Your Report
dn = 0.005 mm x 25.4 x 92
36-n/39
Wrong Q.1) Unions shall be installed in a water supply system within 12 inches of ___ A. a control valve B. a house valve C. regulating equipment (Correct Answer) D. transition fittings (Your Answer) Correct Q.2) Vent pipes protect fixture traps against ___ A. evaporation B. siphonage (Your Answer) -pressure C. clogging D. cross-connections Correct Q.3) Parallel vent stacks are required for drainage stacks that extend above the building drain ___ A. five stories or more B. 10 stories or more (Your Answer) C. 50 ft D. 100 ft Correct Q.4) The maximum fixture unit loading allowed on a 2-inches waste stack is ___ A. 4 B. 6 C. 8 D. 16 (Your Answer) Correct Q.5) All malleable iron water fittings shall be ___ A. 2 inch or smaller B. galvanized (Your Answer) zinc coated C. flanged D. removed Wrong Q.6) the color stripe on type "K" hard-drawn copper tubing is ___ A. green (Correct Answer) B. blue C. red (Your Answer) D. yellow
Wrong Q.7) Stills, sterilizers and similar equipment that produce waste shall be __ A. connceted directly to the building drains (Your Answer) B. indirectly connected to a lavatory taolpiece C. indirectly connected by means of an airgap (Correct Answer) D. directly connected to the building drain using an airbreak Correct Q.8) The size of the yoke vent that making the yoke vent intersects with the drainage stack is __ not less in diameter than either the drainage or the vent stack, whichever is smaller (Your Answer) B. a minimum of 4 inches C. two pipes sizes larger than the drain line D. two pipes sizes smaller than the drain line Correct A.
Q.9) Each vent pipe or stack shall extend through its flashing and shall terminate vertically above the roof at least ___ A. 6 inches (Your Answer) B. 12 inches C. 18 inches D. 24 inches Wrong Q.10) A standpipe for a clothes washer shall have a minimum and maximum length of _ A. 4in. and 12in. B. 18in. and 30in. (Correct Answer) C. 18in. and 24 in. D. 12in. and 36in. (Your Answer) Wrong Q.11) ABS or PVC-DWV piping installations exposed within ducts or plenums shall be limited to a flame-spread index of not more than 25 or a smoke index of 50 except for __ A. two-storey buildings B. structures not over three floors above grade (Your Answer) C. the restriction found in IS 5 and 9 D. single family homes (Correct Answer) Wrong Q.12) Sheet lead used for flashins of vents terminals shall be not less than __
A. 2 lbs per sq. ft B. 3 lbs per sq. ft (Correct Answer) C. 4 lbs per sq. ft (Your Answer) D. 5 lbs per sq. ft Correct Q.13) With few exceptions, all horizontal drainage piping shall be provided with a cleanout at ___ A. each 45-degree fitting B. its upper terminal (Your Answer) C. each offset Correct Q.14) The addition of leak-sealing additives to joint packing shall be __ A. legal B. by approval of the engineer C. by approval of the architect D. prohibited (Your Answer) Wrong Q.15) A horizontal drain pipe has an existing load 30 fixture units, after connecting the discharge pipe from an ejector rated 60 gpm, the total load on the horizontal drain pipe will be ___ A. 90 fixtures B. 120 fixtures (Your Answer) C. 130 fixtures D. 150 fixtures (Correct Answer) Wrong Q.16) Fittings on screwed pipe shall be of (the) __ A. cailk-drainage pipe B. galvanized steel (Your Answer) C. recessed drainage type (Correct Answer) D. duro iron Wrong Q.17) Ballcocks in water closet tanks shall be installed so that the critical level of the water inlet is above the full opening of the overflow pipe at least ___ A. 1/2 inch (Your Answer) B. 1inch (Correct Answer) C. 3inches D. 6inches Wrong Q.18) Condensate or wastewaster shall not drain over __
