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SECTION 15140

DOMESTIC WATER PIPING

PART 1 - GENERAL

1.01 WORK INCLUDED

A. Pipe and pipe fittings.

B. Valves.

C. Domestic water piping system.

D. Potable water line in the building

E. Potable water supply line from the existing water networ to the building

!. "esting and cleaning#. Disinfection "reatment

1.02 RELATED WORK 

A. $ection %&'(' ) *angers and $upports

B. $ection %&'+% ) ,echanical Vibration and $eismic Control

C. $ection %&'+& ) ,echanical -dentification

D. $ection %&'' ) -nsulation.

E $ection %&/0' ) Plumbing $pecialities

!. $ection %&//' ) Plumbing E1uipments.

1.03 REFERENCES

A22A C3%&% Ductile iron cement lined pipe.

A22A C%%' Ductile iron fittings

B$ &&&( #eneral re1uirements for dimension and pressureratings for pipe of thermoplastic materials 4,etricseries5

B$ &6&&7 Part $pecification for the installation of thermoplastic pipes and fittings for use in domestic hot and coldwater services and heating systems.

B$ '%' Code of practice for pipelines

CP 0%8 Code of practice for plastic pipe wor  

D-9 '+( "hermoplastic pressure pipes : #eneral 1ualityre1uirements

DV$ 88'+ 2elding of thermoplastics

DV$ 88' 2elding machines and devices for thermoplastics

B$ /0+& P"!E tape for pipe thread sealing application

D-9 &'60'3( Brass and gunmetal fittings

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Din /+8(7 %6 ; %(00 ,ultilayer pipes

DV#2 2&0/7 &/87 &&8 ; &&8 ,ultilayer pipes fittings ; metal

DV#2 28+' Plastic fittings for multilayer system

B$ /&'/ Circular flanges for pipes valves and fittings 4P9designated A9$- B %(.%oint assemblies for polypropylene pressure

 pipesA2$ ' %'.6 $tandard for building services piping

1.04 QUALITY ASSURANCE

A. All valves and similar control gear7 used in the wors7 shall have themanufacturer?s name or logo7 si@e7 pressure rating and direction of flow cast3on7 on the body.

B. =niformity should be maintained in respect of connection standards 4threadsor flanges5 throughout. 2here this is not practical due to ustifiable reasons7ensure compatibility7 by using appropriate adaptors7 conversion spools7mating flanges and the lie with the written approval of the Engineer.

C. Pipes and fittings used in the wors shall have the standard of manufacture7type7 class or rating etc.7 continuously pointed or mared otherwise incompliance with the standard of manufacture materials without suchindemnification shall be reected.

1.05 SUBMITTALS

A. Product data including data on pipe materials7 pipe fittings7 valve andaccessories and recommend coating materials7 samples and manufacturer?sinstallation instructions or recommendations shall be submitted under 

 provisions of the #eneral Conditions of Contract.

B. Copies of valve ordering schedules shall be submitted for approval prior to placing the orders.

C. "est certificates from approved independent laboratories or testing agenciesshall be furnished at no extra cost.

1.06 DELIERY! STORAGE AND "ANDLING

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A. Products shall be delivered to site7 stored and protected under provision of the #eneral Conditions of Contract.

B. Pipes shall be stored on elevated racs and the ends ept closed with factorymanufactured plugs to prevent the entry of foreign matter..

C. Plastic and rubber products shall be stored out of direct sunlight.

D. Apply two codes of approved type of paints to all multi3layer pipes installedunder sunlight.

E. Valves shall be delivered and stored in labeled shipping containers. Plug and bull valves shall be ept in open position and gate

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PART - 2$ PRODUCTS

2.01 MANUFACTURERS

A. Plumbing Piping)

%. UNIPIPE.Or approved equal

2.02 PRODUCTS

A. Pipes and !ittings

SERVICE LOCATION "PE

1 Fresh Watera!" E#ter"al $elo%&rade%.ult!'la(er p!pes)*ade o+ over lap

%eldedalu*!"u*) %!thra!sedte*peratureres!sta",e PE(UNIPIPE)

- Fresh WaterSuppl(Co""e,t!o"

Fro* +resh %ater*a!" up to ta"!"s!de $u!ld!"&.

