KSRB Section-13 Water-Supply.doc

8/14/2019 KSRB Section-13 Water-Supply.doc

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SECTION 13SECTION 13

WATER SUPPLYSPECIFICATIONS FOR WATER SUPPLY WORK13.1. General13.1.1. Any damage caused to the building, or to electric, sanitary water su ly or other installationsetc. therein either due to negligence on the art o! the contractor, or due to actual re"uirements o! thewor#, shall be made good and the building or the installations shall be restored to its original conditionby the contractor. Nothing e$tra shall be aid !or it, e$ce t where otherwise s eci!ied.13.1.%. All water su ly installation wor# shall be carried out through licensed lumbers.13.1.3. It is most im ortant to ensure that wholesome water su ly ro&ided !or drin#ing and culinary

ur oses, is in no way liable to contamination !rom any less satis!actory water. There shall, there!ore,be no cross connection whatsoe&er between a i e or !itting !or con&eying or containing wholesomewater and a i e or !itting !or con&eying or containing im ure water or water liable to contamination oro! uncertain "uality o! water which has been used !or any ur ose. The ro&ision o! re!lu$ or non'return &al&es or closed and sealed &al&es shall not be construed a ermissible substitute !or com leteabsence o! cross connection.13.1.(. )here a su ly o! wholesome water is re"uired as an alternati&e or stand by to su ly o! less

satis!actory water or is re"uired to be mi$ed with the latter, it shall be deli&ered only into a cistern, andby a i e or !itting discharging into the air ga at a height abo&e the to edge o! the cistern e"ual totwice its nominal bore, and in no case less than 1* cm.13.1.*. No i ing shall be laid or !i$ed so as to ass into, through or ad+oining any sewer, scour outletor drain or any manhole connected therewith nor through any ash it or manure' it or any material o!such nature that would be li#ely to cause undue deterioration o! the i e.13.1. . )here the laying o! any i e through !ouled soil or re&ious material is una&oidable, the i ingshall be ro erly rotected !rom contact with such soil or material by being carried through an e$teriorcast iron tube or by some other suitable means. Any i ing or !itting laid or !i$ed, which does notcom ly with the abo&e re"uirements, shall be remo&ed and re'laid in con!ormity with the abo&e

re"uirements.13.1.-. The design o! the i e wor# shall be such that there is no ossibility o! bac# !low towards thesource o! su ly !rom any cistern or a liance whether by si honage or otherwise, and re!lu$ or non'return &al&es shall not be relied u on to re&ent such bac# !low.13.1. . All i e wor# shall be so designed, laid or !i$ed, and maintained as to be and to remaincom letely watertight, thereby a&oiding waste o! water, damage to ro erty and the ris# o!contamination o! the water con&eyed.13.1./. In designing and lanning the layout o! the i e wor#, due attention shall be gi&en to thema$imum rate o! discharge, re"uired economy in labour and materials, rotection against damageand corrosion, rotection !rom !rost, i! re"uired, and to a&oidance o! airloc#s, noise transmission andunsightly arrangement.13.1.10. To reduce !rictional losses, i ing shall be as smooth as ossible inside. ethods o! +ointingshall be such as to a&oid internal roughness and ro+ection at the +oints, whether o! the +ointingmaterials or otherwise.13.1.11. Change in diameter and in direction shall re!erably be gradual rather than abru t to a&oidundue loss o! head. No bend or cur&e in i ing shall be made so as to materially diminish or alter thecross'section.13.1.1%. 2nderground i ing shall be laid at such a de th that it is unli#ely to be damaged by !rost ortra!!ic loads and &ibrations. It shall not be laid in ground liable to subsidence, but where such groundcannot be a&oided, s ecial recautions shall be ta#en to a&oid damage to the i ing. )here i inghas to be laid across recently disturbed ground, the ground shall be thoroughly consolidated so as to

ro&ide a continuous and e&en su ort.

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SECTION 13

clean, smooth and !ree !rom sand etc. 9urning, lugging, sto ing or atching o! the casting shall notbe ermissible. The bodies, bonnets, s indles and other arts shall be truly machined so thatwhen assembled the arts shall be a$ial, arallel and cylindrical with sur!ace smoothly!inished. The area o! water way o! the !ittings shall not be less than area o! the nominal bore,chromium lating where&er s eci!ied shall be o! 0.3 micron con!orming to IS : ( %-' 3. Thechromium shall ne&er be de osited on brass unless a hea&y coating o! nic#el is inter osed. Inthe case o! iron a thic# coat o! co er shall !irst be a lied, then one o! nic#el and !inally thechromium. In !inish and a earance the lated articles when ins ected shall be !ree !rom

lating de!ects such as blisters, its roughness and un lated areas and shall not be stained ordiscoloured. 9e!ore a !itting is lated, the washer late shall be remo&ed !rom the !ittings, thegland ac#ing shall be rotected !rom the lating solution.

13.%.1. Ball Valve (Brass - The ball &al&e shall be o! 9rass or ;un metal as s eci!ied con!orming toIS: 1-03' / 6


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SECTION 136a7 One sluice &al&e class 1 ty e, con!orming to IS: - 0' (.6b7 A duc# !oot bend.6c7 A * cm malecou ling instantaneous attern and 6d7 Cast iron ca ermanently secured to the duc# !oot'bend bymeans o! a chain. )here the !ire ser&ice re"uirement o! cou ling di!!ers !rom the abo&e, the re"uisitecou ling shall be ro&ided at no e$tra cost.


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SECTION 13


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SECTION 13The body and co&er shall be o! good "uality cast iron, s indle o! bron e and the nut and the &al&eseat o! leaded tin bron e. The bodies, s indle and other arts shall be truly machined with sur!acesmoothly !inished.13.%.*. F%ll 'a. valve )rass 6


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SECTION 1313.%.1%.%. The nominal diameters o! i e shall be *0 mm, 0 mm, 100 mm, 1%* mm, 1*0 mm, %00mm, %*0 mm, 300 mm, (*0 mm, 00 mm, /00 mm and 1000 mm. The &ariation o! the internaldiameter shall not be more than 10F o! the nominal internal diameter. The interior o! i es shall ha&ea smooth !inish and regular sur!ace and regular internal diameter. It shall be straight within tolerancelimits.13.%.1%.3. S e*"als2 4lain ended cast iron s ecials shall be used to suit the diameter o! i e.

Table (@iameters

mm8ori ontal ty e

Dg.Bertical ty e

Dg.1* 0.30 0.%*%0 0.** 0.%*%* 0./0 0.-*3% 1.%* 0./0(0 1.-0 1.%0*0 %./0 1.(*

* *.%* %.1*0 -.-0 (.10

Table *

Class Test 4ressureClass 5 * * #g?s". cm 6*0 m head7

Class 5 10 10 #g?s". cm 6100 m head7Class 5 1* 1* #g?s". cm 61*0 m head7Class 5 %0 %0 #g?s". cm 6%00 m head7Class 5 %* %* #g?s". cm 6%*0 m head7

13.%.13. P" es / Cas "r&n *en r" %#all. *as (S %n13.%.13.1. The s un iron i es shall con!orm to IS: 1*3 ' /. The s un iron i es, shall be o! cast ironcasted centri!ugally and &ary in diameters !rom 0 mm to -*0 mm. These shall be o! class A, class

A and class 9, as s eci!ied. These i es shall be used !or water ressures u to hal! the hydraulictest ressure as detailed in Table .13.%.13.%. S e*"als - The s ecials shall con!orm to IS: 1 3 ' /. The hydraulic test ressure o! eachclass shall be as detailed in Table -.

Table

Ty es o! i es Test ressure o! Dg?s". cmClass A Class A Class 9S igot and soc#et i e in all diameters 1% 1 %(


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SECTION 13

Nominal 5 @iameter

Test ressure in Dg?s". cm.6metre head7


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SECTION 13

13.%.1*.%. !"#$ :ens" . P&l.e $.lene is rather tougher as com ared to low'density olyethylene.4i es u to 1 00 mm diameter ha&e been roduced out o! this material. In India howe&er, 8@4E

i es are a&ailable !rom 1 mm to (00 mm dia. 2se o! these i es in small diameters !or internalwater su lies has not !ound ready acce tance because o! ractical roblems li#e on'site +ointing,and ta#ing out o! &arious connections in lumbing. Their use in larger diameters !or con&eyance o!water ? e!!luents and in long run !rom oint to oint has been !ound &ery suitable and has been readilyacce ted by the 4ublic 8ealth Engineering and similar de artments, in the country.13.%.1*.3. P&l.e $.lene " es are normally a&ailable in blac# colour. These are resistant to mostchemicals, e$ce t nitric acid, and &ery strong acids, !ats, and oils and certain sol&ents articularlychlorinated ones. There is a henomenon called en&ironmental stress crac#ing which means that i!

olyethylene is stressed at normal tem eratures and comes into contact with certain materials then itwill crac# e&entually !ail. The material include detergents, organic acids, esters, aldehydes, #etone,amides nitro com ounds, and alcohols 6but not beer7. The 8@4E is worse then @4E in this res ect.13.%.1*.(. R"#", (%n las "*"se, PVC " es are widely acce ted !or a lications such as cold waterser&ice internal ? e$ternal water su lies systems, water mains, rain water system, soil waste i ingsystem, soil waste i ing system, and underground 6sewage i es7 drainage i ing system. Gigid

4BC is three times as rigid as olyethylene it is also much stronger and will withstand much higherressure !or a gi&en wall thic#ness. Hoints can easily be made in rigid 4BC i es by sol&ent welding,

and a whole range o! in+ection moulded matching !ittings and s ecials are a&ailable !or these i es.Gigid 4BC i es are normally a&ailable in the !ollowing shades:')hite ? cream. ight to dar# grey. 9lac#.In general rigid 4BC is resistant to most inorganic acids, al#alis and salts, as well as many organicchemicals. It is "uite resistant to most e!!luents, salt water and lating solutions, corrosi&e !umes, soilsand the li#e which lead to its a lications o&er a wide !ield. The material is also er!ectly sa!e with

otable water, whether hard or so!t, and in the !ormer case it tends to retard the !ormation o! scale.Those materials which do not attac# it include concentrated o$idi ing acids, esters, #etones, aromatic

and chlorinated hydrocarbons, organo'nitro com ounds, organo'amino com ounds, lac"uer sol&entsand acetic anhydride. The i es shall be reasonably round and shall be su lied in straight lengthswith soc#eted ends. The internal and e$ternal sur!aces o! i es shall be smooth clean, !ree !romgroo&ings and other de!ects. The end shall be cleanly cut and s"uare with the a$is o! the i e. The

i e shall be designated by e$ternal diameter and shall con!orm to IS: (/ *' Ge&ised in allres ects. The dimensions and tolerances o! rigid 4BC i es shall be as in Anne$ure 13.A.(13.%.1*.*. F" "n#s -


