National Plumbing Code of the Phil Summary

NATIONAL PLUMBING CODE OF THE PHILIPPINES ( Republic Act 137 ! "Plu#bi$% L&' ) HISTOR* HISTOR* OF PLUMBING PRACTICE WALLED ALLED CITY CITY (Int (Intra ramur muros) os):: Birth Birth of plumbi plumbing ng prof profess ession ion in the Phili Philippi ppines nes PEBL!: To"ns IL#T$AD!#: Elite %roup %!&' %!&' %E' A$$I#!: A$$I#!: Issue* Issue* a le+er of instru,-on instru,-on on proper proper "aste "aste *isposal .A#T .A#TE$ E$ PL PL.B .BE$ E$ /! /!  0' 0' A##: A##: 0irs 0irstt Chie Chieff of of the the Di1i Di1isi sion on of of Plum Plumbi bing ng Con Const stru ru,,-on on an* an* Inspe,-on A.PAP: a-onal .aster Pl Plumbers Asso,ia-on of of the Ph Philippines First Members: 0ran,is,o %eronimo .ariano *e !,ampo Igmi*io #uare2 Eusebio .ina /ose $i1era $a3mun*o $e3es #r' $oberto 0eli,iano %regorio La2aro $a3mun*o %umapa, /ohn /ones Trinitario !r-2 &alen-n Casupanan Crispin 0ran,is,o Teo*oro Pastor Cornelio !*1ina /esus Tanghal Dera CITY !$DIACE 4566: a.k.a. Plumbing Co*e for the Cit3 of .anila !#E BILL !' 784 0'E'A'T 'E'A'T'I' I&E$# I&E$#ITY ITY:: 0I$# I$#T A.ED.ET: B!.P: AI$? AI$? WA WATE$ TE$ @ 0!!D 0!!D::

$'A' 69;: a.k.a. Plumbing La" of the Philippines 0irst 0irst Curri,ulum Curri,ulum for Plumbing Plumbing Engine Engineering ering In, In,lusion of as an appro1e* Plumbing material Boar* of .aster Plumbers basi basi,, ne,es ne,essi si-e -ess of lif life e

BASIC PRINCIPLES 

Plumbing tures? *e1i,es @ appurtenan,es shall be supplie* "ith "ater in su,ient 1olume an* at pressure a*euate to enable them to fun,-on sa-sfa,toril3 an* "ithout un*ue noise un*er all normal ,on*i-ons of use'

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Plumbing shall be *esigne* an* a*uste* to use the minimum uan-t3 of "ater ,onsistent "ith proper performan,e an* ,leaning'

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Ea,h famil3 *"elling unit on premises abuFng on a se"er or "ith a pri1ate se"er=*isposal s3stem shall ha1e at least one "ater ,loset an* one Git,hen=t3pe sinG' 0urther? a la1ator3 an* bathtub or sho"er shall be installe* to meet the basi, reuirements of sanita-on an* personal h3giene'

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Plumbing tures shall be ma*e of smooth non=absorbent material? free from ,on,eale* fouling surfa,es @ shall be lo,ate* in 1en-late* en,losures'

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All piping piping of plumbing plumbing s3stems s3stems shall shall be of *urable *urable A.PAP=A A.PAP=APP$! PP$!&ED &ED material materials? s? free from *efe,-1 *efe,-1e e "orGm "orGmans anship hip?? *esign *esigne* e* an* ,onstr ,onstru,t u,te* e* b3 $egis $egister tere* e* .aster .aster Plumbe Plumbers rsto to ensur ensure e sa-sfa,tor3 ser1i,e'

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Ea,h ture *ire,tl3 ,onne,te* to the *rainage s3stem shall be euippe* "ith a "ater=seale* trap'

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The *rainage piping s3stem shall be *esigne* to pro1i*e a*euate ,ir,ula-on of air free from siphonage? aspira-on or for,ing of trap seals un*er or*inar3 use'

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Plumbing s3stems shall be sube,te* to su,h tests to eHe,-1el3 *is,lose all leaGs an* *efe,ts in the "orGmanship'

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Proper prote,-on shall be pro1i*e* to pre1ent ,ontamina-on of foo*? "ater? sterile goo*s @ similar materi materials als b3 ba,Go ba,Go" " of se"age se"age'' When ne,essar3 ne,essar3?? the tur ture? e? *e1i,e *e1i,e or applia applian,e n,e shall shall be ,onne,te* in*ire,tl3 "ith the buil*ing *rainage s3stem' s3stem'

Prepared Prepared by: Arch/Enp Emmanuel C, David, RLA,RMP RLA,RMP,, PIEP

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NATIONAL PLUMBING CODE OF THE PHILIPPINES 

o "ater ,loset shall be lo,ate* in a room or ,ompartment? "hi,h is not properl3 lighte* @ 1en-late*'

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If "ater ,losets or other plumbing tures are installe* in the buil*ings "here there is no se"er "ithin a reasonable *istan,e? suitable pro1ision shall be ma*e for *isposing of the buil*ing se"age b3 some a,,epte* metho* of se"age treatment an* *isposal? su,h as sep-, tanG'

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#e"age or other "aste from a plumbing s3stem "hi,h ma3 be *eleterious to surfa,e or sub=surfa,e "aters shall not be *is,harge* into the groun* or into an3 "ater"a3? "ater"a3? unless rst ren*ere* inno,uous through sube,-on to some a,,eptable form of treatment'

CHAP CHAPTE TER R 1+ 1+

ADMI ADMINI NIS STRA TRATION TION

1, APPLI APPLICA CATIO TION N FOR FOR PERMIT PERMITS S  A Re%i-te.e/ &$/ Lice$-e/ M&-te. Plu#be. -0&ll le &$ &pplic&2$ at the o,e of the Buil*ing !,ial in behalf of the buil*ing o"ner: Appli,a-on shall: I*en-f3 @ *es,ribe the plumbing "orG ,o1ere*  a1e the *es,rip-on of the lan* upon "hi,h the plumbing "orG is to be *one  In*i,ate the use or o,,upan,3  Be a,,o a,,omp mpan anie ie* * b3 plan plans? s? *ra" *ra"in ings gs?? *iag *iagra rams ms?? ,omp ,omput utaa-on ons? s? te,hn te,hni, i,al al  spe,i,a-ons? @ other per-nent *ata reuire* b3 A*ministra-1e Authorit3 Be signe* b3 the !"ner or permi+ee  Be signe* @ seale* b3 the $egistere* @ Li,ense* .aster Plumber' Plumber'   Plans @ #pe,i,a-ons: All plumbing plans? *ra"ings? *iagrams? *esign anal3sesJ,omputa-ons as reuire*?  te,hni,al spe,i,a-ons? bill of materials @ other reuire* *o,uments for all t3pes of o,,upan,3 o,,upan,3 shall shall be prepare*? prepare*? signe* @ seale* seale* b3 a Re%i-te.e/ 4 Lice$-e/ M&-te. Plu#be.5 'it0ut li#it&2$ pu.-u&$t t Republic Act 1375 &- &#e$/e/, The abo1e reuirements shall be submi+e* in (6) -et , PERM PERMIT IT ISSU ISSUAN ANCE CE ma3 issue issue P&.2&l Pe.#it for the ,onstru,-on of a part of a  The Administrave Authority ma3 large an*Jor ,ompli,ate* plumbing s3stem before the en-re plans @ spe,i,a-ons for the "hole s3stem submi+e* or appro1e*:  $eten-on of appro1e* plans? spe,i,a-ons? ,omputa-ons @ other per-nent *ata: O$e (1) -et for Administrave Authority   T' () -et- returne* to the Applicant O$e (1) -et Gept at the Jobsite   Epira-on:  O$e (1) 8e&. from *ate of issuan,e Within 19 /&8- if the "orG is suspen*e* or aban*one*  3, APPLICA APPLICATION TION FOR FOR E:ISTIN E:ISTING G PLUMBIN PLUMBING G S*STEM S*STEM  A**i-ons? Altera-ons or $epairs  Changes in Buil*ing !,,upan,3  .aintenan,e  .o1e* Buil*ings ;, INS INSPECT PECTIO ION NS  %eneral: N por-on of an3 plumbing s3stem -0&ll be c$ce&le/ u$2l i$-pecte/ 4 &pp.i$tl8 -i%$e/ b3 !"ner @ the $egistere* an* Li,ense* .aster Plumber=Contra,tor' ?, CONN CONNEC ECTI TION ON APP APPRO RO@ @AL shall be &pp.
Prepared Prepared by: Arch/Enp Emmanuel C, David, RLA,RMP RLA,RMP,, PIEP

