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Indian Standard

PROVISION OF WATER-STOPS AT TRANSVERSECONTRACTION JOINTS IN MASONRY ANDCONCRETE DAMS — CODE OF PRACTICE

(First Revision)

ICS 23.040.45; 93.160

0 BIS 2001

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

December 2001 Price Group 3

Dams and Reservoirs Sectional Committee, WRD 9

FOREWORD

This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalizedby the Dams and Reservoirs Sectional Committee had been approved by the Water Resources Division Council.

The opening of the contraction joints provides passages through the dam which unless sealed, would permit theleakage of water from the reservoir to the downstream face. To stop this leakage, water-stops should be installedin the joints adjacent to the upstream face.

Advancement in the specifications and the manufacture of material have resulted in the acceptance of polyvinylchloride (PVC) as suitable material for joint seal. The material can be manufactured for a number of shapesand sizes suiting to the specific requirement. In view of this, the matter regarding the replacement of copperwater-stop and asphalt water-stop by PVC water-stops has been under consideration for quite some time.Experience in India and abroad has suggested that asphalt water-stops become defunct for want of adequateheating arrangement and as a result, it has been felt that the same should be replaced by PVC water-stops.Copper water-stops can accommodate only a small lateral movement. Experience in the Pacific North West ofUnited States has shown that the sheet-type copper water-stop is very vulnerable to failure especially in highnavigation lock. In Indian condition, project authorities have reported difficulties in properly brazing thecopper sheets and also its missing from the structure during construction. Accordingly, it has been felt that thecopper water-stop should be replaced by PVC water-stops. This standard was first published in 1987. [n thisrevision of the standard use of only PVC water-stops have been recommended and provision of other materialshave been deleted.

There is no 1S0 standard on the subject. This standard has been prepared based on the data received fromindigenous manufacturers’ and also taking into consideration the pactices prevalent in the field in India.

The composition of the Committee responsible for the formulation of this standard is given in Annex A.

For the purpose of deciding whether a particular requirement of this standard is complied withl the final value,observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with1S 2: 1960 ‘Rules for rounding off numerical values (revised)’. The number of significant places retained inthe rounded off value should be the same as that of the specified value in this standard.

Is 12200:2001

Indian Standard

PROVISION OF WATER-STOPS AT TRANSVERSECONTRACTION JOINTS IN MASONRY ANDCONCRETE DAMS — CODE OF PRACTICE

/- . -.. ,(First lYevMon)

1 SCOPE

This standard deals with the provision of PVC water-stops across ungrouted transverse contraction jointsin masonry and concrete dams.

2 REFERENCES

The Indian Standards given below contain provisionswhich through reference in this text, constituteprovisions of this standard. At the time of publication,the editions indicated were valid. All standards aresubject to revision, and parties to agreements basedon this standard are encouraged to investigate thepossibility of applying the most recent editions ofthe standards.

IS No. Title

290:1961 Specification for coal-tar black paint456:2000 Code of practice for plain and rein-

forced concrete Vourth revision)

15058:2001 PVC water-stops at transverse con-traction joints for use in masonry andconcrete dams — Specification

3 PVC (POLYVINYL CHLORIDE) WATER-STOPS

3.1 Material

The water-stop should be fabricated from a plasticcompound, the basic resin of which shall be polyvinylchloride. The compound shall contain additionalresins, plasticizers, inhibitors or other materials such

that when the material is compounded, it shall meetthe requirements given in IS 15058:2001.

3.2 Shape and Dimensions

The typical shape and dimensions of PVC water-stops are given in Fig. 1. However, the section ofPVC water-stop will vary d~pending on head and siterequirements.

4 INSTALLATION OF WATER-STOPS

4.1 In the case of masonry dams, the surface adjacentto the blockouts (shown by dotted lines in Fig. 2)shall be irregular and the joints in the masonry shallbe raked out when mortar is green, with some stonesprotruding beyond dotted lines regularly in bothdirections. No such blockouts shall be provided inconcrete dams where concreting on either side of thewater-stops is done along with the concreting of therest of the block.

4.2 The blockout may be concreted in lifis not morethan 1.5 m. Minimum grade of concrete to be used inthe blockout shall be M 20 (see IS 456).

4.3 The blockout of one block maybe concreted firstand the joint face given a coat of coahar black paintconforming to IS 290 and then only the blockout ofthe second block should be concreted so as to have aclear contraction joint.