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SECTION 13

less than the area e"ual to the nominal bore o! the i e. The &al&e shall be mar#ed with an arrow toshow the direction o! turn !or closing o! the &al&e.13.%.1 . S%r a*e )&> (F"#< 3?5 - This shall be o! cast iron, well made and !ree !rom casting andother de!ects. All shar edges shall be remo&ed and !inished smooth. The sha e and dimensions !orsur!ace bo$es !or sto coc#s, sluice &al&es, !ire hydrants, water meters etc. shall be as s eci!ied in


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SECTION 13

13.%.1/. . Ca - Ca o! water meters o! Ty e A shall be made !rom brass, bron e, aluminium alloy orsuitable lastics. The ca o! water meters o! Ty e 9 shall be made o! lastics or aluminium alloy.)here the ca and registration bo$ are integral, the materials !or ca may be same as used !orregistration bo$. The ca shall be so designed and !i$ed to the registration bo$ as to a&oid entry o!water and dirt. The trans arent window which co&ers the dial shall be inserted !rom the inside into the


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SECTION 13

!or body. Ni les o! water meters o! Ty e 9 shall be made o! the same materials as s eci!ied !or thebody where they are integral with the body o! the water meters where they are se arate, they shall bemade o! malleable iron, gal&ani ed steel or suitable lastics. The nuts shall be o! the same materialas used !or ni les. The internal diameter o! the ni le where it connects the i e line shall be e"ualto that corres onding to the nominal si e o! the meter. The threads on the connection shall con!orm toIS: **('1/ *. The minimum length o! the threads shall be as gi&en in Table /.13.%.1/.1%. S ra"ners - )ater meters shall be ro&ided with strainers. Strainers shall be o! a materialwhich is not susce tible to electrolytic corrosion. They shall be o! lastics or other corrosion 5resistant materials !or both Ty e A and Ty e 9 meters. They shall be rigid, easy to remo&e and clean,and shall be !itted on the inlet side o! the water meter. It shall be ossible to remo&e and clean thestrainer in such a way as not to ermit disturbing the registration bo$ or tam ering with it. The strainershall ha&e a total area o! holes not less than twice the area o! the nominal inlet bore o! the i e towhich the meter is connected howe&er, in the case o! meters ro&ided with internal strainer in&ol&ingo ening o! the registration bo$ !or cleaning, an additional e$ternal strainer shall be !itted on the inletside satis!ying the abo&e re"uirements.O&erall dimension o! water meters shall be as s eci!ied in Table 10.

Table / inimum length o! thread on connectionNominal si e o! meter inimum length o! thread

1* 13%0 1%* 1/(0 %1*0 %*

6All dimensions in millimeters7 Screws studs shall be o! brass or other corrosion resistant material.Table 10 O&erall dimensions o! water meters

Nominal si eo! eter

O&erall length includingni les

O&erall width.6 a$7

O&erallheight 6 a$7

1 % 3 (1* %*0 130 1 0%0 %/0 130 1 0%* 3 0 1(0 %00(0 (30 %30 %*0*0 (-0 %*0 300

All dimensions are in mm.Tolerances on the o&erall length shall be * mm.13.%.1/.13. Ca a*" . &n s$&r er"&, ra "n# &r n&0"nal *a a*" . - The nominal ca acity o! thewater meters shall be as s eci!ied in Table 11. The meters shall be ca able o! gi&ing minimumdischarges as slated in the table without the head loss e$ceeding 10 m within the meters.13.%.%0. Yarn (S %n - S un yarn shall be o! clean hem and o! good "uality. It shall be soa#ed inhot coal tar or bitumen and cooled be!ore use.

13.3. SPECIFICATION FOR LAYING AN: @OINTING OF PIPES AN: FITTINGS13.3.1. Unl&a,"n#13.3.1.1. The i es shall be unloaded where they are re"uired.13.3.1.%. 2nloading 6e$ce t where mechanical handling !acilities are a&ailable7 5 4i es weighing u to

0 #g shall be handled by two ersons by hand assing. 8ea&ier i es shall be unloaded !rom thelorry or wagon by holding them in loo s, !ormed with ro es and sliding o&er lan#s set not stee erthan (* degree. The lan#s shall be su!!iciently rigid and two ro es shall always be used to roll the

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SECTION 13

i es down the lan#s. The ro es should be tied on the side o osite the unloading. Only one i eshall be unloaded at a time.

Table 11 Nominal ca acity o! water metersNominal si e o!

meter6mm7@ischarge er hour

Semi ositi&e Ty e6liters7 In!erential Ty e 6liters71* %000 %*00%0 3(00 3*0%* **00 **00(0 10000 1 000*0 1*000 %3000

13.3.1.3. 2nder no circumstances shall be the i es be thrown down !rom the carriers or be draggedor rolled along hard sur!aces.13.3.1.(. The i es shall be chec#ed !or any &isible damage 6such as bro#en edges, crac#ing ors alling o! i e7 while unloading and shall be sorted out !or reclamation. Any i e which showssu!!icient damage to reclude it !rom being used shall be discarded.13.3.%. S &r"n# - The i es and s ecials shall be handled with su!!icient care to a&oid damage tothem. These shall be lined u on one side o! the alignment o! the trench, soc#et !acing u grade when

line runs u hill and u stream when the line runs on le&el ground.13.3.%.%. Each slac# shall contain i es o! same class and si e, consignment or batch number and

articulars o! su liers, where&er ossible, shall be mar#ed on the stac#.13.3.%.3. Storage shall be done on !irm, le&el and clean ground. )edges shall be ro&ided at thebottom layer to #ee the stac# stable.13.3.3. C% "n#13.3.3.1. Cutting o! i es may be necessary when i es are to be laid in lengths shorter than thelengths su lied, such as while re lacing accessories li#e tees, bends, etc. at !i$ed osition in the

i e lines.13.3.3.%. A line shall be mar#ed around the i e with a chal# iece at a oint where it is to be cut. The

line shall be so mar#ed that the cut is truly at right angle to the longitudinal a$is o! the i e. The i eshall be rigidly held on two arallel ra!ters nailed to cross beams, ta#ing care that the ortion to be cutdoes not o&erhang and the cut mar# is between the two ra!ters. The i e shall be neatly cut at thechal# mar# with car enter>s saw or hac#saw ha&ing a long blade, by slowly rotating the i e aroundits longitudinal a$is so as to ha&e the uncut ortion on to !or cutting. Cutting o! the i e at theo&erhang should, as !ar as ossible, be a&oided, as an o&erhanging and is liable to tear o!! due to itsweight be!ore the cutting is com lete.13.3.(. Tren*$es13.3.(.1. The trenches shall be so dug that the i es may be laid to the re"uired alignment and atre"uired de th.13.3.(.%. Co&er shall be measured !rom to o! i e to the sur!ace o! the ground.13.3.(.3. The bed o! the trench, i! in so!t or made u earth, shall be well watered and rammed be!orelaying the i es and the de ressions, i! any, shall be ro erly !illed with earth and consolidated in %0cm layers.13.3.(.(. I! the trench bottom is e$tremely hard or roc#y or loose stony soil, the trench shall bee$ca&ated at least 1*0 mm below the trench grade. Goc#s, stone or other hard substances !rom thebottom o! the trench shall be remo&ed and the trench brought bac# to the re"uired grade by !illingwith selected !ine earth or sand 6or !ine moorum i! !ine soil or sand is not a&ailable locally7 andcom acted so as to ro&ide a smooth bedding !or the i e. )here e$ca&ation re"uires blastingo eration, it shall be ensured that no i es ha&e been stac#ed in the &icinity and com leted i e line

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SECTION 13in the &icinity has already been co&ered be!ore starting o! blasting o erations this is necessary to

re&ent damage to the e$ osed i es in the &icinity by !alling stones as a result o! blasting.13.3.(.*. A!ter the e$ca&ation o! the trench is com leted, hollows shall be cut at the re"uired ositionto recei&e the soc#et o! the i es and these hollows shall be o! su!!icient de th to ensure that thebarrels o! the i es shall rest throughout their entire length on the solid ground and that su!!icients aces le!t !or +ointing the underside o! the i e +oint. These soc#et holes shall be re!illed with sanda!ter +ointing the i e.13.3.(. . Goots o! trees within a distance o! about 0.* meter !rom the side o! the i e line shall beremo&ed or #illed.13.3.(.-. The e$ca&ated materials shall not be laced within 1 meter or hal! o! the de th o! the trench,whiche&er is greater, !rom the edge o! the trench. The materials e$ca&ated shall be se arated andstac#ed so that in re!illing they may be relaid and com acted in the same order to the satis!action o!the engineer.13.3.(. . The trench shall be #e t !ree !rom water. Shoring and timbering shall be ro&ided where&erre"uired. E$ca&ation below water table shall be done a!ter dewatering the trenches.13.3.(./. )here the i e line or drain crosses an e$isting road, the road crossing shall be e$ca&atedhal! at a time, the % nd hal! being commenced a!ter the i es ha&e been laid in the !irst hal! and the

trench re!illed. Necessary sa!ety measures !or tra!!ic as directed shall be ado ted. All ty es, watermains cables, etc., met within the course o! e$ca&ation shall be care!ully rotected and su orted.Care shall be ta#en not to disturb the electrical and communication cable met with during course o!e$ca&ation, remo&al o! which, i! necessary, shall be arranged by the engineer.13.3.*. La."n# - The i es shall be lowered into the trench by means o! suitable ulley bloc#s, sheerlegs chains ro es etc. In no case the i es shall be rolled and dro ed into the trench. One end o!each ro e may be tied to a wooden or steel eg dri&en into the ground and the other end held by menwhich when slowly released will lower the i e into the trench. A!ter lowering, the i es shall bearranged so that the s igot o! one i e is care!ully centered into the soc#et o! the ne$t i e, The and

ushed to the !ull distance that it can go. The i e line shall be laid to the le&els re"uired. S ecials

shall also be laid in their ro er osition as stated abo&e.13.3.*.%. )here so directed, the i es and s ecials may be laid on masonry or concrete illars. Thei e laid on the le&el ground, shall be laid with soc#et !acing the direction o! !low o! water.

13.3.*.3. The i es shall rest continuously on the bottom o! the trench. The i es shall not rest onlum s o! earth or on the +oints.


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SECTION 1313.3. . T$r%s Bl&*+s (F"#< - Thrust bloc#s are re"uired to trans!er the resulting hydraulic thrust!rom the !itting o! i e on to a larger bond bearing soil section.13.3. .1. Thrust bloc#s shall be installed where&er there is a change in the direction ? si e o! the i eline or the ressure line diagram, or when the i e line ends at a dead end. I! necessary, thrust bloc#smay be constructed at &al&es also.13.3. .%. Thrust bloc#s shall be constructed ta#ing into account the i e si e, water ressure, ty e o!!itting, gra&ity com onent shell when laid on slo es and the ty e o! soil. The location o! thrust bloc#s!or &arious ty es !ittings is gi&en in


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SECTION 1313.3. .1. A!ter a new i e has been laid, +ointed and bac# !illed 6or any &al&ed section thereo!7, it shallbe sub+ected to the !ollowing two tests:a7 4ressure test at a ressure o! at least double the ma$imum wor#ing ressure' i e and +oints shallbe absolutely water tight under the test.b7 ea#age test 6to be conducted a!ter the satis!actory com letion o! the ressure test7 at a ressureto be s eci!ied by the authority !or duration o! two hours.