A. dry wells B. a public way (Correct Answer) C. leach pits D. the tailpiece of plumbing fixtures (Your Answer) Wrong Q.19) Horizontal termination of vents from any openable window, door opening, air intake or vent shaft shall be not less than ___ 3 FEET A. 1 ft B. 2 ft (Your Answer) C. 10 ft (Correct Answer) D. 12 ft Wrong Q.20) An indirect waste receptor shall not be installed in a ___ A. toilet room (Correct Answer) B. boiler room C. commercial kitchen D. air compressor equipment (Your Answer) Wrong Q.21) PEX tubing shall not be installed within the first ___ of piping connected too a water heater (in inches) A. 12 (Your Answer) B. 18 (Correct Answer) C. 24 D. 36 Correct Q.22) Backflow prevention devices installed in the water supply line to steam boilers shall be installed __A. 6 inhes above the floor B. 6 inches above the boiler C. 12 inches above the floor (Your Answer) D. 12 inches above the boiler Correct Q.23) All melleable iron vent or water fitting shall be __ A. concealed B. exposed C. galvanized (Your Answer) D. painted Correct
Q.24) One factor for determining the size of a vent pipe is ___ A. its accessibility B. its length (Your Answer) C. the type of building D. the price of material Correct Q.25) The piping material no approved in the code for water piping located inside a building is ___ A. brass B. CPVC C. asbestos cement (Your Answer) D. PEX Correct Q.26) The diameter of an individual vent shall not be less than ___ A. 1-1/4 inches (Your Answer) B. 1-1/2inches C. 2 inches D. 3 inches Wrong Q.27) No drain, overflow, or relief vent from a water supply system. or any other discharges under pressure shall be discharge to the drainage system A. by means of indirect waste through an airgap or airbreak (Your Answer) B. by direct connection (Correct Answer) C. through the garbage disposal D. with a branch wye tailpiece Wrong Q.28) Galvanized steel piping installed under a concrete floor slab within a building shall _ A. have a machine-applied coating (Correct Answer) or wrapping B. have a spiral wrap C. be installed without joints (Your Answer) D. be installed with brazed joints Wrong Q.29) __ are considered suds-producing fixtures A. kitchen sinks (Your Answer) B. bathtubs C. washing machine standpipes D. all of the above (Correct Answer) Correct
Q.30) The combination of vent pipes that will provide sufficient aggregate crosssectional vent area for required a 4-inch house sewer is ___ A. 1-2 inch and 4 - 1-1/2 inch B. 3-2 inch and 1 - 1-1/2 inch C. 2-2 inch and 1 - 1-1/2 inch D. 4 - 2 inch (Your Answer) Wrong Q.31) Cleanouts shall be designed to be __ A. threaded (Your Answer) B. gastight and watertight (Correct Answer) C. easy opening D. concealed Wrong Q.32) The primary reason for installing backflow prevention assemblies is to ___ A. prevent scalding prevent pollution and contamination of the potable water supply (Correct B. Answer) C. prevent mixing of hot and cold water D. prevent excessive pressure (Your Answer) Wrong Q.33) A straight run of building sewer will require cleanout at intervals not to exceed __ A. 50 ft (Your Answer) B. 75 ft C. 100 ft (Correct Answer) D. 300 ft Wrong Q.34) The type of valve required on a building supply to any building is a ___ A. fullway valve (Correct Answer) B. butterfly valve C. globe valve D. corporation valve (Your Answer) Wrong Q.35) No chemical waste shall be discharged into the ground, local sewer, or other means without __ A. being properly vented B. approved of the local Authority Having Jurisdiction (Correct Answer) C. first going through a chemical waste separator (Your Answer)
D. being properly trapped Wrong Q.36) Drains, overflows, or relief pipes from a water distribution system shall be connected to the building drain by _ A. indirect waste piping through a vented trap B. indirect watse by means of an airgap (Correct Answer) C. direct connection to the building drain D. direct conncetion to the building drain through a trap (Your Answer) Correct Q.37) The maximum discharge capacity capacity (for intermittent flow only), in gallons per minute, for one fixture unit is equal to ___ A. 7-1/2 gpm (Your Answer) B. 15 gom C. 30 gpm D. 50 gpm Correct Q.38) Copper water tube Type "M" may be installed within a building ___ A. below slab only B. above ground only (Your Answer) C. for cold water only D. if it is wrapped Correct