IS 7784-2-1: Design of cross drainage works -Code of practice, Part 2: Specific requirements Section I Aqueducts

10 Pages·1995·1.2 MB·English

by  Bureau of Indian Standards

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IS 7784-2-1 (1995): Design of cross drainage works -Code of
practice, Part 2: Specific requirements Section I Aqueducts
[WRD 13: Canals and Cross Drainage Works]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
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“Knowledge is such a treasure which cannot be stolen”

Indian Stmdard
DESIGNOFCROSSDRAINAGEWORKS-
CODEOFPRACTICE
PART 2 SPECIFIC REQUIREMENTS
Section 1 Aqueducts
First Revision J
(
UDC 626.823~82 : 624.04 : 006.76

I‘
0 BIS 1995
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
April 1995 Price Group 2
Cross eganiarD skroW lanoitceS ,eettimmoC RVD 17
DROWEROF
sihT naidnI dradnatS ( tsriF noisiveR ) was adopted yb the uaeruB of naidnI ,sdradnatS after the draft
dezilanif yb the Cross eganiarD skroW lanoitceS eettimmoC had neeb devorppa yb the reviR yellaV
noisiviD .licnuoC
nA tcudeuqa si a cross eganiard work ni hcihw the reirrac lennahc si deirrac revo the eganiard lennahc
dna the mottob of the hguort or the gnirevoc revo the eganiard sgninepo si evoba the hgih doolf level
ni the eganiard .lennahc
sihT dradnats si dehsilbup ni two parts. Part 1 of siht dradnats srevoc lareneg stnemeriuqer of the
ngised of cross eganiard works dna Part 2 srevoc cificeps stnemeriuqer of suoirav cross eganiard
works ni the gmwollof :snoitces
noitceS 1 stcudeuqA
noitceS 2 segassaprepuS
noitceS 3 lanaC snohpys
noitceS 4 leveL sgnissorc
noitceS 5 nohpyS stcudeuqa
sihT dradnats ( Part teS/2 I ) srevoc cificeps ngised stnemeriuqer of ,stcudeuqa
sihT dradnats was tsrif dehsilbup ni 1983. sihT noisiver si desab no stnemevorpmi edam as a
tluser of ecneirepxe deniag ni the esu of siht dradnats dna ni weiv of the evisnetxe noisiver of Part 1
of siht .dradnats snoitsegguS for noisiver of siht dradnats were deviecer morf lartneC retaW -simmoC

nois dna noitagirrI ,tnemtrapeD tnemnrevoG of rattU Pradesh. snoitacifidoM evah neeb edam ni siht

