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142 Cards in this Set
- Front
- Back
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The type of drawing that views a buildng by looking directly at the front, top and side is referred to as a/an _______ drawing.
a. true isometric b. orthographic c. oblique d. cabinet |
b. orthographic
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The type of drawing that most closely resembles an object as the eye would see it is referred to as a/an ___ drawing.
a. true isometric b. orthographic c. oblique d. cabinet |
a. true isometric
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Which of the following constants are used when working with circles and areas?
a. 3.1416, .7854 and 14.7 b. .7854, 14.7 and .01745 c. 14.7, .01745 and 3.1416 d. .01745, 3.1416 and .7854 |
d
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How many 2" pipes can be supplied from a 6" header?
a. 3 b. 6 c. 9 d. 12 |
c. 9
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If the arc length fo 90degree = 1.57 x radius, find the outside arc of a standard 14" long radius weld ell.
a. 13-15/16" b. 23- 15/16" c. 33 15/16" d/ 43 15/16" |
??????
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Which is the correct formula for the area of a circle?
a. .7854 x d(squared) b. 3.1416 x D(squared) c. 3.1416 x D d. .7854 x R(squared) |
a
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Convert 8" to hundredths of a foot:
a. .27" b. .47" c. .67" d. .87" |
C. .67"
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To figure the end-to-end measurement of a piece of pipe when the end-to-center measurement is known the:
a.pipe make up must be added to the end to center measurement b. pipe makeup must be subtracted from the end to center measurement c. take off must be added to the end to center measurement d. take off must be subtracted from the end to center measurement |
d
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What is the mechanical advantage of a device when the resistance is 100 lbs and the effort is 5 lbs?
a. 20 b. 20 lbs c. 20 ft/lbs d. 500 lbs |
a 20
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Using the formula, Celsius = (Fahrenheit degrees - 32) / 1.8. Find the Celsius degrees if the fahrenheit reading is minus 40:
a. 4.44 b. 40 c. -40 d. 44.4 |
c -40`
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If the travel of a 45degree offset is known, what formula can be used to find the advance?
a. travel / .707 b. travel x 1.414 c. .707 x travel d. travel x .414 |
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c .707 x travel |
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When water changes to steam at atmospheric pressure it expands ____ times its original volume:
a.17 b. 170 c. 1,700 d. 17,000 |
c 1,700
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The specific weight of mercury is:
a. .0361 b. 13.6 c. 29.921 d. 34.16 |
b 13.6
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Name three methods of transferring heat:
a. conduction, convection and radiant b. thermodynamic, conduction and convection c. radiant, thermodynamic and conduction d. convection, radiant and thermodynamic |
a.
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The anode rod used in a hot water heater to protect it from corrosion is made of:
a. calcium b. magnesium c. aluminium d. boron |
b. magnesium
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A neautral reading on the PH scale is:
a. 4.1 b. 7.0 c. 9.8 d. 12.4 |
b
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.433 psig is equal to how high of a water column?
a. 1' b. 2' c. 3' d. 4' |
a 1'
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One cubic foot of water weighs :
a. 40 lbs b. 62.4 lbs c. 144 lbs d. 231 lbs |
b. 62.4 lbs
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Standard atmospheric pressure at sea level is:
a. 0 psia b. .491 psia c. 2.31 psia d. 14.7 psia |
d 14.7 psia
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One gallon of water weighs:
a. 1 lb b. 2.31 lbs c. 8.33 lbs d. 10.6 lbs |
c 8.33 lbs
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An increase in pressure will cause the boiling point of water to _____________:
a. increase b. decrease c. remain the same d. expad |
a increase
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What is the capacity in gallons of a water storage tank that measures 30" in diameter by 80" in length?
a. 2400 gallons b. 1041 gallons c. 600 gallons d. 244 gallons |
d. 244 gallons
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Which of the following is the decimal equivalent of 5/8?
a. .625 b. .580 c. .400 d. .375 |
a. .625
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The weight of 47 gallons of water is:
a. 108.5 lbs b. 203 lbs c. 376 lbs d. 391.5 lbs |
d. 391.5 lbs
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Which of the following are not acceptable as part of a personal fall arrest system?
a. shock absorbers b. dee rings c. body belts d. harnesses |
c. body belts
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Which of the following methods of access to a scaffold is prohibited?
a. climbing the cross braces b. using job made ladders c. using a manufactures approved clamp on ladder d. using frames with built in ladders |
a. climbing the cross braces
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What is the minimum safe clearance between cranes and energized power lines operating at 50kV or below?