Q.39) Combination temperature and pressure relief valve shall be installed ___ A. on all nonstorage-type water heaters (Your Answer) B. based on thier listing requirements and the manufacturer's instruction C. within 3 inches to 6 inches of the water heater D. in lieu of pressure-relief valves Wrong Q.40) All indirect waste piping that requires an airgap shall discharge into the building drainage system through ___ A. an automatic vent B. a drainage airgap of 1 inch minimum (Correct Answer) C. a trap (Your Answer) D. an airgap of two pipe diameters Correct Q.41) The acceptable fitting for connecting a horizontal drain line with another horizontal drain line is a __
A. sanitary tee B. cross tee C. combination Y and 1/8 bend (Your Answer) D. side inlet 1/4 bend Wrong Q.42) The code requirement for "and adequate supply of potable running water" is for A. cleansing and sanitation (Correct Answer) B. protection of trap seals C. water-cooled equipment D. hydronic systems (Your Answer) Wrong Q.43) The available pressure at the water meter is 80 psi. At the highest supply outlet, 36 feet above the water meter, the pressure would be __ psi A. 62 (Correct Answer) B. 44 C. 116 D. 80 (Your Answer) Correct Q.44) Vents terminals in locations having minimum design temperatures below 0 deg F shall be a minimum of ___ A. A - 2 inches (Your Answer) B. B - 4 inches C. C - one pipe size larger than the required D. A and C apply Wrong Q.45) Building sewers 8 inches or larger may have a slope of not less than ___ A. 1/16 inch per foot (Correct Answer) B. 1/2 inch per foot C. 1/4 inch per foot (Your Answer) D. 1/8 inch per foot Wrong Q.46) All backflow devices or assemblies shall be tested by a ___ A. licensed agent B. representative from the Authority Having Jurisdiction (Your Answer) C. certified backflow tester (Correct Answer) D. third-party certified agency Correct Q.47) The clearance required in front of a 2-inch cleanout shall not be less than __
A. 6 inches B. 12 inches (Your Answer) C. 18 inches D. 24 inches Wrong Q.48) Except for plastic pipe, in lieu of water test, drainage piping may be tested with__ A. air (Correct Answer) B. ether C. smoke (Your Answer) D. gas Wrong Q.49) Water piping may be installed in the same trench with sewer piping made of ___ A. cast iron (Correct Answer) B. clay (Your Answer) C. asbestos cement D. bituminized fiber Correct Q.50) The minimum size drain line for wall-hung urinal is __ inches A. 2 (Your Answer) B. 1-1/4 C. 1-1/2 D. 3 Wrong Q.51) Each pressure relief valve installed inside of the building shall have a ___ A. full sized drain extended to outlet (Correct Answer) B. check valve to prevent backflow (Your Answer) C. trapped drain line D. drain that terminates 30 inches or more above grade Wrong Q.52) CPVC water pipe may be used for hot and cold water distribution systems ___ A. in residences only (Your Answer) B. within a building (Correct Answer) C. below ground only D. aboveground only Correct Q.53) Joints at the roof around vent pipes shall be made watertight by the use of ___
A. waterproof epoxy sealer B. three layers 15 pound felt C. hot tar compound D. flashings (Your Answer) Wrong Q.54) Vents terminating in roof areas used for sunbathing shall be extended above the roof at least ___ A. 7 ft (Correct Answer) B. 10 ft (Your Answer) C. 12 ft D. 15 ft Wrong Q.55) Copper tube shall not be used for ___ A. chemical waste (Correct Answer) B. aboveground drainage piping C. water piping (Your Answer) D. underground drainage piping Wrong Q.56) Building supplies shall be no smaller than that required for installation and, in no case, smaller than ___ A. 1/2 inch (Your Answer) B. 3/4 inch (Correct Answer) C. 1 inch D. 2 inches Correct Q.57) If, due to structural conditions, horizontal vents are less than 6 inches above the overflow rim of the fixture, the horizontal portion shall be installed with __ A. venting material and fittings B. drainage material and fittings and grade to drain (Your Answer) C. smaller diameter piping D. larger diameter piping Wrong Q.58) Flaring tools are used to make joints for ___ A. hard Type K copper tubing (Your Answer) B. soft copper water tubing (Correct Answer) C. yellow brass water piping D. aluminum water piping Wrong