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NATIONAL PLUMBING CODE OF THE PHILIPPINES CHAPTER +  

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DEFINITIONS

ABS  A,r3lonitrile=Buta*iene=#t3rene ACCESSIBLE  When applie* to a ture? ,onne,-on? applian,e or euipment? shall mean ha1ing a,,ess thereto? but "hi,h ma3 reuire prior remo1al of an a,,ess panel? *oor or similar obstru,-on' READIL* ACCESSIBLE  shall mean *ire,t a,,ess "ithout ne,essit3 of remo1ing an3 panel? *oor or similar obstru,-on AIRBREA  a ph3si,al separa-on? "hi,h ma3 be a lo" inlet into the in*ire,t "aste re,eptor from the ture? applian,e or *e1i,e in*ire,tl3 ,onne,te*' AIR GAP5 DRAINAGE  the unobstru,te* 1er-,al *istan,e through the free atmosphere bet"een the lo"est opening from an3 pipe? plumbing ture? applian,e or appurtenan,e ,on1e3ing "aste to the oo* le1el rim of the re,eptor' AIR GAP5 ATER DISTRIBUTION  an unobstru,te* 1er-,al *istan,e through the free atmosphere bet"een the lo"est opening from an3 pipe or fau,et ,on1e3ing potable "ater to the oo*=le1el rim of an3 tanG? 1at or ture' APPRO@ED TESTING AGENC*  an organi2a-on primaril3 establishe* for purposes of tes-ng to appro1e stan*ar*s an* appro1e* b3 the A*ministra-1e Authorit3' BACFLO  the o" of "ater or other liui*s? mitures or substan,es into the *istribu-ng pipes of a potable suppl3 of "ater from an3 sour,e other than from its inten*e* sour,e' BACFLO CONNECTION  ,on*i-on or an3 arrangement "hereb3 re1erse o" ,an o,,ur' BACPRESSURE BACFLO o,,urs *ue to an in,rease* re1erse pressure abo1e the suppl3 pressure' This ma3 be *ue to pumps? boilers? gra1it3 or other sour,es of pressure' BACFLO PRE@ENTER  *e1i,e or means to pre1ent o" of liui* from returning to the sour,e of suppl3' Also ,alle* "Vacuum Breaker” BACSIPHONAGE  the o"ing ba,G of use*? ,ontaminate* or pollute* "ater from a plumbing ture or 1essel into a "ater suppl3 pipe *ue to a nega-1e pressure in su,h pipe' BACATER @AL@E  a *e1i,e installe* in the *rainage s3stem to pre1ent re1erse o"' BAC@ENT PIPE  the part of the 1ent line? "hi,h ,onne,ts *ire,tl3 "ith an in*i1i*ual trap un*erneath or behin* the ture an* eten*s to the bran,h or main 1ent pipe at an3 point higher than the ture or ture traps it ser1es' This is some-mes ,alle* an “Individual Vent” BALL COC  a 1al1e opene* @ ,lose* b3 the fall @ rise? respe,-1el3 of an a+a,he* ball oa-ng on the surfa,e of the liui*' BALL OINT  a t3pe of pipe ,onne,-on in "hi,h a ball=shape* en* is hel* in a ,upliGe shell an* allo"s mo1ements in e1er3 *ire,-on' BATTER* OF FI:TURES  an3 of t"o or more similar a*a,ent ture "hi,h *is,harge into a ,ommon hori2ontal soil or "aste bran,h' BELL OR HUB  that por-on of a pipe "hi,h? for a short *istan,e? is su,ientl3 enlarge* to re,ei1e the en* of another pipe of the same *iameter for the purpose of maGing a ,aulGe* or push=on oint' BENDING PIN (. IRON)  a tool for straightening or ben*ing lea* pipe' BIDET  Also ,alle* a “sz” bath' BLAN FLANGE  a pipe ange that is not *rille* for bolt holes' BLIND FLANGE  a ange that ,loses the en* of the pipe' There is no opening for the passage of liui* @ gas' BLOOFF  a ,ontrolle* outlet of a pipeline to *is,harge liui* or *etritus' BOILER BLOOFF  a 1al1e outlet of a boiler that permits *is,harge of a,,umulate* se*iment' BRANCH  an3 part of piping s3stem other than the main? riser or sta,G' BRANCH INTER@AL  a length of soil or "aste sta,G ,orrespon*ing in the general to a store3 height? but in $ c&-e le-- t0&$ ,;3# "ithin "hi,h the hori2ontal bran,hes from one oor or store3 of a buil*ing are ,onne,te* to the sta,G' BRANCH @ENT  a hori2ontal 1ent ,onne,-ng one or more in*i1i*ual 1er-,al ba,G 1ents "ith the 1ent sta,G or sta,G 1ent' BRAED OINT  an3 oint obtaine* b3 oining of metal parts "ith allo3s "hi,h melt at temperatures 0i%0e. t0&$ ; /e%.ee- ce$2%.&/e5 but lo"er than the mel-ng temperature of the parts to be oine*' B4S  Bro"n @ #harpe (#pe,i,a-on) or Bell @ #pigot (En*s of Pipes) BUILDING DRAIN  that part of the lo"est hori2ontal piping of a *rainage s3stem "hi,h re,ei1es the *is,harge from soil? "aste @ other *rainage pipes insi*e the "alls of the buil*ing @ ,on1e3s it to the buil*ing se"er be%i$$i$% 9,6# outsi*e the buil*ing "all'

Prepared by: Arch/Enp Emmanuel C, David, RLA,RMP, PIEP

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NATIONAL PLUMBING CODE OF THE PHILIPPINES

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BUILDING SEER  that part of the hori2ontal piping of a *rainage s3stem "hi,h starts from the en* *rain @ ,on1e3s it to a publi, se"er? pri1ate se"er? in*i1i*ual se"age *isposal s3stem or other point of *isposal' BUILDING SUBDRAIN  that por-on of an un*ergroun* s3stem? "hi,h ,annot *rain b3 gra1it3 into the buil*ing se"er' BUILDING SUPPL*  the pipe ,arr3ing potable "ater from the "ater meter or other sour,e of "ater suppl3 to a buil*ing or other point of use or *istribu-on on the lot' Buil*ing suppl3 shall also mean "ater ser1i,e ,onne,-on' CAULING  plugging an opening "ith oakum, lead or other materials that are poun*e* into the annular spa,e' Also? the material poun*e* into the annular opening' CATCH BASIN  a re,epta,le in "hi,h liui*s are retaine* for a su,ient perio* of -me to allo" se+able material to *eposit' CERTIFIED BACFLO ASSEMBL* TESTER  a person "ho has sho"n ,ompeten,e to test an* maintain ba,Go" assemblies to the sa-sfa,-on of the A*ministra-1e Authorit3 ha1ing uris*i,-on' CESSPOOL  a non="ater-ght line* e,a1a-on in the groun* "hi,h relie1es the *is,harge of a sanitar3 *rainage s3stem or part thereof? *esigne* to retain the organi, ma+er @ soli*s *is,harging therefrom? but permiFng the liui* to seep through the bo+om @ si*es of the ,esspool' CHASE  a 1er-,al shaK for installa-on of *iHerent pipe sta,Gs' CHEC @AL@E  a 1al1e that automa-,all3 ,loses to pre1ent the o" of liui* or gas in a re1erse *ire,-on' CIRCUIT @ENT  a group 1ent pipe "hi,h starts in front of the etreme ture ,onne,-on on a hori2ontal bran,h an* ,onne,ts to the 1ent sta,G' A.k.a. “Loop Vent”. COMMON @ENT  A.k.a. “Loop Vent or Unit Vent”. COMBINATION ASTE 4 @ENT S*STEM  a spe,iall3 *esigne* s3stem of "aste piping embo*3ing the hori2ontal "et 1en-ng of one or more sinG or oor *rains b3 means of a ,ommon hori2ontal "aste @ 1ent pipe? a*euatel3 si2e* to pro1i*e free mo1ement of air abo1e the o" line of the *rain' COMBUSTIBLE CONSTRUCTION  a stru,ture "hi,h an3 part of its stru,tural frame"orG "ill ignite @ burn &t & te#pe.&tu.e  7?6 /e%.ee- ce$2%.&/e . le--, COMMON  that part of plumbing s3stem *esigne* @ installe* to ser1e more than (6) applian,e? ture? buil*ing or s3stem' CONFINED SPACE  a room or spa,e ha1ing & <lu#e le-- t0&$ 1,; # 3 'it0 ?9 =il%.&# c&l.ie of the aggregate input ra-ng of all fuel=burning applian,es installe* in that spa,e' CONTINUOUS @ENT  a ,on-nuous 1ent is 1er-,al 1ent that is a ,on-nua-on of the *rain to "hi,h the 1ent ,onne,ts' CONTINUOUS ASTE  a *rain ,onne,-ng the ,ompartments of a set of tures to trap or ,onne,-ng other permi+e* tures to a ,ommon trap' CONDUCTOR OR DONSPOUT  a 1er-,al pipe to ,on1e3 rain"ater' CORPORATION COC  a stop 1al1e pla,e* at the ,onne,-on of the "ater ser1i,e pipe to the "ater main' CRITICAL LE@EL  C=L or CJL marGing on a ba,Go" pre1en-on *e1i,e or 1a,uum breaGer is a point ,onforming to appro1e* stan*ar*s @ establishe* b3 the tes-ng laborator3 (usuall3 stampe* on the *e1i,e b3 the manufa,turer) "hi,h *etermines the minimum ele1a-on abo1e the oo* le1el rim of the ture or re,epta,le ser1e* "here the *e1i,e ma3 be installe*' When a ba,Go" pre1en-on *e1i,es *oes not bear a ,ri-,al le1el marGing? the bo+om of the 1a,uum breaGer? ,ombina-on 1al1e or the bo+om of an3 su,h appro1e* *e1i,e shall ,ons-tute the ,ri-,al le1el' CROSSCONNECTION  an3 ,onne,-on or arrangement? ph3si,al or other"ise? bet"een a potable "ater suppl3 s3stem an* an3 plumbing ture or an3 tanG? re,epta,le? euipment or *e1i,e? through "hi,h enables non=potable? use*? un,lean? pollute*? ,ontaminate* "ater or other substan,es to enter into an3 part of su,h potable "ater s3stem un*er an3 ,on*i-on' DEADEND  the eten*e* por-on of a pipe that is ,lose* at one en* to "hi,h no ,onne,-ons are ma*e on the eten*e* por-on? thus permiFng the stagna-on of liui* or air therein' DE@ELOPED LENGTH  the length of a pipe along its ,enterline @ Fngs

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 is the “nominal diameter” as *esignate* ,ommer,iall3: I.D. - inside diameter .D. - outside diameter