a. 2ft b. 10 ft c. 15 ft d. 18 ft |
b. 10 ft
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Which of the following is a key element to a comprehensive safety and health program?
a. drug and alcohol testing b. record keeping c. pre-employment physicals d. hazard prevention and control |
d. hazard prevention and control
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Ladders with visible defects, such as broken rungs, cracked side rails, or broken steps must be:
a. tagged and removed from service b. repaired with #9 wire c. used with care d. used only on small jobs |
a. tagged and removed from service
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The only entity that has the responsibility and authority in appoint the competent person is:
a. the job steward b. the job superintendent c. the employer d. OSHA |
c. the employer
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Which of the following is not an essential element necessary to produce and ordinary fire?
a. fuel b. hydrogen c. heat d. oxygen |
b. hydrogen
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Which of the elements of a wire rope aid in absorbing "shock loads"?
a. the strand b. the wire c. the core d. the robe |
c. the core
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Which of the following types of copper tube has the smallest wall thickness?
a. M B. DWV C. K D. L |
B. DWV
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When testing a drainage system, the system should be filled with water or air for a minimum of:
a. 15 mins b. 30 mins c. 1 hr d. 2 hrs |
a . 15 mins
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When using water to test a drainage system the min feet of head allowed is:
a. 10 ft b. 20 ft c. 30 ft d. 40 ft |
a 10 ft
(Challenge question) |
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What is the min size required waste outlet for a shower?
a. 1 1/4" b. 1 1/2" c. 2" d. 2 1/2" |
c. 2"
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What is required distance from the sidewall or partition to the centerline of a handicapped toilet?
a. 18" b. 20" c. 22" d. 24" |
a. 18" (new code)
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The shape of a p-trap forms a/an
a. resistance to flow b. positive trap seal c. siphon d. air chamber |
b. positive trap seal
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According to the ada 17" is the max height permitted for the flood level rim of a:
a. water closet b. urinal c. lavatory d. bidet |
b. urinal
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A domestic hot water heater requires which of the following type of valve:
a. globe b. check c. temperature and pressure relief d. stop and waste |
c. temp and pressure relief
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What type of wrench should be used to prevent marking the surface of polished chrome pipe?
a. basin b. pipe c. strap d. monkey |
c. strap
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Water closets what types of traps?
a. p-trap b. integral c. running d. s-trap |
b. integral
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In a normal residential water heater what is the percentage of readily available hot water?
a. 50% b. 70% c. 90% d. 100% |
B 70%
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What type of valve should be installed between the hot water heater and the relief valve?
a. gate b. ball c. check d. no valve |
d. no valve
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The tube that extends into a water heater from the cold water supply is called the _____ tube:
a. refill b. thermostat c. dip d. anode |
c dip
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Which of the following is used to eliminate water hammer in a water supply system?
a. check valve b. pressure regulator c. shock absorber d. vacuum breaker |
c. shock absorber
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Which of the following is the best device for preventing backflow?
a. RPZ b. pressure vacuum breaker c. double check valve assembly d. dual check |
A RPZ
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There are ___ test cocks on a reduced pressure zone backflow prevention assembly:
a. 1 b. 2 c. 3 d. 4 |
d 4
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When can a potable water supply be connected to a non potable source?
a. when approved by an inspector b. never c. in an emergency d. with owners permission |
b Never
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Calculate the total amount of slope at 1/8" per foot, for a drainpipe that is 56' long
a. 3" b. 7" c. 8" d. 9" |
b. 7 "
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Storm sewers are designed to periodically run at:
a. 1.8 full b. 1/4 full c. 4/3 full d. full or nearly full |
d. full or nearly full
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Compute the grade of a drain line that falls 10" in a run of 88'
a. 1/16 per ft b. 1/8 per ft c. 3/16 per ft d. 1/4 per ft |
b 1/8 per ft
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The minimum size for a gravity water closet is:
a. 2" b. 3" c. 4" d. 5" |
b 3"
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The min depth of a trap seal is"
a. 1" b. 2" c. 3" d. 4" |
b 2"
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All of the following are reasons for at least one stack to extend through the roof except:
a. to prevent leakage in the system b. provide an outlet for pressure in the system c. provide an opening for an air supply d. proved an opening for odors to escape |
a
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One of the factors for determining the size of a vent is:
a. price or material b. its length c. space required d. type of building |
b its length
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An ejector pump is typically used to pump:
a. storm water b. subsurface water c. potable water d. sewage |
d. sewage
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What is the purpose of a circulating pump on a hot water system?