noisiver so as ot ngila ti htiw Part 1 of the .dradnats ehT rojam snoitacifidom edam etaler ot the
gniwollof :stcepsa
a) ciluardyH data deriuqer for ngised of reirrac lennahc dna eganiard lennahc evah neeb ,deifidom
)b ecnadiuG has neeb nevig for yalps ot eb dedivorp ni gniw sllaw for ,eganiard
c) ciluardyH ngised aspects gnidulcni gnimuA evah neeb detaler ot Part 1 of the dradnats dna
ecneh deteled morf siht ,noisiver dna
d) noitcurtsnoC snoitaredisnoc evah neeb dial nwod for ngised .snoitanibmoc
roF the esoprup of gnidiced whether a ralucitrap tnemeriuqer of siht dradnats si deilpmoc ,htiw the
lanif ,eulav devresbo or ,detaluclac gnisserpxe the tluser of a test or ,sisylana llahs eb dednuor
off ni ecnadrocca htiw SI 2 : 1960 ~&IR< for gnidnuor off laciremun seulav ( revised >‘. ehT rebmun
of tnacifingis secalp deniater ni the dednuor off eulav dluohs eb the emas as that of the deificeps eulav
ni siht .dradnats .’
‘L.... -
IS 7784 ( Part 2 / Set 1) : 1995
Indian Standard
DESIGNOFCROSSDRAINAGEWORKS-
CODEOFPRACTICE
PART 2 SPECIFIC REQUIREMENTS
Section 1 Aqueducts
First Revision )
(
1 SCOPE 3 YGOLONIMRET
1.1 sihT dradnats (Part /2 Set slaed,)l htiw the cificeps 3.1 roF the esoprup of siht ,dradnats the snoitinifed
sttienreriuqer for ngised of .stcudeuqa nevig ni SI 4410 ( Part ceS/Sl 5 ) : 1992 llahs .ylppa
3.2 reverehW the terttt lanac si ,desu ti dluohs eb uekat
2 SECNEREFER ’
ot naem reirrac/lanac‘ .’lenttahc
2.1 ehT naidnI sdradnatS detsil woleb are yrassecen
4 SEPYT FO STCJIDEJIQA
stcnujda ot siht ;dradnats
SI No. litle 4.1 gnidnepeD uo the tnemegnarra of lattac gttissap
revo the ,eganiard na tcudeuqG yam eb deifissalc otni
SI 4410 (Part ceS/Sl :)5 yrassolG of smret gnitaler
the three seirogetac as nevig .woleb A lacipyt yal tuo si
1992. ot revir yellav :stcejorp Part
showtt ni .giF 1.
15 lanaC ,serutcurts noitceS
5 Cross eganiard works Type 1 nI- siht epyt the lattac seunitnoc revo the
eganiard lennahc ni sti lamroit 1nehtrae noitces -tti
SI 7784 (Part 1) : 1993 Code of ecitcarp for ngised gnidule the sknab dna nehtrae .sepols nI siht case,
of cross egalhard :skrow
the htgnel of the strevluc hguorht hcihw the
Part 1 lareneG serutaef
eganiard water si passed rednu the lanac dluohs eb
tsrif( noisiver )
tneiciffus tott yltto ot yrrac the water ,noitces tub

RANSITION I IN 2
SIDE WALL .
ANSION JOINT rTOP OF SIDE WALL
REGTION AT XX
SECTION AT ZZ
.GIF 1 TYPICALP LAN A NDS EC~ON OFA (~mOu( n
1
s1 4877 ( t-h 2 / c& 1) : 5yy1
4.2.2 rrvO a egral revir tcudeuqa c)lyT’to 3 cb
ha ot yrrac eht nehtrae sknab ofthe lanac htiw rieht an 111ay
crolu laciluou~(cc as thr htgucI of eganiard
sepols ( .giF :)~2 culverts
si dua the gnivas cdauI ni
cpYT 2 - nI siht epyt osla the lanac seunitnoc ui sti across tllc canal dluowsn~all rb grcatcr uaht the dcsacrcni cost 01
nehtrae noitces revo the egauiard ,lennahc tub the dcost raiIugrof lauac lwlvcr .suoitistuarts
retuo sepols of sknab are decalper yb guiniater
4.2.3 roF elaideunctui snoitidnoc tcudeuqa cpyT’lo
,sllaw ybereht gnicuder the htgnel of eganiard a11
2 eb croln .laciluouocr ,revewoH
tre;\luc ot that tnetxe ( .giF B2 ). lllay work out to
.(iiiIoiIocr-olIhcct seiduts dluohs cb deirrac tuo ot
epyT 3 - nI siht epyt the nehtrae sknab are -nocsid
cdiccd the lcaxc epyt of tcudeuqa ol cb .dc?curtsuoc
deunit revo the eganiard lennahc dua the
canal
water si deirrac ni yrnosam or etercnoc 5 A‘I’AD ROF N;(ISEJI
tmgh, b(Jx,
epip or yna other elbatius .noitces ehT
barrel, sides 1.5 roF gnikrow tuo ,tcudeuqa the
of the trough are detcennoc OII rehtie edis of the gniwoliof cificeps ugiscd tilt ddata esign dluohs of an cb elbaliava ni
work ot the nehtrae sknab of the lanac yb IlW~IIs 01
noitidda ot those dial uwod ui SI 77x4 (Part 1) : 19’93.
traIlsithlI walls. Generally the lanac si delnull ot
effect ymonoce ( .giF 1 ). 5.1.1 Hydrcrrrlic Daltr
4.2 ehT eciohc of the epyt of tcudeuqa dluohs dneped
no noitaredisnoc of ymonoce hcihw ni urut dluow 5.1 .I .1 CrrntrlJCrrrrier chnnrl
dneped yluiam the ezis of the eganiard ot eb
up011 a) htdiW yawdaorfo dna ssalc CRlfo ,gnidaol dua
passed ni noitaler ot the ezis of the lanac dua the
)b Head ssol uoisivorp at the proposed cross
uoitadnuof strata.
eganiard work.
4.2.1 revO a llams eganiard ,lennahc na tcudeuqa lo
epyT 1 yam eb elbatius as IIO lanac snoitisnart dluow cb 5.1 I. .2 Drtrintrp~ clrtmnel
.deriuqer ehT sgnivas edam eud ot rcnesba 01’ lanac
snoitisnart dluow erom naht asnepuroc te desaercui a) erutaN dcb’lo lairetam dua eulav of s’gninnaM
c&t eud ot the htgnel of eganiard strevluc U hcihw IC dluow tneiciffeoc (n);
evah regral htgnel (across the .)lauac )b elbawollA xullfa ui weiv of water spread,

