Cable Trench IS 456

TB-332-607-016 REV-02

400 kV Switchyard at Yeramarus

DESIGN OF CABLE TRENCH SECTION 1-1 For detail of section TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

1!62  m

.ssumi'% ma"! #e'%th )* tre'ch as m with #)'%itudi'a# s#)(e )* 1 / 70 #e'%th u(t) secti)' 1-14-4 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8





1!62



70

5

0!073 m

0!073

1!69 m &.:!

&a"! T)ta# ;ei%ht )* ca+#e Tre'ch wa##

1!23

Surchar%e (ressure

< 5

2000 k%m2

S)i# de'sity

γ

5

100 k%m 3

.'%#e )* i'ter'a# *ricti)' =)e**icie't )* i'ter'a# *ricti)'

φ 5

0

5

1!000

>a 5 1 1-si'01si'0

ei%ht )* trayca+#e c)''ect)rw1

re*er emai# dated 26!06!13

)

0 k%m #e'%th )* wa##

 idth )* tray

0!7 m

?)! )* trays



CASE-I  .%en no &#e$ in #%e #$enc% n/ soi" o#si/e #%e &"" 8atera# stress ),er the wa## due t) u'i*)rm surchar%e (ressure >a " < T)ta# acti,e thrust due t) surchar%e$1

2000!00

.cti,e thrust due t) Back*i## $2512@>a@ γ @;A2 @;A2

"

1!70

2000!00 k%m 2

5

3396!67 k% k%m

5

29!90 k% k%m

5

992!6 k%m

0!@100@1@1!69A2

T)ta# acti,e thrust $a 3396!67  $a acts at a dista'c e y a+),e . a'd a cts h)riF)'ta##y! Taki'% Taki'% m)me't a+ )ut .

29!90

992!7@y53396!67@1!69229!9@1!693 Be'di'% m)me't at the +ase )* wa##

5

992!6

"

y 5 0!727

0!727 m

5

433!91 k% k%-mm

 =)'sideri'% 1m #e'%th )* wa## &)me't *r)m tray =)''ected *r)m wa##

0

T)ta# m)me't esi%' m)me't &u1

"



0!7

2"

10!00 k% k%-m

433!91



10!0

5

403!91 k%-m

1!0

"

403!91

5

6'(()*6 k%-m

=)'crete %rade

& 2

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water

1!69

.cti,e thrust due t) water

0! "

Be'di'% m)me't at the +ase )* wa##

5

1000 "

1!69 A2

1442!161

"

1!69

1!0

"

16!43

1!69 m

5

3

1442!16 k%m

5

16!43 k% k %-mm

 =)'sideri'% 1m #e'%th )* wa## esi%' m)me't &u2

5

1224)64 k%-m 20

8

B

8

$1 1!69

169

$2

y

; 3

70 ;2

. esi%' m)me't *)r wa##

6'(()+ k%-m



Re
67!6

@ 104  0!13

@2@1000A0!

139!94 mm

$r),idi'% 

400 mm

E**ecti,e de(th d

400 -40-

5

3 mm

Reinfo$ce,en# &u+d 2

5

" 104 

67!6

1000 "

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2

Re
5 5

0!4 0!12 Re*er S$16ta+D Ta+#e 1

Re


0!12

" 1000 "

3

100

5

40!4 mm2

TB-332-607-016 REV-02


$r),idi'% mai' rei'*)rceme't

9140C:C

12

.rea )* stee# (r),ided

5

*0')4 mm2

&i'imum rei'*)rceme't 5 0!12C .s (er IS 4(6 4(6

5

40!0 mm2

$r),idi'% distri+uti)' rei'*)rceme't .rea )* distri+uti)' stee# (r),ided

C%ec fo$ "if#

9200 C:C

10

392! mm2

5

fo$ ,5) /e#%

$ress $ressur ure e due due t) tre'c tre'ch h G'#y G'#y ead ead 8)ad 8)ads s 5 ( (ressure ue ) wa er er 5

249! 249!37 37 k%m k%m2m 2m ! %m m

I!G!S! *)r H(#i*t 5

0!9 0!9 time times s the ,erti ,ertica ca## #)ad #)ad

1!132

J 1!2 1!2 Iai# Iai#s s

Design of !o##o, s"!) .ssumi'% thick'ess )* s#a+

5

400 mm

 idth )* ca+#e tre'ch

2900 mm

rade )* c)'crete

& 2

.ssumi'% 8)ad (er m )* ca+#e tre'ch

Be$ing 7$ess$e c%ec fo$ !o##o, s"! CASE-I  .%en no &#e$ in #%e #$enc% n/ soi" o#si/e #%e &""  t )* t)( c),er s#a+

1 "

2!9

0!12 " 200

8i,e #)ad )' c),er s#a+

5

906!2 k%

5

00!0 k%

 t )* trayca+#e

1

"