a. to prevent backflow b. to have instant hot water c. to decrease pressure d. to throttle the water |
b
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What color hose is used for oxygen, on oxy-acetylene welding and burning equipment?
a. black b. blue c. green d. red |
c green
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What type of flame should be used when using an oxy-acetylene torch?
a. neutral b. carbonizing c. oxidizing d. reducing |
a
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What is the smallest size DWV copper tube avalible?
a. 1/4" b. 1" c. 1 1/4" d. 1 1/2" |
c
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In medical gas installations a purge is required while brazing, along with what percent penetration?
a. at least 50% b. 75% c. 90% d 100% |
d 100%
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1/2 inch copper water tubing is equal to what size ACR tubing?
a. 3/8" b. 1/2" c. 5/8" d. 3/4" |
c. 5/8"
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Which of the following joint types utilizes "capillary action"
a. compression b. flared c. grooved d. soldered |
d.
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What is the max service temp recommended for copper lines when solder joints are used?
a. 250 degrees F b. 350 degrees F c. 400 degrees F d. 450 degrees F |
a
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The purpose of venting a hot water heater is to:
a. remove combustion has b. cool it off c. make it more efficient d. heat the water |
a
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insufficient primary aire on a gas burner causes a type of __ tipped flame
a. blue b. yellow c. red d. green |
b. yellow
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What type of valve is typically used on gas appliances?
a. ball b. stop and waste c. pressure reducing d. gas cock |
d
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When signaling a crane, which of the following signals designates lower the boom?
a. thumb up b. thumb down c. crossed arms d. index finger circling down |
b
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When using a come-a-long or cable winch hoist, what safety feature will indicate overloading?
a. lower hook will bend b. upper hook will bend c. becomes hard to pull d. handle will bend |
d
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What is the weakest part of a chain hoist?
a. chain b. lower hook c. hoist housing d. upper cook |
b
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compared to the strength of the robe, how much do knots usually develop?
a. 50 to 60% b. 70 to 80% c. 80 to 90% d. 90 to 100 % |
a
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When a loop is needed at any point between ends of a rope, the proper knot to tie is the ____
a. catspaw b. bowline c. clove hitch d. bowline on a bight |
d
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What is the advantage of the screw jack over the ratchet jack?
a. faster operation b. can be used in tight spaces c. easier to carry d. lifts heavier loads |
d
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Copper tubing marked with a 1/4" wide blue stripe is :
a. type k b. type l c. type m d. type dwv |
b
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A vent conector which is a part of a gravity- type venting system serving a gas water heater must have a rise of not less than:
a. 1" per foot b. 3/4" per ft c. 1/4" per ft d/ 1 1/2" per ft |
c
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Water supply piping should be designed on the basis of the :
a. min pressure available b. average pressure available c. max pressure available d. working pressure of fixtures and equipment to be served |
a
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The pipe fitting used to connect a 1 1/4" pipe directly into a 1" pipe is called a:
a. union b. sleeve c. elbow d. reducer |
d
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The slope of a gravity sewer is usually measured in inches per foot or in percent, a sewer with 1/4" per foot fall has approx what % slope?
a. 1 % slope b. 2% slope c. 3% slope d. 4% slope |
b
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The acceptable fitting for connecting a horizontal drain line with another horizontal drain line is a ____
a. sanitary tee b. side inlet 1/4 bend c. cross tee d. combination wye & 1/8th bend |
d
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The max permitted offset on a section 4" type b water heater gravity vent is:
a. 1/2 in per ft b. 1 in per ft c. 60 degrees from vertical d. 75 degrees from vertical |
c
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Which of the following is not permitted in making up a screwed pipe joint?
a. cleaning the threads with a wire brush b. blowing compressed air through the pipe c. applying "pipe dope" to the female threads d. leaving a few male threads exposed after screwing the ends together |
c
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The max temp at which water may be discharged under pressure into a drainage system is:
a. 120degrees F b. 140 degrees F c. 180 degrees F d. 200 degrees f |
b
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When a flushometer valve is installed on a water closet or urinal it shall be equipped with:
a. an approved vacuum breaker b. a reduced pressure backflow prevention c. a pressure vacuum breaker d. any vacuum breaker |
a
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The min air pressure required when testing welded gas piping is:
a. 10 psi b. 15 psi c. 50 psi d. 1 1/2 times the proposed max working pressure, but not less than 3psi |
d
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the purpose of the diaphragm bypass orifice in a flushometer valve is to:
a. crate the length of the flushing cycle b. equalize pressure on the inlet and discharge sides of the valve c. increase the wash-out effect d. reduce the drop in pressure of supply lines |
a
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All gas equipment shall have an accessible, approved manual shut off valve, installed within how many feet of the equipment it serves?