1.ult!'la(er p!pes)*ade o+ over lap%elded

alu*!"u*) %!thra!sedte*peratureres!sta",e PE(UNIPIPE)

/ Fresh Water,old) hot a"dhot %aterretur".

Other areas !"s!dethe 0u!ld!"&

1.ult!'la(er p!pes)*ade o+ over lap%eldedalu*!"u*) %!thra!sedte*peratureres!sta",e PE(UNIPIPE)

 The p!pes shall $e *ade o+ a lo"&!tud!"all( over'lap %eldedalu*!"u* p!pe %!th a" !""er a"d outer pol(eth(le"e la(er.All la(ers are to $e per*a"e"tl( $o"ded $( *ea"s o+ a"!"ter*ed!ate adhes!ve la(er. The pol(eth(le"e *ater!al shall$e o+ the "o"',ross l!"ed pol(eth(le"e $ut o+ ra!sedte*perature res!sta",e PE'RT2 a,,ord!"& to 3IN 145//sta"dards.

 The p!pes !" &e"eral shall have the +ollo%!"& ,hara,ter!st!,s6

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3 A$solutel( d!7us!o" t!&ht a"d there+ore e#,eed!"& therequ!re*e"ts o+ 3IN 89-4 sta"dards.

3 !"!*al !""er sur+a,e rou&h"ess :2 o+ ;.;;;8 **.3 For* sta$le due to the prese",e o+ the alu*!"u* la(er.3

$( ha"d or $e"d!"& *a,h!"e.3 Lo% heat e#pa"s!o" o+ a$out ;.;-?**@*: 3 Clea" a"d eas( to !"stall "o %eld!"&) solder!"&) or

$o"d!"&2.3 Corros!o" res!sta"t.3 E#,elle"t lo"&'ter* rupture stre"&th3 a#!*u* %orst',ase operat!"& te*perature ?BC2 a"d

pressure 1;0ars2.3 Lo% %e!&ht) a"d thus eas( to ha"dle.3 L!+e e#pe,ta",( o+ ?; (ears.

3 Ca" $e la!d d!re,tl( !" earth a"d $e used !" ra!" %aterre,(,l!"& s(ste*s.

B. !ittings)

All asso,!ated p!pe tt!"&s upto a"d !",lud!"& 9?** s!>esare to $e o+ t!"'plated $rass. F!tt!"&s o+ s!>es a$ove 9?**are to $e *ade o+ &u"*etal. The 18 upto a"d !",lud!"&/-** *etal tt!"&s shall have a proled alu*!"u* pressuresleeve. 8; up to a"d !",lud!"& 9?** tt!"&s shall have a

sta!"less steel pressure sleeve.

 The $rass allo( used !" the tt!"&s shall ,o"+or* to 3IN?;/;'4 a"d $e stress'rel!e+ a""ealed.

 The &u"*etal shall also ,o"+or* to 3IN ?;/;'4 a"d shall,o"ta!" "o *ore tha" /D lead a"d ;.4D "!,el.

A +urther ,o*po"e"t ,o"s!st!"& o+ h!&h per+or*a",epol(phe"(lsulpho"e PPSU2 ,a" $e used as a ,o*pos!te

tt!"& +or s!>e ra"&es upto a"d !",lud!"& /-**.