Q.59) The maximum distance between manholes shall not exceed __ A. 50 ft B. 100 ft (Your Answer) C. 200 ft D. 300 ft (Correct Answer) Wrong Q.60) A water piping system with a pressure of 110 psi will require a(an) ___ A. reduced pressure backflow device B. extra-heavy pipe and fittingS C. pressure regulator and strainer (Correct Answer) D. pressure-relief valve (Your Answer) Wrong Q.61) Above all downstream piping for lawn sprinker system atmospheric vacuum breakers (in inches) A. 1 B. 6 (Correct Answer) C. 12 (Your Answer) D. 24 Wrong Q.62) No chemical waste vent shall ___ A. terminate outside the building B. connected to any vent from water service lines C. intersect vents for other services (Correct Answer) D. connect to any waste line (Your Answer) Wrong Q.63) Threads in drainage fittings shall be tapped to allow for __ A. adjustment (Your Answer) B. grade (Correct Answer) C. expansion D. economy Wrong Q.64) A drainage stack extends 14 stories above the building drain and is served by a parallel vent stack. A relief yoke vent connection between the vent stack and the drainage stack is required at ___ A. floors 5 and 10 (Your Answer) B. floors 4 and 9 (Correct Answer) C. floors 4 and 10 D. floors 5 and 9 Wrong
Q.65) The distance between a water heater and the union on the water lines shall not be more than ___ A. 6 inches B. 12 inches (Correct Answer) C. 18 inches (Your Answer) D. 24 inches Wrong Q.66) above the highest part of a urinal equipped with a flushometer valve (in inches) A. 1 (Your Answer) B. 6 (Correct Answer) C. 3 D. 12 Wrong Q.67) The minimum size condensate waste pipe from a 12-ton refrigeration unit is ___ A. 3/4 inch (Correct Answer) B. 1 inch (Your Answer) C. 1-1/4 inches D. 1-1/2 inches Correct Q.68) The minimum sizes of vertical and horizontal drainage shall be determined from the __ A. location of fixturtes B. type of building C. total fixture units (Your Answer) D. total bathrooms Wrong Q.69) The owner shall make and keep a __ A. blueprint of the construction (Your Answer) B. log of all chemicals used permanentrecord of all piping and venting carrying chemical waste (Correct C. Answer) D. record of materials used for all chemical waste Wrong Q.70) If the trap from a sink located in a bar cannot be vented ___ the drain shall discharge through an airgap or airbreak into an approved receptor that is vented B. the fixture must be relocated (Your Answer) C. the discharge may be pumped to an approved receptor (Correct Answer) A.
D. a drum trap shall be used Correct Q.71) An approved material for closet screws or bolts is __ A. steel B. aluminum C. lead D. brass (Your Answer) Wrong Q.72) Floor drains in walk-in coolers shall discharge __ A. to a grease interceptor (Your Answer) B. directly to the exterior of the building C. directly to tha main building drain to a separate drainage line discharging into an outside receptor through an D. airgap or airbreak (Correct Answer) Wrong Q.73) Water shall not be discharged under pressure directly to the waste system if it has a temperature of __ or more A. 212 deg F B. 180 deg F (Your Answer) C. 140 deg F (Correct Answer) D. 232 deg F Wrong Q.74) Every indirect waste interceptor recieving discharge containing particles that would clog the receptor drain shall __ A. A - have a readily removable beehive strainer (Correct Answer) B. B - drain into a funnel connected to the floor sink C. C - be connected directly into the drainage system D. both A and B (Your Answer) Unanswered Q.75) The maximum fixture units allowed on a 4-inch horizontal drain with a 1/8 inch per foot slope is A. 173 (Correct Answer) B. 225 C. 215 D. 256 Correct Q.76) Condensate from fuel-burning condensing appliances shall be collected and discharged ____
