Plumbing - Session 5 Part 1

An air break (drainage system) is generally found in a:

A. A drain from a fixture discharging indirectly into another fixture at a point below the flood level rim and above the trap seal.

B. a vertical distance through the free atmosphere between the faucet to the flood level rim.

C. A body of air between a faucet and an overflow rim.

D. The air between the vacuum breaker and check valve.

the fixture which is not allowed to discharge its waste into a grease interceptor:

A. Commercial sink.

B. Floor drain for kettles.

C. Pot sink.

D. A commercial dishwasher whose water temperatire discharge is above 180*F.

One cubic foot of water weights most nearly:

A. 62.4 lbs.

B. 8. 33 lbs.

C. 7.48 lbs.

D. 39.1.

Water boils at:

A. 212*F.

B. 32*F.

C. 100*F.

D. 0*F.

How many cubic inches are there in a gallon of water:

A. 2.31.

B. 231.

C 1728.

D. 212.

What kind of joint is permitted on a threadless copper pipe:

A. Burned.

B. Brazed.

C. Threaded.

D. Soldered.

You have to install a 2" waste pipe through a 12" beam. The hole size and location with the height of the beam, should be:

A. A 4" hole 4" from the top.

B. A 3" hole 3" frrom the top.

C. A 3" hole 6" from the top.

D. A. 5" hole 6" from the top.

A lintel is defined as a:

A. Pipe support.

B. Chair carrier.

C. 6" nipple.

D. Sleeve.

A unit vent is sometimes called a:

A. Dual vent.

B. Individual vent.

C. Relief.

D. Loop.

In a public building three urinals have been substituted fornwater closets. The number of requited water closets was most nearly:

A. 6.

B. 12.

C. 15.

D. 18.

Wall and floor spase to a point ... feet in front of a urinal lip and ... feet above the floor and at least ... feet to each side shall be waterproofed with a amooth, readily cleanable, nonabsorbent material.

A. 1,2,3.

B. 2,3,4.

C. 2,4,2.

D. 4,1,2.

A 4-inchx3-inch flange is normally installed in a:

A. Hot water return line.

B. Domestic dishwasher.

C. Instrument sterilizer pipe connection.

D. Water closet soil pipe connection.

The wall area above built-in tubs having shower heads and in shower compartments shall be constructed of smooth, noncorrosive, nonabsorbent, waterproof materials to a height not less than ... feet above the floor level, and not less than ... inches where measured from the compartment floor at the drain. Such walls shall form a water-tight joint with each other and with either the tub, eeceptor or shower floor:

A. 7-1/2, 70.

B. 7,68.

C 6,70.

D. 5, 72.

In a 3-story elevated office building, 250 men are to be employed. The minimum toilet room arrangement is:

A. 3 water closets on each floor.

B. 3 water closets and one urinal on the 1st and 2nd floors.

C. 2 water closets and one urinal on the 1st and 3rd floors.

D. 5 water closets and 2 urinals on the 2nd floor.

Name 4 requirements for water closet seats?

Two methods of water connections to a dishwasher shall be:?

Where fixtures come in contact with walls or floors, the space between the fixture and the wall shall be sealed against:

A. Odors.

B. water seepage.

C. Rats.

D. Vermin.

Floor outlet fixtures shall be secured to the floor or floor flanges by:?

In an all girls high school of 750 students the minimum number of water closets required is:

A. 14.

B. 15.

C. 22.

D. 24.

A fixture trap of four inches has a drainage fixture unit value of:

A. 2.

B. 3.

C. 4

D. 6.

A school dormitory for girls is designed to accommodate 30 girls. The minimum number of bathtube/showers that shall be installed is:

A. 2

B. 4.

C. 6.

D. 8.

Each laundry tray waste outlet shall have a minimum waste outlet in each compartment is:

A 1-1/4".

B. 1-1/2".

C. 2".

D. ".

A "chair carrier" is usually used to support:

A. Wall hung fixtures.

B. pedestal type fixture.

C. Several pipes.

D. Bathtubs.

Three inch copper bends may be used on water closet connections, provided a:?

The water supply to flush tanks equipped for manual flushing (WC) shall be controlled by most nearly:

A. Vacuum breaker.

B. float valve.

C. Ball-cock.

D. Re-fill tube.

Which one of the following statements is correct:

A. Flushing devices for water closets and urinals shall not serve more than one fixture.

B. a single flushing device may be used to flush more than one urinal when it is controlled automatically.

C. Each flushometer valve supplying a submerged inlet with an air gap shall be provided with an approved vacuum breaker.

D. Only those plumbing fixtures that depend on trap siphonage shall be provided with a vacuum breaker.

A separate trap shall be provided for a dishwashing machine that:?