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SECTION 1313.3. .%. !.,r&s a "* Tes s2 The ortions o! the line shall be tested by sub+ecting to ressure test asthe laying rogresses be!ore the entire line is com leted. In this way any error o! wor#manshi will be!ound immediately and can be corrected at a minimum cost. 2sually the length o! the section to betested shall not e$ceed *00 m.


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SECTION 1313.3. .(. 4rior to testing, enough bac# !ill as described shall be laced o&er the i e line to resistu ward thrust. All thrust bloc#s !orming art o! the !inished line shall ha&e been su!!iciently cured andno tem orary bracing shall be used.13.3. .*. The o en end o! the section shall be sealed tem orarily with an end ca ha&ing an outletwhich can ser&e as an air relie! &ent or !or !illing the line, as may be re"uired. The blind !ace o! theend ca shall be ro erly braced during testing by screw +ac#s and wooden lan#s or steel late asshown in


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SECTION 13

13.(.(.1. La."n# & " "n#s ' All cast iron !ittings shall be lain ended to suit the class and diameter o!i e manu!actured. Cast iron !ittings are +ointed by cast iron detachable +oints only. Cast iron s ecials

ha&ing !langes are +ointed in the i e line with cast iron !lange ada ters ha&ing one end !langed andthe other lain ended.13.(.(.%. An*$&ra#es ' It shall articularly be noted that the cast iron +oints do not hold i e endwithin !irmly. @uring wor#ing or test ressure, there will be the tendency !or the i e ends or s ecialsends to sli out the +oint, more so in case o! blan# end ca used !or closure o! i e line and in case o!degree bends and tees. In order to #ee them !irmly in the i e line, anchoring o! these s ecials arenecessary against the direction o! thrust. The anchorage shall consist o! either concrete cast'in'situ ormasonry built in cement mortar. The anchors shall be e$tended to the !irm soil o! the trench side. Thesha e o! the anchors will de end on the #ind o! s ecials used. They shall be s read to the !ull widtho! trench and carried &ertically by the side and o&er the s ecial to about 1* cm. The bearing area onsides o! the trench shall be ro ortional to the thrust and to the bearing ca acity o! the sides o! thetrench 6


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SECTION 1313.*.1.%. The width o! the trench shall be the nominal diameter o! the i e lus (0 cm but it shall notbe less than ** cm in case o! all #inds o! soils e$cluding roc# and not less than 1 metre in case o!roc#.13.*.%. La."n# - Any de&iation either in lan or ele&ation less than 11.%* degrees shall be e!!ected bylaying the straight i es around a !lat cur&e o! such radius that minimum thic#ness o! lead at the !aceo! the soc#et shall not be reduced below mm or the o ening between s igot and soc#et increasedbeyond 1% mm at any +oint. A de&iation o! about %.%* degree can be e!!ected at each +oint in this way.

At the end o! each day>s wor# the last i e laid shall ha&e its o en ends securely closed with awooden lug to re&ent entry o! water, soil, rats and any other !oreign matter into the i e.13.*.3. Lea, *a%l+e, &"n s '" $ "# lea, - 13.*.3.1 This ty e o! lead caul#ing is generally done in

ro&iding +oints in gas water and sewer lines where&er it is racticable to use cast lead caul#ing, butnot in case o! wet conditions.13.*.3.%. The a ro$imate de th and weights o! ig lead !or &arious diameters o! C. I. i es ands ecials shall be as gi&en in Table 1(.

Table 1( ead !or di!!erent si es o! i esNominal si e o! i e

mm.ead er +oint

Dg.@e th o! lead +oint

mm.

1 % 30 1. (*100 %.% (*1%* %. (*1*0 3.( *0%00 *.0 *0%*0 .1 *0300 -.% **3*0 .( **(00 /.* **(*0 1(.0 ***00 1*.0 0

00 1/.0 0-00 %%.0 0-*0 %*.0 0

Note:1. The "uantity o! lead gi&en in the table are on a&erage basis and a &ariation o! 10 ercent is

ermissible.%. 9e!ore i es are +ointed on large scale, three or !our sam le +oints shall be made and the a&erageconsum tion o! lead er +oint shall be got a ro&ed by the engineer.Only re"uired "uantity o! s un yarn shall be ut so as to gi&e the s eci!ied de th o! lead in the +oint.13.*.(. Lea, Ca%l+e, @&"n '" $ Lea, W&&l Yarn - This ty e o! lead caul#ing is generally donewhen it is incon&enient or dangerous to use molten lead !or +oints, !or e$am le in cases such as

in&erted +oints or in wet trenches or in e$ce tional cases. In such cases the +oints shall be made withlead wool o! yarn. Caul#ing with lead wool or yarn shall howe&er be not carried without the riorermission o! engineer.

13.*.(.%. The a ro$imate weights and de ths o! lead wool or lead yarn re"uired !or each +oint o!&arious dia. o! C. I. i es and s ecials shall be as gi&en in Table 1*. Hust su!!icient "uantity o! s unyarn shall be ut so as to gi&e s eci!ied de th o! lead wool.

@&"n "n# -The s un yarn shall !irst be inserted and caul#ed into the soc#et as described under +ointing with ig lead. ead wool or yarn shall then be introduced in the +oint in strings not less than mm thic# and caul#ing shall be re eated with each turn o! lead wool or yarn. The whole o! the lead

13-22


23/104

SECTION 13wool or yarn shall be com ressed into a dense mass. The +oint shall then be !inally !inished !lush with!ace o! the soc#et.13.*.*. Flan#e, &"n sCast iron i es may be +ointed by means o! !langes cast on. The +ointing material used between!langes o! i es shall be com ressed !iber board or rubber o! thic#ness between 1.* mm to 3 mm.The !iber board shall be im regnated with chemically neutral mineral oil and shall ha&e a smooth andhard sur!ace. Its weight er m % shall be not less than 11% gm ? mm thic#ness.

Table 1*@iameter o! i eCast Iron 6mm7

)eight o! lead wool orlead yarn 6#g.7

@e th o! lead woolor lead yarn 6mm7

0 0. 0 1/100 0./0 1/1%* 1.%* %01*0 1. 0 %3%00 %.0* %3%*0 %./* %*300 3.*0 %*3*0 (. * %/(00 *.-0 31(*0 .-0 3%*00 .30 33

00 13.00 3*-00 11. 0 3-*0 13. 0 3

00 1*.(0 (0/00 1 . 0 (0

Note: An allowance o! !i&e er cent &ariation in the s eci!ied weights and de ths is ermissible.13.*.*.%. Each bolt should be tightened a little at a time ta#ing care to tighten diametrically o osite

bolts alternati&ely. The ractice o! !ully tightening the bolts one a!ter another shall not be allowed.13.*.*.3. Se&eral ro rietary !le$ible +oints are a&ailable !or +ointing cast iron i es and these may beused with the s eci!ic a ro&al o! the authority, howe&er, they shall be used strictly in accordance withthe manu!acturer>s instructions.13.*.*.(.


24/104

SECTION 13

13. . SPECIFICATIONS FOR LAYING AN: @OINTING OF G< I< PIPES (E TERNAL WORKThe s eci!ications described in 13.3 shall a ly, as !ar as ossible.13. .1. Tren*$es - The gal&ani ed iron i es and !ittings shall be laid in trenches. The widths andde ths o! the trenches !or di!!erent diameters o! the i es shall be as in Table 1 .

Table 1@ia o! i e

6mm7)idth o! trench

6cm7@e th o! trench

6cm71* to *0 30 0* to 100 (* -*

At +oints the trench width shall be widened where necessary. The wor# o! e$ca&ation and re!illing shallbe done true to line and gradient in accordance with general s eci!ications !or earth wor# in trenches.)hen e$ca&ation is done in roc#, it shall be cut dee enough to ermit the i es to be laid on acushion o! sand minimum -.* cm dee .13. .%. C% "n# an, T$rea,"n# ' )here the i es ha&e to be cut or re'threaded the ends shall becare!ully !iled out so that no obstruction to bore is o!!ered. The end o! the i es shall then be care!ullythreaded con!orming to the re"uirements o! IS: **('1/ * with i e dies and ta es in such a manneras will not result in slac#ness o! +oints when the two ieces are screwed together. The ta s and diesshall be used only !or straightening screw threads which ha&e become bent or damaged and shall not

rocedure may not result in a water tight +oint. The screw threads o! i es and !itting shall berotected !rom damage until they are !itted.

13. .3. @&"n "n# -The i es shall be cleaned and cleared o! all !oreign matter be!ore being laid. In +ointing the i es, the inside o! the soc#et and the screwed end o! the i es shall be oiled and rubbedo&er with white lead and a !ew turns o! s un yarn wra ed round the screwed end o! the i e. Theend shall then be screwed in the soc#et, Tee etc. with the i e wrench. Care shall be ta#en that all

i es and !ittings are ro erly +ointed so as to ma#e the +oints com letely water tight and i es are#e t at all times !ree !rom dust and dirt during !i$ing. 9urr !rom the +oints shall be remo&ed a!terscrewing. A!ter laying, the o en ends o! the i es shall be tem orarily lugged to re&ent access o!water, soil or any other !oreign matter.13. .(. T$r%s Bl&*+s (F"#< - In case o! bigger diameter i es where the ressure is &ery high,thrust bloc#s o! cement concrete 1:%:( 61 cement : % coarse sand : ( graded stone aggregate o! %0mm nominal si e7 o! ade"uate si e and sha e shall be ro&ided on all bends to transmit the hydraulicthrust to the ground, s reading it o&er a su!!icient areas de ending u on the ty e o! soil met with.13. .*. Pa"n "n#- The i es shall be ainted with two coats o! anticorrosi&e bitumastic aint o!a ro&ed "uality.13. . . Tes "n# & @&"n s - The i es and !ittings a!ter they are laid and +ointed shall be tested tohydraulic ressure o! Dg?s". cm. 6 0 meter7. The i es shall be slowly and care!ully charged with

water allowing all air to esca e and a&oiding all shoc# or water hammer. The draw o!! ta s andsto coc#s shall then be closed and s eci!ied hydraulic ressure shall be a lied gradually. 4ressuregauge must be accurate and re!erably should ha&e been re'calibrated be!ore the test. The test um

ha&ing been sto ed, the test ressure should be maintained without loss !or at least hal! an hour.The i es and !ittings shall be tested in sections as the wor# o! laying roceeds, ha&ing the +ointse$ osed !or ins ection during the testing. 4i es or !ittings which are !ound lea#ing shall be re lacedand +oints !ound lea#ing shall be redone, without e$tra ayment.13. .-. Tren*$ F"ll"n# - The i es shall be laid on a layer o! -.* cm sand and !illed u to 1* cm abo&ethe i es. The remaining ortion o! the trench shall then be !illed with e$ca&ated earth as described.The sur lus earth shall be dis osed o!! as directed.

