JOURNEYMAN'S EXAM QUESTIONS
AND ANSWERS
1/4" r- r✔✔Threads rof rdrainage rfittings rshall rbe rtapped ras rto rallow r_____ rpitch rper
rfoot
4 rlbs r- r✔✔Lead rused rfor rsafe rpans rshall rnot rbe rless rthan r________ rper rsquare rfoot
Copper rTube, rCast rIron, rStainless rsteel, rABS, rPVC rDWV r- r✔✔Name r3 rallowable
rmaterials rfor rthe rDWV rsystem r"underground"
1-1/4" r- r1 rdfu's
1-1/2" r- r3 rdfu's
2" r- r4 rdfu's
3" r6 rdfu's
4" r- rdfu's r- r✔✔What rare rthe rfixture runit rvalues rfor rthe rfollowing rtraps
Double rfixture rfitting r- r✔✔What rtype rof rfitting ris rused rfor rcontinuous rwaste rand
rventing rof rlavatories rback rto rback?
1" r- r✔✔Caulk rjoints rfor rcast riron rbell rand rspigot rshall rbe rfilled rwith rmolten rlead rto ra
rdepth rof rnot rless rthan r________?
Wye, rCombination rWye rw/ r1/8 rbend, rLong rsweep r- r✔✔What rtype rof rfitting ror rfittings
rcan rbe rused rto rconnect rhorizontal rdrainage rto ranother rhorizontal rdrainage rline?
- rEach rhorizontal rdrainage rpipe rshall rbe rprovided rwith ra rcleat rat rits rupper rterminal
- rHorizontal rrun rmore rthan r100'
- rEach rhorizontal rchange rof rdirection rexceeding r135°
- rFront rMain rCleanout r- r✔✔Cleanout rlocations rrequired rby rcode
100' r- r✔✔Maximum rdistance ra rcleanup rcan rbe rspaced rapart
12"
18" r- r✔✔Minimum rclearance rin rfront rof ra rcleanup rfor r2" ror rless
Minimum rclearance rin rfront rof ra rcleanup rfor r2" ror rmore
20' r- r✔✔Underfloor rcleanup rshall rnot rbe rlocated rmore rthan r_____ rfrom ran raccess
rdoor, rtrap rdoor, ror rcrawl rhole
,Back rWater rValve r- r✔✔When rplumbing rfixtures rare rinstalled ron ra rfloor rlevel rlower
rthan rthe rnext rupstream rmanhole rcover rof rthe rsewer, rsuch rdrainage rpiping rshall rbe
rprotected rfrom rbackflow rof rsewage rby ra r____________
20 r- r✔✔Sewage rejectors rreceiving rthe rdischarge rof rwater rclosets ror rruinals rshall
rhave ra rdischarge rcapacity rnot rless rthan r___ rgallons rper rminute
2" r- r✔✔What ris rthe rminimum rsize rdischarge rpipe rfor ran rejector rinstalled rin ra rsingle
rdwelling?
2" r- r✔✔The rlowest rinlet rconnected rto rthe rejector rpump rshall rhave ra rclearance rof
rnot rless rthan r____ rfrom rthe rhigh rwater ror rstarting rlevel rof rthe rsump.
Yes, rwith rprior rapproval rof rthe rAHJ r- r✔✔Can rmacerating rtoilet rsystems rbe rinstalled
rinstead rof ra rsewage rpump rsystem
3/4" r- r✔✔What ris rthe rminimum rsize rdischarge rpipe rfor ra rmacerating rtoilet rsystem
1/4" rper rfoot r- r✔✔What ris rthe rminimum rpitch rrequired rfora r2" rhorizontal rdrain?
Swing rcheck rvalve r- r✔✔The rdischarge rline rfrom ran rejector rpump rshall rbe rprovided
rwith ran raccessible r___________ rand rgate ror rball rvalve.
Downstream rof rthe rbackwater rvalve r- r✔✔Where rshall rthe rgate rvalve rbe rlocated ron
rthe rdischarge rline ron ran rejector rpump
8' r- r✔✔Drainage rconnections rshall rnot rbe rmade rinto ra rdrainage rpiping rsystem rwithin
r________ rof ran rvertical ror rhorizontal rchange rin rdirection rof ra rstack rcontaining rsuds
rproducing rfixtures.