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DOMESTIC SEAGE the liui* @ "ater=borne "astes *eri1e* from the or*inar3 li1ing pro,esses? free from in*ustrial "astes @ of su,h ,hara,ter that permit sa-sfa,tor3 *isposal "ithout spe,ial treatment' It is *is,harge* into the publi, se"er or into a pri1ate se"age *isposal s3stem' DOUBLEBEND FITTING  a pipe Fng "ith a*a,ent re1erse ben*s an* -0&pe/ li=e lee. "S, DOUBLE OFFSET  t"o oHsets in su,,ession or in series su,h that the ,enterlines of the outsi*e en*s are in the same straight line' DONSPOUT  the 1er-,al por-on of a rain"ater ,on*u,tor DRAIN  a pipe? "hi,h ,arries groun* surfa,e "aters? storm "ater or "aste"ater into a buil*ing *rainage s3stem' DRAINAGE S*STEM  in,lu*es all the pipings "ithin publi, or pri1ate premises "hi,h ,on1e3 se"age or other liui* "astes to a legal point of *isposal but *oes not in,lu*e the mains of a publi, se"er s3stem or a publi, se"age s3stem or *isposal plant' DURHAM S*STEM  a term use* to *es,ribe soil or "aste s3stem "here all pipings are of threa*e* pipe? tubing or other su,h rigi* ,onstru,-on using re,esse* *rainage Fngs to ,orrespon* to the t3pes of piping' EFFECTI@E OPENING  is the minimum ,ross=se,-onal area at the point of "ater suppl3 *is,harge* measure* or epresse* in terms of: (also appli,able to air gap installa-on) Diameter of a circle Diameter of a circle of equivalent cross-seconal area if the openin! is not circular" E:ISTING OR  the on=going installa-on of the plumbing installa-on of the plumbing s3stem or an3 part thereof "hi,h has been installe* prior to the eHe,-1it3 of the a-onal Plumbing Co*e' FERRULE  a metalli, slee1e? ,aulGe* or oine* to an opening in a pipe? into "hi,h a plug is s,re"e* that ,an be remo1e* for ,leaning or eamining the interior of the pipe' FI:TURE  a re,epta,le other than a trap a+a,he* into a plumbing s3stem in "hi,h "ater or "astes ma3 be ,olle,te* or retaine* for ul-mate *is,harge into the plumbing s3stem, FI:TURE BRANCH  the "ater suppl3 pipe bet"een the ture suppl3 pipe @ the "ater=*istribu-ng pipe' FI:TURE DRAIN the *rainpipe from the trap of a ture to the un,-on of that *rain "ith an3 other *rainpipe' FI:TURE SUPPL*  a "ater suppl3 pipe ,onne,-ng the ture "ith the ture bran,h' FI:TURE UNIT  is an arbitrar3 uan-t3 in terms of "hi,h the loa* pro*u,ing eHe,ts of "ater reuirements on the plumbing s3stem of *iHerent Gin*s of plumbing tures are epresse* in some arbitrar3 ,hosen s,ale' ne !"ture unit is equivalent to a rate of #o$ at #$.% liters per minute or &' cu. (. per minute) FLOOD LE@EL  the le1el in a ture at "hi,h "ater begins to o1ero" o1er the top of rim of the ture' FLOOD LE@EL RIM  is the top e*ge of the re,epta,le from "here "ater o1ero"s' FLOODED  a ture is oo*e* "hen the liui* therein rises to the oo* le1el rim' FLUSH TAN  a tanG lo,ate* abo1e or integral "ith "ater ,loset? urinal or similar tures for ushing or remo1ing e,rements in the ture' FLUSH @AL@E  is a *e1i,e lo,ate* at the bo+om of the tanG for the purpose of ushing "ater ,loset or similar tures' = is integrate* "ithin a n air a,,umulator 1essel "hi,h is *esigne* to FLUSHOMETER TAN *is,harge a pre*etermine* uan-t3 of "ater into tures for ushing purposes' FLUSHOMETER @AL@E  is a *e1i,e? "hi,h *is,harges a pre*etermine* uan-t3 of "ater into tures for ushing purposes @ is a,tuate* b3 *ire,t "ater pressure' GATE @AL@E  a 1al1e in "hi,h the o" of "ater is ,ut oH b3 means of a ,ir,ular *is, +e* against a ma,hine=smoothe* fa,es? at right angles to the *ire,-on of o"' The *isG is raise* or lo"ere* b3 means of a threa*e* stem ,onne,te* to the han*le of the 1al1e' The opening in the 1al1e is usuall3 as large as the full bore of the pipe' GLOBE @AL@E  a 1al1e in "hi,h the o" of ui* is ,ut oH b3 means of a ,ir,ular *is, that ts o1er @ against the hori2ontal 1al1e seat' The mo1ement of the plane of the *is, is parallel to the normal *ire,-on of o" of "ater through the ori,e (hole) resul-ng to tortuous passage "hi,h oHers a high=pressure loss' (to t hro+le "ater pressure) GOOSENEC  a return ben* of a small si2e* pipe? $e e$/  '0ic0 i- &but 39c# l$% 4 t0e t0e. e$/ i- &but 7,?c# l$%, It is ,ommonl3 use* as a fau,et for a pantr3 sinG' Also? the term means the eJible tubi$% c$$ec2$ bet'ee$ t0e -e.
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GREASE INTERCEPTOR an inter,eptor of at least 9 ,ubi, meters ,apa,it3 to ser1e one or more tures "hi,h is remotel3 lo,ate*' GREASE TRAP  a *e1i,e *esigne* to retain grease from 6 to a #&Ji#u#  ; Jtu.e- ' GROUP @ENT  a bran,h 1ent that performs its fun,-ons for 4 or more traps HORIONTAL BRANCH  is a *rain pipe eten*ing laterall3 from a soil or "aste sta,G or buil*ing *rain "ith or "ithout 1er-,al se,-ons or bran,hes? "hi,h re,ei1es the *is,harge from one or more ture *rains an* ,on*u,ts it to the soil or "aste sta,G or to the buil*ing *rain' HORIONTAL PIPE  is an3 pipe or Fng installe* in a hori2ontal posi-on or "hi,h forms an angle of $t #.e t0&$ .t8
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= that part of the hori2ontal piping of sanitar3 *rainage s3stem MOBILE HOME PAR SEER "hi,h #e&-u.e- 9,6 #ete. /'$-t.e&# .# t0e l&-t #bile 0#e -ite an* ,on1e3s se"age to a publi, se"er? pri1ate se"er? in*i1i*ual se"age *isposal s3stem or other points of *isposal' = an3 "orG regulate* b3 the that is *angerous to human life or NUISANCE *etrimental to health @ propert3 = hemp or ol* hemp rope soaGe* in oil or tar to maGe it "aterproof' OAUM = in a line of piping is a ,ombina-on of elbo"s or ben*s? "hi,h brings OFFSET one se,-on of the pipe out of the line but into a line parallel "ith the original se,-on' = tube ma*e of plas-, material ,olore* bla,G' The ,ross=se,-onal shape PB (POL*BUTELENE) is normall3 o1al an* is *enote* b3 its outsi*e *iameter (!' D')' ormall3 use* as "ater ser1i,e ,onne,-on from main to meter' PE (POL*ETH*LENE) = tube ma*e of plas-, material ,olore* bla,G' The ,ross=se,-onal shape is ,ir,ular an* is *enote* b3 its outsi*e *iameter (!' D')' PIPE  a ,3lin*ri,al ,on*uit or ,on*u,tor ,onforming to the par-,ular *imensions ,ommonl3 Gno"n as @ its *enote* b3 its interior *iameter (I' D')' PLUMBING  the art @ te,hniue of installing pipes? tures @ other apparatuses in buil*ings for bringing the suppl3? liui*s? substan,es @Jor ingre*ients @ remo1ing them @ su,h "ater? liui* @ other ,arrie*="astes ha2ar*ous to health? sanita-on? life? propert3 also the pipes an* tures aKer installa-on i'e'? the plumbing s3stem' PLUMBING APPLIANCE  an3 one of a spe,ial ,lass of *e1i,e or euipment inten*e* to perform a spe,ial plumbing fun,-on' #u,h *e1i,e or euipment ma3 operate automa-,all3 or ma3 be manuall3 a*uste* or ,ontrolle* b3 the user or operator' PLUMBING APPURTENANCE  a manufa,ture* *e1i,e or a prefabri,ate* assembl3 or an on= the=ob assembl3 of ,omponent parts? an* ser1es as a*un,t to the basi, piping s3stem @ plumbing tures' An appurtenan,e *eman*s no a**i-onal "ater suppl3 nor *oes it a** an3 *is,harge loa* to a ture or the *rainage s3stem' It performs some useful fun,-ons in the opera-on? maintenan,e? ser1i,ing? e,onom3 or safet3 of the plumbing s3stem' PLUMBING FI:TURES  are appro1e*=t3pe installe* re,epta,les? *e1i,es or applian,es supplie* "ith "ater or re,ei1e liui* or liui*=borne "astes an* *is,harge su,h "astes into the *rainage s3stem to "hi,h the3 ma3 be *ire,tl3 or in*ire,tl3 ,onne,te*' In*ustrial or ,ommer,ial tanGs? 1ats @ similar pro,essing euipment are not plumbing tures? but ma3 be ,onne,te* to or *is,harge* into appro1e* traps or plumbing tures' PLUMBING S*STEM in,lu*es all potable "ater suppl3 @ *istribu-on pipes? all plumbing tures @ traps all sanitar3 @ storm *rainage s3stems 1ent pipes? roof *rains? lea*ers @ *o"nspouts @ all buil*ing *rains @ se"ers? in,lu*ing their respe,-1e oints @ ,onne,-ons *e1i,es? re,epta,les? tap? hot @ ,hille* "ater pipings potable "ater trea-ng or using euipment fuel gas piping "ater heaters @ 1ents for same' PLUMBING UNIT  a minimum stan*ar* uan-t3 of plumbing tures that *is,harge "astes into a plumbing installa-on in,lu*ing: ' ater meter ' ater closet ' lavator/ ' soer ead 0 drain 1or a *attu* or soer stall ' kitcen sink ' laundr/ tra/ % 2oor drains 3 1aucets4ose *i** PRESSURE  the normal for,e eerte* b3 a homogeneous liui* or gas? per unit of area on the "all of the ,ontainer 5tac 6ressure - the pressure e&isn! $ithout any #o$ of moon 7esidual 6ressure - the pressure available at the '&ture or $ater outlet( allo$ance is made for pressure drop due to fricon loss) head) meter * other losses in the system durin! ma&imum demand period. PRIMAR* BRANCH  of the buil*ing *rain is the single sloping *rain from the base of a sta,G to its un,-on "ith the main buil*ing *rain' PRI@ATE SEAGE DISPOSAL S*STEM  a sep-, tanG "ith the eMuent *is,harging into a subsurfa,e *isposal el* ?into one or more seepage pits or into a ,ombina-on of subsurfa,e *isposal el* @ seepage pit or of su,h other fa,ili-es as ma3 be permi+e* un*er the pro,e*ures set forth else"here in the Plumbing Co*e'        