13-24


25/104

SECTION 1313. . . eas%re0en s - The lengths shall be measured in running metre correct to a cm !or the!inished wor#, which shall include ;. I. i e and ;. I. !ittings such as bends, tees, elbows reducers,crosses, lugs, soc#ets, ni les and nuts, but e$clude brass o! gun metal ta s 6coc#s7, &al&es, leadconnection i es and shower rose. All i es and !ittings shall be classi!ied according to theirdiameters, method o! +ointing and !i$ing substance, "uality and !inish. In case o! !ittings o! an e"ualbore, the i e shall be described as including all cuttings and wastage. In case o! !ittings o! une"ualbore, the largest bore shall be measured. @igging and re!illing o! trenches shall either be measuredse arately as s eci!ied in the a ro riate clauses o! e$ca&ation and earth wor# or clubbed with mainitem.13. ./. Ra e - The rate shall included then cost o! labour and materials in&ol&ed in all the o erationsdescribed abo&e. The rate shall not include e$ca&ation in trenches, ainting o! i es and sand !illingall round the i es, unless otherwise s eci!ied.

13.-. SPECIFICATIONS FOR LAYING AN: @OINTING UNPLASTICISE: PVC PIPES (E TERNALWORK13.-.0. !an,l"n# an, s &ra#e - 2n lastici ed 4BC i es are light in weight material. Geasonablecare shall be ta#en in handling and storage o! these to re&ent damages. On no account the i es

shall be dragged along the ground. 4i es shall be gi&en ade"uate su ort at all times. They shall notbe stac#ed in large iles, es ecially under warm tem erature conditions as the bottom i es maydistort, thus gi&ing rise to di!!iculty in i e alignment and +ointing.


26/104

SECTION 136in+ection moulded soc#et or cou let7 shall be mar#ed on the i e and chec#ed how !ar the i e endcould be inserted into the !itting soc#et. Attem t shall be made to ush the i e to the mar#eddistance, i! not ossible it shall at least be ushed !or %?3 o! this distance.


27/104

SECTION 13617 )ith s igot and soc#et, or 6%7 )ith se arate collar ieces ha&ing two rubber rings, one at eitherend.13.-.3. Cr&ss"n# R&a, &r :ra"n (F"#< 1D - )here the i e line crosses a road or a drain, it shall bethrough C. I. or GCC i e.13.-.(. S% &r s &r Valve an, !.,ran - Bal&e and hydrant tees shall be su orted as shown in


28/104

SECTION 13


29/104

SECTION 13Table 1-

@ia. o! 4i e 6mm7 8ori ontal length 6 7 Bertical length 6 71* % %.*%0 %.* 3%* %.* 33% %.* 3(0 3 3.**0 3 3.*

* 3.* *0 3.* *

2nions will be ro&ided to !acilitate connections additions and alterations as well as !or maintenanceand !or change o! i es. The locations where unions are to be ro&ided will be decided with riorwritten a ro&al o! the engineer.13. .%. eas%re0en s - The lengths shall be measured in running metre correct to a cm !or the!inished wor#, which shall include ;. I. i e and ;. I. !ittings such as bends, tees elbows, reducers,crosses, lugs, soc#ets, ni les and nuts, but e$clude brass or gun metal ta s 6coc#s7, &al&es,unions, lead connection i es and shower rose. All i es and !ittings shall be classi!ied according totheir diameters, method o! +ointing and !i$ing substance, "uality and !inish. In case o! !ittings o! ane"ual bore the i e shall be described as including all cuttings and waste. In case o! !ittings o!une"ual bore, the largest bore shall be measured. 4i es laid in trenches 6or without su orts7 and

i es !i$ed to walls, ceilings, etc. with su orts shall be measured se arately.13. .3. Ra e - The rate shall include the cost o! labour and material in&ol&ed in all the o erationsdescribed abo&e. The rate shall include the cost o! cutting holes in walls and !loors and ma#ing goodthe same. This shall not howe&er, include concealed i e wor# in which case cutting o! chase andma#ing good shall be aid se arately. It shall not include ainting o! i es and ro&iding slee&es,unless s eci!ied otherwise. It will also not include union which shall be aid !or se arately.

13./. SPECIFICATION FOR LAYING AN: @OINTING PVC PIPES (INTERNAL WORK13./.1. Cla0 "n# - The i es shall be laid and clam ed to wooden lugs !i$ed abo&e the sur!ace o!the wall, as shown in


30/104

SECTION 13inside the ;. I. !itting. I! howe&er greater ro+ection is desired, same shall be achie&ed by +oining ashort iece o! a ;. I. i e 6Ni le7 as shown in


31/104

SECTION 13

13.10. SPECIFICATIONS FOR AKING CONNECTION OF G< I< :ISTRIBUTION BRANC! WIT!G< I< AIN13.10.1. Prel"0"nar. W&r+ - A it o! suitable dimensions shall be dug at the oint where theconnection is to be made with the main and earth remo&ed u to 1* cm below the main. The !low o!water in the water main shall also be disconnected by closing the sluice or wheel a$is &al&es on themains.13.10.%. a+"n# C&nne* "&n -


32/104

SECTION 1313.1%.%. Ra e - Gate shall include the cost o! all materials and labour in&ol&ed in all the o erationsdescribed abo&e.

4.B.C. 4I4IN;


33/104

SECTION 13

13.1(. SPECIFICATIONS FOR FI ING FERRULES13.1(.1.


34/104

SECTION 13


35/104

SECTION 1313.1 .%. Ear $ W&r+- The e$ca&ated earth shall be dis osed o!! as directed by the Engineer.13.1 .3. Re"n &r*e, Ce0en C&n*re e W&r+ - The ost shall be made o! cement concrete 1:%:( 61cement: % coarse sand : ( graded stone aggregate 1%.* mm nominal si e7 and rein!orced with ( Nos.10 mm dia. bars at corners. Nos. s"uare stirru s o! mm diameter bars shall be ro&ided !or#ee ing the &ertical rein!orcement in osition.13.1 .(. F"n"s$"n# - The G. C. C. ost shall be lastered with mm thic# cement laster 1:( 61cement : ( !ine sand7 on all the e$ osed sur!aces and u to a de th o! 1* cm below ground le&el. The

lastered sur!ace shall be !inished with a !loating coat o! neat cement.13.1 .*. eas%re0en s - The G. C. C. osts shall be enumerated.13.1 . . Ra e - The rate shall include the cost o! labour and materials re"uired !or all the o erationsdescribed abo&e including ro&iding and embedding o! the i e in the ost.

13.1/. SPECIFICATIONS FOF CONSTRUCTING ASONRY PILLAR FOR !Y:RANT (FIG< 1113.1/.1 The section o! the illar shall be one and hal! bric# s"uare or one bric# s"uare, as s eci!ied.The height o! the illar abo&e ground shall be 110 cm.13.1/.%. Ear $ '&r+- The e$ca&ated earth shall be dis osed o!! as directed by the Engineer.13.1/.3. C&n*re e '&r+ -


36/104

SECTION 13


37/104

SECTION 13

Table 1/Net Ca acity

6 iters7Internal si e 6 9 h7

6cm7300 litres -0 $ -0 $ -*

00 litres /0 $ /0 $ /0/00 litres 10* $ 10* $ /01%00 litres 1%0 $ 1%0 $ 1001(00 litres 1%0 $ 1%0 $ 11*1 00 litres 1%0 $ 1%0 $ 1%01 00 litres 130 $ 130 $ 1%*

)here more than one tan# is to be ro&ided at one lace, a larger tan# o! combined net ca acity maybe built with suitable internal artitions to achie&e an economical design.13.%1.3. All the !ittings e$ce t !loat &al&e and mos"uito roo! cou ling shall be !i$ed duringconstruction o! slab and side walls as the wor# roceeds and no subse"uent iercing o! tan# slab andwalls shall be ermitted.13.%1.(. B& &0 Sla) - The bottom slab o! the tan# shall be o! rein!orced cement concrete 1:1:*:3 61cement : 1:* coarse sand : 3 stone aggregate %0 mm nominal si e7. This shall be su orted on

structurally ade"uate su orts o! bric# masonry walls ? rein!orced cement concrete beams ? or rolledsteel sections and shall be gi&en a mild slo e towards scour i e outlet. The slab thic#ness shall be10 cm !or si es gi&en abo&e, rein!orcement details shall be as gi&en in


38/104

SECTION 13&s %" & r&& *< "< $"n#e, *&ver - Each tan# shall be ro&ided with (%* mm dia. standard

mos"uito roo! C. I. hinged co&er weighing .1* #g. and !rame weighing . 0 #g. with loc#ingarrangement, as shown in


39/104

SECTION 1313.%%.%. an% a* %re an, "n"s$ - The tan#s shall be manu!actured by rotational moulding rocess.Each tan# and the manhole lid shall be single iece ha&ing arrangement !or !i$ing and loc#ing themanhole lid with the tan#s. E$cess material at the mould arting line and near the to rim shall beneatly cut and !inished. The internal and e$ternal sur!ace o! the tan#s shall be smooth, clean and !ree!rom didden internal de!ects li#e air bubbles, it and metallic or other !oreign material inclusion.Ca acity o! the tan#, minimum weight o! the em ty tan# 6without manhole lid7 and the manu!acturebrand name shall be embossed on the to sur!ace o! the tan# near manhole.13.%%.3. S$a e S"4e an, Ca a*" . - The tan# shall be cylindrical &ertical with closed to ha&ing amanhole. @iameter and height o! the tan# o! &arious ca acities shall be as er manu!acturer>ss eci!ications and a clearance o! 3 er cent shall be ermitted on these dimensions. Ca acity o! thetan# or u to the bottom o! the inlet location whiche&er is less. Ca acity o! the tan# shall be s eci!ied.E$tra ca acity i! any shall be ignored.13.%%.(. We"#$ an, Wall T$"*+ness2

inimum weight o! the em ty tan# 6e$clusi&e o! manhole lid !ittings7 and the minimum wall thic#nesso! to , bottom and sides shall be s eci!ied in Table %0. )all thic#ness shall be chec#ed beyond 1*0mm o! the edge where the direction the lane o! tan# sur!ace changes.13.%%.*. Ins alla "&n an, F" "n#s2

The !lat base o! the tan# shall be !ully su orted o&er its whole bottom area on a durable rigid !lat andle&el lat!orm su!!iciently strong to stand without de!lection the weight o! the tan# when !ully !illed withwater. @e ending u on the ca acity and location tan#s may be suitably anchored as er thedirections o! the Engineer.


40/104

SECTION 131 . 1*000 11.* **0.01/. %0000 13.% 1(.0

13.%%. . Ra es - The rate shall include the cost o! the tan#, manhole lid, carriage and deli&ery at thelace s eci!ied. 8oisting, installation, !ittings, lat!orm and anchoring shall be ayable se arately.

