement for a flushometer?
• The vent from a pneumatic ejector system shall be _____________________.
• What is the minimum clear floor space required in front of a handicapped accessible water closet?
• Which backflow protection method cannot be used in a high hazard scenario?
• What is required for the installation of a dishwasher in terms of its waste piping?
• The elevation difference between the invert of the inlet pipe and the invert of the outlet pipe of a septic tank should be how many inches?
• All Durham soil and waste systems are required to be of which drainage type?
• Which of the following is not used as a scald prevention device?
• Under what conditions can a drinking fountain be installed with an indirect waste?
• What is the minimum inside diameter for a manhole used for a cleanout with more than one inlet?
• A manhole is required when installing a rainwater leader on ____________ inch or larger pipe.
• The maximum height of the flush valve handle shall not exceed ________ inches for a handicapped accessible water closet.
• What is the minimum required clearance in front of a floor urinal?
• A service sink with a three inch trap standard would have a fixture unit rating of ________________________.
• What is the minimum allowed distance from the finished floor to the center of the tee serving a clothes washer?
• A partition is required between which of the following?
• At what height is a RPZ typically mounted for optimal performance?
• What is the minimum depth required for knee clearance?
• What is the common method for sealing piped connections in plumbing?
• All commercial garage drains shall be a minimum size of _______ inches.
• What is the minimum clearance required above the finished floor for a handicapped water closet?
• Which of the following guidelines pertains to the installation of a drinking fountain?
• What is the minimum allowed thickness of the concrete installed to encase a trench drain?
• In plumbing, at what distance should venting for a drain generally occur?
• What is the minimum size floor drain allowed in a veterinary clinic?
• Chemical and soap dispensing equipment shall be connected to an independent ____________________________.
• The distance between cleanouts on a 2-inch horizontal waste line shall not exceed _________ feet.
• If a change of direction in a horizontal plane of a building sewer is made with two 45 bends, a cleanout is not necessary if the bends are how many feet apart or more?
• A relief vent is required when there are ___________________ or more branch intervals?
• What is the minimum distance from the narrow side of the water closet to the side of the urinal in a restroom for single use?
• The minimum size concrete pad for a two-way cleanout on a building sewer shall be ______________________>.
• For what type of systems can the plumbing board adopt regulations?
• Which of the following is crucial for the installation of a sewage pump system?
• A vent stack or vent opening shall be located within how many feet developed length from a future fixture opening in a commercial building?
• What is the maximum height from the rim of a wall mounted urinal to the floor?
• When a subsoil drain system is connected by gravity to a storm sewer, it shall connect through a?
• The outlet pipe in a grease interceptor shall originate within ____________ of the tank bottom.
• What does the term 'grade' refer to in plumbing?
• When a grease interceptor is abandoned, which of the following is not required?
• The seal of every fixture trap in a plumbing system shall be protected by a __________________________.
• What rating does a toilet usually have in commercial settings?
• How many days is a person given to correct a violation if convicted of prohibited plumbing work?
• The use of dielectric unions is prohibited on which of the following?
• When making a lead and oakum joint on a bell and spigot pipe, the minimum depth of the lead in the joint shall be ___________________.
• A 3" vertical stack without a water pipe shall be in what type of wall?
• The minimum clear floor space for a handicapped accessible wall or post water fountain or cooler shall be _________ by __________ inches.
• Which interceptor should all commercial garage drains connect to?
• If two lavatories are installed back to back in an 8 1/2 inch wall _________________.
• What is one of the owner's responsibilities for grease interceptors?
• When using lead as a flashing on a roof drain, the flashing shall extend at least ____________________ inches beyond the outer circumference of the stone guard clamping ring.
• When is it allowed to connect a water heater using flexible connections?
• What is the maximum height of a flush valve handle for a handicapped accessible water closet from the finished floor?
• A shampoo sink in a beauty shop has a fixture unit rating of ___________.
• A shower waste shall run independent of other fixtures directly to a _______ inch or larger waste.
• What is the minimum diameter required for a shower waste pipe?
• Sway bracing and blocking must be installed on all horizontal sanitary and storm drainage piping of which size or larger?
• The inlet pipe of a grease interceptor shall extend to how many inches below the liquid level?
• A potable well will not be allowed to be cross-connected with the water supply from MUD under which condition?
• What is the minimum waste pipe size for a shower?
• Clothes washers in a group of three or more have an individual fixture unit rating of __________________________________.
• What action is required if an applicant fails the journeyman test after their fourth attempt?
• Type K or L soft copper is permissible when placed __________________ in a partition on remodel only.
• How many members make up the plumbing board?
• What is the minimum required distance from the center of a water closet to the center of a urinal?
• Cleanouts in waste pipes two inches and smaller shall have at least ____________ inches of horizontal space in front of the cleanout?
• ______________________ is the minimum trap size for a bidet?
• The knee clearance required for a handicapped accessible drinking fountain is a minimum of __________ inches from the floor to the cantilever.
• What is the maximum number of side-by-side clothes washers on a 4-inch horizontal waste line?
• Street fittings may be used on which material?
• What is the minimum diameter of openings for accessing the chambers of a grease interceptor?
• When is it permissible to install a circulation pump for a whirlpool tub below the fixture trap?
• If a 2 inch area drain is connected to a properly vented sanitary building drain, what is the maximum distance allowed between the building drain and the trap before a vent is required?