LCAiAL BED WIDTH
TOP PLAN OF AQUEDUCT
I-CANAL
SERVICE ROAD7 rDOWEL / r RCC BARREL
NORMAL BED
A2 lacipyT nalP dna noitceS fo tcudeuqA )
(Type 1
.GIF 2 TYH:S I:UCOA~O 11 (I ‘1s - Cond
IS 7784 ( Part 2 / Set 1) : 1995
maertspu of the proposed ;krow ,edis tub ton rettalf naht 3 : 1 dna 5 : 1 .ylevitcepser
4 Reported or devresbo ruocs depth for yna -raen ,revewoH ti dluohs eb derusne that the wolt swollof the
yb erutcurts no the emas eganiard ;lennahc dna seiradnuob of the .noitisnart
4 gniraeB yticapac of the noitadnuof strata. 6.5 ehT eganiard lemrahc llahs eb detcerid towards the
_ . .
erutcurts yb elbatius gniniart works ekil gniniart ,sllaw
6 LAYOIJT ediug ,sknab ,srups etc. ehT lanac sknab tnecajda ot the
cross eganiard work dluohs eb protected yb elbatius
6.1 ehT tuoyal of the tcudeuqa dluohs eb so dexif that
evitcetorp serusaem hcus as ,gnifrut gnihctip dna
ti si ylbareferp ni a thgiarts reach of eganiard .lennahc
gnihcnual ,norpa reverehw .yrassecen
ehT reirrac/lanac lennahc dluohs eb at thgir selgna ot
the eganiard lennahc as far as .elbissop 7 CILJIARDYH NGISED STCEPSA
6.2 knaB snoitcennoc ot lanac dna eganiard lennahc
7.1 ehT ciluardyh ngised aspects dluohs eb as per
dluohs eb dedivorp gnidneped nopu the seitreporp of
SI 7784 (Part 1) : 1993.
the lios elbaliava ni the area.
6.3 gniW sllaw for eganiard yam eb dedivorp htiw 2 : I 8 JOINTS
dna 3 : 1 syalps no maertspu dna maertsnwod ;edis the
8.1 stnioJ dluohs eb dedivorp across dna gnola the
yalps dluohs ton eb rettalf naht 3 : 1 dna 4 : 1 -cepser
eganiard lerrab .htgnel ehT mumixam gnicaps of these
.ylevit eganiarD gniw sllaw dluohs eb ylbatius -noc
stnioj ni rehtie noitcerid dluohs eb detimil ot 20 .m A
detten ot hgih .dnuorg
gap of 15 mm htiw water spots at lla the stnioj across
6.4 lanaC snoitisnart dluohs ylbareferp eb dedivorp dna gnola the lerrab dluohs eb dedivorp ot -mocca
htiw 2 : 1 dna 3 : 1 syalps no maertspu dna maertsnwod etadom the .stnemevom

