PLUMBING EXAM 2026/2027 | ALL
CHAPTERS COVERED| STUDY GUIDE
EXAM WITH 130 ACCURATE
QUESTIONS AND DETAILED VERIFIED
ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A+
Amjourneymanmplumbermandmanmapprentice,mwhomarememployedmbymammastermplumber,mareminst
allingmthemDWV-systemmandmwatermdistributionmsystemminmam2-
½mstorymsinglemfamilymdwelling.mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorr
ectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mAmtrapmthatmser
vesmamsinglemshowermstallmthatmismequippedmwithmamhandmshower,mamrainmhead,mandmamstandardms
howermheadmshallmbemnomlessmthanm________minmminimummdiameter
A)m1-½"mB)m2"mC)m2-½"mD)m3"m-mCORRECTmANSWERm2minches
Amjourneymanmplumbermandmapprenticemareminstallingm3-inchmfloormdrainsminmanmopen-parking-
garagemthatmismsubjectmtomfreezingmtemperatures.mQUESTION:mWhatmanswermbelowmshallmbemcon
sideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstateme
nt:mTheminstallationmofmtrapsmatmthemfloormdrainmlocationsmwhichmaremfoundmsusceptiblemtomfreezi
ngmtemperaturesmmaymbem__________.
A)Increasedmtom4-inchmB)mEliminatedmC)mWrappedmwithmfreezemprotectionmcablemD)mInsulatedm-
mCORRECTmANSWERmeliminated
Amjourneymanmplumbermandmapprenticemareminstallingmlabmsinksmwithmfaucetsmthatmaremconnecte
dmtomanmacidmwastemsystemmfor-
(specialmhazardousmwaste)minmammedicalmlab.mWhatmanswermbelowmshallmbemconsideredmmostmcor
,rectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mVacuummbreak
ersmshallmbeminstalledmwithmthemcriticalmlevelmatmleastm_____-
inchesmabovemthemfloodmlevelmrimmofmthemfixturemtheymservemandmonmthemdischargemsidemofmthemla
stmcontrolmvalvemtomthemfixture.
A)m12mB)m6mC)m18mD)m3m-mCORRECTmANSWERm6minches
Whatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingmc
odemknowledge"mrelatedmstatement:mNomplumbingmpermitmshallmbemissuedmformcrossmconnectionm
installationsmthatmrequirem______________muntilmthemapplicationmformampermitmismaccompaniedm
bymamlettermofmapprovalmfrommthemMassachusettsmDepartmentmofmEnvironmentalmProtectionmormit
smdesignee.
A)mRPBPmB)mAm"criticalmlevel"mheightmC)mAtmosphericmvacuummbreakersmD)mWatermrecyclingmsyste
msm-mCORRECTmANSWERmreducedmpressurembackflowmpreventerm(RPBP)
:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingm
codemknowledge"mrelatedmstatement:mThemwastemdischargemfrommsafemwastempansmservingmwate
rmheatersmormhotmwatermstoragemtanksmwheremtheremism_______mbelowmandmshallmbempipedmindire
ctlymtomamproperlymtrappedmandmventedmfixture.
A)mPeoplemB)mOccupancymC)mFloorsmD)mPlumbingmconnectionsm-mCORRECTmANSWERmoccupancy
GIVEN:mAmjourneymanmplumbermandmanmapprentice,m(whomarememployedmbymammastermplumber),
mareminstallingmthemsanitarymDWVmandmwatermdistributionmsystemminmamfive-
storymresidentialmcondominiummcomplex.mQUESTION:mWhatmanswermbelowmshallmbemconsideredm
mostmcorrectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mCPVC
-
(ChlorinatedmPolyvinylmChloride)mpipemandmfittingsmmaymbemusedmprovidedmthatmnonemofmthismma
terialmismlocatedmwithinm____-
inchesmofmanymconnectionmtomamhotmwatermtankmasmdefinedminmMGL.mc.m142,m§m17
,A)m12mB)m18mC)m20mD)m24mE)m30m-mCORRECTmANSWERm24minches
:mAmjourneymanmplumbermandmapprenticemaremroughing-
inmmultiplemfixturesminmamnewmfitnessmcenter.mThemfacilitymwillmincludemamjuicembar,mtemporarymda
ycaremroom,mmen'smandmwomen'smtoiletmfacilitiesmandmmen'smandmwomen'smlockermrooms.mQUES
TION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plum
bingmcodemknowledge"mrelatedmstatement:mAm________-
ventmismambranchmventmthatmservesmtwomormmoremfloor-
outletmfixturesmthatmarembatterymwasted.mThemventmextendsmfrommthemtopmofmthemhorizontalmsoilm
and/ormwastembranchminmfrontmofmthemlastmfixturemwastemandmconnectsmtomamventmstackmormstackm
ventmthatmismadjacentmtomthemdown-streammendmofmthemhorizontalmbranch.