160

"

5

00 k%

 t )* +)tt)m s#a+

0 !4

"

2!90

" 200

5

2900!00 k% 3646!67 k%

 t )* side wa##s

0 !4

"

1!23

" 200 "2

5

 t )* +)tt)m s#a+ (r)Kected

0 !4

"

0!30

" 200 "2

5

600!00 k%

 t )* s)i# )' (r)Kected s#a+

1!69

"

0!30

" 100 "2

5

134!20 k% k%

0 !1

"

3!00

" 2000

5

700!00 k%

5

11**')12 k%

 t )* $== T)ta# wt

906!2000029003646!67700

$ressure at the +ase )* s#a+

117!12





3!0

" 1

?et +eari'% ca(acity )* s)i#

5 5 J

33+6)32 k%m 2 10000 k%m 2 ;e'ce G!>!

?et u(ward (ressure

3396!32

&a"imum +e'di'% m)me't at

-

2396!32

2900!00

2!9@1

2396!32 k%m 2m s#a+

2

"

2!90 

5

219!13 k%-m

5-

403!9 k%-m

mid s(a' )* +)tt)m s#a+ E'd m)me't *r)m wa## ?et m)me't at mid s(a' )* s#a+

219!13

esi%' m)me't *r)m s#a+&s1

5

-1+*4)'' k%-m

"

-

-194!77

5

-2977!16 k%-m

1

"

1000

5

123 k%



123

5

13710!4 k%

1 !

403!9

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &""  t )* water

1!23

T)ta# wt

" 117!12


13710!4





2!9

" 1


5 5J

4727!74 k%m 2 10000 k%m 2 ;e'ce G!>!

?et u(ward (ressure

4727!74


-

3099!01



2900!00

123!33

3099!01 k%m 2

2!9@1

2

"

2!9 

5

327!3 k%-m

5

16!4 k%-m

mid s(a' )* +)tt)m s#a+ E'd m)me't *r)m wa## ?et m)me't at mid s(a' )* s#a+ esi%' m)me't *)r s#a+&s2

327!3



16!4

5

40'4)26 k%-m

1 !

"

4074!26

5

6111!39 k%-m

8

6111)3+ g-,

Design ,o,en# fo$ s"!



Re
6111!39

" 104  0!13 "

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$r),idi'% 

133!09 mm 400 mm


400 - 40-4

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36 mm

Reinfo$ce,en# &u+d 2 Re
269939 #

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6111!39

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0!4 0!137 Re*er S$16

$

2

TB-332-607-016 REV-02



9140C:C

12


5

*0')4 mm2

&i'imum rei'*)rceme't 5 0!12C .s (er IS 4(6 4(6

5

40!0 mm2



9200 C:C

10

392! mm2

5

fo$ ,5) /e#%

$ress $ressur ure e due due t) tre'c tre'ch h G'#y G'#y ead ead 8)ad 8)ads s 5 ( (ressure ue ) wa er er 5

249! 249!37 37 k%m k%m2m 2m ! %m m

I!G!S! *)r H(#i*t 5

0!9 0!9 time times s the ,erti ,ertica ca## #)ad #)ad

1!132

J 1!2 1!2 Iai# Iai#s s


5

400 mm

 idth )* ca+#e tre'ch

2900 mm

rade )* c)'crete

& 2


Be$ing 7$ess$e c%ec fo$ !o##o, s"! CASE-I  .%en no &#e$ in #%e #$enc% n/ soi" o#si/e #%e &""  t )* t)( c),er s#a+

1 "

2!9

0!12 " 200

8i,e #)ad )' c),er s#a+

5

906!2 k%

5

00!0 k%

 t )* trayca+#e

1

"

160

"

5

00 k%

 t )* +)tt)m s#a+

0 !4

"

2!90

" 200

5

2900!00 k% 3646!67 k%

 t )* side wa##s

0 !4

"

1!23

" 200 "2

5

 t )* +)tt)m s#a+ (r)Kected

0 !4

"

0!30

" 200 "2

5

600!00 k%

 t )* s)i# )' (r)Kected s#a+

1!69

"

0!30

" 100 "2

5

134!20 k% k%

0 !1

"

3!00

" 2000

5

700!00 k%

5

11**')12 k%

 t )* $== T)ta# wt

906!2000029003646!67700


117!12





3!0

" 1


5 5 J

33+6)32 k%m 2 10000 k%m 2 ;e'ce G!>!

?et u(ward (ressure

3396!32


-

2396!32

2900!00

2!9@1

2396!32 k%m 2m s#a+

2

"

2!90 

5

219!13 k%-m

5-

403!9 k%-m


219!13


5

-1+*4)'' k%-m

"

-

-194!77

5

-2977!16 k%-m

1

"

1000

5

123 k%



123

5

13710!4 k%

1 !