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PRI@ATE SEER  a buil*ing se"er? "hi,h re,ei1es the *is,harge from more than one buil*ing *rain @ ,on1e3s it to the publi, se"er? pri1ate se"age *isposal s3stem? or other points of *isposal' PRI@*  an outhouse or stru,ture use* for the *eposi-on of e,rement' PRI@* @AULT  a pit beneath a pri13 "here e,rement ,olle,ts' PUBLIC SEER  a ,ommon se"er *ire,tl3 ,ontrolle* b3 publi, authorit3 to "hi,h all abu+ers ha1e eual rights of ,onne,-ons' P@C (POL*@IN*L CHLORIDE) +otable $ater pipin!s - color-coded BLU8 Drainpipes - color-coded 97A:, 7A;98 or B7<; UALIT* OF MATERIALS  all plumbing tures an* materials use* in an3 *is,harge or plumbing s3stem or parts thereof shall be free from *efe,ts' RECEPTOR  an appro1e* plumbing ture *e1i,e of su,h materials? shape @ ,apa,it3 to a*euatel3 re,ei1e the *is,harge from in*ire,t "aste pipes? ,onstru,te* @ lo,ate* to be rea*il3 ,leane*' REGULATING EUIPMENT  in,lu*e all 1al1es an* ,ontrols use* in plumbing s3stems "hi,h are a,,essible' RELIEF @ENT  a 1er-,al 1ent line? the primar3 fun,-on of "hi,h is to pro1i*e a**i-onal ,ir,ula-on of air bet"een the *rainage @ 1ent s3stems or to a,t as an auiliar3 1ent on a spe,iall3 *esigne* s3stem su,h as a "8=e
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8


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SLIP OINT  an a*ustable tubing ,onne,-on? ,onsis-ng of a ,ompression nut? a fri,-on ring? @ a ,ompression "asher? *esigne* to t a threa*e* a*apter Fng or a stan*ar* taper pipe threa*' SOIL STAC PIPE  a 1er-,al soil pipe ,on1e3ing fe,al ma+er @ "aste"ater' SOIL PIPE  an3 pipe? "hi,h ,on1e3s the *is,harge "ater from "ater ,loset? urinal or tures ha1ing similar fun,-ons? "ith or "ithout the *is,harges from other tures to the buil*ing *rain or buil*ing se"er' SOLDERED OINT  a pipe oint obtaine* b3 oining metal parts "ith metalli, tures or allo3s "hi,h melt a temperature bel' ;7 /e%.ee- ce$2%.&/e 4 &b @ *enote* b3 its outsi*e *iameter (!'D')' UNCONFINED SPACE  a room spa,e ha1ing a 1olume eual to at least 1,; #3 of the aggregate input ra-ng of the fuel=burning applian,e installe* in that spa,e' $ooms a*a,ent an* open to the spa,e "here the applian,e is installe*? through openings not furnishe* "ith *oors? are ,onsi*ere* a part of the un,onne* spa,e' UNIT @ENT  an arrangement of 1en-ng so installe* that one 1ent pipe "ill ser1e (4) traps' @ACUUM  air pressure less than atmospheri,' Also? implies siphonage? in piping s3stem' @ACUMM PRE@ENTER  see Ba,Go" Pre1enter' @ENT PIPE  a pipe or opening use* for ensuring the ,ir,ula-on of air in a plumbing s3stem @ for lea1ing the nega-1e pressure eerte* on the trap seals' @ENT STAC  the 1er-,al 1ent pipe installe* primaril3 for pro1i*ing ,ir,ula-on of air to @ from an3 part of the soil? "aste of the *rainage s3stem'  

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9


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@ENT S*STEM  pipes installe* to pro1i*e o" of air to or from a *rainage s3stem or to pro1i*e a ,ir,ula-on of air "ithin su,h s3stem to prote,t trap seals from siphonage @ ba,G pressure' @ERTICAL PIPE  an3 pipe or Fng installe* in a 1er-,al posi-on or "hi,h forms an angle of not more than fort3=1e (5N) *egrees "ith the 1er-,al line' ASTE PIPE  a pipe? "hi,h ,on1e3s onl3 "aste"ater or liui* "aste of fe,al ma+er' ATER TREATMENT  a *e1i,e "hi,h ,on*i-ons or treats "ater suppl3 to impro1e "ater ualit3? remo1e suspen*e* soli*s b3 ltra-on' ATER  DISTRIBUTING PIPE  a pipe "hi,h ,o1e3s potable "ater from the buil*ing suppl3 pipe to the plumbing tures @ other "ater outlets' ATER MAIN  or street main is the "ater=suppl3 pipe for publi, or ,ommunit3 use' ATER SUPPL* S*STEM  of a buil*ing or premises ,onsists of the "ater ser1i,e pipe? "ater suppl3 line? "ater *istribu-ng pipe an* the ne,essar3 bran,h pipes? Fngs? 1al1es all appurtenan,es reuire* for the suppl3 of potable "ater' ET @ENT  that por-on of a 1ent pipe through "here "aste"ater also o"s through' ELDED OINT OR SEAM  an3 oint or seam obtaine* b3 the oining of metal parts in a plas-, molten state' ELDER5 PIPELINE = a person "ho spe,iali2es in the "el*ing of pipes @ hol*s a 1ali* ,er-,ate of ,ompeten,3 from a re,ogni2e* tes-ng agen,3? base* on the reuirements of the regula-ng authorit3' = a hose ,onne,-on "ith t"o=gate* outlets permiFng t"o ,onne,-ons *E of the same or smaller ,oupling *iameter to be taGen from a single suppl3 line' Also? a pipe Fng of three bran,hes that form the le+er <"3e>' = a pipe ,onne,-ng up"ar* from a soil or "aste sta,G belo" the oor @ belo" *OE @ENT hori2ontal ,onne,-on to an a*a,ent 1ent sta,G at a point abo1e the oor @ higher than the highest spill le1el of tures for pre1en-ng pressure ,hanges in sta,Gs'

CHAPTER 3+

GENERAL REGULATIONS

1, GRADE OF HORIONTAL PIPING  Drainage pipes shall be run in pra,-,al alignments @ at a uniform slope bet"een manholes of $t le-- t0&$ 9### .  to"ar* the point of *isposal' If it is impra,-,able to obtain su,h slope *ue to the follo"ing ,on*i-ons:  E,essi1e *epth of the propose* *rainage line  #tru,tural an*Jor geologi,al features of the terrain  Eis-ng a*1erse in arrangements of buil*ing stru,ture An3 su,h pipe or piping 6O4mm or larger in *iameter ma3 ha1e a slope of 19### . 1 pro1i*e* it is appro1e* b3 A*ministra-1e Authorit3 , CHANGES IN DIRECTION OF DRAINAGE FLO  Changes in *ire,-on of piping shall be ma*e b3 the use of appro1e* pipe Fngs @ shall be the angles presente* b3:  44  *egrees ben*  5N *egrees ben*  8O *egrees ben* or other appro1e* Fngs of longer s"eeps'  ori2ontal *rainage lines ,onne,-ng to a 1er-,al sta,G shall enter through:  5N "3e bran,hes  ,ombina-on "3e @ 6J; ben* bran,hes  or other appro1e* Fngs of longer s"eeps'  ori2ontal *rainage lines ,onne,-ng to other hori2ontal *rainage lines shall enter through:  5N "3e bran,hes  ,ombina-on "3e @ 6J; ben* bran,hes  or other appro1e* Fngs of longer s"eeps'  &er-,al *rainage lines ,onne,-ng to other hori2ontal *rainage line shall enter through:  5N "3e bran,hes  or other appro1e* Fngs of longer s"eeps'  8O *egree bran,hes or oHsets only for pipes installed in true vercal posion" 3, PROHIBITED FITTINGS 4 PRACTICES  N D.&i$&%e Fi$% shall use:  Double hub Fng for leaG=,aulGe* oint in 1er-,al posi-on


10

NATIONAL PLUMBING CODE OF THE PHILIPPINES 

#ingle or *ouble tee bran,h  #ingle or *ouble tappe* tee bran,h  #i*e inlet uarter ben*  $unning threa*? ban* or sa**le EJcept t0&t+ *ouble hub sanitar3 tappe* tee ma3 be use* on 1er-,al lines as a ture ,onne,-on' (appro1e* stainless steel ban*s "ith neoprene gasGets for oin-ng hubless ,ast iron soil pipes are a,,eptable for use)  N D.&i$&%e . @e$t pipi$% shall be *rille* @ tappe* for maGing ,onne,-ons thereto? an* no ,ast iron soil pipe shall be threa*e*'  N &-te C$$ec2$ shall be ma*e to a ,loset ben* or stub of a "ater ,loset or similar tures'  N @e$t pipe -0&ll be u-e/ &- & -il . '&-te pipe @ 1i,e 1ersa ;, PROTECTION OF PIPING5 MATERIALS 4 STRUCTURES  All pipings passing un*er or through "alls shall be prote,te* from breaGage "ith embe**e* metal pipe slee1es'  All pipes passing through or un*er ,in*ers or other ,orrosi1e materials shall be prote,te* from eternal ,orrosion b3 e$c&-i$% -&#e 'it0 pl8et08le$e -0e&t0 or in an3 other appro1e* manner'  &oi* bet"een pipes @ slee1es through ,on,rete oors in the groun* shall be appropriatel3 -e&le/ 'it0 bitu#e$,  The bo+om of all pipe tren,hes *eeper than the foo-ng of an3 a*a,ent buil*ing or stru,ture @ parallel to it must be &t le&-t ;?/e%.ee- therefrom? unless permission is grante* b3 A*ministra-1e Authorit3'  o buil*ing se"er or other *rainage pipings or part thereof? ,onstru,te* of materials other than that appro1e* for use un*er or "ithin the buil*ing? shall be installe* u$/e. . 'it0i$ 9,6#  &$8 buil/i$% . -t.uctu.e5 $. le-- t0&$ 9,3# bel' t0e $i-0 %.u$/ -u.&ce,

?, HANGERS 4 SUPPORTS  &E$TICAL PIPI%: = Bell @ #pigot @ ubless pipe shall be supporte* &t ei$t,  ubless or ,ompression gasGet oints must be supporte* at least e1er3 other oint e,ept that "hen the *e1elope* length bet"een supports e,ee*s 6'4m? the3 shall be pro1i*e* at ea,h oint'  #,re"e* Pipe = IP# shall be supporte* at &pp.Ji#&tel8 3,9# i$te.<&l- for piping 67mm *iameter @ smaller @ 3,6# i$te.<&l- for piping 4Nmm @ larger in *iameter'  Copper Tubing = shall be supporte* at &pp.Ji#&tel8 1,# i$te.<&l- for piping 9;mm *iameter @ smaller @ 3,9# i$te.<&l- for piping N6mm @ larger in *ia' = shall be supporte* at b8 -2Q #et&l . '/e$ b&c=i$% for en-re  Lea* Pipe length 'it0 0&$%e.- p.pe.l8 -p&ce/,