The water supply to a garbage can washer shall be protected against backflow by an :

A. Flow control valves.

B. air gap or backflow preventer.

C. Temperature relief valves.

D. Hose outlets.

The flushing mechanism in a low down tank water closet is son arranged that a fill tube supplies water from the ball-cock to the overflow standpipe for a short interval immediately after the water closet is flushed. The primary reason for this is to:

A. Finish cleaning the water passages of the closet.

B. properly seal the ball in its seat.

C. Renew the seal in the closet trap.

D. Scour the flush tube from the tank to the closet.

The treated effluent from an approved black water treatment system shall be regulated by:

A. Department of buildings.

B. State department of DEP.

C. NYC, department of Environmental Protection (DEP).

D. Department of health and mental hygiene.

The required toilet facilities in occupancies other than assembly or mercantile shall be located:

A. Not more than one story above or below the employees working area.

B. Not more than two stories above or below the employees working area.

C. Not more than three stories above or below the employees working area.

D. The path of travel to such facilities shall not exceed a distance of 400 ft.

Flush tank shall be provided with overflows discharging to the:

A. Water closet or urinal.

B. house side of the water closet.

C. Service sink.

D. Floor drains.

The overflow from any fixture shall discharge into the drainage system on the:?

Water closets shall be prohibited:

A. Having a concealed trap.

B. having walls that are not thoroughly washed at each discharge.

C. Any water closet that permits siphonage of the contents back into the bowl.

D. A, B & C.

In nurseries, schools, and similar places where plumbing fixtures are provided, water closets shall be of a size and height suitable for children under:

A 4 years of age.

B. 6 years of age.

C. 5 years of age.

D. 3 years of age.

For wall hung trough urinals, the surrounding material shall be finished with a smooth, readily cleanable, non-absorbent material for the following distances:

A. Wall and floor space in front of a urinal lip?

B. above the floor?

C. Each side?

A water closet, urinal, lavatory or bidet shall not be set closer than … From its center to any side wall, partition, vanity or other obstruction, or closer than … Center-to-center between water closets, urinal or adjacent fixtures. There shall be at least … Clearance in front of the water closet, urinal or bidet to any wall, fixture or door.

Water closet compartments shall not be less than … wide or … deep. There shall be at least … clearance in front of a lavatory to any wall, fixture or door.

Where any fixture is provided with an overflow, the waste shall be designed and installed so that standing water in the fixture:

A. Cannot discharge into the overflow.

B. cannot discharge into the fixture.

C. Cannot rise to the flood level.

D. Will mot rise in the overflow when the stopper is closed, and no water will remain in the overflow when the fixture is empty.

Shower compartment shall not be less than ... In minimum dimension measured from the finished interior dimension of the compartment, exclusive of fixture valves, shower heads, soap dishes, and safety grab bars or rails; whether measured as the side of a rectangle, altitude of a triangle or as a diameter of a circle shall be at least:

A. 20 in.

B. 25 in.

C. 30 in.

D. 40 in.

The minimum required area and dimension for shower compartments shall be measured from the finished interior dimension at a height equal to the top of the threshold and a point tangent to its center line and shall be continued to a height:

A. Not less than 70 inches above the shower drain outlet.

B. not less than 68 inches above the shower drain outlets.

C. Not less than 66 inches above the shower drain outlet.

D. Not less than 60 inches above the shower drain outlet.

When connected to a 3-inch branch connection the open area of a floor drain strainer shall most nearly:

A. 10.6 sq. in.

B. 8.9 sq. in.

C. 7.1 sq. in.

D. 5.3 sq. in

Health care fixtures designed for therapy, special cleansing or disposal of waste materials, combinations of such purposes, or any other special purpose, shall be of smooth, impervious, corrosion-resistant materials and, where subject to temperatures in excess of ... shall be capable of withstanding, without damage, higher temperatures.

A. 180*F.

B. 160. *F.

C. 150*F.

D. 140*F.

When facilities for physically handicapped persons are provided the minimum height above the floor that the toilet seat shall be installed is:

A. 15-16 in.

B. 16-19 in.

C. 17-19 in.

D. 19-24 in.

Which one of the following is most nearly correct:

A. When exposed to frost, long hopper shall be used.

B. offset wash-out water closets are permitted only with the commissioners' permission.

C. The minimum flush tank lining shall be #22 US gauge.

D. It is unlawful for overflows of flush tanks to connect directly with any part of the drainage system.

The minimum rate of filling a fire reserve tank is 63 gallons per minute and the minimum capacity of the fire reserve tank is 3500 gallons. The time required to fill an empty standpipe reserve tank is most nearly:

A. 35 min.

B. 77 min.

C. 46 min.

D. 53 min.

When facilities for the physically handicapped persons are provided the minimum width of the water closet stall shall be most nearly:

A. 24 in.

B. 28 in.

C. 32 in.

D. 36 in.

Water closet stalls for the physically handicapped shall be:

A. Width?

B. depth?

C. Door?

D. Water closet seat?

The stall shall be provided with grab bars on each side:

E diameter(OD)?

F. Above the floor?

G. Clearance from the wall?

A drinking fountain, not recessed shall be set:

H. Above the floor?

The minimum dimensions of a rectangular shaped shower compartment that complies with the plumbing code:

A. 36 in. x 25 in.

B. 30 in. x 32 in.

C. 28 in. x 33 in.

D. 30 in. X 35 in.

Solder an alloy of lead and tin when sufficiently heated, will melt most nearly:

A. At a higher temperature than the melting temperatures of both tin and lead.

B. At a higher temperature than the melting temperatures of tin but not of lead.

C. At a higher temperature than the melting temperature of lead but not tin.

D. At a lower temperature than the melting temperatures of both tin and lead.