 T%o +or*s o+ tt!"&s ,a" $e used6 press or ,o*press!o"tt!"&s. I" ,ase o+ press tt!"&s) a" !"spe,t!o" %!"do% shall$e prov!ded o" the e#ter"al pressure sleeve) !" add!t!o" tot%o O'r!"&s $et%ee" the pressure sleeve a"d the tt!"&.S!*!lar O'r!"&s shall $e prov!ded $et%ee" the #ed part a"dthe t!&hte"!"& "ut !" ,ase o+ ,o*press!o" tt!"&s. Thequal!t( o+ the EP3 O'r!"&s shall $e o+ h!&h te*perature a"da&!"& res!sta",e a"d the!r *ater!al sat!s+(!"& the :TWer*a" Federal !"!str( o+

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C. >oints)

 The p!pes a"d tt!"&s shall $e e"t!rel( ,o*pat!$le %!th ea,hother a"d the o!"!"& shall $e ,arr!ed out !" str!,t a,,orda",e%!th the *a"u+a,turerGs !"stru,t!o"s.

 The p!pe o!"ts !" the *ult!'la(er p!pe%or shall $e *adee!ther $( press or ,o*press!o" te,h"!ques. The ,orre,t tools+or su,h te,h"!ques are to $e suppl!ed $( a"d used !"a,,orda",e to the *a"u+a,turerGs !"stru,t!o"s. 0othte,h"!ques are to !",lude p!pe e"ds as !"te&ral parts o+ thett!"&s %!th t%o O'r!"&s as seal'proo+ parts a"d e#ter"alsleeves !",ase o+ press tt!"&s2 a"d s%!vel "uts !" ,ase o+ ,o*press!o" tt!"&s2 to hold the p!pe !" pla,e. A u"!+or*!""er ,ha*+er o+ *!"!*u* -** depth shall $e *ade o" the

p!pe e"d us!"& the appropr!ate tools suppl!ed $( the*a"u+a,turer !"sur!"& the ,orre,t a"d ,o*plete pe"etrat!o"o+ the p!pe !"s!de the tt!"&.

Where d!re,ted) to e"a$le d!s,o""e,t!o" to $e u"dertae")so,et u"!o"s shall $e tted o" p!pes upto a"d !",lud!"&9?** tt!"&sH a$ove 9?**) =a"&ed o!"ts are to $e used.

2.03 PROTECTIVE WRAPPINGS

A. All pipes installed in walls7 wall partitions7 or ceilings7 aren?t subect to any protective wrapping.

0. P!pes !"stalled u"der d!re,t su"l!&ht) up to a"d !",lud!"&s!>es o+ /-** outer d!a*eter) are to $e !"stalled !"prote,t!ve

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A. =p to 8 inches 4&' mm5) Bron@e body7 non3rising stem and union bonnet7solid wedge or disc7 threaded ends.

B. ver 8 inches 4&' mm5) -ron body7 bron@e mounted 4-BB,57 outside screwand oe 4.$ ; 57 solid wedge renewable seats7 flanged ends.

2.06 GLOBE ALES

A. =p to 8 inches 4&' mm5) Bron@e body7 rising stem7 union bonnet7 renewablecomposition disc7 threaded ends.

B. ver 8 inches 4&'mm5) -ron body7 bron@e mounted 4-BB,57 rising stem7$.;.7 renewable seat7 flanged ends.

2.0# BALL ALES

A. =p to 8 inches 4&' mm5) Bron@e body7 stainless steel ball7 teflon seats andstuffing box ring7 lever operated7 threaded ends.

B. ver 8 inches 4&' mm5) Cast steel body) stainless steel7 full bore7 floating ballteflon seat and stuffing box seals7 lever or ey operated flanged ends.

2.0% SILENT C"ECK ALES

A. =p to 8 inches 4&' mm5) Bron@e7 in3line7 resilient seat and disc7 spring loaded7screwed ends.

B. ver 8 inches 4&' mm5) -ron body7 bron@e trim7 spring loaded7 renewablecomposite disc and seat7 flanged ends.

C. ver 8 inches 4&' mm5) -ron body7 bron@e trim7 swing type with externallever and weight7 renewable seat and disc7 flanged ends.