a. 2 ft b. 3ft c. 6 ft d. 10 ft |
c
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The primary purpose of installing a trap under a plumbing fixture is to prevent:
a. water from draining too fast b. sewer gas from backing up into the building c. articles from falling into the sewer line d. clogging of the sewer line |
b.
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either should only be used to test a gas line:
a. when it is to used for liquified petroleum gas b. when the immediate area is well ventilated c. when no flame is present d. must never be used |
???? b d?
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The unobstructed vertical distance bewteen the outlet of an over-rim water supply and the flood level of the fixture is called:
a. an air gap b. an air chamber c. a venturi opening d. an effective opening |
a
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The material not allowed for natural gas piping inside the building is:
a. brass pipe b. copper tubing c. wrought iron pipe d. thermoplastic pipe |
????
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Sanitaty drainage fittings for screwed pipe are so constructed that they give the waste line pitch per lineal foot of:
a. 1/8" b. 1/4" c. 3/8" d. 1/2" |
?????
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A backwater valve is used in a plumbing system to:
a. protect the potable water supply b. separate a sprinkler system from the water service c. prevent sewage from backing up into a building d. separate a domestic dishwasher from the waste system |
c
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A type "b" water heater vent, rising vertically in an attic space, and through the roof, shall terminate a min of __ ft above the highest connected flue collar:
a. 2ft b. 4ft c. 5ft d. 6ft |
c
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Floor drains or similar traps that are subjected to infrequent use, shall be protected by__
a. pouring oil in the trap b. siphoning all liquid from the trap c. pouring water down the drain d. a trap seal primer |
d
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A back water valve is a:
a. gate valve b. check valve c. globe valve d. needle valve |
b
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When a flushometer valve is in a closed position, the pressure in the upper chamber or chambers is:
a. less than that in the lower chamber b. more than that in the lower chamber c. the same as that in the lower chamber d. the same as that at the outlet side of the valve |
b
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Traps shall be constructed so the seal of the trap is a min of
a. 1" b. 2" c. 3" d. 4" |
b
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The specific gravity of natural gas is aprrox .60; the specific gravity of undiluted liquified petroleum gas is approx:
a. .5 b. .75 c. .9 d. 1.5 |
?????????
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Failure to provide a pressure reliefe valve in a closed water system containing a storage water heater will most likely result in:
a. overeating of the heater b. a steam explosion c. rupture of the water piping d. rupture or bulging of the storage tank |
b
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A pressure regulation must be installed on the water supply line to a plumbing system if the water pressure in the distribution main is greater than:
a. 50psi b. 100 psi c. 80 psi d. 125 psi |
c
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When the odor of gas indicates a leak in gas piping, the location of the leak should be determined by:
a. applied acidy to the suspected point b. filling the pipe with oxygen under pressure c. holding a burning match near the suspected point d. applying a non- corrosive leak detection fluid to the suspected point |
d.
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the purpose of a refill tube in a toilet tank is to:
a. keep the tank full b. refill the closet trap c. shut off the ballcock d. eliminate cross- connection |
b
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The depth of the lead in a cast iron bell- and spigot soil pipe joint must be at least:
a. 1/2" b. 3/4" c. 1" d. 1 1/2" |
c
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The waste from a domestic dishwasher must be disposed of through an approved:
a. vacuum breaker b. air gap c. water and overflow d. none of the above |
b
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What material is not allowed for drainage pipe?
a. SCH 40 ABS DWV b. SCH 40 PVC DWV c. orangeburg saturated d. hubbed cast iron |
c
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The purpose of the float (ball) on the ballcock of a flush tank water closet is to:
a. flush the water closet b. prevent siphonage c. shut off the ballcock d. allow the tank to empty when the float is raised |
c
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The discharge line from a sewage ejector must always be provided with a:
a. glove valve b. by pass c. check valve and shut off valve d. aire relief valve |
c
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Screwed pipe fittings for drainage shall be what type:
a. running thread type b. recessed drainage type c. black iron SCH 40 type d. not allowed |
b
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an example of prohibited plumbing trap is:
a. p trap b. s trap c. floor drain trap d. integral trap |
b
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What should happen if the pilot light on a burner, equipped with a thermocouple, goes out?