403!9

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &""  t )* water

1!23

T)ta# wt

" 117!12


13710!4





2!9

" 1


5 5J

4727!74 k%m 2 10000 k%m 2 ;e'ce G!>!

?et u(ward (ressure

4727!74


-

3099!01



2900!00

123!33

3099!01 k%m 2

2!9@1

2

"

2!9 

5

327!3 k%-m

5

16!4 k%-m


327!3



16!4

5

40'4)26 k%-m

1 !

"

4074!26

5

6111!39 k%-m

8

6111)3+ g-,




Re
6111!39

" 104  0!13 "

2

" 1000 ! 5

$r),idi'% 

133!09 mm 400 mm


400 - 40-4

5

36 mm

Reinfo$ce,en# &u+d 2 Re
269939 #

5

6111!39

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1000 "

36

2

5 5

0!4 0!137 Re*er S$16

$

2

TB-332-607-016 REV-02


Ta+#e 2 Re
 0! 0 !136672

" 1000 "

36

100

46!6 mm2

5

$r),idi'% mai' rei'*)rceme't at t)( a'd +)tt)m

91*0 C:C

12

.rea )* stee# (r),ided (r),ided &i'imum rei'*)rceme't 5 0!12C .s (er LS 46

0!12@400@1000100

$r),idi'% distri+uti)' rei'*)rceme't rei'*)rceme't

5

62*)0 mm2

5

40 mm2 9200 C:C

10

.rea )* distri+uti)' stee# (r),ided

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5 12

20

70

400

8 70

12

9 140 C:C

10

9 200 C:C

12

9 1*0 C:C

169

600

400 2900

De#i" of T$enc% Sec 1-1 Design of c!"e #$enc% co;e$

20

2900 Lo/ 8i,e 8)ad )' c), er s#a+=)'ce'trated

5

00 k%

H8 )' c),er

400 k%m2

T)ta# H8m

100 k%m

Se#* wt! )* s#a+

0!12 1000"2!9

T)ta# wt! )* s#a+

906!2

"

200

5

906!2 k%mm-width

0!2

5

226!6 k%m

T)ta# H8

326!6 k%m

S(a'

#y 5

2900 mm mm

#" 5

300 mm

#y  #" 5

9!67 M2 M2

.s (er LS 46 S#a+ S#a+ sha## +e desi%' as one &< s"! =)'crete %rade

& 2

.ssumi'% thick'ess )* s#a+

5

Be'di'% m)me't at ce'tre )* s(a'

00@290010004326!6@29001000A2

esi%' m)me't &u

1!

Re
"

12 mm 70!0 k%-m

70!0

5

10!7@10A40!13@2@20A0!

10!70 k%-m 110!79 mm

$r),idi $r),idi'% '% 

12 mm


12 - 1-4

5

106 mm

Reinfo$ce,en# &u+d2

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10!70

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3!77

5

1!346 Re*er S$16 Ta+#e 1 36!7 mm2 91(0 C:C 334)+ mm2

5

&i'imum rei'*)rceme't 5 0!12C 0!12C .s (er LS 46 46 $r),idi'% distri+uti)' rei'*)rceme't rei'*)rceme't

*

9 200 C:C

7$o;i/ing #"es# 3 nos of s#ee" !$s *

9 200 C:C

20

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2900

9 200 C:C Sec#ion A-A

TB-332-607-016 REV-01

400 kV Switchyard at Yeramarus Yeramarus

DESIGN OF CABLE TRENCH SECTION 1-1 = 1-1 For detail of section Refer drg no. TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

en/ of sec#ion 1-1 =4-4

1!770 m

.ssumi'% ma"! #e'%th )* tre'ch as 4m with with #)'%itudi'a# s#)(e )* 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

4



1!7703333333



70

5

0!06 m

0!060

1!3 m &.:!


1!9

Surchar%e (ressure

< 5

2000 k%m2

S)i# de'sity

γ

5

100 k%m3


φ 5

0

5

1!000

>a 5 1-si'01si'0



)

0 k% k%m #e'%th )* wa## .ssumed

 idth )* tray

0!7 m

?)! )* trays




2000!00

"

.cti,e thrust due t) Back*i## Back*i## $2512@>a@ γ @;A2 @;A2

5

2000!00 k%m2

5

3660!67 k%m

5

301!11 k%m

5

667! k%m

1!3

0!@100@1@1!3A2

T)ta# acti,e thrust $a 3660!67 $a acts at a dista'ce y a+),e . a'd acts h)riF)'ta##y! Taki'% Taki'% m)me't a+)ut .



301!11

667!77@y53660!67@1!32301!11@1!33 Be'di'% m)me't at the +ase )* wa##

y 5

667!