• A commercial disposal with a three inch trap has a fixture unit rating of __________?
• What is the minimum clear floor space in front of a shower opening?
• How many 4 inch vent stacks would be required for a 6 inch building drain?
• Clear floor space dimensions on a handicapped accessible urinal shall be ________ by ________ inches.
• In a vent situation, how should a heal inlet of a one quarter bend be installed?
• Installation of a pressure vacuum breaker inside a building ____________.
• Where can a pressure vacuum breaker be installed within a building?
• On new construction a drain is required to be located no more than _______ feet from a RPZ assembly.
• When installing 3 inch floor drains in a building level below grade, one drain must be installed for each how many square feet or fraction thereof?
• How is the term "plumbing" defined according to the code's guidelines?
• All wells shall be protected by an RPZ except when used for __________________.
• How many years of apprenticeship are required before an individual can test for their journeyman test?
• On a 4 inch mop sink waste that is extended 38 feet from its connection on a horizontal main, what is the minimum size vent required?
• What is required for all plumbing board members in compliance with Nebraska State Statute?
• A no-hub reducing coupling may be used in the _______________ position?
• What is the purpose of a fixture unit rating?
• What is the required bond amount that all members of the plumbing board shall provide?
• The minimum space above the test ports of a backflow assembly is _________________.
• Which factor is NOT considered when determining the bond amount for a plumbing business?
• How is the waste system for a grease interceptor vented?
• Trenches running parallel to a footing shall not extend below what angle to the bearing plane of the footing?
• For which of the following is a bond NOT typically required in the plumbing field?
• All tubing used for tail pieces in commercial installations shall be _____________ gauge brass.
• Cross-linked polyethylene (PEX) pipe may be used in sizes __________________.
• When passing through a wood stud, PVC plastic pipe shall be protected from puncture by a minimum _______ inch thick steel plate.
• Which plumbing fixture necessitates having an independent isolation valve?
• ____________________ is the minimum vent pipe size from a sump or receiving tank for a sewage pump system?
• What is the minimum combined area, in square feet, of a mop sink?
• A two inch threaded plastic fitting ______________________________.
• For building storm drains that require a manhole, the manhole must be how far or less from the building?
• To install maintain and repair testable backflow assemblies as a journeyman you are required to be certified through classes approved by ______________________.
• A vertical rainwater leader installed inside the building is not required to have a cleanout if _______________________.
• In the Omaha Plumbing Code, "interconnection" is interchangeable with what other term?
• When is it acceptable to install grease traps?
• A shower room having 8 multiple-shower valves shall be serviced by a minimum _________ inch drain.
• The waste from a garbage can washer shall drain into a _________________________.
• When a backwater valve is installed in a subsoil drain system, it is required to be in a minimum diameter manhole of how many inches?
• An owner’s responsibility for grease interceptors includes what?
• A handicapped accessible urinal shall have its flush controls mounted no more than _____________ inches above the finish floor.
• _______________ is the minimum clear floor space for a handicapped accessible wall or post water fountain or cooler.
• What is the correct terminology for a plumbing fixture intended to connect to a drainage system?
• An indirect waste must discharge into another fixture at what specific point?
• Which backflow preventer is not suitable for continuous pressure situations?
• What is the maximum number of water closets with a fixture rating of 4 fu allowed on a 4 inch building drain with a 1/4 inch slope?
• What is the minimum required waste pipe size for a trench drain that is 8 feet long?
• _______________________ is the correct mounting height for a RPZ?
• What is the minimum slope for a 10" horizontal waste line?
• A residential dishwasher not connected to a kitchen sink has a fixture unit rating of _______________.
• What is the fixture unit rating for a typical utility sink?
• A handicapped accessible water closet shall be ___________ inches from the wall to the center of the water closet.
• In which location should drinking fountains or water coolers not be installed?
• When a bypass is installed around a RPZ _______________________ is required?
• A transition coupling may be used to _________________________________________________.
• The term used in the Omaha Plumbing Code to describe the fall of the invert of a sewer is known as what?
• Stud guards for piping passing within one and one half inch of the edge of the stud should be made from which material?
• What is the minimum vent pipe size from a sump or receiving tank for a sewage pump system?
• If a stack penetrates the roof 7 feet from a firewall, what must be done?
• What is prohibited when installing water heater relief valve discharge lines?
• The maximum allowed distance from the finished floor to the center of the tee serving a clothes washer is ______________.
• Handicapped accessible water closets height is measured from the finished floor to the top of the __________________.
• What is the minimum vent size for two water closets installed back to back?
• How much clear space is required above a water closet?
• Regardless of pipe size, cleanouts shall be installed in such a manner as to provide at least ____________ inches of vertical service space?
• Vertical cross-linked Polyethylene pipe shall be supported separately at intervals not to exceed _______________.
• Cleanouts for pipes larger than 2 inches require how much horizontal space?
• A water closet in a retail establishment has a fixture unit rating of ________________.
• What is the required distance for a pressure vacuum breaker to be installed above any connected fixtures?
• The purpose of an interceptor is to remove which of the following?
• Wash fountains have a fixture unit rating of ____________________________.
• What is the minimum distance above the flood level of a fixture for an approved air gap?
• Flow control devices for grease traps shall be installed on the ______________.
• What material should trench drains used in chemical or corrosive conditions be manufactured from?