2.0& DRAIN ALES

Bron@e angle globe pattern7 ey operated7 threaded inlet and hose connection outletwith cap and chain.

2.10 PRESSURE RATINGS

A. =nless otherwise indicated all valves shall be rated for 8'' psig. woringwater pressure at 8&'o ! 4%8%o C5.

B. Contractor shall allow for selecting higher pressure rated valves to meet thevalve construction features.

2.11 ALE OPERATORS

A. Provide hand wheels

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B. Provide one ey

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PART 3 - E'ECUTION

3.01 PREPARATION

A. 0evel p!pe e"ds. Re*ove $urrs.

B. Re*ove s,ale a"d d!rt) o" !"s!de a"d outs!de) $e+oreasse*$l(.

C. Prepare p!p!"& ,o""e,t!o"s to equ!p*e"t %!th appropr!atett!"&s.

3.02 INSTALLATION

A. Route p!p!"& !" orderl( *a""er a"d *a!"ta!" &rad!e"t.

B. I"stall p!p!"& !" a %a( that ,o"serves $u!ld!"& spa,e a"ddoes "ot !"ter+ere %!th the use o+ spa,e.

C. roup p!p!"& %he"ever pra,t!,al at ,o**o" elevat!o"s.

D. I"stall p!p!"& to allo% +or e#pa"s!o" a"d ,o"tra,t!o" %!thoutstress!"& p!pe o!"ts or ,o""e,ted equ!p*e"t.

E. I"stall e#posed p!p!"& parallel or at r!&ht a"&les to the$u!ld!"& %alls) e#,ept %here other%!se sho%" o" theCo"tra,t 3ra%!"&s.

!. 0e"d!"& or +or*!"& o+ p!p!"& !s per*!tted up to a"d !",lud!"&/-** outer d!a*eter p!pe s!>es.

#. Prov!de adequate ,leara",e +or !"stallat!o" o+ !"sulat!o" a"da,,ess to valves a"d tt!"&s.

*. Prov!de *!"!*u* ,leara",e $et%ee" p!p!"& ,overed $( th!sSe,t!o" a"d other serv!,es.

-. Prov!de a,,ess doors %here valves a"d tt!"&s are "ote#posed.

>. Esta$l!sh elevat!o"s o+ $ur!ed p!p!"& outs!de the $u!ld!"& toe"sure "ot less tha" 4; ,* -8 !",h2 o+ ,over.

. 0edd!"& +or all !"ds o+ p!pes shall $e !" a,,orda",e to*!"!str( spe,!,at!o"s a"d deta!ls.

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F. All valves shall $e sa*e s!>e as p!pel!"e e#,ept !+ other%!se"oted o" the ,o"tra,t dra%!"&s.

,. Slope %ater p!p!"& a"d arra"&e to dra!" at lo% po!"ts.

 9. E#,avate !" a,,orda",e %!th the ,o*pa"( pro,edurerequ!re*e"ts a"d spe,!,at!o".

3.03 EXPANSION:

A. R!&!d !"stallat!o" o+ the *ult!'la(er s(ste* !s "ot poss!$le. Ther*al e#pa"s!o" o+ the p!pes *ust al%a(s $e a$sor$ed or,o"trolled.

0. ult!'la(er p!pes +ull( e#posed to ther*al e#pa"s!o" *ust $e

prov!ded %!th appropr!ate ther*al ,o*pe"sat!o". For th!spurpose) "o%led&e o+ all #ed po!"ts !s "e,essar(.Co*pe"sat!o" should tae pla,e $et%ee" t%o #ed po!"tsa"d d!re,t!o"al ,ha"&es.

C. For p!pes !"te"ded +or ,o",ealed !"stallat!o") the ther*ale#pa"s!o" !s a$sor$ed $( !"sulat!o" !" the area o+ d!re,t!o"al,ha"&e.