4.4 Typical details of water-stop arrangement (atcontraction joints between two monoliths of a dam)

Alldimensionsinmillimetms.

FIG, 1 TYPICALCROSS-SECTIONOFPVC WATER-STOP

1

1s 12200:2001

I FOR MASOf#RY DA-MONLY.NO SUCHBLOCKOUT IS REQUIRED FOR I

t

~ CONCRETE DAM-———— —. -——— -——-

nl

CONCRETEBLOCKOUT

(1850X6001 ●

FLO& %

CONTRACTION IJOINT I

VC WATER-STOP

U/S FACE OF I TO GALLERYDAM

LFLOOR DRAIN

-— ..- —— -- ——-— ~—-1

1850(MINIMUM)————4A

Vv v

Alldimensions in millimetres.

FIG.2 SECTIONALPLANAT CONTRACTIONJOINTS

non-overflow section are shown in 4.5 PVC water-stops shall be provided aroundnear the top of aFig. 3, near the crest of a gated overflow section in galleries/adits at the contraction joint between twoFig. 4, near the bottom of the dam in Fig, 5 and monoliths of a dam as shown in Fig. 7. In case ofungated overflow section in Fig. 6. masonry dam, the thickness of concrete cover may

be 400 mm.

1 TOP OF DAM

7

I150mln

I1000min

-LMWL

250 X 250 STEEL PLATE 7 /OUTLINEOF THE BLOCKOUTSFOR MASONRY DAM ~,— .-— —- —-— ---- —1————-.

# I

_600—

11 II

t h iI

—-/

-

.250-’l

it=

I

I

iI

H--lAll dimensions h millimetres

~ P.V.C WATER-STOP

— C#I200 TRAP DRAIN

FIG. 3 TYPICALWATER-STOPDETAILSNEARTHEToP OFNON-OVERFLOWSECTIONOFDAM

2

Is 12200:2001

rSEE DETAIL B

II flSEE DETAIL A

AXIS

U/S FACE

OF

OF

i

!PVC ‘WATER-STOP (TO BE SUITABLY JOINED TOTHE GATE SILL BEAM)

E S!LL BEAM

DETAIL h’

] ~PVC WATER-STOP ~

“ f%+’ I PIPE

DE TAIL B

Alldimensions in millimetres.

FIG. 4 TYPICALWATER-STOPDETAILSNEARTHECRESTOFGATEDOVERFLOWSECTION

..

4.6 Water-stops rolls should be stored in a suitable 5 JOINTING

environment to avoid its damage due to adverseweather conditions.

PVC water-stops shall be jointed in straight reachesonly by an experienced trained personnel using a

4.7 During installation, the exposed portion of water- suitable device in consultation with the engineer-in-

steps should be protected against adverse weather charge and the manufacturer.

conditions.

3

Is 12200:2001

--.+.

:0

%wv~

~3

/

PVC.WATER-STOP J

150 7

>“

/

251A

—

-300+300

+IIIII

LLOPE 1:50

----

*

I

/ I

I

I

IIIII

0200 STEEL PIPECONNECTED TOFOUNDATIONGALLERYDRAIN

‘Ff200 TRAP DRAIN

P.V.C. WATEft6TOP

/4;0

ACCEPTABLE DAMFOUNDATION ELEVATION

‘~)’ J= //f

h-lmo—----+i

All dimensions in millimetres.

FIG. 5 TYPICALWATER-STOPDETAILSNEARBOTTOMOFDAM

AXIS OF DAM

)\

PVC WATER-STOPS SHALL BE SUITABLY JOINEDTO THE ISMB 200 600 LONG(300 ON EACH SIDEOF CONTRACTIOd JOINT?

I1 700X 500X700 SLOCKOUT

cP12,4 Nos.300 LONG J-BOLTS - ~

1=— +700

600 - “- -

H-t \PVC WATER-STOP

All dimensions in millimetres.

FIG. 6 WATER-STOPDETAILSFORUNGATEDOVERFLOWSECTION

. $<

Is 12200:2001

PVC WATER-STOP ~ ,

4

,., . ,.

500

,

Soo

Soo

/t

GALLERY/ADtT

500

Alldimensions in millimetres.

FIG. 7 PVC WATER-STOPAROUNDGALL~RYIADITAT CONTRACTIONJOINT

., .,. ..>.

5

Is 12200:2001

.!