"

0!777

0!777 m

5

19!67 k%-mm

5

339!67 k%-m

5

*00+)(1 k%-m


0


"



0!7

2"

19!67



10!0

1!0

"

339!67

10!00 k%-m

=)'crete %rade

& 2

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water.ssumi'% 7mm thk tre'ch c),er

1!3


0! "


5

1000 "

1!30 A2

167!06006

"

1!30

1!0

"

1021!97

1!30 m

5

3

167!060 k%m

5

1021!97 k% k %-mm


5

1(32)+6 k%-m

20 8

B

8

$1 1!30

130

$2

y

;3

70 ;2


*00+)( k%-m



Re
009!1

@ 104  0!13

@2@1000A0!

12!37 mm

$r),idi'% 

4(0 mm


40 -40-

5

40 mm


5

" 104 

009!1

1000 "

40

2

Re
5 5

0!49 0!13 Re*er S$16 Ta+#e 1

Re
269939!"#s



0!13

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40

100

5

60!70 mm2

$a%e 4

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9160C:C

12


5

'06)( mm2

&i'imum rei'*)rceme't 5 0!12C .s (er IS 4(6

5

40!0 mm2

$r),idi'% distri+uti)' rei'*)rceme't


9140C:C

10


60!7 mm2

5

fo$ ,5) /e#% $ressure due t) tre'ch G'#y ead 8)ads 5

201!39 k%m2m

H(#i*t (ressure due t) water 5

230!33 k%m2m

I!G!S! *)r H(#i*t 5

0!9 times the ,ertica# #)ad

1!01

J 1!2 Iai#s


5

40 mm

idth )* ca+#e tre'ch

0 mm

rade )* c)'crete

& 2

.ssumi'% 8)ad (er m )* ca+#e tre'ch Be$ing 7$ess$e c%ec fo$ !o##o, s"! CASE-I  .%en no &#e$ in #%e #$enc% n/ soi" o#si/e #%e &"" t )* t)( c),er s#a+

1 "

!

0!12 " 200

8i,e #)ad )' c),er s#a+

5

1734!37 k%

5

00!0 k%

t )* trayca+#e

1

"

320

"

5

1600 k%

t )* +)tt)m s#a+

0!4

"

!0

" 200

5

6243!7 k% 699!2 k%

t )* side wa##s

0!4

"

1!9

" 200 "3

5

t )* +)tt)m s#a+ (r)Kected

0!4

"

0!40

" 200 "2

5

900!00 k%

t )* s)i# )' (r)Kected s#a+

1!3

"

0!40

" 100 "2

5

263!6 k%

0!1

"

6!3

" 2000

t )* $== T)ta# wt

1734!370016006243!699!2900263!61270


2143!06





6!3

" 1


5

1270!00 k%

5

214*3)06 k%

5 5 J

33*3)16 k%m2 10000 k%m2 ;e'ce G!>!

?et u(ward (ressure

333!16


-

22!16

6243!7

22!16 k%m2m s#a+

!@1

"

! 2 10

5

69!69 k%-m


69!69


-

1!

5-

339!7 k%-m

5

1616)02 k%-m

5

2424!03 k%-m

339!7

"

1616!02 1000

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" t )* water

1!9

T)ta# wt

"

1

"

2143!06



19


2343!39





!

" 1


5

19 k%

5

2343!39 k%

5 5J

4223)13 k%m2 10000 k%m2 ;e'ce G!>!

?et u(ward (ressure

4223!13


-

274!2



6243!7

19!33

!@1

274!2 k%m2

!6 2 10

"

5

47!1 k%-m


5

1022!0 k%-m

47!1



1022!0

5

+4'+)'+ k%-m

1!

"

9479!79

5

14219!6 k%-m

8

1421+)6* g-,




Re
14219!6

" 104  0!13 "

" 1000 ! 5

2

$r),idi'% 

203!02 mm 4(0 mm


40 - 40-4

5

406 mm


5

" 104 

14219!6

1000 "

406

2

Re
5 5

0!6 0!249 Re*er S$16 Ta+#e 2

Re
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0!24929207

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269939!"#s

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5 16

.rea )* stee# (r),ided &i'imaum rei'*)rceme't 5 0!12C .s (er LS 46

406

0!12@40@1000100

1012!1 mm2 9220 C:C

5

+13)( mm2

5

40 mm2

10 5

9140 C:C (60)' mm2

$a%e 

TB-332-607-016 REV-01


12

70

20

70

8 70

12

9 160C:C

10

9 140 C:C

16

9 200 C:C

130

40 0

De#i" of T$enc% Sec 1-1 = 1-1

Design of c!"e #$enc% co;e$

20

277 Lo/ 8i,e 8)ad )' c),er s#a+=)'ce'trated

5

00 k%

H8 )' c),er

400 k%m2

T)ta# H8m

100 k%m

Se#* wt! )* s#a+

0!12 1000"2!77

T)ta# wt! )* s#a+

67!17

"

200

5

67!19 k%mm-width

0!2

5

216!0 k%m

T)ta# H8

316! k%m

=)'crete %rade

& 2


5


00@27710004316!@2771000A2


1!