TOP PLAN OF AQUEDUCT
SERVICE ROAD
I_RETAINING WALL
CEMENT CONCRETE
BLOCKS OVER
1NVERTED FLLTER LEAN ‘CONCRETE RCC BARREL
28 lacipyT nalP dna noitceS to tcudeuqA epyT( 2 )
.;KF 2 TYPESO F f k~ i~mrns
3
IS 7784 ( Part 2 / Set 1) : 1995
8.2 nI the case of slerrab gnitser 011 elbisserpmoc ,slios h) lagufirtneC forces - ni case the tcudeuqa ro/dna
sralloc guilcricue the tnioj dluohs eb .dedivorp sihT lliw the road si devruc ni ;nalp
protect the water stop morf gniiaehs eud ot laitnereffid )j ;ycnayouB
tnemelttes neewteb two .stnemges
k) Earth ;erusserp
8.3 nI case of ,slerrabitlum stinu of three or ruof slerrab 1) secroF eud ot erutarepmet ;noitairav
nac eb detpoda edis yb edis htiw lanidutignol stnioj
)m noitcerE ;sdaol
gnivah water spots lla .dnuora
)n cimsieS ;daol dna
8.4 nI case the lanac hguort si detroppus no separate
p) retaW .erusserp
,sreip noisnapxe stnioj of tneiciffus htdiw llahs eb
NOTE - )d( dna )e( era elbacilppa ylno ni esac a daor
dedivorp ni the hguort at the ertnec of the .sreip
egdirb si dedivorp revo eht .tcudeuqa
8.5 retaW spots llahs eb dedivorp at lla stnioj as nevig
9.4.2 yllareneG the gni,vollof ngised snoitanibmoc
ni SI 7784 ( Part 1 ) : 1993.
dluohs eb :deredisnoc
9 LARUTCURTS NGISED STCEPiA a) lanaC ytpme dna niard/maerts at sti wol water
level - lamron noitidnoc tuohtiw ;ekauqhtrae
9.1 roF the noitcurtsnoc of suoirav stnenopmoc of na )b lanaC gninnur lluf pu ot sti .L.S.F dna
tcudeuqa prestressed etercnoc or decrofnier tnemec
niard/maerts at sti wol water level - lamron
etercnoc or yrnosam or a noitanibmoc of these yam eb
noitidnoc tuohtiw ;ekauqhtrae
desu gnidneped nopu the derised ease of noitcurtsnoc
dna evitaler .ymonoce c) lanaC ytpme dna niard/maerts at sti .L.F.H
tuohtiw ;ekauqhtrae
9.2 x elbatius tnemegnarra for gnitroppus the noitces
of the tcudeuqa yam eb dediced gnidneped nopu the d) lanaC gninnur lluf pu ot .L.S.F dna niard/maerts
at sti .L.F.H tuohtiw .ekauqhtrae
erutan of ,noitadnuof ecnereffid neewteb LFH of the
niard dna deb of lanac dna thgieh neewteb deb of lanac e) Comtruction condition
dna mottob of niard/maerts dna the xulffa elbawolla ni !) reiP si detcurtsnoc dna erutcurtsrepus si ton
the .niard nA lacimonoce T?ac,~Iaps eb worked tuo yb a detcurtsnoc dna niard/maerts at s’ti H. .F L
suoiciduj noitanibmoc of the erutcurtsbus dna -repus )ngised( tuohtiw .ekauqhtrae
erutcurts of the .tcudeuqa tcud-itluM lanac snoitces nac )ii erutcurtsrepuS si detcurtsnoc no eno edis of
osla eb adopted. a reip dna niard/maerts at s’ti )ngised(L.F.H
9.3 oT yrrac the noitcepsni/ecivres road across the tuohtiw .ekauqhtrae
. . . -
,eganiard a elbatius tnemegnarra yam eb .dedivorp ro+l NOTE - (a) dna )b( snoitanibmoc fo sgnidaol yam osla
lacimonoce nosaer a yawesuac yam osla eb .deredisnoc eb dekcehc rof cimsies snoitidnoc retfa gnitnuocca rof
nI case a road egdirb si dedivorp revo the tcudeuqa ti rehgih elbissimrep .sesserts
dluohs eb dengised for at tsael CRI ssalc A .gnidaol
9.4.2.1 dniW daol dluohs ton eb deredisnoc -lumis
ylsuoenat htiw .ekauqhtrae
9.4 Design Load and Structural Stability
9.4.2.2 roF ngised of stcudeuqa the effect of ekauqhtrae