A!.,

ANNEX A

(Foreword)

COMMITTEE COMPOSITION

Dams and Reservoirs Sectional Committee, WRD 9

Organization

Central Water Commission, New Delhi

Bhakra Beas Management Board, Chandigarh

Central Board otlrigation & Power,New Delhi

CentraFSoil& Material Research Station,New Delhi

Central Water &Power Research Station, Pune

Central Water Commission, New Delhi

Consulting Engineering Services (I) Pvt Ltd,New Delhi

Geological Survey ofindia, Lucknow

Narmada & Water Resources Department, Government of Gujarat,Gandhinagar

Indian InstituteofTechnology, New DelhiIrrigationDepartment, Governmentof AndhraPradesh, Hyderabad

Irrigation & Waterways Directorate, Governmentof West BengaF,Kolkata

Irrigation Department, Governmentof Uttar Pradesh, Roorkee

Irrigation Department, Governmentof Punjab, Chandigrrrb

Irrigation Department, Government of MaharrrshtrzNasik

Irrigation Department, Governmentof Haryan&Chandigarh

Water Resources Department Governmentof MadhyaPradesh,Bhopal

Jaiprakash Industries Ltd, New Delhi

Kamataka Power Corporation Limited, Bangalore

Kerala State Electricity Board, Thiruvananthapuram

Gammon India, Mumbai

National Hydroelectric PowerCorporation LtrFjFaridabadNorth Eastern F+ctric Power Corporation Ltd,New Delhi

National Institute of Hydrology, Roorkee

Public Works Department,GovernmentofTamil Nadu, Chennai

Tehri Hydro DevelopmentCorporation,Noida

BIS Dkectorate General

Representative(s)

DRB. K. MrrrAL(Chairman)

CmEFErwsrw@3FMxswDAM)DrREcroR (DESIGN)B&B DESIGNDrRECrORATE(Alternate)

M-aus.P.KAusHrsHSrauT. S. MuRnrv(Allerrrate)

DawcmrrSmrrA. K. DwivAN(AIteiw@

SHSJR.M. KHATSrJRSASmuP. B. DEOrmrKM(Alternate)

fhJxTOR (CMDD-NW&S)DrRECTORkm?Rvow OPErrAnoNDrRECJTJRAm(~kernate)

SHRJM. K.NARASIMHANA

Sm S. S. NARANG(Alternate)

SHRIG. K. K.MSTHASmuR. N. SmwH(Alferrrale)

CHEFENGINEER(MEoruM& MJNOR)ANDADDLSECRETARYSUPSRJNTSNDINGENGINEER(CDG) (Alternafe)

HEADOFTHECrvrL ENGMHUNGDEPARmmr

CHIEFENGINEER(1&CAD)SUPERINTENDINGENGINEER(DAMS)(Affernate)

SHRIA. DASGUPTA

.%SRIH. P. CsrArowmrm(Alternate)

CHEFENGINESR(DAMDs.mmr)summrmmw ErwmwER(DAMDEMNCtRcrx1)(Alternate)

CrrrEFENGINEER(RSDD)DIRE~ORDAMS(RSDD) (A]ternafe)

SUPSRJtmr-mnwENGITWER(MD)EXECOTNEEN@NEER(MD-4)(Alternate)

CHJITENGJNESR(PRomr3s)DtREmR (EwnmmG ) (Afternde)

SHNA. K. RJSHJDJRECTOR(DAMS)(Alfernate)

SriruD.G. KADKAOSSHJUNARENDRASrNGH(Alternate)

SW P.R.MALTSKAIuUNASHJOS. M.CHEBBI(Alterrraie)

SHJUGEORGECJ-I-AN

Sm M. S. BISAJUA

SHRIR. D.VARANGAONKAR(Alternate)

SrrsrK.S.NAGARAJA

SHRIUTPALBORA

DRS.M. SETHDRP. K. MAHAPATRA(Alternafe)

Emrwfs+mclsrmCHIEFENGJNESR(Afterrrate)

SHRIL.K. BANSAL

StrRJS. S. Sma, Director& Head (WRD)

.. ...—

<...-’-

(

~epresending Director General (Et-oficio)]

Member-SkcretarySmuR. S. JUNEJA

Joint Director (WRD), BIS

6

. . . .. ... .. . . . . ., ..... . . . . . ,, .. .... ...... ... . “,

A

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods

and attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.

Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from Doc : No. WfUl 9 (283).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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