GENERAL EXAMINATION FOR
PLUMBING #1 EXAM 2025/2026 | ALL
CHAPTERS COVERED| STUDY GUIDE
EXAM WITH 130 ACCURATE
QUESTIONS AND DETAILED VERIFIED
ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A+
1. Buildingmsewersmshallmbemtestedmbymcompletelymfillingmthemsewermwithmwatermfrommthem_
_____m-mCORRECTmANSWERmLowestmtomthemhighestmpoint
2. Exceptmformplasticmpipingmsystems,mHOTmANDmCOLDmwatermpipingmmaymbemtestedmwithm__
_m -
mCORRECTmANSWERm50mpsimairmormthemworkingmpressuremofmthemwaterminmthemsystemsmfo
rmatmleastm15mminutes
3. Themrequiredmclearanceminmfrontmofmam2-inchmcleanoutmism_______minches.m-
mCORRECTmANSWERm18minches
4. Amstack,masmdefinedminmthemcode,mis....m-
mCORRECTmANSWERmThemverticalmmainmofmsoil,mwaste,mormventmpipingmthatmextendsmonem
ormmoremstories
5. Undermnomcircumstancesmmaymgasmappliancempressuremregulatorsmbemventedm....m-
mCORRECTmANSWERm...tomthemgasmutilizationmequipmentmfluemormexhaustmsystem.
6. "Abovegroundmschedulem40mPVCmandmABSmDWVmplasticmpipingminstalledmhorizontallymshal
lmbemsupportedmatmintervalsmofmnotmtomexceed_______mfeet.m-mCORRECTmANSWERm4mfeet
, 7. Whenmsizingmamcoppermfuel-
gasmpipingmsystemmthatmhasmanminletmpressuremofmlessmthanm2mpsimwithmampressuremdropmo
fm0.3minchmw.c,mthemmaximummcubicmfeetmpermhourmofmgasmflowmallowedmthroughmam5/8min
chmOD.mACRmtubem75mfeetminmdevelopedmlengthmism___m-mCORRECTmANSWERm27
8. AmTypemB-
Wmgasmventmshallmterminatematmleastm___mfeetminmverticalmheightmabovemthembottommofmth
emwallmfurnace.m-mCORRECTmANSWERm12mfeet
9. Themmaximummhorizontalmdistancemofmamtrapmarmmismmeasuredmfrommtheminnermedgemofmt
hemventmtomthe.....m-mCORRECTmANSWERmweirmofmthemtrap
10. Themmaximummnumbermofmlavatoriesmonmam2minchmhorizontalmwastemlinemis....m-
mCORRECTmANSWERm8
11. Sleevesmshallmbemprovidedmtomprotectmpipingm____mandm_______mwalls.m-
mCORRECTmANSWERmmasonrym&mconcretemwalls.
12. PEXmpipingmoneminchmandmsmallerminstalledmhorizontallymshallmbemsupportedmatmintervalsm
NOTmexceedingmhowmmanyminches?m-mCORRECTmANSWERm32minches
13. Themminimummcommonmhorizontalmwastempipemservingmambathtub,mamlavatory,mandmamkitc
henmsinkmshallmbemATmLEASTmhowmmanyminches?m-mCORRECTmANSWERm2minches
14. Themrequiredmclearanceminmfrontmofmam3minchmCLEANOUTmismhowmmanyminches?m-
mCORRECTmANSWERm24minches
15. Amrefrigeratormusedmtomstoremfoodmandmthatmrequiresmdrainagemshallmbemdrainedmbymmean
smof......m-mCORRECTmANSWERmindirectmwastempipe
PLUMBING #1 EXAM 2025/2026 | ALL
CHAPTERS COVERED| STUDY GUIDE
EXAM WITH 130 ACCURATE
QUESTIONS AND DETAILED VERIFIED
ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A+
1. Buildingmsewersmshallmbemtestedmbymcompletelymfillingmthemsewermwithmwatermfrommthem_
_____m-mCORRECTmANSWERmLowestmtomthemhighestmpoint
2. Exceptmformplasticmpipingmsystems,mHOTmANDmCOLDmwatermpipingmmaymbemtestedmwithm__
_m -
mCORRECTmANSWERm50mpsimairmormthemworkingmpressuremofmthemwaterminmthemsystemsmfo
rmatmleastm15mminutes
3. Themrequiredmclearanceminmfrontmofmam2-inchmcleanoutmism_______minches.m-
mCORRECTmANSWERm18minches
4. Amstack,masmdefinedminmthemcode,mis....m-
mCORRECTmANSWERmThemverticalmmainmofmsoil,mwaste,mormventmpipingmthatmextendsmonem
ormmoremstories
5. Undermnomcircumstancesmmaymgasmappliancempressuremregulatorsmbemventedm....m-
mCORRECTmANSWERm...tomthemgasmutilizationmequipmentmfluemormexhaustmsystem.
6. "Abovegroundmschedulem40mPVCmandmABSmDWVmplasticmpipingminstalledmhorizontallymshal
lmbemsupportedmatmintervalsmofmnotmtomexceed_______mfeet.m-mCORRECTmANSWERm4mfeet
, 7. Whenmsizingmamcoppermfuel-
gasmpipingmsystemmthatmhasmanminletmpressuremofmlessmthanm2mpsimwithmampressuremdropmo
fm0.3minchmw.c,mthemmaximummcubicmfeetmpermhourmofmgasmflowmallowedmthroughmam5/8min
chmOD.mACRmtubem75mfeetminmdevelopedmlengthmism___m-mCORRECTmANSWERm27
8. AmTypemB-
Wmgasmventmshallmterminatematmleastm___mfeetminmverticalmheightmabovemthembottommofmth
emwallmfurnace.m-mCORRECTmANSWERm12mfeet
9. Themmaximummhorizontalmdistancemofmamtrapmarmmismmeasuredmfrommtheminnermedgemofmt
hemventmtomthe.....m-mCORRECTmANSWERmweirmofmthemtrap
10. Themmaximummnumbermofmlavatoriesmonmam2minchmhorizontalmwastemlinemis....m-
mCORRECTmANSWERm8
11. Sleevesmshallmbemprovidedmtomprotectmpipingm____mandm_______mwalls.m-
mCORRECTmANSWERmmasonrym&mconcretemwalls.
12. PEXmpipingmoneminchmandmsmallerminstalledmhorizontallymshallmbemsupportedmatmintervalsm
NOTmexceedingmhowmmanyminches?m-mCORRECTmANSWERm32minches
13. Themminimummcommonmhorizontalmwastempipemservingmambathtub,mamlavatory,mandmamkitc
henmsinkmshallmbemATmLEASTmhowmmanyminches?m-mCORRECTmANSWERm2minches
14. Themrequiredmclearanceminmfrontmofmam3minchmCLEANOUTmismhowmmanyminches?m-
mCORRECTmANSWERm24minches
15. Amrefrigeratormusedmtomstoremfoodmandmthatmrequiresmdrainagemshallmbemdrainedmbymmean
smof......m-mCORRECTmANSWERmindirectmwastempipe