10' rHead rof rwater rfor r15 rminutes r
5 rpsi rfor rand rair rtest r- r✔✔What rare rthe rrequirements rwhen rtesting rthe rDWV rsystem
rWater rand rAir?
When rthe rdwelling ris rmore rthan r200' raway rfrom rthe rsewer. r- r✔✔When ris rthe rpublic
rsewer rconsidered rnot rbeing ravailable?
2' raway rfrom rthe rbuilding r- r✔✔At rwhat rpoint rdoes rthe rbuilding rsewer rbegin?
DFU's r- r✔✔How ris rthe rsize rof rthe rbuilding rsewer rdetermined?
300' r- r✔✔What ris rthe rmaximum rdistance rallowed rbetween rapproved rmanholes?
12" r- r✔✔When ra rwater rpipe rand rsewer rpipe rare rplaced rin ra rcommon rtrench rwhat ris
rthe rminimum rdistance rabove rthe rtop rof rthe rsewer rline rto rthe rbottom rof rthe rwater
rpipe?
, 12" r- r✔✔When ra rwater rpipe rand rsewer rpipe rare rplaced rin ra rcommon rtrench rwhat ris
rthe rminimum rclear rhorizontal rdistance rthe rwater rpipe rshall rbe rfrom rthe rsewer rpipe?
By rtaking r80% rof rthe rtotal rDFU's r= r173 rDFU's r- r✔✔A r4' rdrainage rline rhas rto rbe rrun
rat ra rpitch rof r1/8" rper rfoot. rHow ris rthe rmaximum rfixture runit rlow rnow rdetermined?
Provide rminimum rrequirements rand rstandards rfor rthe rprotection rof rthe rpublic rhealth,
rsafety, rand rwelfare. r- r✔✔Purpose rof rplumbing rcode.
Capped r- r✔✔Openings rinto rdrainage ror rvent rsystem rexcepting rthose ropening rto
rwhich rplumbing rfixtures rare rproperly rconnected ror rwhich rconstitute rvent rterminals
rshall rbe rpermanently rplugged ror r_________ rin ran rapproved rmanner.
Owner ror rowners ragent r- r✔✔Who ris rresponsible rfor rmaintaining rthe rplumbing rand
rdrainage rsystem rin ra rbuilding?
Work ror rsystems rthat rhave ralready rbeen rinstalled rprior rto rthe reffective rdate rof rthe
rexisting rcode. r- r✔✔What ris rmeant rby rthe rterm r"existing rwork"?
Blockages ror rleaks r- r✔✔What rtype rof rwork ris rexempt rfrom ra rplumbing rpermit?
180 rDays r- r✔✔If rwork ris rnot rstarted, rhow rmany rdays ris ra rpermit rvalid?
After rit rhas rbeen rtested, rinspected, rand rapproved r- r✔✔When rcan rplumbing rwork rbe
rcovered rand rconcealed?
Person rwith rthe rpermit, rdoing rthe rwork r- r✔✔Who rnotifies rthe rauthority rhave
rjurisdiction rwhen rplumbing rwork ris rready rfor rinspections?
Prevent rsiphonage r- r✔✔What ris rthe rpurpose rof ra rvacuum rrelief rvalve
To rslow rcorrosion rof rthe rinside rof rthe rtank r- r✔✔What ris rthe rpurpose rof rthe ranode
rrod?
To rsend rcold rwater rto rthe rbottom rof rthe rtank r- r✔✔What ris rthe rpurpose rof rthe rdip
rtube?
To rprevent rsiphonage rand rback rpressure ron rthe rdip rtube. r- r✔✔What ris rthe rpurpose
rof rthe ranti-siphon rhole?
When rthe rwater rtemperature rdrops rbelow ra rset rtemperature rthe rimmersion relement
rturns ron rto rreheat rthe rwater. r- r✔✔Explain rhow rthe relectric rimmersion relements
rwork ron ran relectric rwater rheater.