13.%3. SPECIFICATIONS FOR R< C< C< STORAGE TANKS - These tan#s shall be cast in situ,circular ? rectangular in sha e and %-0 and *(0 litres ca acity. These shall be as er a ro&ed

drawing.The mi$ o! GCC shall be 1:1.*:3 !or walls and bottom slab and 1:%:( !or to slab. The s eci!ication !orGCC shall be as rescribed. The to slab shall ha&e the co&er o! % mm thic# . S. sheet 3* mm $ 3*mm si e ha&ing !rame o! angle iron %0$%0$* mm si e. The detailed s eci!ications shall be as

rescribed under steel wor#.13.%3.%. F" "n#s - The !lat base o! the tan# shall be !ully su orted o&er its whole bottom area on adurable rigid !lat and le&el lat!orm su!!iciently strong to stand without de!lection the weight o! the tan#when !ully !illed with water. @e ending u on the ca acity and location tan#s may be suitably anchoredas er the directions o! the Engineer.


41/104

SECTION 13c7 @e th o! soc#et 647 617 2 to and including 00

mm *

6%7 O&er 00 mm and u toand including 1000 mm

10

Note:17 < is the caul#ing s ace o! the +oint in millimeters and is e"ual to / L 0.003 @N.%7 The +ointing tolerance a licable to rubber +oints 6mechanical or ush in +oints7 shall be as

s eci!ied by their manu!acturer and shall be within the tolerances s eci!ied abo&e.T&leran*e &n T$"*+ness2

@imensions Tolerance in mma7 )all thic#ness ' 61 L 0.0* e7b7


42/104

SECTION 1313. /. %.0 0.(%- 0.(301(.0 13.% %.3* 0. -- 0. 1

10 1-.* 1 .- %.3* 0. 0. /%1* %1. %1.0 %. * 1.%- 1.%%0 %-.3 % .* %. * 1. ( 1. *%* 3(.% 33.3 3.%* %.*1 %.*33% (%./ (%.0 3.%* 3.%3 3.%(0 ( . (-./ 3.%* 3.-% 3.-*0 0. */.- 3. * *.%( *.31

* - . -*.3 3. * . / . 10 /./ .0 (.0* . . *

100 11*.0 113.1 (.*0 1%.(0 1%.-01%* 1(0. 13 .* (. * 1 .*0 1-.001*0 1 .* 1 3./ (. * 1/. 0 %0.%0

T&leran*e "n T$"*+ness an, We"#$ ernal W&r+Outside

@iameter Toleranceon outside

dia

)all thic#ness !or wor#ing ressure%.*#g!?cm% (#g!?cm% #g!?cm% 10#g!?cm%in a$. in a$. in a$. in a$.

1 L0.3 1.1 1.*%0 L0.3 1.1 1.*%* L0.3 1.( 1.3% L0.3 1. %.%(0 L0.3 1.( 1. %.% %.-*0 L0.3 1.% 1. 1.- %.1 %. 3.3

3 L0.3 1.* 1./ %.% %.- 3.* (.1-* L0.3 1. %.% %. 3.1 (.% (.//0 L0.3 1.3 1.- %.1 %. 3.1 3.- *.0 *.-

110 L 0.( 1. %.0 %.* 3.0 3.- (.3 .1 -.01%* L0.( 1. %.% %./ 3.( (.3 *.0 ./ -.-1(0 L0.* %.0 %.( 3.% 3. (. *.* -.- .-1 0 L0.* %.3 %. 3.- (.3 *.( .% . /./1 0 L0. %. 3.1 (.% (./ .1 -.0 /./ 11.1%00 L0. %./ 3.( (. *.3 . -.- 11.0 1%.3%%* L0.- 3.3 3./ *.% .0 -. . 1%.( 13./%*0 L0. 3. (.% *.- .* .* /. 13. 1*.(% 0 L0./ (.1 (. .( -.3 /.* 13.- 1*.( 1-.%31* L1.0 (. *.3 -.% .% 13.- 1%.0 1-.3 1/.3

Anne$ure 13.A.*PROCE:URE FOR PRESSURE TEST

6Clause 13.*. 71. Each &al&ed section o! the i e shall be slowly !illed with water and all air shall be e$ elled !rom

the i e through hydrants and blow'o!!. I! these are not a&ailable at high laces, necessary ta ingmay be made at oints o! highest ele&ation be!ore the test is made and lugs inserted a!ter the testsha&e been com leted.%. I! the trench has been artially bac#'!illed the s eci!ied ressure based on the ele&ation o! thelowest oint o! the line or section under test and corrected to the ele&ation o! the test gauge, shall bea lied by means o! a um connected to the i e in a manner satis!actory to the engineer. Theduration o! the test shall not be less than * minutes.

3. E>a0"na "&n %n,er Press%re2 All e$ osed i es, !ittings, &al&es, hydrants and +oints should becare!ully e$amined during the o en'trench test. )hen the +oints are made with cement and show

see age or slight lea#age, such +oints shall be cut out and re laced as directed by the authority. Anycrac#ed or de!ecti&e i es, !ittings, &al&es or hydrants disco&ered in conse"uence o! this ressure test

13-43


44/104

SECTION 13shall be remo&ed and re laced by sound material and the test shall be re eated until satis!actory tothe engineer.(. I! the trench has been bac#'!illed to the to , the section shall be !irst sub+ected to water ressurenormal to the area and the e$ osed arts shall be care!ully e$amined. I! any de!ects are !ound, theyshall be re aired and the ressure test re eated until no de!ects are !ound. The duration o! the !inal

ressure tests shall be at least one hour.Pr&*e,%re &r Lea+a#e Tes1. ea#age is de!ined as the "uantity o! water to be su lied into the newly laid i e, or any &al&ed

section thereo!, necessary to maintain the s eci!ied lea#age test ressure a!ter the i e has been!illed with water and the air e$ elled.

No i e installation shall be acce ted until the lea#age is less than the number o! cm3?h determinedby the !ormula

N $ @ $ 4" l K ''''''''''''

3.3)here " l K the allowable lea#age in cm 3?h.

N K number o! +oints in the length o! the i e line.

@ K diameter in mm, and4 K the a&erage test ressure during the lea#age testing #g?cm %.

=< Var"a "&n r&0 Per0"ss")le Lea+a#e2 Should any test o! i e laid in osition discloses lea#agegreater than that s eci!ied in ara * the de!ecti&e +oints shall be re aired until the lea#age iswithin the s eci!ied allowance.

Anne$ure 13'A. LIST OF BUREAU OF IN:IAN STAN:AR:S CO:ES (IS

Sl. IS. No. Sub+ect1 % /'1/ / S eci!ication !or 33 grade ordinary 4ortland cement

6( th Ge&ision7 6Amendments 37% **('1/// @imensions !or i e threads where ressure tight +oints are re"uired on the

threads 63 rd re&ision7 6Gea!!irmed 1//073 -- '1/ ( S eci!ication !or co er alloy gate, and chec# &al&es !or water wor#s

ur oses 6( th re&ision7 6Amendments%7 6Gea!!irmed 1//07( --/'1//( S eci!ication !or water meters 6domestic ty e7 6* th re&ision7 6Amendments 37

6Gea!!irmed 1//17* - 0'1/ ( S eci!ication !or sluice &al&es !or water wor#s ur oses 6*0 to 300 mm si e7

6 th re&ision7 6Amendments 37 6Gea!!irmed 1//07- 1'1/ ( S eci!ication !or cast co er alloy screw down bib and sto &al&es !or water

ser&ices 63 rd re&ision7 6Amendment 17 6Gea!!irmed 1//07- - %'1/-/ S eci!ication !or caul#ing lead 63 rd re&ision7 6Gea!!irmed 1//%7

/0/'1//% S eci!ication !or underground !ire hydrant, sluice &al&e ty e63rd re&ision7

/ 1%3/ 64art 17'%00(

S eci!ication !or mild steel tubes tubulars and other wrought steel !ittings,4art 1 mild steel tubes 6* th re&ision76Amendments 37 6Gea!!irmed 1/ *7.

/A 1%3/ 64art II7'1//%

S eci!ication !or mild steel tubes tubulars and other wrought steel !ittings,4art II mild steel tubulars and other wrought steel i e !ittings 63 rd re&ision76Amendments 17

10 1*3 '%001 S eci!ication !or centri!ugally cast 6s un7 iron ressure i es !or water gasand sewage 63 rd re&ision7 6Amendments %7 6Gea!!irmed 1//37

11 1*3-'1/- S eci!ication !or &ertically cast iron ressure i es !or water, gas andsewage 61 st re&ision7 6Amendments *7 6Gea!!irmed 1//17

13-44


45/104

SECTION 131% 61*3 '1//37M S eci!ication cast iron !ittings !or ressure i es !or water, gas and

sewage, 63 rd re&ision7 su erceding IS 1*3 64arts 1 to %(713 1*/%' %003 S eci!ication !or Asbestos cement ressure i es 63 rd re&ision71( 1-03'1/ / S eci!ication !or co er alloy !loat &al&es 6hori ontal lunger ty e7 !or water

su ly !ittings 63 rd re&ision71* %** 64art I 7'

%00(S eci!ication !or &itreous sanitary a liances &itreous China7 4art I s eci!icre"uirements !or shower rose 61 st re&ision7 6Gea!!irmed 1//07

1 % /%'%000 S eci!ication !or !errules !or water ser&ices 6% nd re&ision7 6Amendment 171- %/0 '1/ ( S eci!ication !or sluice &al&es !or water wor#s ur oses 63*0 to 1%00 mm

si e7 63rd re&ision7 6Amendments 37 6Gea!!irmed 1//071 (-3 '1/ 8ot'di inc Coatings on mild steel tubes 61 st re&ision7 6Amendment 17

6Gea!!irmed 1//%71/ (/ ('1//* S eci!ication !or high density olyethylene i es !or otable water su lies,

sewage and industrial e!!luents 63 rd re&ision7%0 ( %-'1/ 3 Electro lated coatings o! nic#el and chromium on co er and co er alloys

61st re&ision7 6withdrawn7%1 (/ *'%000 S eci!ication !or un lasticised 4BC i es !or otable water su lies 6% nd

re&ision7 6Amendment 17%% *3 %'1/ * Gubber sealing rings !or gas mains, water mains and sewers 61 st re&ision7

6Amendment 17 6Gea!!irmed 1//(7%3 */13 5 %003 ethod o! test !or asbestos cement roducts 61 st re&ision7%( /- % 5 1//( S eci!ication !or olyethylene !loats 6s herical7 !or !loat &al&es.

Anne$ure 13'A.-A::ITIONAL SPECIFICATIONS FOR WATER SUPPLY WORKS

6E$tract !rom S4 % 6S!T7:1//- o! 9IS7GeneralThis art deals with general re"uirements o! lumbing connected to ublic water su ly andinstallation o! water su ly system consisting o! water ser&ice i e, water distribution i e, connecting

i es, !ittings, &al&es and all related a urtenances in or ad+acent to buildings.The water su ly re"uirements o! buildings and design o! distribution systems shall be as er IS:11-% '1//3 and IS: %0 *'1/ 3 res ecti&ely.

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SECTION 13

Note: The illustration is not intended to indicate recommended ositions o! underground storage tan#6where ro&ided7, i es, etc., and this will de end on local situation.