Re
12 mm 61!2 k%-m

"

61!2

5

977!73@10A40!13@2@20A0!

977!73 k%-m 106!47 mm

$r),idi'% 

12 mm


12 - 1-4

5

106 mm


5

" 104 

977!73

20

"

106

2

Re
5

3!4

5

1!207 Re*er S$16 Ta+#e 1

Re
1!20713976

"

20

106

100


5 *


319!90 mm2 91(0 C:C

5

334)+ mm2

&i'imum rei'*)rceme't 5 0!12C .s (er LS 46 $r),idi'% distri+uti)' rei'*)rceme't

*

9 200 C:C

7$o;i/e #"es# 3 nos of s#ee" !$s) A *

9 200 C:C

20

12 20 * A

269939!"#s

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TB-332-607-016 REV-01



1 !0 2 m

.ssumi'% ma"! #e'%th )* tre'ch as 12m with #)'%itudi'a# s#)(e )* 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

12



1!02



70

5

0!016 m

0!016

1!041 m &.:!


1!166

Surchar%e (ressure

< 5

2000 k%m2

S)i# de'sity

γ

5

100 k%m3


φ 5

0

5

1!000

>a 5 1-si'01si'0



)

0 k%m #e'%th )* wa## .ssumed

idth )* tray

0!7 m

?)! )* trays

3


2000!00

.cti,e thrust due t) Back*i## $2512@>a@ γ @;A2

"

5

2000!00 k%m2

5

202!00 k%m

1!04

0!@100@1@1!041A2

T)ta# acti,e thrust $a 202!00  $a acts at a dista'ce y a+),e . a'd acts h)riF)'ta##y! Taki'% m)me't a +)ut .

97!31

307!31@y5202@1!041297!31@1!0413 Be'di'% m)me't at the +ase )* wa##

307!3

"

5

97!31 k%m

5

307!3 k%m

y 5 0!46

0!46 m

5

1422!11 k%-mm


0

T)ta# m)me't

"



0!7

2"3

90!00 k%-m

1422!11



90!0

5

112!11 k%-m

1!0

"

112!11

5

226*)1' k%-m

esi%' m)me't &u1 =)'crete %rade

& 2

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water.ssumi'% 7mm thk tre'ch c),er .cti,e thrust due t) water

1!041 0! "


5

1000 "

1!041 A2

41!40

"

1!041

1!0

"

1!02

1!041 m

5

3

41!41 k%m

5

1!02 k%-mm


5

2*2)03 k%-m 20

8

B

8

$1 1!041

1041

$2

y

;3

70 ;2


226*)2 k%-m

 226!17 @ 104  0!13

Re
@2@1000A0!

1!0 mm

$r),idi'% 

3'( mm


37 -40-

5

330 mm


5

" 10 4 

226!17

1000 "

330

2

Re
5 5

0!21 0!0 Re*er S$16 Ta+#e 1

Re
269939!"#s



0!0

" 1000 "

330

100

5

192!24 mm2

$a%e 7

TB-332-607-016 REV-01



9300C:C

12


5

3'6)* mm2


5

40!0 mm2



92(0 C:C

10


314)0 mm2

5

fo$ ,5) /e#%

$ressure due t) tre'ch G'#y ead 8)ads 5

1634!26 k%m2m


141!00 k%m2m

I!G!S! *)r H(#i*t 5


1!06

J 1!2 Iai#s


5

400 mm


32 mm

rade )* c)'crete

& 2


Be$ing 7$ess$e c%ec fo$ !o##o, s"! CASE-I  .%en no &#e$ in #%e #$enc% n/ soi" o#si/e #%e &"" t )* t)( c),er s#a+

1 "

2!662

0!12 " 200 " 2

8i,e #)ad )' c),er s#a+

5

1664!062 k%

5

00!0 k%


1

"

320

"3

5

960 k%

t )* +)tt)m s#a+

0!4

"

!32

" 200

5

32!00 k%

t )* side wa##s t )* $== T)ta# wt

0!37

"

1!166

" 200 "3

5

3279!3 k%

0!1

"

!32

" 2000

5

106!00 k%

5

12'+3)44 k%

1664!06200960323279!3106


12793!44





!33

" 1


5 5 J

2402)(2 k%m2 10000 k%m2 ;e'ce G!>!

?et u(ward (ressure

2402!2


-

1402!2

32!00

1402!2 k%m2m s#a+

!32@1 2

"

!33 10

5

3976!94 k%-m


3976!94


-

1!

5-

112!1 k%-m

5

2464)*3 k%-m

5

3697!24 k%-m

112!1

"

2464!3 1000


1!166

T)ta# wt

"

1

"

12793!44



1166


1399!44





!32

" 1

5

1166 k%

5

1399!44 k%

5


5J

2621)4+ k%m2 10000 k%m2 ;e'ce G!>!