3. The ther*al e#pa"s!o" !s ,al,ulated a,,ord!"& to the

+ollo%!"& +or*ula6

L J K # L # T

Where6 L !s the ther*al e#pa"s!o" to $e ,al,ulated !"*!ll!*eters.K !s the ther*al e#pa"s!o" ,oe++!,!e"t ;.;-? **@*:2.L !s the p!pe le"&th !" *eters.T !s the te*perature d!++ere",e.

E. The $e"d!"& le& shall $e ,al,ulated a,,ord!"& to the

+ollo%!"& +or*ula6

0S J /; # da # L21@-

Where6 0S !s the $e"d!"& le& le"&th to $e ,al,ulated !"*eters.da !s the outer d!a*eter o+ the p!pe

3.04 THERMAL INSULATION OF MULTI LAYER PIPES:

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A. Ther*al !"sulat!o" o+ *ult!'la(er p!pes shall $e ,arr!ed out !"a,,orda",e %!th the Ne% er*a" 3!re,t!ve +or E"er&(Sav!"& E"EV2 a"d as !"d!,ated $( the *a"u+a,turer.

3.05 APPLICATION

A. I"stall u"!o"s or =a"&es do%"strea* o+ valves a"d atequ!p*e"t or apparatus ,o""e,t!o"s.

B. I"stall dra!" valves at s(ste* lo% po!"ts a"d at ea,h r!ser$ase.

C. I"stall +ull $ore $all valves at %ater ta"er !"let a"d at %aterstora&e ta" dra!".

D. I"stall &ate valves +or shuto7 a"d to !solate equ!p*e"t) parto+ s(ste*s) or vert!,al r!sers.

E. I"stall &lo$e valves +or throttl!"&) $(pass) or *a"ual =o%,o"trol serv!,es.

!. I"stall spr!"& loaded ,he, valves o" d!s,har&e o+ %aterpu*ps.

3.06 PIPE SLEEES

A. !urnish sleeves in connection with all piping passing through walls7 slabs7 building construction. "he sleeves shall be set in new concrete construction before pouring. "he Contractor shall chec the positions and satisfy himselfthat they are set correctly.

3.0# FIELD QUALITY CONTROL

A. "esting of Pressuri@ed Piping)

%. "he pipes shall be ointed7 plugged and shall have been in position for at least 8/ hours7 before the tests are carried out.

8. "he piping shall be tested for line7 gradient and water tightness. "heContractor shall furnish all labor7 and necessary testing instrumentssuch as gauges7 pumps etc. as directed by the Engineer. A minimum of two 485 nos. identical pressure gauges shall be installed at extremitiesof the piping circuit to be tested.

0. !ill the piping with clean fresh water7 leaving all high points open toallow for purging of air. Allow a soaing period of at least 8/ hoursfor cement lined or concrete pipes.

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/. !or the test procedure to be carried out correctly7 all measuringdevices used must be reliably accurate to a differential3pressurereading of '.% bar.

&. "he pressure measuring device should be attached at the lowest pointof installation being tested. "he installed but still uncovered pipeconduits must be filled with filtered drining water and purged of air.

(. "he system should be at least tested at %.& times the operating pressure and not less than %& bars.

+. "he shutoff valves and taps located upstream and downstream of heaters and storage tans must be closed to isolate the section being

 pressure3tested from the rest of the system.

. A preliminary test shall be carried out as follows)3 "he system shall be brought up to test pressure7 with the operation

repeated twice at intervals of %' minutes and within a period of 0'minutes.

3 "he test pressure must not have fallen by more than '.( bar at theend of a further 0' minutes.

"he main test shall be carried out as follows)3 $hall be carried out immediately after the preliminary testing.3 Pressure testing is regarded as successfully concluded if the test

 pressure has fallen by no more than '.8 bar at the end of further 8hours.

3.0% PIPE BRACKETS AND SUPPORTS

A. All Pipes must be routed so that thermal expansion 4heating and cooling5 isunhindered.

B. "hermal expansion between two fixed points can be absorbed by expansionelbows7 compensators or a directional change of the piping.