47/104

SECTION 13

i es should not be laid on hot sur!aces or in too close a ro$imity to the hot water i es. Care shouldalso be ta#en to a&oid locations where they are li#ely to be e$ osed to atmos here charged with coalgas.CONVEYANCE AN: :ISTRIBUTION OF WATER WIT!IN T!E PRE ISESBas"* Pr"n*" lesSome o! the details o! lumbing which are considered necessary !or ro erly designed, acce tablyinstalled and ade"uately maintained lumbing systems are gi&en below !rom 6a7 to 6#7. Though thedetails o! a construction may &ary, the basic sanitary and sa!ety rinci les are the same, and theymerit serious study.


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SECTION 13 +7 No boiler !or generating steam or closed boilers o! any descri tion or any machinery shall be

su lied direct !rom a ser&ice or su ly i e. E&ery such boiler or e"ui ment shall be su lied!rom a !eed cistern.

General re %"re0en s & " e '&r+The !ollowing general rinci les shall com ly in the layout and lanning o! the i e wor#.C&00%n"*a "&n P" esa7 E&ery remises shall ha&e its own se arate communication i e !or su ly o! water to the

Authority. In the case o! a grou or bloc#s o! remises, the same communication i e may su lywater to more than one remises.

b7 The communication i e between the water main and the sto coc# at the boundary o! theremises shall be laid by the Authority.

c7 Connection u to *0 mm dia may be made on the water main by means o! screwed !errules,ro&ided the si e o! the connection does not e$ceed one'third that the si e o! the water main. In

all other cases, the connection shall be made by a T 5branch o!! the water main.d7 As !ar as ossible, the communication i e and the underground ser&ice i e shall be laid at right

angles to the main and in a ro$imately straight lines to !acilitate location !or re airs.e7 E&ery communication i e shall ha&e a sto coc# and meter inserted in it. The waterway o! such

!itting shall not be less than the internal sectional area o! the communication i e and the !ittingsshall be located within the remises at a cons icuous lace accessible to the Authority whichshall ha&e e$clusi&e control o&er it.

C&ns%0er P" esa7 No consumer i e shall be laid in the remises to connect the communication i e without the

ermission o! the Authority.b7 The consumer i e within the remises shall be laid underground with a suitable co&er tosa!eguard against damage !rom tra!!ic and e$tremes o! weather.c7 To control the branch i e to each se arately occu ied art o! a building a sto &al&e shall be !i$edto minimi e the interru tion o! su ly during re airs. All such sto &al&es shall be !i$ed in accessible

ositions and ro erly rotected. To ro&ide !or drin#ing or culinary ur oses, direct ta s shall bero&ided on the branch i es connected directed to the consumer i e. In case o! multi'storiedbuildings, down ta#e i es shall be su lied !rom o&erhead tan#s.d7 4um s shall not be allowed on the ser&ice i e, as they cause a dro in ressure on the suctionside, thereby a!!ecting the su ly to the ad+oining ro erties. In cases where um ing is re"uired, a

ro erly rotected storage tan# o! ade"uate ca acity shall be ro&ided to !eed the um .e7 No direct boosting 6by booster um s7 shall be allowed !rom the ser&ice i es 6communication andconsumer i es7.!7 Consumer i es shall be so designed and constructed as to a&oid air loc#s. @raining ta s shall be

ro&ided at the lowest oints !rom which the i ing shall rise continuously to the drain o!! ta s.g7 Consumer i es shall be so designed as to reduce the roduction and transmission o! noise asmuch as ossible.h7 Consumer i es in roo! s aces, un&entilated air s aces, under'!loors or in basements shall be

rotected against corrosion.i7 Consumer i e shall be so located that they are not unduly e$ osed to accidental damage andshall be !i$ed in such ositions as to !acilitate cleaning and a&oid accumulations o! dirt.

+7 All consumer i es shall be so laid as to ermit e$ ansion and contraction or other mo&ements.Pr&$")" e, C&nne* "&nsa7 A ser&ice i e shall not be connected to a distribution i e, since such connections may ermitbac# !low o! water !rom a cistern into the ser&ice i e, in certain circumstances, with subse"uentdamages o! contamination and de letion o! storage ca acity. It might result in i es and !ittings being

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SECTION 13sub+ected to ressure higher than that !or which they are designed and in !looding !rom o&er!lowingcisterns.b7 No i e !or con&eyance or in connection with water su lied by the Authority shall communicatewith any other rece tacle used or ca able o! being used !or con&eyance other than water su lied bythe Authority.c7 )ater storage tan#s are ro&ided no erson shall connect or be ermitted to connect any ser&ice

i e with any distribution i e.d7 No ser&ice i e shall be connected directly to any water closet or a urinal. All such i es shall be!rom !lushing cisterns which shall be su lied !rom storage tan#.e7 No ser&ice or su ly i e shall be connected directly to any hot water system or to any othera aratus used !or heating water other than through a !eed cistern thereo!.La."n# & " esServ"*e " esa7 Ser&ice i es less than *0 mm bore may be connected to mains by means o! a right angledscrewed down !errule o! non'!errous metal con!orming to IS % /% : 1/ /, but the !errule itsel! shall notbe more than %* mm bore.


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SECTION 13b7 Co er i ing shall be secured by co er or co er alloy cli s direct to wood wor#, or by similarbrac#et cli s built in to walls or screwed to lugs.c7 )rought iron and steel i ing shall be secured in a manner similar to that used !or co er i ing,e$ce t that the cli s shall be o! iron and steel.d7 4lastic i es should be secured and su orted in accordance with IS: - 3( 64art %7'1/-* and IS:- 3( 64art 37'1/-*.S a*"n# & F">"n# &r In ernal P" es -


51/104

SECTION 13*0 3 3.*

* 3.* *0 3.* *

100 ( *Cast iron *0 % %

0 %.* %.*100 %.* %.*

4lastic %0 0.-0 1.* times thehori ontal s acing

%* 0.-*3% 0. %*(0 0./-**0 0./-*

@OINTING OF PIPESWr&%#$ "r&n an, s eel s*re'e, " es - Screwed wrought iron or steel i ing may be +ointed withscrewed and soc#eted +oints. Care shall be ta#en to remo&e any burrs !rom the end o! the i es a!ter

Authority may be used together with a grummet o! a !ew strands o! !ine yarn but the com ound shallcontain no red lead.

Any threads e$ osed a!ter +ointing shall be ainted, or in case o! underground i ing thic#ly coatedwith bituminous or other suitable com osition to re&ent corrosion. Screwed wrought iron or steel

i ing may also be +ointed with screwed !langes.P&l.e $.lene an, Un las "*"4e, PVC P" es - These i es shall be +oined in accordance with therecommendations o! IS: - 3( 64art %7 '1/-* and IS: - 3( 64art 37'1/-* res ecti&ely.As)es &s Ce0en P" es - Asbestos cement i es are +oined with !le$ible +oints su lied by themanu!acturer.Lea, P" es - ead and lead alloy i es shall be +oined with wi ed solder +oints or by other suitablemethods. ead and lead alloy i ing shall be +ointed to cast iron, wrought iron, steel or co er i ingby the use o! co er alloy screwed unions or !errules.

C& er P" es - Screwed co er i ing shall be +ointed with screwed co er'alloy !ittings a!tertreating the clean screw threads with raw linseed oil or other suitable +ointing com ound. Alternati&ely,the screw threads o! the i e and !ittings may be tinned, and the +oint heated to the melting oint o!the solder when being screwed.a7 4lain co er i ing shall be +ointed with com ression 6mani ulati&e or non'mani ulati&e7 or withca illary +oints in each case using co er'alloy !ittings, or by welding. Only mani ulati&e com ression

+oints, that is, +oints in which the i e ends are !langed, belted or swaged, are suitable !or use with!ully annealed co er i ing.b7 In the case o! the ca illary +oint, the i e and the interior o! the soc#et o! the !itting shall be cleanedwith steel wool, !lu$ing and !itted together and the +oint heated to +ust abo&e melting oint o! thesolder, which is either ro&ided in the !itting or is touched into the +oint with a solder stic#, and whichthen !lows by ca illary to !ill the +oint s ace. I! the i e is o! !ully annealed co er, its ends shall bemade truly round be!ore +ointing.c7 Co er i ing may be autogenous welded or bron e welded, the latter gi&ing the stronger +oint.Co er to be welded shall be =deo$idi ed co er> and not =tough itch co er>.d7 Co er i ing o! small diameter shall be +ointed to cast iron, wrought iron or steel i ing by the useo! co er'alloy screwed unions or !errules.


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SECTION 13Clean"n# an, ,"s"n e* "&n & $e s% l. s.s e0 - All water mains, communication i es, ser&iceand distribution i es used !or water !or domestic ur oses shall be thoroughly and e!!icientlydisin!ected be!ore being ta#en in to use and also a!ter e&ery ma+or re air. The method o! disin!ectionshall be sub+ect to the a ro&al o! the Authority.Similarly storage tan#s and down ta#e distribution i es shall also be disin!ected.Ins e* "&n es "n# an, 0a"n enan*e - Ins ection, testing and maintenance shall be according to IS:%0 * '1/ 3.Re %"re0en s & & $er '&r+San" ar. Ins alla "&ns - The selection, installation and maintenance o! sanitary a liances shall beaccording to IS: %0 ('1//3.Pl%0)"n# Ins alla "&ns "n %l "-s &re.e, B%"l,"n#s - 4lumbing in multi'storeyed buildings shallcon!orm to IS: 1%1 3 64art 17'1/ -.:&0es "* !& Wa er Ins alla "&ns - This shall con!orm to IS: -** '1/-(.

Anne$ure 13'A. SPECIFICATIONS FOR LOW :ENSITY POLYET!YLENE PIPES FOR POTABLE

WATER SUPPLIES 6E$tract o! IS: 30- '1/ *71. S*& e1.1. This standard lays down re"uirements !or low density blac# olyethylene i es o! outsidediameters u to 1(0 mm !or use in otable water su lies.M Code o! ractice !or lastics i e wor# !or otable water su lies 64art %7 aying and +ointing

olyethylene 64E7 ies.%. Class" "*a "&n & P" es%.1. The i es shall be classi!ied by ressure ratings 6wor#ing ressures at %- C7 as !ollows:

Class o! i es )or#ing ressureClass 1 0.%* a

Class % 0.(. aClass 3 0. . aClass ( 1.0 a

Note: The abo&e i es are recommended !or water tem erature u to L 3 C. the i es can also beused u to a tem erature o! ' (0 C. The recommended ma$imum wor#ing stress !or the material at%0 C in i es !orm is 3.% a !or *0 years o! li!e. The cree ru ture o! the i e diminishes with theincrease in tem erature abo&e %0 c and, there!ore, the wor#ing ressure should be modi!ied as gi&enin


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SECTION 13


54/104

SECTION 13(.1.%. The wall thic#ness shall be measured with a dial &ernier ? ball ended micrometer.(.1.3. The resulting dimensions shall be e$ ressed to the nearest 0.1mm.Note: In case o! dis ute the dimensions shall be measured a!ter conditions the i es at %- Q 1 C !or (hours.

Table 1 @imensions o! low density olyethylene i es 6Clause (.1.7 All dimensions in millimeters.