A. to a planter box to a public way B. to an approved plumbing fixture or disposal area (Your Answer) C. directly connected to the building sewer Correct Q.77) Wall-hung lavatories shall be supported by ___ A. their connections B. metal hangers (Your Answer) C. rigid traps D. wooden legs Wrong Q.78) A solidly formed subbase is required as to pitch shower pan linings to weep holes in the subdrain with a fall of ___ A. 1/8 inch per foot (Your Answer) B. 1/4 inch per foot (Correct Answer) C. 1/16 inch per foot D. 1/32 inch per foot Wrong Q.79) Other than system sized by the use of Table 6-6, the maximum velocity of a cold water system containing copper and copper alloy tube and fittings shall be limited to ___ A. 5 ft per second (Your Answer) B. 8 ft per second (Correct Answer) C. 10 ft per second D. 15 ft per second Wrong Q.80) No plumbing fixtures that is receiving discharge from indirect waste pipes shall be installed until fordt approved by the __ A. Architect B. local health department (Your Answer) C. Authority Having Jurisdiction (Correct Answer) D. mechanical engineer Unanswered Q.81) Under certain conditions, traps serving sinks that are part of the equipment of bars, soda fountains, and counters __ A. need not to be vented (Correct Answer) B. need relief vents C. may be wet vented D. shall be vented Wrong
Q.82) Immediately ahead of each water-supplied appliance and each slip joint or nonmetallic water supply connection required a _ A. control valve (Correct Answer) B. check valve C. backwater valve (Your Answer) D. solenoid valve Wrong Q.83) Pipes carrying wastewater from swimming or wadding pools, including pool drainage, backwash from filters, and discharge from pumps, shall be ___ A. installed as an indirect waste (Correct Answer) B. connected to a holding tank (Your Answer) C. connected to an interceptor D. directly connected to the building drain and properly trapped and vented Wrong Q.84) Water valves 2-1/2 inches and larger may have bodies that are ___ A. galvanized (Your Answer) B. die-cast C. aluminim core D. cast iron (Correct Answer) Wrong Q.85)
A 2-inch vent pipe will serve a total of __
A. 14 bathtubs B. 16 showers (Your Answer) C. 24 lavatories (Correct Answer) D. 15 water closet Unanswered Q.86) Condensate waste shall discharge to the drainage system by means of a(an) __ A. indirect waste pipe (Correct Answer) B. direct waste pipe C. Johnson Tee D. backflow preventer Wrong Q.87)
Drinking fountain may be installed with _
A. a hose connection (Your Answer) B. a condensate pump C. a Hartford loop D. indirect waste (Correct Answer) Unanswered
Q.88) Macerating toilet system shall be restricted to single bathrooms for ___ A. private use B. public use C. no restriction (Correct Answer) D. not allowed Unanswered Q.89) ___ tube shall not be used for chemical or industrial waste, as defined in Section 811.1 A. glass B. PVC C. cast iron D. copper (Correct Answer) Correct Q.90) The tailpiece diameter for lavatories and drinking fountains shall no be less than ___ A. 1-1/4 inches (Your Answer) B. 1-3/8 inches C. 1-1/2 inches D. 1-3/4 inches Wrong Q.91) Atmospheric-type vacuum breakers shall not be subjected to ___ A. back pressure (Correct Answer) B. hot water C. use in a laboratory D. intermittent use (Your Answer) Correct Q.92) Each outlet in a nonpotable waterline that may be used for drinking purposes shall be posted ___ A. DANGER-PROCESSED WATER B. DANGER-CONTAMINATED WATER C. DANGER-POLLUTED WATER D. CAUTION-NONPOTABLE WATER DO NOT DRINK (Your Answer) Correct Q.93) The maximum horizontal length permitted for a required 2-inch vent pipe is ___ A. 20 ft B. 40 ft (Your Answer) C. 60 ft D. 120 ft Correct
Q.94) Changes in direction of copper tubings may be made with ___ A. bending equipment (Your Answer) B. plastic fittings C. metallic fittings D. heat annealing Wrong Q.95)
All receptors recieving the discharge from indirect waste piping shall be ___