C. 2here pipes are fixed exposed to ceilings using pipe clips7 no supportingshells need to be used. "he following table shows the maximum fixingdistance F between the individual pipe clips for the various pipe si@es.

Dimension ,aximum fixing distance between pipe clips 4F5

D x s 4mm5 *ori@ontal Vertical

%/ x 8.' %.8' %.&&

%( x 8.' %.8' %.&&

% x 8.' %.8' %.&&

8' x 8.8& %.0' %.+'

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8& x 8.& %.&' %.6&

08 x 0.' %.(' 8.%'

/' x /.' %.+' 8.8'

&' x /.& 8.'' 8.('

(0 x (.' 8.8' 8.&+& x +.& 8./' 0.%'

6' x .& 8./' 0.%'

%%' x %'.' 8./' 0.%'

3.0& NOMINAL AND ACTUAL DIAMETERS

A. E1uivalence between si@es as defined on the Drawings and as indicated in thetable below)

N()*+, M/* I)*, W, I++D*,)/ S** E*7,+/ T8*9+:: D*,)/

M) I+8 M) M)

%/ '.0+& 8 %'

%( '.& 8 %8

% '.(8& 8 %/

8' '.+& 8.8& %&

8& % 8.& 8'

08 %.8& 0 8(

/' %.& / 08

&' 8 /.& /%

(0 8.0+& ( &%

+& 8.& +.& ('

6' 0 .& +0

%%' / %' 6'

3.10 CLEANING

A. "he entire system must be thoroughly flushed out once pressure testing has been concluded. !urther details of the procedures used for pipe3conduit

flushing can be found in the technical rules for drining3water installationlisted in section %%.8 of D-9 %638.

B. ,ulti3layer pipes should be in any case not subect to the danger of impurity3induced corrosion. "herefore7 the multi3layer system shall be flushed out for 

 both reasons of hygiene and for removing impurities and foreign bodies. "heflushing procedure shall be carried out using pure filtered water at the normalsupply pressure7 unless indicated otherwise. "he filters used shall conform toD-9 %6(08 standards.

C. All devices and delicate fittings shall not be fitted until after the flushing

operation has taen place. !ine filters attached to valves and taps shall becleaned out after flushing unless they can be removed or bypassed.

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D. All maintenance valves7 shutoff taps7 pressure reducers 4if fitted5 shall be fullyopened during flushing7 and adusted later 4regarding pressure reducingvalves5.

E. !lushing should begin from the main shut3off valve and proceed outwards7one section and stretch at a time7 to the section located farthest from thesupply inlet. !lushing should then begin at the end of the riser and proceedfloor by floor.

!. 2ithin each storey conduit or interval section of inlet pipe7 flushing is carriedout floor by floor in se1uence7 using the minimum number of outlet pointsshown in the following table as guide for each section being flushed7 openingthe outlet point fully for at least & minutes.

#. "he outlet points within a particular storey are fully opened7 starting with the

outlet point located farthest from the riser. After a five3minute flushing periodat the last flushing outlet opened7 the outlet points are shut once moreworing in reverse order.

3.11 DISINFECTANT TREATMENT

"he contractor shall flush the water system upon completion with fresh water thenapply disinfection treatment for the complete system in accordance with A22AC('% and relevant water ministry specifications. !lushing and disinfection treatmentshall be witnessed by an approved specialist. =pon acceptance of the treatmentresults7 the contractor shall flush the system again by fresh water until it is free of chemicals. Cost of disinfection and flushing water shall be borne by the contractor.

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Pipe si@es of thedistribution conduitscurrently beingflushed

08mm /'mm &'mm (0mm +&mm 6'mm %%'mm

,inimum number of 

outlet points to beopened D9 %&

8 / & %8 % 8

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E9D ! $EC"-9

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