Out sidediamete

r

Tolerance onoutside

diameter

)ell thic#ness !or wor#ing ressuresClass I

60.%* a7Class %

60.( a7Class 3

60. a7Class (

61.0 a7in a$ in a$ in a$ in a$

10 L0.3 ' ' ' ' ' ' ' '1% L0.3 ' ' ' ' ' ' %.0 %.(1 L0.3 ' ' ' ' ' ' %.- 3.%%0 L0.3 ' ' ' ' %.% %.- 3.3 3./%* L0.3 ' ' ' ' %.- 3.% (.% (./3% L0.3 ' ' %.( %./ 3.( (.0 *.3 .1(0 L0.3 ' %.3 3.0 3.* (.3 *.0 . -.**0 L0.( 1./ %./ 3.- (.3 *.3 .1 .3 /.(

3 L0.* %.( 3.* (.- *.( .- -. 10.( 11.--* L0. 3.0 (.% *.* .3 .0 /.0 ' '/0 L0.- (.3 *.0 . -.* /. 10. ' '

110 L0. *.% .0 -.* /.% 11.- 13.1 ' '1%* L1.% *./ .- /.% 10.( ' ' ' '1(0 L1.3 . -.* 10.3 11. ' ' ' '

*. V"s%al a earan*e*.1. The internal and e$ternal sur!aces o! the i es shall be smooth, clean and !ree !rom groo&ing andother de!ects. The ends shall be cleanly cut and shall be s"uare with the a$is o! the i e. Slightshallow longitudinal groo&es or irregularities in the wall thic#ness shall be ermissible ro&ided thewall thic#ness remains within the ermissible limits.

. Per &r0an*e re %"re0en s

.1. !.,ra%l"* *$ara* er"s "*s - )hen sub+ected to internal ressure cree ru ture test inaccordance with the rocedure gi&en in A endi$, C , the i e shall show no signs o! locali edswelling, lea#age or wee ing and shall not ru ture during the rescribed test duration. Thetem eratures duration o! test and stresses !or "uality and acce tance tests shall be as gi&en in Table .%.

Table % Ge"uirements !or internal ressure cree ru ture test.

Test Test tem eratureTest duration6minimum

holding time7Induced stress

C IN aRuality test %0 1 -.

Acce tance test -0 100 %./.%. Revers"&n Tes - A i e length o! %00 mm shall be laced hori ontally on a su ort in an air

o&en or a suitable li"uid bath at a tem erature o! 100 Q % C !or 0 minutes so that the dimensionalchanges in the i e section are not im eded. A!ter cooling to room tem erature, they dimensionalchange o! the i e section shall be measured in the longitudinal direction and the de&iation !rom theinitial length shall be calculated and stated in ercentage. The dimension shall not change by morethan 3 ercent in the longitudinal direction.

.3. Tens"le es - The tensile strength o! the material and elongation at brea# at %- Q 1 c !or di!!erentthic#ness o! the i es shall be as !ollows:

Thic#ness o! i e wall Tensile Strength Elongation at 9rea# min

* mm . * a 3*0 ercent

* mm . * a %00 ercent

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SECTION 13.3.1. Tes P"e*e - The test iece shall consist o! a dumb'bell unched !rom oints on the

circum!erence o! the i e /0 C a art. The sha e o! the test iece shall be as shown in


56/104

SECTION 131% 110

%0 110

%* 1%0

3% 1*0

(0 1 0

*0 %00 Abo&e *0 As agreed to between the

manu!acturer and the urchaser Note: The i es may also be su lied in coils o! diameters smaller than those recommended i! agreedto between the urchaser and the su lier. 8owe&er, the i es should be recoiled to a largerdiameter a!ter these are deli&ered.

.1.1. The end o! the i es shall be lugged or co&ered./. Sa0 l"n# an, Cr" er"a &r C&n &r0" ./.1. The sam ling rocedure to be ado ted and the criteria !or con!ormity shall be as gi&en in

A endi$ @.10. ar+"n#10.1. Each i e shall be indelibly mar#ed at inter&als o! not more than * m in colour as indicated in10.1.1. The mar#ing shall show the !ollowing.6a7 anu!acturer>s name trade mar# 6b7 Outside diameter6c7 Class o! i e , and6d7 9atch number.10.1.1. The in!ormation s eci!ied in 10.1 and 10.% shall be mar#ed in colour as indicated below !ordi!!erent classes o! i es:10.%. Each i e may also be mar#ed with the ISI Certi!ication ar#.Note: The 2se o! the ISI Certi!ication ar# is go&erned by the ro&ision o! the Indian StandardsInstitution 6Certi!ication ar#s7 Act and the Gules and Gegulations made there under. The ISI ar#on roducts co&ered by an Indian Standard con&eys the assurances that they ha&e been roduced tocom ly with the re"uirements o! that standard under a well de!ined system o! ins ection, testing and

"uality control which is de&ised and su er&ised by ISI and o erated by the roducer. ISI mar#edroducts are also continuously chec#ed by ISI !or con!ormity to that standard as a !uture sa!eguard.

Class o! i e colour

Class 1 Ged

Class % 9lue

Class 3 ;reen

Class ( ellow

A endi$ 'A:ETER INATION OF A I U VOLATILE ATTER IN CARBON BLACK

A'1. A ara %s A'1.1. Ele* r"* Cr%*")les / Ca able o! tem erature regulation o! Q %* C at /*0 C and e"ui edwith a thermocou le acti&ated indicating yrometer.

A'1.%. Pla "n%0 Cr%*")les - %* $ 3* mm A'1.3. Pe r" :"s$ - -* mm &

A'1.(. Oven - Electrically o erated air circulating ty e, ca able o! tem erature regulation o! Q 1 C at100 C.

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SECTION 13 A'1.*. Anal. "*al Balan*e - 8a&ing a sensiti&ity o! 0.1 g A'1. . desiccators A'%< Pr&*e,%re A'%.1. @ry * g o! the sam le in an air o&en at 100 C !or % hours. A.%.%. Ignite two latinum crucibles in the electric !urnace at /*0 Q %* C !or about 30 minutes. Coolto about %00 C an iron late and lace in the desiccate. )hen these attain the room tem erature,weigh them to the nearest 0.1. mg.

A.%. 3. 4lace 1 g o! dried carbon blac# in the weighed latinum crucible and close by ushing anotherweighed crucible lea&ing an air s ace not more than % mm.

A.%.(. Ignite the crucibles and contents in the electric !urnace !or e$actly - minutes at a tem eratureo! /*0 Q %0 C.

A.%.*. Gemo&e the crucible assembly to the desecrator, allow to cool to room tem erature and weighto the nearest 0.1mg.

A'.3. Calculation A'3.1. Calculate the ercentage o! &olatile matter as !ollows:Bolatile matter K loss o! mass 100 ercent.

ass o! sam le ta#en

Note: The loss o! &olatile matter during drying o eration is negligible.

A endi$ 9:ETER INATION OF TOLUENE E TRACT OF CARBON BLACK

9.1 . A ara %s9.1.1. E> ra* "&n T$"0)les - @ouble thic#ness, !at e$tracted9.1.%. S&>$le A ara %s9.1.3. S$all&' We"#$"n# :"s$ / *0 ml ca acity, o! borosilicate glass.9.%. Rea#en9.%.1. T&l%ene / Sul!ur !ree o! AG "uality

9.3. Pr&*e,%re9.3.1. 4lace * to g o! alleti ed carbon blac# or % to * com ressed !lu!!y blac# in a a er e$tractionthimble. Insert the thimble into the So$hlet e$tractor. easure *0 to 0 ml o! toluene into the so$hlet!las#.9.3.%. Assemble the So$hlet a aratus and e$tract !or %% hours.9.3.3. E&a orate successi&e small ortions o! the e$tract solution 6!iltered i! necessary7 nearly todryness in the re&iously cleaned, dried *0 ml shallow glass weighing dish. Ginse the e$traction !las#with toluene and add the washings to the weighing to the weighing dish. E&a orate the combinede$tracts on a hot 5 late to a &olume o! a ro$imately * to 10 ml and !inally the dish and contents inan o&en at 11* C until dry.9.3.(. Cool in a desecrator to room tem erature and weigh.9.(. Cal*%la "&n9.(.1. Calculate the toluene e$tract ercent, as !ollowsToluene e$tract K mass o! e$tract 100 ercent.

ass o! sam le

A endi$ CINTERNAL PRESSURE CREEP RUPTURE TESTS

C'1. GeneralC'1.1. The test shall be carried out not earlier than %( hours a!ter the i es ha&e been manu!actured.

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SECTION 13C.%. Tes s e*"0enC.%.1. a S ecimen o! i e ha&ing !ree length between the end !ittings e"ual to ten times the outsidediameter but neither less than %*0 mm not greater than -*0 mm shall be ta#en !or testing !rom each

i e to be tested:C'3. A ara %sC.3.1. E"ui ment which ermits the a lication o! a controlled internal hydraulic ressure to thes ecimen while being immersed in a thermostatically controlled water bath shall be used.C'@. Pr&*e,%reC'(.1. The i es shall be !itted with loc#ing lugs at both ends in such a way that the a$ial !orces dueto the internal ressure are transmitted to the i e. The i e shall remain !ree to mo&e in longitudinaldirection.C'.(.%. Through a closable o ening in one o! the loc#ing lugs, the i e shall be !illed with water atambient tem erature. It shall be ut in a water bath at the test tem erature 6 ermissible de&iation Q1 C7 and #e t in the bath !or 1 hour to ad+ust the tem erature.C'(.3. The ressure in the i e shall then be increased to the test ressure 6 7 gradually and withoutshoc#, re!erably within 10 to 30 seconds in the bath whose tem erature has been ad+usted inaccordance with C'.(.%. the ressure, with a ermissible de&iation o! Q %.* ercent ressure 6 7 shall

be calculated !rom the minimum dimensions and &alues o! induced stress gi&en in Table % as !ollows.PH = S

d 5swhere,

K test ressure in a,sK minimum wall thic#ness in mm,% K induced stress in a , andd K nominal outside diameter in mm.C'*. Assess0en & res%l sC.*.1. The s ecimen when tested as abo&e shall meet the re"uirements s eci!ied in .1. The tests

showing within a distance d !rom the end ca shall be disregarded and the test re eated.

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SECTION 13 A endi$ @

SCALE OF SA PLING AN: CRITERIA FOR CONFOR ITY@'1. L&@'1.1. All i es in a single consignment o! the same out side diameter, same wall thic#ness samelength and manu!actured essentially under similar conditions o! manu!acture shall constitute a lot.@'1.%.


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SECTION 13

@.3.%. Cr" er"&n &r C&n &r0" . - The lot shall be deemed to ha&e met the s eci!ication re"uirement!or re&ersion gi&en in .% i! not more than one de!ecti&e is !ound in the simulati&e sam leotherwise not.

@.(. !.,ra%l"* an, ens"le s ren# $ re %"re0en s@.(.1. The lot ha&ing the re"uirements gi&en in @.%.% and @'3 shall be !inally tested !or internal

ressure cree ru ture test s eci!ied in .1. and tensile strength test s eci!ied .3.@.(.1.1. !or this ur ose the number o! i es to be ta#en at random 6see @'%.1.1.7 !rom the lot shallbe according to table (.