AND ANSWERS
1/4" r- r✔✔Threads rof rdrainage rfittings rshall rbe rtapped ras rto rallow r_____ rpitch rper
rfoot
4 rlbs r- r✔✔Lead rused rfor rsafe rpans rshall rnot rbe rless rthan r________ rper rsquare rfoot
Copper rTube, rCast rIron, rStainless rsteel, rABS, rPVC rDWV r- r✔✔Name r3 rallowable
rmaterials rfor rthe rDWV rsystem r"underground"
1-1/4" r- r1 rdfu's
1-1/2" r- r3 rdfu's
2" r- r4 rdfu's
3" r6 rdfu's
4" r- rdfu's r- r✔✔What rare rthe rfixture runit rvalues rfor rthe rfollowing rtraps
Double rfixture rfitting r- r✔✔What rtype rof rfitting ris rused rfor rcontinuous rwaste rand
rventing rof rlavatories rback rto rback?
1" r- r✔✔Caulk rjoints rfor rcast riron rbell rand rspigot rshall rbe rfilled rwith rmolten rlead rto ra
rdepth rof rnot rless rthan r________?
Wye, rCombination rWye rw/ r1/8 rbend, rLong rsweep r- r✔✔What rtype rof rfitting ror rfittings
rcan rbe rused rto rconnect rhorizontal rdrainage rto ranother rhorizontal rdrainage rline?
- rEach rhorizontal rdrainage rpipe rshall rbe rprovided rwith ra rcleat rat rits rupper rterminal
- rHorizontal rrun rmore rthan r100'
- rEach rhorizontal rchange rof rdirection rexceeding r135°
- rFront rMain rCleanout r- r✔✔Cleanout rlocations rrequired rby rcode
100' r- r✔✔Maximum rdistance ra rcleanup rcan rbe rspaced rapart
12"
18" r- r✔✔Minimum rclearance rin rfront rof ra rcleanup rfor r2" ror rless
Minimum rclearance rin rfront rof ra rcleanup rfor r2" ror rmore
20' r- r✔✔Underfloor rcleanup rshall rnot rbe rlocated rmore rthan r_____ rfrom ran raccess
rdoor, rtrap rdoor, ror rcrawl rhole
,Back rWater rValve r- r✔✔When rplumbing rfixtures rare rinstalled ron ra rfloor rlevel rlower
rthan rthe rnext rupstream rmanhole rcover rof rthe rsewer, rsuch rdrainage rpiping rshall rbe
rprotected rfrom rbackflow rof rsewage rby ra r____________
20 r- r✔✔Sewage rejectors rreceiving rthe rdischarge rof rwater rclosets ror rruinals rshall
rhave ra rdischarge rcapacity rnot rless rthan r___ rgallons rper rminute
2" r- r✔✔What ris rthe rminimum rsize rdischarge rpipe rfor ran rejector rinstalled rin ra rsingle
rdwelling?
2" r- r✔✔The rlowest rinlet rconnected rto rthe rejector rpump rshall rhave ra rclearance rof
rnot rless rthan r____ rfrom rthe rhigh rwater ror rstarting rlevel rof rthe rsump.
Yes, rwith rprior rapproval rof rthe rAHJ r- r✔✔Can rmacerating rtoilet rsystems rbe rinstalled
rinstead rof ra rsewage rpump rsystem
3/4" r- r✔✔What ris rthe rminimum rsize rdischarge rpipe rfor ra rmacerating rtoilet rsystem
1/4" rper rfoot r- r✔✔What ris rthe rminimum rpitch rrequired rfora r2" rhorizontal rdrain?
Swing rcheck rvalve r- r✔✔The rdischarge rline rfrom ran rejector rpump rshall rbe rprovided
rwith ran raccessible r___________ rand rgate ror rball rvalve.
Downstream rof rthe rbackwater rvalve r- r✔✔Where rshall rthe rgate rvalve rbe rlocated ron
rthe rdischarge rline ron ran rejector rpump
8' r- r✔✔Drainage rconnections rshall rnot rbe rmade rinto ra rdrainage rpiping rsystem rwithin
r________ rof ran rvertical ror rhorizontal rchange rin rdirection rof ra rstack rcontaining rsuds
rproducing rfixtures.