11

NATIONAL PLUMBING CODE OF THE PHILIPPINES 

In %roun* = piping burie* on the groun* -0&ll be l&i/ $ t0e .# be/ . it- e$2.e le$%t0? e,ept "here ,on,rete ,ra*le support is pro1i*e* "hi,h is a*euate @ appro1e* b3 the A*ministra-1e Authorit3' = shall be supporte* b3 -2Q #et&l . '/ b&c=i$% 'it0 0&$%e.- i$ it Plas-, Tube e$2.e le$%t0 for small=si2e tubings up to 9;mm *iameter @ 'it0ut b&c=i$%- but 'it0 -p&ce/ #et&l 0&$%e.- &t &pp.
Tren,hes shall be ba,G=lle* in t0i$ l&8e.-  9,3# abo1e the top of the pipe "ith ,lean earth "hi,h shall not ,ontain stones? boul*ers? ,in*ers or other materials "hi,h ,an *amage or breaG the pipes or ,ause ,orrosi1e a,-on'

CHAPTER ;+

PLUMBING FI:TURES

1, MATERIALS  GENERAL REUIREMENTS  All p.cel&i$ e$&#el -u.&ce- on plumbing tures shall be &ci/ .e-i-t&$t  &te. cl-et bo"ls for public u-e shall be el$%&te/ b'l t8pe- euippe/ 'it0 pe$.$t -e&t-, , MATERIALS  ALTERNATI@ES  $estaurant Git,hen @ other spe,ial=use sinG ma3 be ma*e of appro1e*=t3pe b$/e.iKe/ 4 %&l<&$iKe/ -0eet -teel $t le-- t0&$ G&,16 U,S, B4S . 1,6## t0=, 3, STAINERS 4 CONNECTIONS  St.&i$e.- -e.i$t ,onne,-ons shall be pro1i*e* "ith an a,,ess panel or u-lit3 &t le&-t 9,3# i$ it- le&-t /i#e$-i$ for inspe,-on @ repair'  C$2$uu- '&-te Jtu.e t&ilpiece c$$ec2$- "ere epose* or a,,essible ma3 be of seamless *ra"n brass $t le-- t0&$ G&, 9 B4S . 9,## t0=, 

Con-nuous "aste or "aste @ o1ero" shall not be less than:  3## ut-i/e /i&, (O,D,) .+  sinGs? *ish"ashers? laun*r3 tubs? bathtubs? @ similar tures  urinals (brass @ ,opper=not allo"e*R)  3## ut-i/e /i&, (O,D,) .+  la1atories? *rinGing fountains @ similar small tures ;, SPECIAL FI:TURES 4 SPECIALTIES  Waste"ater *rain for "S&c.&.iu# ,upsinG at ,hur,h altar @ bap-steries font outlet -0&ll /i-c0&.%e /i.ect t t0e %.u$/ @ not ,onne,te* to an3 sanitar3 or *rainage s3stem' ?, INSTALLATION  o "ater ,loset or bi*et shall be set cl-e. t0&$ 9,37?# from its ,enter to an3 si*e of the "all or obstru,-on or cl-e. t0&$ 9,7?# ce$te. t ce$te. to an3 similar ture'  o urinal shall be set cl-e. t0&$ 9,6# ,enter to ,enter' 6, SHOER STALLS  Ea,h sho"er re,eptor shall be a n appro1e* t3pe an* be ,onstru,te* to ha1e a nishe* *am? ,urb? or threshol* "hi,h is at least ?,;## l'e. t0&$ t0e ut-i/e .,  In no ,ase shall an3 *am or threshol* be le-- t0&$ ?1## . #.e t0&$ ## i$ /ept0 "hen measure* from the top of the *am or threshol* of the *rain'  The nishe* oor of the re,eptor shall slope uniforml3 from si*es to"ar*s the *rain $t le-t0&$  . 9### . #.e t0&$ ; . ;9###,  ??## #i$, 'i/t0 of threshol*'  1,# #i$, /i-t&$ce bet"een the *oor or entr3 to the *rain'   9,6# #i$, $i-0e/ i$te.i. &.e& of sho"er stalls (an3 shape) @ shall be c&p&ble  e$c#p&--i$% & 76## /i&, ci.cle,


12

NATIONAL PLUMBING CODE OF THE PHILIPPINES 

The minimum area @ *imensions shall be maintaine* from a point abo1e the sho"er *rain outlet t & 0ei%0t  1,7# 'it0 $ p.t.u-i$- other than the ture 1al1e or 1al1es? sho"er hea* @ safet3 grab bars or rails'  When sho"er re,eptors are built abo1e groun* the sub=oor @ rough si*e of "alls to & 0ei%0t  $ le-- t0&$ 76## abo1e the top of the nishe* *am or threshol*'  o metalli, sho"er sub=pans or linings ma3 be built=up on obsite of $t le-- t0&$ (3) t0.ee l&8e.-  -t&$/&./ %.&/e 6,=% &-p0<i#p.e%$&te/ .$% elt, All fol*s? laps @ reinfor,ing "ebbing shall eten* to &t le&-t 191## in all *ire,-ons pro*u,ing a tensile strength  $t le-- t0&$ 9,=%## in either *ire,-ons'  For public sho$ers : *rains in gu+ers shall $t be spa,e* #.e t0&$ ;,# &p&.t, 9  ;, C #&J, temperature of hot "ater in sho"ers @ shall ha1e:  in*i1i*ual sho"er ,ontrol 1al1es of the pressure balan,e or the thermosta-, miing 1al1e t3pe for individual ater eaters master thermosta-, miing 1al1e t3pe in lieu of in*i1i*uall3 ,ontrolle* pressure balan,e  or the for mulple +an+ soers 7, MINIMUM RATIO  PLUMBING FACILITIES  , laundry tray * , automac $asher standpipe per , d$ellin! unit   laundry trays *  automac $asher standpipes per , apartments  , kitchen sink per , d$ellin! unit or ,apartment  , lavatory per / persons $here there is e&posure to skin contaminaon $ith poisonous) infecous) or irritan! materials"  , laundry tray per / persons  , slop sink per , persons  , $ater closet * , urinal per 0 $orkmen for temporary $orkin!men facilies"  , drinkin! fountain per occupied #oor in schools) theaters) auditoriums) dormitories o1ces or public buildin!  total no. of $ater closets required for females sall *e at least e>ual for the total no. of $ater closets * urinals required for males.  For assembly areas theaters) auditoriums) dormitories) o1ces) of public buildin!s ) used */ more tan ? persons@  , drinkin! fountain 1or te !rst 2/ persons * addional of , drinkin! fountain 1or te ne"t ,/ persons.

CHAPTER ?+

INSPECTION 4 TEST



It is the *ut3 of the $egistere* @ Li,ense* .aster Plumber to no-f3 the A*ministra-1e Authorit3 $t le-- t0&$ 3 /&8- before the "orG is inspe,te*'  %n $ater tesn!) the "ater shall be Gept in the pipe s3stem or in the po-on un*er test for &t le&-t 1? #i$ute- before the inspe,-on starts'  %n air tesn!) aKer ,losing all other inlets @ outlets? air is for,e* in the pipe s3stem (through a ,onne,-on "ith an air ,ompressor)? un-l there is a u$i.# %&u%e p.e--u.e  3;,? p& su,ient to balan,e a ,olumn of mer,ur3 ?;## i$ 0ei%0t . & pe.i/  &t le&-t 1? #i$ute-,  %n $ater pipin!) it shall be teste* @ pro1e* -ght un*er "ater pressure not less than the '.=i$% p.e--u.e '0ic0 i- t be u-e/ plu- ?9 . & pe.i/  &t le&-t 1? #i$ute-, A 3;;,? p& &i. p.e--u.e ma3 be subs-tute* for the "ater test'

CHAPTER 6+

ATER SUPPL* 4 DISTRIBUTION

1, BACFLO PRE@ENTION DE@ICES5 ASSEMBLIES5 4 METHODS AIR GAP



 the minimum air gap to pro1i*e ba,Go" prote,-on'

ITEM NO,

FI:TURES

Nt &Qecte/ b8 -i/e '&ll- (##)

AQecte/ b8 -i/e '&ll- (##)

6

La1atories @ other tures "ith eHe,-1e openings not greater than 69mm in *iameter

4N

9;

9;

N

4

#inGs? laun*r3 tra3s? goosene,Gs bath fau,ets @ other tures "ith eHe,-1e openings not greater


13

NATIONAL PLUMBING CODE OF THE PHILIPPINES than 67mm in *iameter' 9 5

!1er rim bath llers @ other tures "ith eHe,-1e openings not greater than 4Nmm in *iameter' EHe,-1e openings not greater than 4Nmm in *iameter'