A)mSidemB)mLoopmC)mReliefmD)mCircuitm-mCORRECTmANSWERmloop
MATCH:m
Elevatedmpressurem
Flowmdesignationm
TenmP.S.I.G.mormless
m Lessmthanm2-P.S.Im
A)m3mP.S.I.G.mormtenmtimes
B)mInletmpressurem
m C)mE.H.D.
D)mProf.mEngineerm-mCORRECTmANSWERmelevatedmpressure-md
flowmdesignation-c
TenmP.S.I.G.mormless-a
Lessmthanm2-P.S.I-b
N:mAmjourneymanmplumbermisminstallingmcategory-
Imgasmappliancesmandmequipmentminmthembasementmofmambuilding.mAm120,000mBTU/hr.mboilermandm
, 40,000mBTU/hr.mwatermheatermarembeingminstalled.mQUESTION:mWhatmanswermbelowmshallmbemcon
sideredmmostmcorrectmtomcompletemthemfollowingm"Gasmcodemknowledge"mrelatedmstatement:mTh
emboilermrequiresmamminimummofm_____-cu.mft.mofmairmtomsupportmpropermcombustion
A)m2,400mcu.mft.mB)m120msq.min.mC)m3,200msq.mft.mD)m800mcu.mft.m-
mCORRECTmANSWERm2,400mcu.mft.m120,000/50
)mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowing
m"Gasmcodemknowledge"mrelatedmstatement:mThemcodemwouldmrequiremthemgasmventmpenetratingm
themroofmin-[FIGURE-TP-B-Q1-1A:mGASmVENTmSIZING]masmidentifiedmatmpoint-
[A]mtombemnotmlessmthanm______mabovemanymportionmofmambuildingmwithinm10-feetmhorizontally.
A)m24"mB)m3-feetmC)m30-inchesmD)mForty-two-inchesm-mCORRECTmANSWERm24
InmMassachusettsmcoppermtubingmandmfittingsmmaymbemusedmformnaturalmgasmpiping
A)mProvidedmthatmthemtubingmismtype-
kmwithmflaredmfittingmconnections.mB)mWhenmapprovedmbymthemauthoritymhavingmjurisdiction.