a. the main gas valve should remain closed b. the main gals valve should open immediately c. the thermostat should stop the burner when the room temp is 70degrees d.the gas pressure should be lowered |
a
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The main purpose for using pipe dope on threaded joints is to:
a. fill the joint spaces b. lubricate the threads c. harden the joints d. keep the threads from stripping |
b
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When soldering a type "L" copper pipe joint, you should apply the heat to the _____
a. fitting only b. pipe only c. pipe first , then fitting d. fitting first, then pipe |
c
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Which of the following schedule or type of PVC pipe is allowed to be threaded?
a. schedule 80 b. schedule 40 c. SDR d. foam core |
a
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When connecting galvanized steel pipe to copper pipe, which of the following items would be the preferred method?
a. dielectric union b. teflon tape c. iron pipe adapter d. copper adapter |
a
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The WOG marking on valves indicate:
a. water or gas only b. with out grease c. water, oil, and gas service d. with original gasket |
c
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A globe valve in a piping system is used for:
a. full flow operation b. throttling operation c. full on or full operation d. 90 degree turn to open or closed |
b
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The valve that closes by means of a wedge shaped disk is a ____ valve.
a. globe b. gate c. relief d. ball |
b
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A hydrostatic test is a/an:
a. air test b. smoke test c. water pressure test d. under water test |
c
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The distance from the center of an ADA water closet to the nearest side wall or partition must be a min of __
a. 12 in b. 15 in c. 18 om d. 24 in |
c
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What type of valve is used between the hot water tank and the relief valve?
a. OS and Y valve b. globe valve c. check valve d. no valve |
d
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Velocity can be reduced if:
a. flow is increased b. friction is reduced c. pipe sizes are increased d. pressure is increased |
c
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The most common type of pump used to circulate hot water in a building is a:
a. piston b. rotary c. centrifugal d. reciprocating |
c
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How can ductile pipe be cut?
a. snap cutter b. ratchet cutter c. abrasive cutter d. hacksaw |
c
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When testing backflow devices, what may happen when gauges are not above the critical level?
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??????
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What material has the highest expansion rate?
a. cast iron b. PVC c. brass d. steel |
b
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What does not constitute a restriction of flow?
a. 4x3 closet bend b. concentric reducer c. venturi fitting d. eccentric reducer |
a
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What is another name for a b-tank?
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?????
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What drainage fitting should be used for a 90degree change in direction on the horizontal?
a. cross TY b. combination Y and 1/8th bend c. 1/4 bend with side outlet d. double y |
b
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What fixtures can be supplied by 1 flushometer?
a. 2 urinals b. 1 water closet c. 1 water closet and 1 urinal d. none of the above |
b
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What is the recommended water velocity to reduce flow noise?
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??????
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When designed a water supply system, what is of most importance?
a. use of the building b. max pressure available c. min pressure available d. building height |
c
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What is the min size trap for a drinking fountain?
a. 2" b. 1" c. 1 1/2" d. 1 1/4" |
d
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Who is responsible for testing and maintenance of back flow devices?
a. DEP b. licensed plumber c. building owner d. cross control bureau |
c
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Where can a water heater that is not a direct bent type be installed?
a. bathroom b. kitchen c. nursery d. clothes closets |
b
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The min air gap for a lavatory is:
a. 2 pipe diameters b. 2" c. 2 times the radius d. 1" |
d
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What is the min gauge for a tubular trap?
a. 20 gauge b. 17 gauge c. 10 gauge d. 12 gauge |
???
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If no codes apply, what would the best pressure test be for a potable water distribution system?
a. 150 psi b. 1 1/2 times working pressure c. 2 times working pressure d. 80 psi |
a
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What type of hanger cannot be used for vertical pipe?
a. F & M hanger b. clevis hanger c. riser clamp d. pressure hanger |
b
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A water heater has an anode rod made of:
a. stainless b. burineum c. anodalite d. magnesium |
?
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A galvanic corrosion the ___ is the metal that corrodes:
a. cathode b. anode c. electrolyte d. electrode |
?
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The water heater tank is protected from corrosion and is known as the ___
a. cathode b. anode c. neutral barrier d. electrode |
?
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