N6

8

4 -mes *iameter of eHe,-1e opening

9 -mes *iameter of eHe,-1e opening

EFFECTI@E OPENING  the minimum ,ross se,-onal area at the seat of the ,ontrol 1al1e or the suppl3 pipe or tubing "hi,h fee*s the *e1i,e outlet' If t"o or more lines suppl3 one outlet? the eHe,-1e opening shall be the sum of the ,ross=se,-onal areas of the in*i1i*ual suppl3 lines or the area or the single outlet? "hi,he1er is smaller' ATMOSPHERIC @ACUUM BREAER (A@B)  ,onsist of a bo*3? a ,he,Ging member @ an  atmospheri, opening' DOUBLE CHEC @AL@E BACFLO PRE@ENTION ASSEMBL* (DC)  ,onsists of t"o in*epen*entl3  a,-ng internall3 or eternall3 loa*e* ,he,G 1al1es? four properl3 lo,ate* test ,o,Gs "ith ,onne,tors @ t"o isola-on gate 1al1es' PRESSURE @ACUUM BREAER BACFLO PRE@ENTION ASSEMBL* (P@B)   ,onsists of a loa*e* air inlet 1al1e? an internall3 loa*e* ,he,G 1al1e? t"o properl3 lo,ate* test ,o,Gs @ t"o isola-on gate 1al1es' REDUCED PRESSURE PRINCIPLE BACFLO PRE@ENTION ASSEMBL* (RP)   ,onsists of t"o in*epen*entl3 a,-ng internall3 loa*e* ,he,G 1al1es? a *iHeren-al pressure relief 1al1e? four properl3 lo,ate* test ,o,Gs @ t"o isola-on gate 1al1es' , GENERAL REUIREMENTS  A,,ess @ ,learan,e for tes-ng? maintenan,e @ repair shall reuire 39?## #i$, spa,e bet"een the lo"est por-on of the assembl3 @ the gra*e? oor or plaSorm' Ele1ate* i$-t&ll&2$- #.e t0&$ 1,?# abo1e the oor or gra*e shall be pro1i*e* "ith plaSorm su,ient to support maintenan,e person'  Where potable "ater is *is,harge to the *rainage s3stem? it shall be b3 means of an appro1e* air gap of t' () pipe /i&, #i$, t ?## #&J, from the suppl3 outlet @ the top surfa,e of the *rainage inlet' 3, SPECIFIC REUIREMENTS  Water Closet @ rinal 0lushometer &al1es shall be euippe* 'it0 & li-te/ &t#-p0e.ic <&cuu# b.e&=e. @ shall be installe* at the *is,harge le1el of the ushometer 1al1e "ith a ,ri-,al le1el &t le&-t 1?## /i-t&$ce a,,or*ing to its lis-ng abo1e the o1ero" rim of a "ater ,loset bo"l or highest part of a urinal'  Water Closet @ rinal TanGs shall be euippe* "ith a liste* ball,o,G @ shall be installe* "ith the ,ri-,al le1el &t le&-t ?## &b
;, MATERIALS  3ater pressure pipes shall be of:  F. cl/'&te. /i-t.ibu2$ -8-te#- = Brass? Copper? Centrifugal Cast Iron Pipe (CCI)? B@# @ 0@0 en*s? Du,-le Cast Iron Pipe (DCI)? %al1ani2e* Wrought Iron? %al1ani2e* #teel? or other appro1e* PE @ P&C "ater pressure pipe'  F. 0t 4 cl/'&te. /i-t.ibu2$ -8-te#- = CP&C "ater pipe @ tubing  Cast iron Fngs up t 4 i$clu/i$% ?1## i$ -iKe ? "hen use* in ,onne,-on "ith potable "ater piping -0&ll be %&l<&$iKe/,  All small=si2e* malleable iron "ater Fngs -0&ll be %&l<&$iKe/,  Water pipes @ Fngs "ith a lea* ,ontent t0&t eJcee/  shall be prohibite* @ shall not be use* in potable piping s3stems'


14

NATIONAL PLUMBING CODE OF THE PHILIPPINES ?, @AL@ES 

6,

7,

,

,

19,

&al1es up t 4 i$clu/i$% ?1## -iKe shall be brass or other appro1e* materials' SiKe- 
ITEM NO,

FI:TURES

Nu#be.  &te. Suppl8 FiJtu.e U$it- (SFU) Pri1ate se

Publi, se

6

La"n #prinGlers (stan*ar* t3pe? ea,h hea*)

6

6

4

Bar #inG? DrinGing 0ountain? La1ator3

6

4

9

Bi*et? Bathtub(With or Without #ho"er !1er)? Laun*r3 Tub or Clothes Washer (ea,h pair of fau,ets)? #ho"er (ea,h hea*)? #inG or Dish"asher

4

5

5

Water Closet (e,onomi,al ush)

4'N

5

N

Water Closet (ush tanG @ ushometer=tanG)? ose Bibb or #ill Co,G (stan*ar* t3pe)

9

N

8

.obile ome (ea,h)=temporar3 fa,ili-es

8

8



rinal (ush tanG)

=

9

;

rinal (pe*estal or similar t3pe)

=

6O

7

rinal (stall @ "all)

=

N

11, SUPPORT  #upport all piping at inter1als of $t #.e t0&$ (;,) u. eet . (11##) ? at en* of bran,hes @ ,hange of *ire,-on or e le1a-on'  #upport trap arms i$ eJce--  (3,) t0.ee eet . (1;##) in length as ,lose as possible to the trap'  Closet rings shall be fastene* (1;i$c0) . (6,;##) &b

15

NATIONAL PLUMBING CODE OF THE PHILIPPINES 1, THRUST BLOCING  In lines "ith rubber gasGete* oints? thrust blo,Gs shall be installe* at all:  Changes in *ire,-on? as tees @ ben*s  Changes in si2e? as at re*u,ers  #tops? as at *ea* en*s @  &al1es? "here thrusts ma3 be epe,te*'

CHAPTER 7+

E:CRETA DRAINAGE S*STEM

1, MATERIALS  EJc.et& D.&i$&%e Pipi$%- shall be of ast %ron) Ducle %ron) ;alvani8ed 7teel) ;alvani8ed 3rou!ht %ron)  D3>) 5&tra-stren!th >itri'ed lay +ipe or other appro1e* materials ha1ing smooth @ uniform bore e,ept that:  N ;alvani8ed 3rou!ht %ron or ;alvani8ed 7teel +ipe shall be use* un*ergroun* @ shall be =ept &t le&-t 1?## &bitri'ed lay +ipes or Fi?n!s for buil*ing *rain or se"er shall be use* abo1e groun* or "hene1er piping is pressuri2e* b3 a pump or ee,tor' The3 shall be Gept 9,3# bel' $i-0 %.u$/ le) >itri'ed lay +ipe or other appro1e* materials ha1ing smooth interior "ater"a3 of the same *iameter as the piping ser1e*'  ABS @ P@C D@ piping installa-ons shall be use* in high rise buil*ings , SIE OF DRAINAGE PIPING  .inimum Trap Diameters @ Drainage 0iture nit &alues (some)

FI:TURES

T.&p 4 T.&p A.# SiKe (##)

D.&i$&%e FiJtu.e U$it(DFU)

6

#inGs? bar? ,ommer,ial N6mm min' "aste? $e,eptors (oor sinGs)? in*ire,t "aste re,eptors for refrigerators? ,oHee urns? "ater sta-on? e,t''

9;

6

4

Bi*et? Bathtub? Laun*r3 tubs? Wash basins (in sets)? #inGs or Dish"ashers (resUlJ,omUl) N6mm min' "aste? rinal? "all mounte*? "ashout? separate trap NO';mm min' "aste

9;

4

9

#inGs? ,ommer,ial or in*ustrial? s,hools? et,V? in,lu*ing *ish"ashers? "ash up sinGs? @ "ash fountains NO';mm "aste

9;

9

5

Clothes"ashers? 0loor *rains? #ho"er (single stall)? rinal? stall? separate trap? rinal? "all mounte*? "ash*o"n or siphon et? integral trap? trap arm onl3

N6

4

N

DrinGing 0ountains

96

6

8

.obile home parG traps (one for ea,h trailer)? Water ,loset? publi, installa-on

8

8



Water Closet (pri1ate installa-on)

8

5

;

Water Closet (publi, installa-on)

8

8

ITEM NO,

3, CHANGES IN DIRECTION OF E:CRETA DRAINAGE FLO  Changes in *ire,-on of *rainage piping shall be ma*e b3 appropriate use of appro1e* Fngs @ shall be of the angles presente* b3 a ##  de+rees or '4'? *end, 3de+rees or '4$ *end, and ?Cde+rees or '4? *end or other appro1e* Fngs of eui1alent s"eeps'  &er-,al *rainage lines ,onne,-ng "ith hori2ontal *rainage lines shall enter through 1ort/ !ve &3) de+ree *rances or other appro1e Fngs of eui1alent s"eep' 5i"t/ &?C) de+ree *rances or oHsets ma3 be use* onl3 installe* in a true 1er-,al posi-on' ;, CLEANOUTS  Ea,h hori2ontal *rainage pipe shall be pro1i*e* "ith a ,leanout at its upper terminal @ ea,h rung of piping '0ic0 i- #.e t0&$ 1? #ete.- i$ tt&l /e

16

NATIONAL PLUMBING CODE OF THE PHILIPPINES SIE OF PIPE (##)

SIE OF CLEANOUT (##)

9;

9;

N6

9;

85

85

8

85

6O4 or larger

;7



Cleanouts ma3 be omi+e*:  !n hori2ontal *rain le-- t0&$ 1,? #ete. in length u$le-- su,h line is ser1ing sinG or urinals'  !n short hori2ontal *rainage pipe installe* at a -lpe  -e -0&ll be p.ect.-, The in1ert of the lo"est inlet to the tanG shall ha1e a ?1## #i$, *istan,e abo1e the high "ater or le1el of the pumping opera-on'  &ent of sump @ re,ei1ing tanGs shall eten* separatel3 to the roof ha1ing a ?1## #i$,  Air tanGs for ee,tor shall ha1e an air pressure of 3=% #i$, for ea,h meter of height the se"age is raise*'  0iture outlets shall not be ,onne,te* to the hori2ontal e,reta *rainage piping s3stem 'it0i$ ,;# of an3 1er-,al to hori2ontal ,hange of *ire,-on of a sta,G ,ontaining su*s= pro*u,ing tures' (0itures using soapsJ*etergents)  The *iameter of an in*i1i*ual 1ent shall $t be le-- t0&$ 3## nor less t0&$ 1 t0e /i&#ete. of the *rain to "hi,h it is ,onne,te*'

CHAPTER +

INDIRECT ASTE PIPING5 ET @ENTED S*S*TEMS 4 SPECIAL ASTES

1, INDIRECT ASTE CONDITIONS  The airgap for *rainage shall be $t le-- t0&$ ?## bet"een the plumbing ture? applian,e or appurtenan,e outlet @ the rim of the oor sinG or re,eptor' , INDIRECT ASTE PIPING  In*ire,t "aste pipes le-- t0&$ ;,6# i$ le$%t0 nee* not to be larger in *iameter than the *rain outlet or tailpie,e of the ture or 13## i$ /i&#ete. #i$, 3, INDIRECT ASTE RECEPTORS  o stan*pipe re,eptor for an3 ,lothes"asher shall eten* more than # . le-- t0&$ 9,;?# abo1e its trap'  #-lls? sterili2ers @ simillar euipment shall be /.&i$ t0.u%0 &$ &i.%&p, ;, STEAM 4 HOT ATER DRAINAGE CONDENSERS 4 SUMPS  N steam pipe shall be *ire,tl3 ,onne,te* to an3 part of a plumbing or *rainage s3stem? nor shall an3 "ater ha1ing a te#pe.&tu.e &b