ehT forces gnitca no the suoirav parts of the erutcurts forces ni iia the three snoitcerid that si lanidutignol (L),

are detaulave dna the worst fo’noitanibmoc forces si esrevsnart )T( dna lacitrev (V) dluohs eb nekat otni
. J !
nekat ni the .ngised .tnuocca ehT noitanibmoc of these dluohs eb rehtie
9.4.1 ehT sdaol dna forces ot eb deredisnoc ni gningised +T VorL + Vat a .emit
stcudeuqa are as :swollof
a) Dead ;daol
10.1 peeW seloh dna sgniraeb dluohs eb dedivorp as per
b) retaW ;daol
SI 7784 (Part 1) : 1993.
lC eviL ;daol
10.2 tfilpU erusserp dna tixe tneidarg desuac yb
4 tcapmI or cimanyd effect of the evil ;daol
seepage wolf morf the lanac nehw ti si gninnur lluf dna
e>
lanidutignoL forces desuac yb the evitcart effort the eganiard le~mahc si ,yrd eb detnuocca for ni .ngised
or yb gnikarb force of selcihev ro/dna those roF gnicuder the tfilpu erusserp dna tixe zcccup,tneidarg
desuac yb tniartser ot free tnemevom of -raeb roolf dluohs eb dedivorp for ni the lanac deb ni etauqeda
;sgni shtgnel maertspu dna maertsnwod of the work htiw
0 dniW ;daol ffo-tuc sllaw at the .sdne Puccu floors of etauqeda
shtgnel dluohs eb dedivorp at rehtie dne of the lerrab ni
g> latnoziroH force eud ot watqr ;stnerruc
the niard htiw ffo-tuc llaw at the .dne

4
Bureau of Indian Standards
SIB si a yrotutats noitutitsni dehsilbatse rednu the uaeruB naidnIfo Stundards Act, 2986 ot etomorp
suoinomrah tnempoleved of the seitivitca of .noitazidradnats gnikram dna ytilauq noitacifitrec of goods
dna gnidnetta ot detcennoc srettam ni the .yrtnuoc
Copyright
SIB has the thgirypoc of lla sti .snoitacilbup No part of these snoitacilbup yam eb decudorper ni yna
mrof tuohtiw the roirp noissimrep ni gnitirw of .SIB sihT does ton edulcerp the free ,esu ni the esruoc
of gnitnemelpmi the ,dradnats of yrassecen ,sliated hcus as slobmys dna ,sezis epyt or grade
.snoitangised seiriuqnE gnitaler ot thgirypoc eb addressed ot the rotceriD ( snoitacilbuP ), .SIB
Review of Indian Standards
stnemdnemA are deussi ot sdradnats as the deen sesira no the sisab of .stnemmoc sdradnatS are osla
deweiver ;yllacidoirep a dradnats gnola htiw stnemdnema si demriffaer nehw hcus weiver setacidni that
on segnahc are ;dedeen fi the weiver setacidni that segnahc are ,dedeen ti si nekat pu for .noisiver
sresU of naidnI sdradnatS dluohs niatrecsa that yeht are ni noissessop of the tsetal stnemdnema or
.noitide
sihT naidnI dradnatS has neeb depoleved morf Dot No. RVD 17 (105).
Amendments Issued Since Publication
dnemA No. Date of eussI txeT detceffA
UAERUB FO NAIDNI SDRADNATS
:sretrauqdaeH

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