A. approved for the proposed use B. shaped and sized to prevent splashing or flooding (Your Answer) C. located where they are readily accessible for inspection and cleaning D. all of the above (Correct Answer) Unanswered Q.96) Lead waste pipe that may recieve discharge containing acid or corrsive chemicals, and each vent pipe connected to it, shall be not less than ___ wall thickness A. 1/16 inch B. 3/32inch C. 1/8inch (Correct Answer) D. 5/32inch Correct Q.97) The minimum size vent that may serve a 4-inch trap is __ A. 1-1/4 inches B. 1-1/2 inches C. 2 inches (Your Answer) D. 4 inches Wrong Q.98) Water piping pressure shall be for a period of not less than ___ A. 5 minutes B. 10 minutes C. 15 minutes (Correct Answer) D. 30 minutes (Your Answer) Wrong Q.99) Horizontal vent pipes shall be level or so graded as to drip back by gravity to ___ A. the main vent pipe (Your Answer) B. the drainage pipe they serve (Correct Answer) C. the loop vent D. the main soil stack Correct
Q.100) Sumps for macerating toilets shall be __ A. above ground B. a minimum of 10 gallons C. watertight and gastight (Your Answer) D. in the same room as the toilet Correct Q.101) The maximum trap loading for a 3-inch trap is A. 1 unit B. 3 units C. 4 units D. 6 units (Your Answer) Correct Q.102) ABS and PVC DWV piping installation shall be limited to structures of __ * A. noncombustible construction B. unlimited height (Your Answer) C. two stories in height D. combustible construction Wrong Q.103) Hard-drawn copper tubing, marked with a blue stripe, is referred to as ___ A. Type "K" (Your Answer) B. Type "L" (Correct Answer) C. Type "M" D. Type "DWV" Correct Q.104) A domestic dishwasher, with independent drain, has a drainage fixture unit value of __ * A. 2 (Your Answer) B. 3 C. 4 D. 1 Correct Q.105) The fitting that is required for making the yoke vent intersection with the drainage stack is a ___ A. sanitary tee B. tapped tee C. double tee branch D. wye branch (Your Answer)
Wrong Q.106) The quantity of water required to be supplied to every plumbing fixture shall be represented by ___ A. gallons per minute (Your Answer) B. fixture units (Correct Answer) C. feet per second D. available head pressure Correct Q.107) Joints between steel and cast-iron pipe shall be __ A. threaded only B. caulked or threaded (Your Answer) C. caulked only D. brazed Wrong Q.108) Showers in all buildings shall be provided with individual contrrol valves of the ___ A. A- pressure balance type B. B- thermostatic mixing valve type C. C- 140 degree F limit control type (Your Answer) D. A and B apply (Correct Answer) Correct Q.109) Approved strainers having an approved waterway area are not required for ___ A. kitchen sinks B. lavatories C. urinals (Your Answer) D. bathtubs Wrong Q.110) The clear space in front of any water closet or bidet shall not be less than ___. A. 12 inches B. 18 inches (Your Answer) C. 24 inches (Correct Answer) D. 30 inches Wrong Q.111) Increasing vents one pipe size will __ A. provide increased drainage B. allow a uniform installation (Your Answer) C. allow vents of longer vents (Correct Answer)
D. allow vents to be shorter Wrong Q.112) The drainage line from an ejector shall be provided with a ___ A. backwater or swing check valve, and gate valve (Correct Answer) B. backwater valve or double check valve and globe valve C. backwater valve, gate valve and flange (Your Answer) Correct Q.113) Water lifts, expansion tanks, cooling jackets, sprinkler system, drip or overflow pans, and other similar devices that discharge clear wastewater into the building drainage system shall ___ A. be directly trapped B. be discharged into an interceptor C. discharged into an indirect waste receptor (Your Answer) D. be individually vented Correct Q.114) 3 inch horizontal drainage piping shall have a grade of slope of not less than ___ A. 1/4 inch per foot (Your Answer) B. 1/8 inch per foot C. 1/2 inch per foot D. 1 inch per foot Wrong Q.115) Water piping system shall be designed on the basis of the ___ A. maximum pressure (Your Answer) B. average service pressure C. average residual pressure D. minimum pressure (Correct Answer) Wrong Q.116) The drainage fixture unit value assigned to a bathtub or combination bath/shower is __ A. 1.5 (Your Answer) B. 2.0 (Correct Answer) C. 2.5 D. 3.0 Correct Q.117) After allowing for friction and other pressure losses, the residual water pressure shall be at least ___. A. 0.433 psi