C)mAtminteriormlocationsmonlymandmnotmconcealed.m
D)mIfmthemgasmcontainsmnommoremthanm.03mgrainsmofmhydrogenmsulfidemperm100mcu.mft.mofmgas.m-
mCORRECTmANSWERmIfmthemgasmcontainsmnommoremthanm.03mgrainsmofmhydrogenmsulfidemperm100m
cu.mft.mofmgas
:mAmjourneymanmplumbermandmapprentice,mwhomarememployedmbymammastermplumber,mareminstalli
ngmamnaturalmgasmfiredmcategory-
1mboilermandmwatermheatermtomanminterior,mclaymtilemlined,mmasonrymchimney.mWhenmmeasuredmin
mcompliancemwithmthemcodemthemchimneym"height"mism48-
feet.mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollo
wingm"Gasmcodemknowledge"mrelatedmstatement:m_____mismthemmaximummallowablemamountmofm
6-
CHAPTERS COVERED| STUDY GUIDE
EXAM WITH 130 ACCURATE
QUESTIONS AND DETAILED VERIFIED
ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A+
Amjourneymanmplumbermandmanmapprentice,mwhomarememployedmbymammastermplumber,mareminst
allingmthemDWV-systemmandmwatermdistributionmsystemminmam2-
½mstorymsinglemfamilymdwelling.mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorr
ectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mAmtrapmthatmser
vesmamsinglemshowermstallmthatmismequippedmwithmamhandmshower,mamrainmhead,mandmamstandardms
howermheadmshallmbemnomlessmthanm________minmminimummdiameter
A)m1-½"mB)m2"mC)m2-½"mD)m3"m-mCORRECTmANSWERm2minches
Amjourneymanmplumbermandmapprenticemareminstallingm3-inchmfloormdrainsminmanmopen-parking-
garagemthatmismsubjectmtomfreezingmtemperatures.mQUESTION:mWhatmanswermbelowmshallmbemcon
sideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstateme
nt:mTheminstallationmofmtrapsmatmthemfloormdrainmlocationsmwhichmaremfoundmsusceptiblemtomfreezi
ngmtemperaturesmmaymbem__________.
A)Increasedmtom4-inchmB)mEliminatedmC)mWrappedmwithmfreezemprotectionmcablemD)mInsulatedm-
mCORRECTmANSWERmeliminated
Amjourneymanmplumbermandmapprenticemareminstallingmlabmsinksmwithmfaucetsmthatmaremconnecte
dmtomanmacidmwastemsystemmfor-
(specialmhazardousmwaste)minmammedicalmlab.mWhatmanswermbelowmshallmbemconsideredmmostmcor
,rectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mVacuummbreak
ersmshallmbeminstalledmwithmthemcriticalmlevelmatmleastm_____-
inchesmabovemthemfloodmlevelmrimmofmthemfixturemtheymservemandmonmthemdischargemsidemofmthemla
stmcontrolmvalvemtomthemfixture.
A)m12mB)m6mC)m18mD)m3m-mCORRECTmANSWERm6minches
Whatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingmc
odemknowledge"mrelatedmstatement:mNomplumbingmpermitmshallmbemissuedmformcrossmconnectionm
installationsmthatmrequirem______________muntilmthemapplicationmformampermitmismaccompaniedm
bymamlettermofmapprovalmfrommthemMassachusettsmDepartmentmofmEnvironmentalmProtectionmormit
smdesignee.
A)mRPBPmB)mAm"criticalmlevel"mheightmC)mAtmosphericmvacuummbreakersmD)mWatermrecyclingmsyste
msm-mCORRECTmANSWERmreducedmpressurembackflowmpreventerm(RPBP)
:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plumbingm
codemknowledge"mrelatedmstatement:mThemwastemdischargemfrommsafemwastempansmservingmwate
rmheatersmormhotmwatermstoragemtanksmwheremtheremism_______mbelowmandmshallmbempipedmindire
ctlymtomamproperlymtrappedmandmventedmfixture.
A)mPeoplemB)mOccupancymC)mFloorsmD)mPlumbingmconnectionsm-mCORRECTmANSWERmoccupancy
GIVEN:mAmjourneymanmplumbermandmanmapprentice,m(whomarememployedmbymammastermplumber),
mareminstallingmthemsanitarymDWVmandmwatermdistributionmsystemminmamfive-
storymresidentialmcondominiummcomplex.mQUESTION:mWhatmanswermbelowmshallmbemconsideredm
mostmcorrectmtomcompletemthemfollowingm"Plumbingmcodemknowledge"mrelatedmstatement:mCPVC
-
(ChlorinatedmPolyvinylmChloride)mpipemandmfittingsmmaymbemusedmprovidedmthatmnonemofmthismma
terialmismlocatedmwithinm____-
inchesmofmanymconnectionmtomamhotmwatermtankmasmdefinedminmMGL.mc.m142,m§m17
,A)m12mB)m18mC)m20mD)m24mE)m30m-mCORRECTmANSWERm24minches
:mAmjourneymanmplumbermandmapprenticemaremroughing-
inmmultiplemfixturesminmamnewmfitnessmcenter.mThemfacilitymwillmincludemamjuicembar,mtemporarymda
ycaremroom,mmen'smandmwomen'smtoiletmfacilitiesmandmmen'smandmwomen'smlockermrooms.mQUES
TION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowingm"Plum
bingmcodemknowledge"mrelatedmstatement:mAm________-
ventmismambranchmventmthatmservesmtwomormmoremfloor-
outletmfixturesmthatmarembatterymwasted.mThemventmextendsmfrommthemtopmofmthemhorizontalmsoilm
and/ormwastembranchminmfrontmofmthemlastmfixturemwastemandmconnectsmtomamventmstackmormstackm
ventmthatmismadjacentmtomthemdown-streammendmofmthemhorizontalmbranch.