?et u(ward (ressure

2621!49


-

1402!2



32!00

1166

1402!2 k%m2

!32@1

2

"

!3 10

5

3976!94 k%-m


5

1!0 k%-m

3976!94



1!0

5

4164)+6 k%-m

1!

"

4164!96

5

6247!44 k%-m

8

624')44 g-,

esi%' m)me't *)r s#a+&s2 Design ,o,en# fo$ s"!

 6247!44

Re
" 104  0!13 "

" 1000 ! 5

2

$r),idi'% 

134!7 mm 400 mm


400 - 40-4

5

36 mm


5

" 104 

6247!44

1000 "

36

2

Re
5  0!1397923

" 1000 "

$r),idi'% mai' rei'*)rceme't at t)( a'd +)tt)m &i'imaum rei'*)rceme't 5 0!12C .s (er LS 46 $r),idi'% distri+uti)' rei'*)rceme't

269939!"#s

36

100

5 16



5

0!12@400@1000100

0!49 0!140 Re*er S$16 Ta+#e 2 497!66 mm2 92(0 C:C

5

*03)* mm2

5

40 mm2

10 5

92(0 C:C 314)0 mm2

$a%e 


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TB-332-607-016 REV-01

$a%e 9

TB-332-607-016 REV-01


3'( 12

70

20

8 70

12

9 300 C:C

10

9 2(0 C:C

16

9 2(0 C:C

1041

700

400 32

De#i" of T$enc% Sec 3-3 = 3-3


20

2663 Lo/ 8i,e 8)ad )' c),er s#a+=)'ce'trated

5

00 k%

H8 )' c),er

400 k%m2

T)ta# H8m

100 k%m

Se#* wt! )* s#a+

0!12 1000"2!662

T)ta# wt! )* s#a+

32!0312

"

200

5


0!2

5

20!01 k%m

T)ta# H8

30!0 k%m

=)'crete %rade

& 2


5


00@2662!1000430!01@2662!1000A2


1!

Re
"

12 mm 60!74 k%-m

60!74

5

90!61@10A40!13@2@20A0!

90!61 k%-m 102!64 mm

$r),idi'% 

12 mm


12 - 1-4

5

106 mm


5

90!61

20

" 104 

"

106

2

Re
3!23

5 5

1!096 Re*er S$16 Ta+#e 1

Re
1!096473

"

20

106

100


5 *


290!7 mm2 91(0 C:C 334)+ mm2

5


*

9 200 C:C


9 200 C:C

20

12 20 * A

269939!"#s

2662!


$a%e 10

TB-332-607-016 REV-01



en/ of sec#ion 1-1

1!69  m

.ssumi'% ma"! #e'%th )* tre'ch as 4m with #)'%itudi'a# s#)(e )* 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

4



1!693333333



70

5

0!072 m

0!072

1!770 m &.:!


1!9

Surchar%e (ressure

< 5

2000 k%m2

S)i# de'sity

γ

5

100 k%m3


φ 5

0

5

1!000

>a 5 1-si'01si'0



)

0 k %m #e'%th )* wa## .ssumed

idth )* tray

0!7 m

?)! )* trays




2000!00

"


5

2000!00 k%m2

5

340!67 k%m

5

220!67 k%m

5

6361!3 k%m

1!77

0!@100@1@1!77A2

T)ta# acti,e thrust $a 340!67  $a acts at a dista'ce y a+),e . a'd acts h)riF)'ta##y! Taki'% m)me't a +)ut .

220!67

6361!34@y5340!67@1!772220!67@1!773 Be'di'% m)me't at the +ase )* wa##

6361!3

y 5

"

0!74

0!74 m

5

479!9 k%-mm


0


"



0!7

2"

10!00 k%-m

479!9



10!0

5

494!9 k%-m

1!0

"

494!9

5

'422)*+ k%-m

=)'crete %rade

& 2

CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water.ssumi'% 7mm thk tre'ch c),er

1!77


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5

1000 "

1!770 A2

167!04006

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1!0

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924!73

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5

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924!73 k%-mm


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1770

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0!0 0!230 Re*er S$16 Ta+#e 1

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5

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92(0 C:C

10


314)0 mm2

5

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2234!00 k%m2m


2120!33 k%m2m

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1!0

J 1!2 Iai#s


5

30 mm


440 mm

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1 "

4!4

0!12 " 200

8i,e #)ad )' c),er s#a+

5

271!2 k%

5

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1

"

320

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5

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0!3

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5

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5

930!00 k%

5

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271!2001600393!6222!13930


1927!13



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5

34! k%-m

5-

494!6 k%-m


34!


-

1!