B. 7.5 psi C. 15 psi (Your Answer) D. 29 psi Correct Q.118) Cast-iron fittings, up to and including two inches in size, when used in connection with potable water piping, shall be ___ A. extra heavy B. flanged C. disallowed D. galvanized (Your Answer) Wrong Q.119) Except for alleys and streets, vent termination from property lines shall not be less than __ A. 1 ft (Your Answer) B. 2 ft C. 3 ft (Correct Answer) D. 4 ft Wrong Q.120) The distance from the vent pipe opening to any vertical surface shall be at least __ A. 6 inches B. 12 inches (Correct Answer) C. 18 inches D. 24 inches (Your Answer) Wrong Q.121) Whenever fixtures and/or fixture fittings are installed that require a residual water pressure higher than 15 pounds per square inch (103.5 kPa)__ A. A- that minimum pressure shall be provided (Correct Answer) B- provision shall be made to use fixtures that do not require higher residual B. pressure C. C- the piping sytem shall be not less than copper tubing Type L D. A and C apply (Your Answer) Correct Q.122) The minimum size trap and trap arm for a bathtub is __ A. 1-1/2 inches (Your Answer) B. 2 inches C. 2-1/2 inches D. 3 inches Wrong Q.123) Copper tubing used for water piping under concrete slab within a building shall be
___ A. installed with brazed joints with cast brass fittings (Correct Answer) B. protected with a factory applied coating C. installed without joints where possible D. installed with Type K copper tube with brazed joints (Your Answer) Correct Q.124) Every abandoned building sewer shall be plugged or capped __ A. at the sidewalk or curb B. within 5 ft of the property line (Your Answer) C. at the street tap D. where convenient Wrong Q.125) Whenever practicable, all piping recieving chemical waste shall be ___ A. concealed B. readily accessible (Correct Answer) C. covered (Your Answer) D. in clear view Correct Q.126) A domestic dishwashing machine shall be connected to the drainage system by using __ A. an approved airgap fitting (Your Answer) B. a Hartford loop C. a double check valve D. a direct connection Correct Q.127) The pipe size for the common vent serving lavatories installed back-to-back shall not be less than __ inch(es) A. 1 B. 1-1/4 C. 1-1/2 (Your Answer) D. 2 Correct Q.128) Above the overflow rim of a vat (in inches) A. 1 B. 2 C. 6 (Your Answer) D. 12 Correct
Q.129) Sewer and water piping may be installed in the same trench (with the proper clearances) if the sewer piping is __ A. cast iron B. PVC C. extra strength vitrified clay D. any of the above (Your Answer) Correct Q.130) Changes in direction of vent piping shall be made by __ A. heating the pipe and bending B. welded joints where possible C. threaded fittings of caulked joints D. appropriate use of fittings (Your Answer) Wrong Q.131) The developed length from the fixture outlet of a bar sink to a receptor shall not exceed __ ft? A. 6 (Your Answer) B. 5 (Correct Answer) C. 3 D. 15 Wrong Q.132) Devices that are not regularly classified as plumbing fixtures, but which have a drip or drainage outlets, shall be drained by __ A. a connection directly to the building indirect waste pipes discharging into an open receptor through an airgap or B. airbreak (Correct Answer) C. direct connection to a storm sewer D. indirect waste piping connected to the building drain (Your Answer) Wrong Q.133) Except for plastic piping, water piping systems may be tested with ___ A. 10 psi air pressure B. 50 psi air pressure (Correct Answer) C. 10 psi Carbon dioxide D. 60 psi Carbon dioxide (Your Answer) Wrong Q.134) Flexible corrugated connectors of copper or stainless steel for water heater connectors shall be limited to ___ A. 12 inches (Your Answer) B. 18 inches C. 24 inches (Correct Answer)
D. 36 inches