A)mSidemB)mLoopmC)mReliefmD)mCircuitm-mCORRECTmANSWERmloop
MATCH:m
Elevatedmpressurem
Flowmdesignationm
TenmP.S.I.G.mormless
m Lessmthanm2-P.S.Im
A)m3mP.S.I.G.mormtenmtimes
B)mInletmpressurem
m C)mE.H.D.
D)mProf.mEngineerm-mCORRECTmANSWERmelevatedmpressure-md
flowmdesignation-c
TenmP.S.I.G.mormless-a
Lessmthanm2-P.S.I-b
N:mAmjourneymanmplumbermisminstallingmcategory-
Imgasmappliancesmandmequipmentminmthembasementmofmambuilding.mAm120,000mBTU/hr.mboilermandm
, 40,000mBTU/hr.mwatermheatermarembeingminstalled.mQUESTION:mWhatmanswermbelowmshallmbemcon
sideredmmostmcorrectmtomcompletemthemfollowingm"Gasmcodemknowledge"mrelatedmstatement:mTh
emboilermrequiresmamminimummofm_____-cu.mft.mofmairmtomsupportmpropermcombustion
A)m2,400mcu.mft.mB)m120msq.min.mC)m3,200msq.mft.mD)m800mcu.mft.m-
mCORRECTmANSWERm2,400mcu.mft.m120,000/50
)mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollowing
m"Gasmcodemknowledge"mrelatedmstatement:mThemcodemwouldmrequiremthemgasmventmpenetratingm
themroofmin-[FIGURE-TP-B-Q1-1A:mGASmVENTmSIZING]masmidentifiedmatmpoint-
[A]mtombemnotmlessmthanm______mabovemanymportionmofmambuildingmwithinm10-feetmhorizontally.
A)m24"mB)m3-feetmC)m30-inchesmD)mForty-two-inchesm-mCORRECTmANSWERm24
InmMassachusettsmcoppermtubingmandmfittingsmmaymbemusedmformnaturalmgasmpiping
A)mProvidedmthatmthemtubingmismtype-
kmwithmflaredmfittingmconnections.mB)mWhenmapprovedmbymthemauthoritymhavingmjurisdiction.
C)mAtminteriormlocationsmonlymandmnotmconcealed.m
D)mIfmthemgasmcontainsmnommoremthanm.03mgrainsmofmhydrogenmsulfidemperm100mcu.mft.mofmgas.m-
mCORRECTmANSWERmIfmthemgasmcontainsmnommoremthanm.03mgrainsmofmhydrogenmsulfidemperm100m
cu.mft.mofmgas
:mAmjourneymanmplumbermandmapprentice,mwhomarememployedmbymammastermplumber,mareminstalli
ngmamnaturalmgasmfiredmcategory-
1mboilermandmwatermheatermtomanminterior,mclaymtilemlined,mmasonrymchimney.mWhenmmeasuredmin
mcompliancemwithmthemcodemthemchimneym"height"mism48-
feet.mQUESTION:mWhatmanswermbelowmshallmbemconsideredmmostmcorrectmtomcompletemthemfollo
wingm"Gasmcodemknowledge"mrelatedmstatement:m_____mismthemmaximummallowablemamountmofm
6-
