Plumbing - Session 7 Part 2

The fixture unit value for a dental cuspidor is the same as the fixture unit value a:

A. Laundry tray

B. Dental lavatory.

C. Drinking fountain.

D. Laboratory (cup) sink.

The horizontal drainage piping from a kitchen sink shall be installed at a minimum uniform slope of:

A. 1/2" per ft.

B. 3/16 per ft.

C. 1/8" per ft.

D. 1/4" per ft.

A pressure gauge placed at the base of a 5-inch cast iron line undergoing a water test indicates a pressure of 26.9 psi the height of the water in this stack is most nearly:

A. 53'-8"

B. 62'-2"

C. 11'-6"

D. 95'-3".

The minimum allowable fall or grade (slope)of a building drain is:

A. 1/8" per ft.

B. 1/4" per ft.

C. 3/8 per ft.

D. 1/16" per ft.

Offsets either horizontal or vertical may be made with a 90* short sweeps

when the diameter of the drainage piping is most nearly:

A. 2-1/2 in

B.. 3 in

C. 4 in

D. 2 in.

A water closet drain is installed in a drop ceiling. For the purpose of rodding, clean outs on this line shall be so installed that there is a clearance of not less than:

A. 12"

B. 15"

C. 18"

D. 24".

Clea outs, when installed on an underground drain, shall be extended vertically and made access (to) is:

A. Floor

B. Grade

C. Pit

D. Wall.

The one location that the discharge from the ejector pit can not connect into is:

A. The building house drain upstream of the building house trap

B. The building house drain downstream of the building house trap

C. The building house sewer

D. Directly into the public sewer.

Which one of the following statements are most nearly correct:

A. Four inch lead bends used for connection to 4 inch floor flanges are prohibited.

B. Three inch lead bend used for connection to 3 inch floor flanges are permitted

C. Four inch by three inch floor flanges may be used for connection to three inch lead bends

D.Tree inch by four inch floor flanges may be used for connection to four inch lead bends.

Where a horizontal stack offset is located more than four branch intervals below the top of the stack, a horizontal branch shall not connect within the horizontal stack offset or within:

A. 2 ft. above the offset and 3 ft. below the offset.

B. 3 ft. above the offset and 2 ft. below the offset.

C. 2 ft. above or below such offset

D. 3 ft. above the offset and 3 ft. below the offset.

Which one of the following shall not have the vent connection downstream of the trap:

A. Sink trap

B. water closet trap

C. Building house trap

D. Drinking fountain trap.

The one that can not discharge into a receiving tank is not airtight and vented is:

A. Area drains

B. Floor drains

C. Drinking fountains

D. Machinery drips.

All abandoned building sewers shall be securely sealed at a point:

A. Inside the curb line and as close thereto as practicable.

B. Close to the public sewer.

C. Within 5 ft. of the building wall.

D. At the beginning of the building (house) sewer.

A sub-building (house) drainage system is of the atmospheric type and receives flow from sanitary fixtures that require the receiving tank to be air tight and vented. With respect to the above system, which one of the following statements is correct:

A. Vents of the sub-building (house) drainage system may be connected to the vents of the gravity drainage system provided such connection is made a minimum of 6" above the flood level rim of the lowest fixture on the gravity system.

B. Receiving tank vent shall not be connected with the sub-building (house) drainage system vents.

C. Receiving tank vent shall be based on the fixture unit value flowing into the receiver

D. Receiving tank vent must be sized to relieve the tank within 10 seconds.

A waste branch line is run at a slope of 1/4 inches per foot and is sized as 3 inch when connected to a 5 inch soil stack. If the slope of this waste branch is changed to 1/8 inches per foot instead of 1//4 inches per foot, the number of fixture units should:

A. Double

B. Increase, but not doubled

C. Decrease.

D. Same as the original design.

When a plumber is using a turnpin, he should be:

A. Removing kinks from a lead bend

B. Cleaning a lead joint for wiping

C. Straightening out a piece of lead pipe

D. Flaring the end of a lead pipe.

A water meter measures and registers water consumption in:

A. Gallons per minute

B. Cubic feet per hour

C. Quarts per second

D. Cubic feet.

The purpose of an air water hammer arrestor or air chambers in a water line is to:

A. Allow for expansion of water

B. Increase water pressure in the riser

C. Reduce water hammer in the system

D. Decrease velocity of the flow of water.

The part that is connected to a ballcock that insures a full trap seal is the:

A. Float ball

B. Upper lift rod

C. Hush tube

D. Refill tube.

Proper protection against excessive pressure within a hot water tank is provided by installing a:

A. Pressure relief valve

B. Check valve

C. Flow valve

D. Gate valve.

A one-sixteenth bend is equivalent to a fitting having an angle of:

A. 22-1/2 degrees

B. 30 degrees

C. 45 degrees

D. 60 degrees.

A 3-inch standard weight water pipe and a 3-inch heavy water pipe have the same:

A. I.D.

B. O.D.

C. Wall thickness.

D. Weight per foot.

Of the following materia.s, the one that is not used in a ductile iron water pipe joint is:

A. Mechanical

B. Push-on joints with field-lock gaskets

C. In accordance with DDS specifications

D. caulled lead with approved oakum.

The reason a cast iron hub is hit before joining the hub with spigot is to determine its:

A. Soundness.

B. Weight.

C. Wall thickness.

D. Material content.

The inside diameter of a 4 inch caulking ferrule is:

A. 3-7/8"

B. 4"

C. 4-1/8"

D. 4-1/4".

Cast brass floor flanges used for W.C. should have a minimum thickness:

A. 1/2"

B. 3/8"

C. 1/4"

D. 1/8".

The trap of water closet is located :

A. In the water closet.

B. Under the water closet.

C. In the lead bend.

D. In the soil stack,

Of the following, a reason why a plumber should install a check valve is to:

A. Relieve pressure in a storage tank.

B. Prevent a backflow of sewer gases

C. Allow the flow of water in one direction only.

D. Reduce the volume of water in an appliance.

As used by a plumber, a leader is:

A. A drainage pipe for conveying storm water from roof or gutter drains to an approved means of disposal.

B. A pipe inside the building that conveys storm water from the roof to a storm or combined building drain

C. A covered tank for storing rain water to be utilized for the purposes other than in the potable water supply

D. A building drain that conveys storm water or other drainage, but not sewage.

The bib screw in the faucet retains the:

A. Seat.

B. Handle.

C. Washer.

D. Packing nut.

When testing for leaks in gas lines. it is best to use:

A. Water in the line under pressure

B. A lighted candle.

C. An aquastat.

D. Soapy water.

Drain lines receiving the discharge from chemistry laboratory sinks should be made of:

A. Polyvinyl chloride pipe (PVC) plastic

B. Acrylonitrile butadiene styrene (ABC) plastic pipe schedule 80

C. Durion or pyrex

D. Brass or copper.

Of the following, the one that is best to use when testing for leaks in a new gas pipe installation of:

A. Analog gauge.

B. Digital gauge

C. Bourdon gage

D. A, B & C..

A plumber should know that installing a globe valve on a cold water line will cut down the:

A. Volume of water

B. Temperature of the water

C. Viscosity of the water

D. Resistance of the water.

Of the following tools, the one which is not used when working a wiped joint is:

A. Drift plug.

B. Bending rod.

C. Reamer.

D. Turn pin.

The amount of lead to be used to complete a caulked cast iron soil pipe joint should be less than:

A. 10 ounces for each inch diameter of the pipe

B. 12 ounces for each inch diameter of the pipe

C. 14 ounces for each inch diameter of the pipe

D. One full medium-sized ladle regardless of the diameter of the pipe.

A shave hook is recommended by its manufacturer for:

A. Evening the edges of lead

B. Brightening oxidized copper

C. Removing burrs from non ferrous pipe

D. Removing oxidation from lead.

The main purpose of a house trap is to:

A. Provide the house drain with a clean out.

B. Prevent gases from the public sewer from entering the house plumbing system.

C."Trap" articles of value that are lost

D. Eliminate the necessity for traps under add other fixtures.

A corporation cock or stop is a:

A. A self closing faucet.

B. Shut off valve for lavatory.

C. Frost-proof type of hydrant.

D. Shut off valve for water service.

A 45-degree offset included in house drain should contain only:

A. One 1/4 bend and one 1/6 bend.

B. One 1/4 bend and one 1/8 bend

C. Two 1/8 bends.

D. Two 1/4 bends.

A plumber prevent siphonage in a fixture trap if he/she:

A. Vents properly.

B. Installs the correct number of check valves.

C. Installs a relief valve.

D. Provides adequate pitch on the water lines.

A 28 ft. long pipe line, installed with a pitch of 1/4 inch per foot has a total of:

A. 3-1/2 inches.

B. 7 inches.

C. 10-1/2 inches.

D. 14 inches.

The length of a pipe measuring 37.875 inches, and to and, is equal to:

A. 3 ft. - 0-7/8 inches.

B. 3 ft. - 1-1/4 inches.

C. 3 ft. - 1-5/8 inches.

D. 3 ft. - 1-7/8 inches.

A waste stack may receive the discharge from:

A. No water closets.

B. Only one water closet.

C. Two water closets.

D. Three or more water closets?

Capillary action is used in the correct joining of:

A. Bell and spigot joints.

B. Screw pipe joints.

C. Copper tube solder joints.

D. Solvent cement.

The total length of four pieces of 1-1/2" galvanized steel pipe whose lengths are 7 ft, - 3-1/2 inches, 4 ft, - 2-1/4 inches. 6 ft. - 7 inches and 8 ft. - 5-1/8 inches:

A. 26 ft. - 57/8 inches.

B. 25 ft. - 6-7/8 inches.

C. 25 ft. - 4-1/4 inches.

D. 25 ft. - 3-3/8 inches.

To a plumber, the letters I.P.S. means:

A. Internal pipe size.

B. Iron pipe size.

C. Interior pressure standards.

D. International pipe standard.

Of the following, the tool that should be used on polished pipe surfaces is the:

A. Stillson wrench.

B. Strap wrench.

C. Chain tongs.

D. Crescent wrench.

In plumbing, the abbreviation XHCI is associated with:

A. Water heaters

B. Chemical waste lines

C. Air lines.

D. House drains.

A yarning iron should be used in:

A. Tinning copper fittings.

B. Making lead safes.

C. Making bell and spigot joints.

D. Drying a water-filled trench.

If a 45-degree offset is 2 inches in length of its diagonal or travel is;

A. 17 inches.

B. 18 inches.

C. 19 inches.

D. 20 inches.

"Plumbing soil" is generally used by plumbers as aid in:

A. Wiping lead joints.

B. Making up flange joints.

C. Backfilling a trench.

D. Threading steel pipes.

Of the following types of saws, the one that should be used for cutting lead pipe is the:

A. Cross-cut saw.

B. Hack saw.

C. Rip saw.

D. Dove-tail saw.

Of the following fixtures, the one that plumbers usually call the "Unit fixture" is:

A. Water closet.

B. Slop sink.

C. Lavatory.

D. Bathtub. ```

The vertical distance between the crown weir and the top of the dip of the trap is called the:

A. Jump-ver.

B. Air gap.

C. Trap seal.

D. Diameter of the trap.

Of the following, the composition of general of genera purpose "wiping solder" is:

A. 70% tin and 30% lead.

B. 60% tin and 40% lead.

C. 50% tin and 50% lead.

D. 35% tin and 65% lead.

Of the following wrenches, the one which should be used on screwed valves and fittings having hexagonal connections is the:

A. Pipe wrench.

B. Monkey wrench.

C. Chuck wrench.

D. Strap wrench.

A cast iron coupling that has one end threaded for screw pipe and the other end hubbed to receive the spigot end of a pipe is known as:

A. Sisson fitting.

B. Tucker fitting.

C. Union.

D. F & W fitting.

The size of fresh air inlet or relief vent is based on the sizes of the associated:

A. House drain.

B. Public sewer.

C. House sewer.

D. Soil stack.

The tool holds the dies when dies when the pipe is being threaded is called a:

A. Yoke.

B. Vise.

C. Stock.

D. Swedge.

A gallon of water weighs:

A. 6.25 lbs.

B. 7.5 lbs.

C. 8.33 lbs.

D. 14.7 lbs.

A solder nipple is mainly used in plumbing work to:

A. Clean clogged pipes.

B. Connect the handle of a soldering iron to the copper.

C. Make up a joint between lead pipe and brass pipe.

D. Maintain an even flow of solder.

Where ssteel hangers are used to support copper tubing, the pipe should be insulated from the hangers to prevent:

A. Water hammer.

B. Vibration.

C. cooling.

D. Electrolysis.

Copper tubing having the greatest wall thickness is known as:

A. D.W.V. type copper tubing.

B. Type M copper tubing.

C. Type L copper tubing.

D. Type K copper tubing.

Of the following methods, the best one to use in making up a pipe joint between lead pipe and copper pipe is:

A. Brazing.

B. Soldering.

C. Burning.

D. Wiping. ```

To break in or condition a new approved joint runner, the runner should be soaked in:

A. Alcohol.

B. Rosin.

C. Oil.

D. Water. ```

The weight of a 4 ft. x 4 ft. shower pan made of 6 pound sheet lead is most nearly:

A. 96 pounds.

B. 75 pounds.

C. 69 pounds.

D. 29.25 pounds. ```

The approved method of making a branch connection to an existing horizontal X.H.C.I. waste line is by using a:

A. Sisson fitting.

B. Kaeffer fitting.

C. Saddle.

D. Three-piece connection. ```

Siphon action through the fill pipe in a flush tank is prevented by installing a:

A. Stop and waste valve.

B. Vacuum breaker.

C. Flushometer.

D. Back water valve.

Sperm candle or tallow is applied to clean lead work lead work in order to prevent:

A. Pitting.

B. Oxidation.

C. Tinning.

D. Melting.

A Hydroneumatic tank in a plumbing system is mainly used to:

A. Pump storm water to the sewer.

B. Provide potable water under pressure.

C. Supply compressed air to equipment.

D. Filter water for a swimming pool.

Joints for cast iron bell and spigot soil pipe should be made with:

A. Wiped solder.

B. Packed oakum and molten lead.

C. Oakum and asphaltic compound.

D. Oakum and cement mortar.

A tee whose branch is larger than its run is correctly referred to as a:

A. Bullheaded tee.

B. Lateral tee.

C. Street tee.

D. Reducing tee.

A house drain which is buried in earth should not be made of:

A. Copper or copper alloy tubing (type K or L).

B. Ductile iron or stainless steel drainage systems, type 316L.

C. Non-asbestos fiber cement pipe or cast iron pipe.

D. Polyethylene (corrugated 8 inches and larger)f.

A compression type fitting is most likely never permitted in use with:

A. Cast iron Hub and spigot pipe and fittings.

B. Joints between different piping materials shall be made with a mechanical joint of the compression or mechanical-sealing type .

C. Joints between plastic pipe and cast-iron hub pipe shall be made by a caulked joint or a mechanical compression joint.

D. Joint between lead pipe and other piping material shall be made by a wiped joint to a caulking ferrule, soldering nipple, or bushing or shall be made with an approved compression fitting.

Safety goggles should be worn (at all times) when cutting:

A. Galvanized pipe.

B. Oakum.

C. Cast-iron.

D. Sheet lead.

A [lumber should not plunge a wet ladle into a pot of molten caulking lead because it:

A. Contaminates the lead.

B. May crack the pot.

C. May crack the ladle.

D. Makes the lead spatter.

A plumber's helper (apprentice), who is one who is:

A. Negligent.

B. Untrained.

C. Neat.

D. Methodical.

A correctly installed gasket provides a seal in a:

A. Flange union.

B. Ground joint union.

C. Roof flange.

D. Left-right coupling.

A plumber installing a battery of sink in the school cafeteria should also include in the waste line:

A. A chlorinator.

B. An anti-siphon loop,

C. A grease trap or interceptor.

D. A check valve.

If a faucet continues to drip despite the new washer a plumber has installed, he should then:

A. reface or replace the seat.

B. Replace the entire faucet.

C. Install a washer made of different material.

D. Replace the bib screw.

Of the following tools; the one used to fasten faucets to lavatories is called:

A. A pair of pump pliers.

B. A spud wrench.

C. An open end wrench.

D. A basin wrench.

A cast-iron floor flange should be used when installing a:

A. Water closet.

B. Bathtub.

C. Kitchen sink.

D. Drinking fountain.

A plumbers' rasp is a tool recommended by its manufacturer for use on:

A. Cast iron.

B. Brass.

C. Lead.

D. Black steel.

Of the following, the pipe size not common to the plumbing trade is:

A. 2 inch,

B. 2-1/2 inch,

C. 3 inch,

D. 3-1/2 inch.

Once a flushometer valve is in operation, it is made to close automatically by:

A. The return of the lever handle to the neutral position.

B. The action of a flat helical spring above the diaphragm.

C. The water pressure on the inlet side of the valve.

D. The elasticity of a stainless steel diaphragm.

An outside caulking iron is a tool recommended by its manufacturer for use on:

A. Steel pipe.

B. Cast iron.

C. Lead pipe.

D. Brass pipe.

A swimming pool is e5 feet wide by 75 feet long and has an average depth of 5 feet. The capacity when filled to the overflow is most nearly:

A. 9,375 gallons.

B. 65,625 gallons.

C. 69,005 gallons.

D. 70,312 gallons..

A means for disconnecting an electric hot water supply system from its energy supply shall be provided in accordance with:

A. N.Y.C. building department rules.

B. N.Y.C. electric code.

C. N.Y.C.electric code.

D. National electric code.

For other than electric fired hot water supply systems, all other systems shall have a separate:

A. Valve to shut off the energy fuel supply.

B. Check valve to shut off the energy fuel supply.

C. Flow check valve to shut off the energy fuel supply.

D. O S & Y valve to shut off the energy fuel supply.

All storage water heaters operating above atmospheric pressure shall be provided with an approved:

A. Self-closing (levered) pressure relief valve.

B. Temperature relief valve.

C. Combination temperature and pressure relief valve.

D. A. B & C.

All storage water heaters operating above atmospheric pressure 14.7 psi shall have relief valves conforming to ANSI Z21.22. The relief valve shall not be used:

A. As a means of controlling thermal expansion.

B. To relieve pressure above those approved.

C. To relieve temperatures above those approved.

D. B & C.

All temperature pressure relief valves or combination therefore shall be:

A. Installed in the piping serving the storage water heater tanks.

B. So installed in the shell of the water heater.

C. Located on the house side of all control valves.

D. Installed bellow the drain valve.

Temperature relief valves shall be so located in the tank as to be actuated by the water in the top:

A. 2" of the tank served.

B. 4" of the tank served.

C. 6" of the tank served.

D. 8" of the tank served.

The outlet of a pressure, pressure or other relief valve:

A. Shall be directly connected to the drainage system.

B. Shall not be directly connected to the drainage system.

C. Shall be connected on the house side or inlet side of a floor drain.

D. May connect to a wye fitting on a fixture side of its trap.

Temperature, pressure or other relief valve shall:

A. Be a minimum of 1/2 inch.

B. Discharge full size to a safe place of disposal, such as the floor.

C. Discharge outside the building or discharge to an indirect waste receptor.

D. B & C.

The discharge pipe of a relief valve for a hot water heater or storage tank shall:

A. Not have any trapped section.

B. Have an invisible air gap.

C. Have an air gap fitting located outside the room of the water heater.

D. Have the outlet end of the discharge pipe threaded.

Relief valve piping shall be piped independent of other equipment drains or relief valve discharge piping to the disposal point. Such pipe shall be installed in a manner that:

A. Can cause personal injury to occupants in the immediate area.

B. Can cause structural damage the building.

C. Does not cause personal injury to occupants in the immediate area.

D. A & B.

Relief valve discharge piping shall be of those materials listed in Section 605.5, or shall be tested, rated and approved for such use in accordance with ASME A122.4.1. The material not listed:

A. Cast-iron pipe.

B. Steel pipe.

C. Copper or copper alloy pipe.

D. Plastic pipe.

Piping from safety pan drains shall be of those materials listed in table 605.4, the material not listed:

A. Cadt-iron.

B. Plastic pipe.

C. Steel pipe.

D. A, B & C.