494!6

5

406)26 k%-m

"

406!26

5

609!39 k%-m

"

1000

5

2370 k%

5

1297!46 k%


2!370

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1

1927!13


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5

924!7 k%-m

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924!7

5

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5

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Re
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2

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306 mm


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1770

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De#i" of T$enc% Sec 1-1 = 4-4 Design of c!"e #$enc% co;e$ I CO>ER SLAB FOR TRENCH SECTION 1-1

20

262 Lo/ 8i,e 8)ad )' c),er s#a+=)'ce'trated

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0!12 1000"2!62

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20!312

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262 mm

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300 mm

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.s (er LS 46 S#a+ sha## +e desi%' as one &< s"! =)'crete %rade

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1!

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5

6!3@10A40!13@2@20A0!

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5

106 mm


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II CO>ER SLAB FOR TRENCH SECTION 4-4

2(0

12

Lo/ 8i,e 8)ad )' c),er s#a+=)'ce'trated

5

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100 k%m

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0!12 1000"2!62

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20!64062

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262 mm

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301 mm

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12 mm 90!97 k%-m

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5

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106 mm


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DESIGN OF CABLE TRENCH SECTION 2-2 For detail of section Refer drg no.TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

1!3 m

.ssumi'% ma"! #e'%th )* tre'ch as  m with #)'%itudi'a# s#)(e ) * 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

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CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water.ssumi'% 100mm thk tre'ch c),er .cti,e thrust due t) water

1!373 0! "


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5

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5

420!0 mm2 91'( C:C

10


44!6 mm2

5


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5

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200 mm

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1 "

2!

0!1 " 200

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5

700 k%

5

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1

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160

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5

640 k%

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0!3

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600!00 k%

5

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T)ta# wt

70000640240266!3600


7!3

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269!1


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177!04


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273!1 k%-m

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5

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1000

5


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1

7!3


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100 mm 44!17 k%-m

44!17

5

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TB-332-607-016 REV-01


DESIGN OF CABLE TRENCH SECTION 3-3 For detail of section 3-3 Refer drg no. TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

1 !0 2 m


10

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70

5

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CASE-II  .%en &#e$ in #%e #$enc% n/ no soi" o#si/e #%e &"" e(th )* water.ssumi'% 100mm thk tre'ch c),er

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1000 "

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1!03

1!0

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5

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5

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5

2'+)*' k%-m

20 8

B

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$1 1!03

103

$2

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70 ;2


226!0 k%-m

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@ 104  0!13

@2@1000A0!

0!6 mm

$r),idi'% 

300 mm


300 -40-

5

2 mm


5

" 104 

22!96

1000 "

2

2

5

Re
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0!09 Re*er S$16 Ta+#e 1

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249!09 mm2

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92(0C:C

12


5

4(2)2 mm2

5

360!0 mm2 922( C:C

10


34*)+ mm2

5


fo$ ,5) /e#%


140!00 k%m2m


133!33 k%m2m

I!G!S! *)r H(#i*t 5


1!0

J 1!2 Iai#s


5

300 mm


2700 mm

rade )* c)'crete

& 2

.ssumi'% 8)ad (er m  )* ca+#e tre'ch


1 "

2!7

0!12 " 200

8i,e #)ad )' c),er s#a+

5

43!7 k%

5

00!0 k%


1

"

160

"3

5

40 k%

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2!70

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5

202!00 k% 174!00 k%

t )* side wa##s

0!3

"

1!163

" 200 "2

5

t )* $==

0!1

"

2!900

" 2000

5

0!00 k%

5

61'3)'( k%

T)ta# wt

43!700402021740


6173!7

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5


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226!7


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202!00

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5-

104!0 k%-m

5

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5

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1000

5

1163 k%


1!163

T)ta# wt

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1

6173!7


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1163

7337!0

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2!7

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7337!0 k% 2717!44 k%m2

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2717!44


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2!7 2 

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5

1400!20 k%-m


5

16!6 k%-m

1400!20

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5

1(*6)'* k%-m

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5

230!17 k%-m

8

23*0)1' g-,


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2

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$r),idi'% 

300 mm


300 - 40-

5

2 mm


5

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230!17

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2

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Re
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0!37 5

92(0 C:C 4(2)2 mm2 360 mm2

5 10 5

922( C:C 34*)+ mm2

$a%e 1


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300

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9 2(0 C:C

10

9 22( C:C

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T)ta# H8

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=)'crete %rade

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12 mm 620!4 k%-m

620!4

5

931!26@10A40!13@2@20A0!

931!26 k%-m 103!91 m m

$r),idi'% 

12 mm


12 - 1-4

5

106 mm


5

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2

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1!132 Re*er S$16 Ta+#e 1 

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9 1(0 C:C

5

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5

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5 A *

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DESIGN OF CABLE TRENCH SECTION (-( For detail of section Refer drg no.TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

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.ssumi'% ma"! #e'%th )* tre'ch as m with #)'%itudi'a # s#)(e )* 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

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5

1000 "

1!413 A2

99!76

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1!0

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470!2

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5

99!76 k%m

5

470!2 k%-mm


5

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392! mm2

5


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27 mm


10 mm

rade )* c)'crete

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1 "

1!