Table ( Scale o! Sam ling !or 8ydraulic And Tensile Strength Ge"uirementsNumber o! i es in the lot Sam le si e

u to 100 %101 to 300 (

301 and abo&e@'(.1.%. The number o! i es selected !rom the lot according to @.(.1.1 shall be randomly di&ided intotwo e"ual sets. Each o! i es in the !irst set shall be tested !or internal ressure cree ru ture testaccording to .3.@.(.%. Cr" er"&n &r *&n &r0" . - The lot shall be declared as con!orming to the re"uirements o! thes eci!ication i! no !ailure occurs under @.(.1.% otherwise not.

Anne$ure 13'A./SPECIFICATIONS FOR PLASTICS PIPE WORK FOR POTABLE WATER SUPPLIES

PART 1 C!OICE OF ATERIALS AN: GENERAL RECO EN:ATIONS6E$tract o! 9IS: - 3( 6 art'I7'1/-*7

0.1. The re aration o! a code o! ractice !or lastics i e wor# !or otable water su lies was ta#enu to ma#e a&ailable com arati&e hysical, chemical and mechanical ro erties o! di!!erent ty es o!

lastic i es as well as to gi&en guidelines !or their selection !or di!!erent situations arising in racticalusage and also to recommend good ractices !or the installation and +ointing and testing o! such i e

systems.0.%. 4art I co&ers choice o! material and general recommendations.0.%.1. The other arts o! the standard are the !ollowing.

4art II aying and +ointing olyethylene 64E7 i es4art III aying and +ointing o! un lastici ed 4BC i es

0.3. In the !ormulation o! this standard due weightage has been gi&en to international co'ordinationamong the standards and ractices re&ailing in di!!erent countries in addition to relating it to the

ractice in the !ield in this country. This has been met by deri&ing assistance !rom 9IS: C431%64art17'1/-3 = Code o! ractice !or lastics i e wor# 6thermo lastics material7: 4art 1 ;eneral rinci les andchoice o! material.0.(.


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SECTION 13

1.%. The code is limited to lastic i es e$truded !rom thermo lastic materials. In this code where&erthe term = olyethylene> a ears singly it re!ers to both low density and high density olyethylene

i es.%. ATERIALS%.1. The thermo lastic material generally used !or lastic i e system and the rele&ant Indianstandards are listed below:

aterial Gele&ant Indian Standards

a7 ow density olyethylene 6 @4E7 IS: 30- '1/ M

b7 8igh density olyethylene68@4E7 IS: (/ ('1/-% P

c7 2n' lastici ed 4BC IS: (/ *'1/ U

%.%. Bisual ins ection is necessary !or ma+or de!ects be!ore installation3. General *&ns",era "&ns3.1. General3.1.1. 4lastic i es are suitable !or con&eying water and ha&e certain ad&antages o&er metal i es,such as the resistance to corrosion, light weight toughness, ease o! +oining, laying and !le$ibility.

3.1.%. Some o! the lastics are to some e$tend ermeable to many to many gases and care is thusre"uired in the selection o! material to be used and in siting o! i e wor# to a&oid ha ards.3.1.3. The tensile strength o! lastics decreases with increase in tem erature and im act strengthtends to decrease with decrease in tem erature. Thermo lastics in general de!orm under rolongedloading howe&er small. Such a ro erty o! thermo lastics is called, cold !low, normally to re&ent!ailure due to cold !low it is ad&isable not to allow stresses in the i e due to cold bending 6see art IIo! this code7 there!ore rominent thermo!ormed bends.M S eci!ications !or low density olyethylene i es otable water su lies 6!irst re&ision7P S eci!ications !or high density olyethylene i es !or otable water su lies 6!irst re&ision7U S eci!ications !or un lastici ed 4BC i es !or otable water su lies.V Since rinted as IS: - 3( in eight arts.

Table 1Sl.No.

characteristic 4olyethylene 24BC@4E 8@4E

1 Chemicalresistance

;ood all roundchemicalresistance

;ood all roundchemical resistance

;ood chemical resistance

%


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SECTION 13a lication Internal lumbing

o! buildings watersu lies

2nderground watersu ly lines also !or

lumbing in buildings!le$ible water su lyconnections inbuildings ri&ercrossings, highlycorrosi&e a licationsmarshy and salineareas


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SECTION 13;lobe &al&e 3 0.0

*. !an,l"n# an, s &ra#e*.1. The detailed recautions in handling and storing lastic i es are gi&en in the a ro riate arts6see arts II and III7 o! this code. These is a tendency !or lastic i es to be abused during handlingand s are much more than metal i es and this should be discouraged and ro er care ta#en since

lastic i es are susce tible to damage.

. La."n# an, &"n "n#

.1. This as ect o! wor# also has its di!!erent re"uirements as com ared to metal i es and needsdi!!erent techni"ues and s#ills. @etails o! laying and +ointing are gi&en in 4art II and art III o! thiscode-. Tes "n# & "ns alla "&ns-.1. All i e wor#, !ittings and a liances shall be ins ected and tested hydraulically a!ter thecom letion o! installation. 9e!ore starting any test the system shall be &isually ins ected to ensurethat the recommendation !or the correct installation rocedure ha&e been com lied with and that the

i e line together with a liances, &alues and !ittings are laid in the rescribed manner. Sol&entwelded i e lines should not be ressure tested until at least %( hours a!ter the last sol&ent welded

+oint has been made.-.%. All control &al&es shall be ositioned o en =!or the duration o! the test and o en ends tem orarilyclosed with water tight !ittings. The testing ressure should not be less than one and a hal! times therated ressure o! the i e under use.-.3. 4ressure should be a lied either by hand um or ower dri&en um . 4ressure gauges shouldbe correctly ositioned and closely obser&ed to ensure that at no time are the test ressurese$ceeded. The system should be slowly and care!ully !illed with water, to a&oid surge ressure o!water hammer. Air &ents should be o en at all high oints so that air may be e$ elled !rom thesystem during !illing.-.(. )hen the system has been !ully charged with water and air dis laced !rom the line air &entsshould be closed and the line initially ins ected !or see age at +oints and the !irmness o! su ort

under load. 4ressure then may be a lied until the re"uired test ressure is reached 6see Note7.Note: Thermo lastic i es e$ and under ressure to a greater e$tern than i es o! asbestos cementor cast iron. This e$ ansion is due to low modulus o! elasticity o! the material and results in initial !allo! ressure e&en though there is no lea#age !or all the !our ressure classi!ication o! i es. Theamount o! water re"uired to build u a steady test ressure !or the lastics i es is gi&en in Table %and table 3 !or olyethylene and 4BC i es res ecti&ely. The &alleys are only a ro$imate to gi&e aguideline as &ariations occur due to tem erature !luctuation and &ariation in test ressure and wallthic#ness. The time ta#en to build u a ro$imate study ressure is 1% hours. )ithout any additionalre"uirement o! ma#e u water, the test ressure should not !all more than 0.% D! ? cmW at the end o!one hour test duration. This e$tra "uantity o! water re"uired is normally termed as ma#e u water.

Table % a#e u water re"uired while testing olyethylene i ingNominal si e mm itre ? 100 m line

%* 1.13% 1.(0 %.*0 (.0

* *./0 .*

100 1 .(1%* % ./

Table 3 a#e u water re"uirement while 4BC i ing

Nominal si e itre ? 100 m line*0 %.%

13-63


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SECTION 13-* (.**

100 . 31%* 10./%1*0 1(.*1 0 1 .%0%00 %%.30

-.*. ong lengths o! i es may be tested in con&ention section o! 1 000 to 1,*00 m length. E e* &n 'a er %al" ..1.


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SECTION 13

3.1. Be,,"n# - 9edding is the sound granular material directly beneath the i e in the trench bottom.9edding includes the basic trench !oundation = e = i! re"uired lus es ecially re ared layer o! sand = != on which i e will rest3.%. C&% l"n# area & &"n - This is the s ace inside the soc#et in which the rubber ring gas#eto erates.3.3. Gr&ve - This is a seating made by turning to lodge the rubber ring gas#et. It ossesses thesection laid down in the design and is machined at one end o! each i e section or in the cou ling asthe case may be.

3.(. Lea,"n# "n - This is the initial art o! the soc#et and assists insertion o! the rubber ring gas#et3.*. P" e 4&ne (B - It is the trench cross section area !rom the bottom o! the i e to a minimum o!300 mm abo&e the to o! the i e and is !illed with sound granular soil 6see 3.1%73. . Pr"0ar. )a*+ "ll - It means the density o! com acted, dry site soil e$ ressed as a ercentage o!laboratory standards, as determined by the rocedure.3.-. R"n# ,e le* "&n - It means the density o! com acted dry site soil e$ ressed as a ercentage o!laboratory standards, as determined by the rocedure.3. . R"n# ,e le* "&n - It means an out o! round condition not e$ceeding *F o! the diameter o! a i esection as a result e$ternal loads im osed u on it.3./. R%))er r"n# #as+e &r a*+"n# - This is rubber ring ha&ing the section diameters and hardness

s eci!ied by the design and !orms the hydraulic seal !or the i es.3.10. Se*&n,ar. )a*+ "ll (C - it is between the i e, one and ground le&el and is !illed with ro erlycom acted nati&e soil.3.11. S&*+e - In this art o! a i e, the end o! the i e bearing the rubber ring gas#et is inserted or itis a cou ling with rubbering gas#ets as the case may be.3.1%. S&%n, #ran%lar S&"l - It shall be crushed roc# with a si e range o! * mm to %* mm, ea gra&elor sand.

3.13. Uns a)le #r&%n, - It shall mean nati&e soil which are so!t, mushy and unstable to stand&ertically when e$ca&ated and which can not be e$ ected to ro&ide a !irm !oundation or side su ort.(. !an,l"n#

13-65


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SECTION 13(.1. Trans &r a "&n - All i e sections and !ittings shall be su orted on timber saddles s aced at (m centers with a ma$imum o&erhang o! % m stoc# height should not general e$ceed o! %m. 4i esshall be ste ed to the &ehicle o&er the su ort oints using non'metallic liable stra s or ro es only.(.%. S &r"n# & " e an, " "n#s(.%.1. 4i es and !ittings with diameters o! less than 1 m may be stored directly on sandy soil theground should be !lat and !ree !rom shar ro+ection and stones?roc#s bigger than (0 mm in diameteror o! other otentially damaging debris.(.%.%. 4i es with diameters greater than 1 m may be stored on their deli&ery cradles at a ma$imumdistance o! m c?c.(.%.3. I! the sur!ace is not !lat or is slo ing, then all the i es shall be chec#ed to re&ent rolling.(.%.(. All rubber rings gas#ets and other items shall be stored in a cool, dry and dar# lace to a&oiddamage o! any #ind.(.%.*. The containers o! lubricants should be #e t tightly closed to a&oid entry o! dirt.

Documents

KSRB Section-13 Water-Supply.doc