17


?,

6,

7,

,

All ,on*ensers @ sumps shall be properl3 trap "ith a *eep seale* trap eJte$/i$% 'it0i$ 1?## at the bo+om of the tanG'  Traps shall ha1e 1## /i&, pe$i$% to ser1e as siphon breaker.  #umps? ,on*ensers or inter,ep-ng tanGs ,onstru,te* of concrete shall ha1e:  Walls @ bo+om 19## t0ic=$e- Cement plaster not less than 13## t0ic=$e- #umps? ,on*ensers or inter,ep-ng tanGs ,onstru,te* of metal shall be $t le-- t0&$ N,1 U,S, St&$/&./ G&u%e (,77## t0ic=$e--) CHEMICAL ASTES  Where a,i* or ,orrosi1e ,hemi,al is pla,e* @ ea,h 1ent pipe ,onne,te* thereto? shall be ,onstru,te* of chemical-resistant !lass-lined pipe) hi!h silicon iron pipe) lead pipe not less than 0.mm $all thickness) an approved type of ceramic !la8ed or un!la8ed vitri'ed clay or other approved corrosion resistant material. @ERTICAL ET PIPING  Wet 1en-ng is limite* to 1er-,al *rainage piping re,ei1ing the *is,harge from the trap arm of one (6) @ t"o (4) ture unit' 0itures that also ser1es as a 1ent . $t t eJcee/ u. (;) Jtu.e-,  #i2e of "et 1ent shall be:  M&J,  1 pipe -iKe l&.%e. than the reuire* min' "aste pipe si2e of:  the upper ture  the sum of the ture units ser1e* b3 su,h "et=1ente* se,-on  Mi$, ?1## /i&#ete. COMBINATION ASTE 4 @ENT S*STEMS (C 4 @S)  #hall be pe.#ie/ $l8 "here stru,tural ,on*i-ons pre,lu*e the installa-on of ,on1en-onal s3stems  An3 bran,h #.e t0&$ ;,6# i$ le$%t0 shall be separatel3 1ente*  Mi$, &.e& of 1ent -0&ll be 1 t0e i$-i/e c.---ec2$&l &.e& of the *rain pipe ser1e*'  Mi$, /i&, of traps -0&ll be  pipe -iKe- l&.%e. than an3 ture? tailpie,e or ,onne,-on'  In no ,ase an3 tailpie,e or ,onne,-ons -0&ll eJcee/ 9,6# l$%, AIR CONDITIONING EUIPMENT  1,1## #i$, si2e of ,on*ensate "astes pipe  Air=,on*i-oning ,on*ensate "aste pipes shall ,onne,t in*ire,tl3 to the *rainage s3stem through an airgap or airbreaG'

CHAPTER +

@ENTS 4 @ENTING

1, MATERIALS  @e$t Pipe- shall be of ast %ron) Ducle %ron) ;alvani8ed 7teel) ;alvani8ed 3rou!ht %ron) ) 7eries , +> or other appro1e* materials ha1ing smooth @ uniform bore e,ept that:  N ;alvani8ed 3rou!ht %ron or ;alvani8ed 7teel +ipe * Fi?n!s shall be use* un*ergroun* @ shall be =ept &t le&-t 1?## &b) >itri'ed lay +ipe or other appro1e* materials ha1ing smooth interior "ater"a3 of the same *iameter as the piping ser1e*' , SIE OF @ENTS  #hall $t be le-- t0&$ 1 1; (3##) nor le-- t0&$ 1 t0e /i&, of the *rain to "hi,h it is ,onne,te*'  The aggregate ,ross=se,-onal area shall $t be le-- t0&$ t0e l&.%e-t reuire* buil*ing se"er' 3, @ENT TERMINATION  Ea,h vent stack through roof (&#T$) shall:  eten* its ashing all aroun* the sta,G terminate 1er-,all3 $t le-- t0&$ 1?c# abo1e the roof  ha1e a cle&.&$ce  9,3# a"a3 from an3 1er-,al surfa,e nearb3 


18

NATIONAL PLUMBING CODE OF THE PHILIPPINES Ea,h vent openin! shall:  not terminate $t le-- t0&$ 3# from or &t le&-t 9,# abo1e an3 operable "in*o"? *oor opening? air intaGe or 1ent shaK  &t le&-t 9,# #i$, a"a3 from an3 lot line? alle3 @ street boun*ar3 lines' ;, @ENT STACS 4 RELIEF @ENTS  :oke vent in ,onne,-on "ith the 1ent sta,G shall be pla,e* not less than 1,9# &b
CHAPTER 19+ TRAPS 4 INTERCEPTORS 1, TRAPS REUIRED  Nt #.e t0&$ 1 t.&p- shall be permi+e* on a trap arm'  1 t.&p ma3 ser1e:  3 -i$%le c#p&.t#e$t -i$= of the same *epth  3 l&<&t.ie- imme*iatel3 a*a,ent to ea,h other $t #.e t0&$ 9,7?# &p&.t,  In no ,ase an3 tailpie,e or ,onne,-ons -0&ll eJcee/ 9,6# l$%, , TRAP SEALS  Ea,h ture trap shall ha1e a $ater seal of $t le-- t0&$ ?1## @ $t #.e t0&$ 19## *eep' 3, INDUSTRIAL INTERCEPTORS (CLARIFIERS) 4 SEPARATORS  #hall be so *esigne* @ lo,ate* as to be rea*il3 a,,essible for ,leaning @ shall ha1e a "ater seal of $t le-- t0&$ 1?## /eep, ;, GREASE TRAPS  #hall not be installe* for a fa,ilit3 that has an appro1e* rate of o" of %.e&te. t0&$ 3,;L-ec @ l'e. t0&$ 1,3L-,  The total ,apa,it3 of tures *is,harging to an3 grease t.&p -0&ll $t eJcee/  1 2#e- the ,er-e* liters per minute '.&te  %.e&-e t.&p-,  %rease traps ma3 be use* as a ture outlet pro1i*e*:  or' *istan,e bet"een the ture @ the grease trap /e- $t eJcee/ 1,#,  &er-,al tailpipe or *rain /e- $t eJcee/ 9,7?#,  %rease traps shall ha1e an appro1e* "ater seal of ?1## #i$, in *epth or the /i&#ete.  it- utlet, ?, SAND INTERCEPTORS   #hall be ha1e a *imension of 9,# #i$, for the net free opening of the inlet se,-on @ a 619## #i$, /ept0 un*er the in1ert of the outlet pipe'

CHAPTER 11+ STORM DRAINAGE S*STEM 1, RAINATER S*STEMS  R&i$'&te. D'$-put . C$/uct. Pipi$%- pla,e* "ithin the interior si*e of the buil*ing insi*e a 1er-,al pipe ,hase or run "ithin a 1ent shaK shall be of ast %ron) Ducle %ron) ;alvani8ed 7teel) %ron)  D3>) or other appro1e* materials'  R&i$'&te. D'$-put . C$/uct. lo,ate* on the eterior si*e of a lo" height buil*ing shall be $t le-- t0&$ G&, 6 %&l<&$iKe/ -0eet #et&l, , ROOF DRAIN  St.&i$e. #houl* $t eJcee/ 19## abo1e the surfa,e of the roof imme*iatel3 a*a,ent to the *rain  Dome-type strainers shall ha1e &t le&-t 1 1 2#e- the area of the outlet pipe to "hi,h it is ,onne,te*'  oof Deck strainers shall ha1e &t le&-t  2#e- the area of the outlet pipe to "hi,h it is ,onne,te*'  @e.2c&l &ll A.e& 0or 1 '&ll  &// ?9 of area of the "all to the roof area  0or  &/>&ce$t '&ll-  &// 3? of the total "all areas to the roof area  0or  '&ll- pp-ite e&c0 t0e. @ of the same heights  &// NO a**i-onal area


19


&er-,al piping ma3 be roun*? suare or re,tangular pro1i*e* that the area of a re,tangular piping shall ha1e &t le&-t t0e eui<&le$t c.-- -ec2$&l &.e& of a ,ir,ular piping @ its *imensions -0&ll $t eJcee/ 3 t 1,

CHAPTER 1+ HOUSE DRAINS 4 HOUSE SEERS 1, SEER REUIRED  It is ,onsi*ere* that publi, se"er is not a1ailable if it is lo,ate* #.e t0&$ 61# from the propose* buil*ing or eterior *rainage fa,ilit3 or an3 lot or premises thereat'  Buil*ing se"er  be%i$$i$% 9,6# from outsi*e fa,e of the "all' , SIE OF BUILDING SEERS  #i2e of an3 buil*ing se"er shall be *etermine* on the basis of the total number of ture units *raine* b3 su,h se"er? but in $ c&-e si2e of buil*ing se"er -0&ll be le-- t0&$ 1?9##, 3, GRADE5 SUPPORT5 4 PROTECTION OF BUILDING SEER  %ra*e of buil*ing se"ers -0&ll $t be le-- t0&$ , In spe,ial ,ases "here 4 gra*e ,annot be a,hie1e*? it ma3 be re*u,e* but -0&ll $t be le-- t0&$ 1,  Buil*ing se"er shall be installe* $t le-- t0&$ 9,6# from the outer fa,e of the buil*ing? foun*a-on or "all $. le-- t0&$ 9,3# belo" the nish surfa,e of the groun*' ;, CLEANOUTS  A**i-onal buil*ing se"er ,leanouts shall be installe* $t t eJcee/ 1?# ,c, in straight runs @ ea,h aggregate ,hange in *ire,-on eJcee/i$% 13?/e%.ee-,  o ,leanouts "ill be reuire* "hen a buil*ing se"er or a bran,h thereof /e- $t eJcee/ 3# i$ le$%t0,  =anoles ,an be installe* in lieu of ,leanouts @ shall be lo,ate* $t eJcee/i$% 1# i$ bet'ee$ @ outlet pipe ,onne,-ons shall be ma*e b3 the use of eible ,ompression oints $ cl-e. t0&$ 9,3# from outsi*e of the manhole' ?, SEER 4 ATER PIPES  The bo+om of the "ater pipe? at all points? shall be &t le&-t 9,3# &b
CHAPTER 13+ OINTS 4 CONNECTIONS 1, T*PES OF OINT  for bell=@=spigot Cast Iron #oil (CI#P) @ other similar oints shall  C&ul=e/ >i$tbe rml3 pa,Ge* "ith oaGum or hemp @ lle* "ith pig lea* to a *epth of $t le-- t0&$ ?,;##,  for Iron Pipe #i2e (IP#) pipe @ Fngs shall be stan*ar* taper  T0.e&/e/ >i$tpipe threa*s' Bhreaded +lasc +ipe shall be Sc0,9 #i$, "all thi,Gness'  oints in lea* pipe Fngs or bet"een lea* pipe or Fngs @  ipe/ >i$tbrass or ,opper pipe? ferrules? sol*er nipples or traps shall be full="ipe* lea* oints' Wipe* lea* oints shall ha1e an epose* surfa,e on ea,h si*e of a oint $t le-- t0&$ 1## @ &t le&-t &- t0ic= &- the material being oine*'  Sl/e. 4 S'e&t >i$t oints in ,opper tubing shall be ma*e b3 the appropriate use of appro1e* brass or ,opper Fngs' #ol*ers @ ues "ith a le&/ c$te$t '0ic0 eJcee/- 9,99 are prohibite* in piping s3stems use* to ,on1e3 potable "ater'  Fl&.e/ >i$t for so( copper "ater tubing  e,ept for repairs @ ,onne,-ons to eis-ng lines ,onstru,te*  Ce#e$t M.t&. >i$t"ith su,h oints su,h oints proi*ited on ne *uildin+ seers.