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8i,e #)ad )' c),er s#a+

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462! k%

5

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2764!30


-

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1271!

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2964!

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5

"

1000

5

163 k%

5

6677!29 k%


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1

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5

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5

470! k%-m

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5

13(+)01 k%-m

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203!1 k%-m

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2

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2

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$r),idi'% 

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1 m

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94!3 k%

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390!00 k%

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437!0024094!41361!2390


3913!13

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1!7 

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640!66 k%-m


640!66


-

1!

5-

170!9 k%-m

5

-+30)24 k%-m -139!36 k%-m

170!9

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1

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1000

5

1210 k%

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1210

5

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2927!0


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640!66 k%-m


5

19! k%-m

640!66

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19!

5

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1!

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12!7 k%-m

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269939!"#s

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92(0 C:C 314)0 mm2 270 mm2 9 2(0 C:C

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100 20

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0!44

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100 mm 27!07 k%-m

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5

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100 - 1-

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DESIGN OF CABLE TRENCH SECTION '-' For detail of section 1-1 Refer drg no.TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

0!67 m

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647!70 k%m

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206!200160412!767!260


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2096!9


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260!39


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5

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962!

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101! k%-m

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5

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269939!"#s

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7 20

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DESIGN OF CABLE TRENCH SECTION *-* For detail of section 1-1 Refer drg no.TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

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101! k%-m

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319!73

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269939!"#s

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$a%e 31

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7 20

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9 1(0 C:C

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Se#* wt! )* s#a+

0!07 1000"0!9

T)ta# wt! )* s#a+

0!1

"

200

5

0!2

5

0!2 k%mm-width 0!04 k%m

T)ta# H8

100!0 k%m

=)'crete %rade

& 2


5


00@9010004100!04@901000A2


1!

Re
"

7 mm 130!04 k%-m

130!04

5

19!0@10A40!13@2@20A0!

19!0 k%-m 47!6 mm

$r),idi'% 

7 mm


7 - 1-

5

 mm


5

19!0

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Re
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0!29 Re*er S$16 Ta+#e 1

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0!290306

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9 200 C:C 334)+ mm2


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20

7 20 * A

269939!"#s

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TB-332-607-016 REV-01


DESIGN OF CABLE TRENCH SECTION +-+ For detail of section Refer drg no.TB 0 332 316 004 Design of c!"e #$enc% &"" &i' de(th )* tre'ch wa## +e#)w %r)u'd #e,e#

0 !3 7 m

.ssumi'% ma"! #e'%th )* tre'ch as 210m with #)'%itudi'a# s#)( e )* 1 / 70 e(th )* tre'ch wa## due t) s#)(e &a" de(th )* tre'ch a##*r)m 8

210

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5

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2000 k%m 2

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0

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1


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T)ta# acti,e thrust $a 1310!00  $a acts at a dista'ce y a+), e . a'd acts h)riF)'ta##y! Taki'% m)me't a +)ut .

36!12

1696!12@y51310@0!6236!12@0!63 Be'di'% m)me't at the +ase )* wa##

1696!1

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2000!00 k%m 2

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1310!00 k%m

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36!12 k%m

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1696!1 k%m

y 5

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13!33 k%-mm


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26!00 k%-m

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5

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0!6 0! "


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1000 "

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214!1

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0!211 Re*er S$16 Ta+#e 1

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221!17 mm2

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I!G!S! *)r H(#i*t 5

1!42

0!9 times the ,ertica# #)ad M 1!2 Gk


5

10 mm


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17!12 k%

5

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230!00 k%

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1+66)** k%

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17!1200036!3622!230


1966!

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2070!39


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169!39

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169!39 k%m2m s#a+

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"

5

191!26 k%-m


191!26


-

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5-

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5

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5

"

1000

5


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T)ta# wt

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1

1966!


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2796!

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2796! k% 2944!0 k%m2

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2944!0


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169!39

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191!26 k%-m


5

46! k%-m

191!26

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46!

5

23*)10 k%-m

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"

23!10

5

37!1 k%-m

8

3(')1( g-,


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Re
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2

$r),idi'% 

32!17 mm 1(0 mm


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5

10 mm


5

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37!1

1000 "

10

2

5

Re
0!32 5

0!091 Re*er S$16 Ta+#e 2

Re
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0!091

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100

9!66 mm2

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10

0!12@10@1000100

922( C:C

5

223)3 mm2

5

10 mm2

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9 22( C:C 223)3 mm2

$a%e 33

Cable Trench IS 456

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