10' rHead rof rwater rfor r15 rminutes r
5 rpsi rfor rand rair rtest r- r✔✔What rare rthe rrequirements rwhen rtesting rthe rDWV rsystem
rWater rand rAir?
When rthe rdwelling ris rmore rthan r200' raway rfrom rthe rsewer. r- r✔✔When ris rthe rpublic
rsewer rconsidered rnot rbeing ravailable?
2' raway rfrom rthe rbuilding r- r✔✔At rwhat rpoint rdoes rthe rbuilding rsewer rbegin?
DFU's r- r✔✔How ris rthe rsize rof rthe rbuilding rsewer rdetermined?
300' r- r✔✔What ris rthe rmaximum rdistance rallowed rbetween rapproved rmanholes?
12" r- r✔✔When ra rwater rpipe rand rsewer rpipe rare rplaced rin ra rcommon rtrench rwhat ris
rthe rminimum rdistance rabove rthe rtop rof rthe rsewer rline rto rthe rbottom rof rthe rwater
rpipe?
, 12" r- r✔✔When ra rwater rpipe rand rsewer rpipe rare rplaced rin ra rcommon rtrench rwhat ris
rthe rminimum rclear rhorizontal rdistance rthe rwater rpipe rshall rbe rfrom rthe rsewer rpipe?
By rtaking r80% rof rthe rtotal rDFU's r= r173 rDFU's r- r✔✔A r4' rdrainage rline rhas rto rbe rrun
rat ra rpitch rof r1/8" rper rfoot. rHow ris rthe rmaximum rfixture runit rlow rnow rdetermined?
Provide rminimum rrequirements rand rstandards rfor rthe rprotection rof rthe rpublic rhealth,
rsafety, rand rwelfare. r- r✔✔Purpose rof rplumbing rcode.
Capped r- r✔✔Openings rinto rdrainage ror rvent rsystem rexcepting rthose ropening rto
rwhich rplumbing rfixtures rare rproperly rconnected ror rwhich rconstitute rvent rterminals
rshall rbe rpermanently rplugged ror r_________ rin ran rapproved rmanner.
Owner ror rowners ragent r- r✔✔Who ris rresponsible rfor rmaintaining rthe rplumbing rand
rdrainage rsystem rin ra rbuilding?
Work ror rsystems rthat rhave ralready rbeen rinstalled rprior rto rthe reffective rdate rof rthe
rexisting rcode. r- r✔✔What ris rmeant rby rthe rterm r"existing rwork"?
Blockages ror rleaks r- r✔✔What rtype rof rwork ris rexempt rfrom ra rplumbing rpermit?
180 rDays r- r✔✔If rwork ris rnot rstarted, rhow rmany rdays ris ra rpermit rvalid?
After rit rhas rbeen rtested, rinspected, rand rapproved r- r✔✔When rcan rplumbing rwork rbe
rcovered rand rconcealed?
Person rwith rthe rpermit, rdoing rthe rwork r- r✔✔Who rnotifies rthe rauthority rhave
rjurisdiction rwhen rplumbing rwork ris rready rfor rinspections?
Prevent rsiphonage r- r✔✔What ris rthe rpurpose rof ra rvacuum rrelief rvalve
To rslow rcorrosion rof rthe rinside rof rthe rtank r- r✔✔What ris rthe rpurpose rof rthe ranode
rrod?
To rsend rcold rwater rto rthe rbottom rof rthe rtank r- r✔✔What ris rthe rpurpose rof rthe rdip
rtube?
To rprevent rsiphonage rand rback rpressure ron rthe rdip rtube. r- r✔✔What ris rthe rpurpose
rof rthe ranti-siphon rhole?
When rthe rwater rtemperature rdrops rbelow ra rset rtemperature rthe rimmersion relement
rturns ron rto rreheat rthe rwater. r- r✔✔Explain rhow rthe relectric rimmersion relements
rwork ron ran relectric rwater rheater.