20

NATIONAL PLUMBING CODE OF THE PHILIPPINES Bu.$e/ Le&/ >i$t-  shall be fuse* together to form a uniform "el* at lest thi,G as the lea* sheets being oine*'  A-be-t- Ce#e$t Se'e. Pipe >i$t-  shall be a slee1e ,oupling of the same ,omposi-on as the pipe or of other appro1e* materials? an* seale* "ith neoprene rubber rings or oine* b3 appro1e* t3pe ,ompression ,oupling  shall be for Centrifugal Cast Iron "ater pipe'  Mec0&$ic&l >i$t Ml/e/ Rubbe. Cupli$% i$t oine* b3 means of mol*e* neoprene rubber ,oupling oints' eoprene rubber shall be use* in soils sube,t to oil intrussion'  El&-t#e.ic G&-=ete/ 4 Rubbe..i$% i$t-  shall ,onform to IAMPO (Interna-onal Asso,ia-on of Plumbing @ .e,hani,al !,ials) Installa-on #tan*ar*' eoprene gasGets are re,ommen*e* for oil han*ling piping "orGs'  P.e--u.eLc= T8pe C$$ec2$  a me,hani,al ,onne,-on "hi,h *epen*s on an internal reten-on *e1i,e to pre1ent pipe or tubing separa-on' Conne,-on is ma*e b3 inser-ng the pipe or tubing insi*e the lling to a pres,ribe* *epth'  S0iel/e/ Cupli$% 4 Huble-- C&-t I.$ Pipe >i$t-  -0&ll $t be ,onsi*ere* as slip oints' , USE OF OINTS  shall be oine* "ith neoprene gasGet for hub @ spigot oints'  Cl&8 Se'e. pipe= shall be either ,aulGe* or threa*e*  Sc.e'e/ Pipe t C&-t i.$ Pipe  shall be b3 means of "ipe* oints to ,aulGing  Le&/ t C&-t I.$5 .u%0t I.$ . Steel ferrule? sol*ering nipple or bushing'  Cppe. &te. Tube  shall be oine* b3 brass Fngs properl3 sol*ere* or bra2e* together' 3, SPECIAL OINTS  Cppe. Tubi$% t Sc.e' Pipe i$t-  shall be ma*e b3 the use of brass a*aptor Fngs' /oints bet"een ,opper tubing @ the Fngs shall be properl3 s"eate* or sol*ere* or ma*e "ith are* @ s,re" en*s a*aptor Fngs the ,onne,-on bet"een the trea*e* pipe @ the Fng ma*e "ith a stan*ar* pipe si2e s,re" oint'  ma3 be use* in ture *rains @ traps'  Slip >i$t use* in soil @ "aste sta,Gs to pro1i*e ne,essar3 epansion @  EJp&$-i$ >i$t,ontra,-on oints of the pipes for high=rise buil*ings' ;, FLANGED FI:TURE CONNECTIONS  ;asket Material shall be %.&p0itei#p.e%$&te/ &-be-t-5 elt5 or similar appro1e* t3pes' 

CHAPTER 1;+ UALIT* 4 EIGHTS OF MATERIALS5 PLUMBING MATERIALS 4 REFLECTED STANDARDS 1, USE OF COPPER TUBING  Copper tube shall not be use* for piping ,arr3ing ,hemi,al or in*ustrial "astes , LEAD  Lea* ben*s @ lea* traps shall $t be le-- t0&$ 3,## in "all thi,Gness' 3, CLOSET RINGS (CLOSET FLANGES)  Ea,h su,h ,loset ring or ,loset ange shall be &pp.Ji#&tel8 17## in *iameter? "hen installe* together "ith the soil pipe? present a 3## 'i/e ange @ a groo1e fa,e to re,ei1e the ture gasGet or ball "a'  CaulGe*=on ,loset rings or ,loset anges shall $t be le-- t0&$ 6,;## t0ic= @ $t le-- t0&$ ?1 i$ alves shall be:  C&-t I.$ b/ie- for 6O4mm or larger C&-t B.&-- . B.$Ke b/ie- for si2es less than 6O4mm  ?, REFERENCE SPECIFICATIONS FOR PLUMBING MATERIALS = Asso,ia-on of ome Applian,e .anufa,turers  AA. = Ameri,an a-onal #tan*ar* Ins-tute  A#I = Ameri,an #o,iet3 of .e,hani,al Engineers  A#.E = Ameri,an #o,iet3 of #anitar3 Engineers  A##E = Ameri,an Water WorGs Asso,ia-on  AWWA = Cast Iron #oil Pipe Ins-tute  CI#PI = Commer,ial #tan*ar*s @ Pro*u,t #tan*ar*s  C# @ P# = 0e*eral #pe,i,a-ons  0#


21

NATIONAL PLUMBING CODE OF THE PHILIPPINES       

IAP.! = Interna-onal Asso,ia-on of Plumbing @ .e,hani,al !,ials PDI = Plumbing @ Drainage Ins-tute P#= Philippine a-onal #tan*ar* Cer-,a-on .arG L = n*er"riterUs Laboratories? In,' WXA = Water Xualit3 Asso,ia-on I#! = Interna-onal #tan*ar* !rgani2a-on E = European Commi+ee for #tan*ar*i2a-on Central #e,ratariat

6, PLUMBING MATERIALS (-#e)  AB#= A,r3lonitrile=Buta*ine=#t3rene = Drain? Waste @ &ent  DW& = Chlorinate* Pol31in3l Chlori*e  CP&C = nplas-,i2e* Pol31in3l Chlori*e  P&C  CPE= Chlorinate* Pol3eth3lene

APPENDI: A+ RECOMMENDED RULES FOR SIING THE ATER SUPPL* S*STEM 1, GENERAL  &elo,i-es shall $t eJcee/ 3#-ec of the maimum 1alues gi1en in the appropriate installa-on stan*ar*'  Allo"an,es in Eui1alent Length of Pipe shall be base* on $$.ece--e/ threa*e* Fngs' 0or .ece--e/ threa*e* Fngs or streamline sol*er Fngs? u-e 1 t0e &ll'&$ce-, , DEMAND EIGHT OF FI:TURES IN ATER SUPPL* FI:TURE UNITS  The "eights for maimum separate *eman*s ma3 be taGen as 7? of the *eman* for suppl3'

APPENDI: B+ PRI@ATE SEAGE DISPOSAL S*STEMS 1, GENERAL  Where permi+e* b3 the rules @ regula-ons of the Department of En1ironment @ atural $esour,es (DE$)' The buil*ing se"er ma3 be ,onne,te* to a pri1ate se"age *isposal s3stem @ shall be *etermine*:  =asis of locaon  7oil porosity  ;round $ater level The s3stem shall ,onsist of a sep-, tanG "ith eMuent *is,harging into & -ub-u.&ce /i-p-&l el/5 i$t $e (1) . #.e -eep&%e pit- or i$t & c#bi$&2$  -ub-u.&ce /i-p-&l el/ 4 -eep&%e pit-, , CAPACIT* OF SEPTIC TANS  The ,apa,it3 of an3 one sep-, tanG @ its *rainage s3stem shall be limite* b3 the -il -t.uctu.e cl&--ic&2$, 3, AREA OF DISPOSAL FIELDS 4 SEEPAGE PITS  When *isposal el*s are installe*? it shall ha1e: =inimum o1 '3m# of trench boCom shall be provided for each system   7ide $all area of the re>uired %C3.$mm 0 not to *e e"ceed '3.3mm belo$ leach line  When lea,hing be*s are permi+e* in lieu of tren,hes: Bhe area of each such bed shall be at least CE !reater than the tubular requirements  for trenches. 7ide $all area of the re>uired %C3.$mm 0 not to *e e"ceed '3.3mm belo$ leach line   o e,a1a-on for a leach line or leach bed shall eten* 'it0i$ 1,?# of the "ater table'  o e,a1a-on for a seepa!e pit shall eten* 'it0i$ 3# of the "ater table' ;, SEPTIC TAN CONSTRUCTION  #ep-, tanGs shall ha1e a #i$,   c#p&.t#e$t Inlet ,ompartment of an3 sep-, tanG shall $t be le-- t0&$ 3 of the total ,apa,it3 of the tanG' 3  #e,on*ar3 ,ompartment of an3 sep-, tanG shall ha1e a #i$, c&p&cit8  1# 4 #&J, c&p&cit8  13 the total ,apa,it3 of the tanG'  9,# J 1,?# .in' *imension


22


?,

6,

7,

,

,

19, 11,

9,6# #i$ @ 1,# #&J, *epth 3  #ep-, tanGs ha1ing 

23

NATIONAL PLUMBING CODE OF THE PHILIPPINES Eothin! Follo$s


24

National Plumbing Code of the Phil Summary

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