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SYLLABUS
EC – 801 Geo Tech Engg II
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Lesson Plan
Session JAN 2015-JUNE 2015
IES COLLEGE
IES COLLEGE OF TECHNOLOGY, BHOPAL
Lesson Plan
DEPARTMENT CIVIL ENGG. SESSION JAN 2015 – JULY 2015
NAME OF THE
TEACHER
Aayus! R!"a#!ya SEMESTER VIII
SU$JECT
G%&. T%"'!"a( E')).II SU$JECT CODE CE*+01
UNIT – 1
S.N
O
TOPIC PROPOS
ED.
NO.OF
LECTUR
ES
ACTUAL
NO.OF
LECTURE
S
Date NO OF THE
STUDENTS
1. Sa((&, F&u'-a!&'s / Ty% &
&u'-a!&'s sa((&, a'- -%%. $%a#!')
"aa"!y & &u'-a!&' &'
"&%s!&' (%ss a'- "&%s!% s&!(s.
5
2. G%'%#a( a'- (&"a( s%a# a!(u#%s.Fa"&#s %%"!') $.C.
T%&#!%s & 3%a#!') "aa"!y
2
4. P#a'-(% T%#6a)! $a((a S7%8&'
M%y%# & a'- Ha'sa'. I.S.
"&-% &' $.". D%%#8!'a!&' & 3%a#!')
"aa"!y
4
9. L!8!s & &a( a'- -!%#%'!a(
s%(%8%'s. P(a%
(&a- %s.
4
UNIT -
S.N
O
TOPIC PROPOSED
. NO.OF
LECTURES
ACTUAL
NO.OF
LECTURES
Date NO OF THE
STUDENTS
1. D%% F&u'-a!&' / P!(% &u'-a!&'
Ty%s & !(%s %s!8a!&' &
!'-!!-ua( a'- )#&u "aa"!y & !(%s !' "&%s!&' (%ss a'- "&%s!%
9
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s&!(s.
2. Sa!" a'- -y'a8!" u(a%.. P!(%
(&a- %s
S%(%8%' & !(% )#&u N%)a!%
s7!' #!"!&'
4
4. u'-%#* #%a8%- !(%s a'- %!#
-%s!)'. P!(%s
u'-%# %'s!&' !'"(!'%- a'- (a%#a(
(&a- Ca!ss&'s.
1
9. :%(( &u'-a!&'. E;u!(!3#!u8 &,%((s. A'a(ys!s
&# sa3!(!y !(s a'- s!s #%8%-!a(
8%asu#%s.
2
UNIT – !
S.N
O
TOPIC PROPOSED
. NO.OFLECTURES
ACTUAL
NO.OFLECTURE
S
Date NO OF
THESTUDENTS
1 S&!( I8#&%8%' T%"'!;u%s /
C&8a"!&'. F!%(- a'- (a3&#a&#y
8%&-s P#&"&# "&8a"!&'
%ss Fa"&#s a%"!') "&8a"!&'
4
2 P#&%#!%s & s&!( a%"%- 3y
"&8a"!&'. Va#!&us
%;u!8%' &# !%(- "&8a"!&' a'-
%!# su!a3!(!y
4
4 F!%(- "&8a"!&' "&'#&(. L!
!"7'%ss.
S&!( sa3!(!sa!&' / M%"a'!"a(
L!8% C%8%' $!u8%' C%8!"a(
T%#8a( E(%"#!"a(sa3!(!sa!&'
a'- sa3!(!sa!&' 3y )#&u!').
4
9 G%&*sy'%!"s y%s u'"!&'s
8a%#!a(s a'- us%s.4
UNIT -"
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S.N
O
TOPIC PROPOSED
. NO.OF
LECTURES
ACTUAL
NO.OF
LECTURES
Date NO OF THE
STUDENTS
1. S&!( E<(&#a!&' a'- F&u'-a!&'s
&' E<a's!% a'- C&((as!3(%
s&!(s / M%&-s & s&!(
%<(&#a!&'.
2
2. P(a''!') & %<(&#a!&' #&)#a88%
&# 3u!(-!')s !),ays a'- %a#
-a8s.D!su#3%- a'- u'-!su#3%- sa8(%s
a'- sa8(%#s &# "&((%"!') %8.
4
4. Ca#a"%#!s!"s & %<a's!% a'-
"&((as!3(% s&!(s %!# #%a8%'4
9. C&'s#u"!&' %"'!;u%s &'
%<a's!% a'- "&((as!3(% s&!(s.
CNS (ay%#.
2
UNIT -#
S.N
O
TOPIC PROPOSED
. NO.OF
LECTURES
ACTUAL
NO.OF
LECTURES
Date NO OF
THE
STUDENTS
1. S%% !(%s=$u(7%a-s a'- Ma"!'%
&u'-a!&' / C(ass!!"a!&' & s%%
!(%s=3u(7%a-s.
Ca'!(%%# a'- a'"&#%- s%% !(%s
4
2. C&%#-a8s 8a%#!a(s y%s a'-
a(!"a!&'s.
M&-%s & !3#a!&'.
2
4. Mass*s#!') a'a(&)y Nau#a(
#%;u%'"y. E%" & !3#a!&' &'
s&!(s.
V!3#a!&' !s&(a!&'.
4
9. C#!%#!a &# -%s!)'. D%s!)' & 3(&"7
&u'-a!&' &# !8a" y% &
8a"!'%.
2
PREPARED $Y/ Aayus! R!"a#!ya APPROVED $Y/
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IES COLLEGE OF TECHNOLOGY, BHOPAL
$.E. >+
SEM? Ass!)'8%' *1G%& T%" E')) II >CE*+01?
Date o$ Ass%&n/ Date o$ S'()%ss%on*
@.1Defne Ultimate bearing Capacity. net Ultimate bearing Capacity and net
sae bearing Capacity
Ans. A) Ultimate bearing Capacity :The Ultimate bearing capacity is
the gross pressure at the base o the oundation at which the soil ails in
shear
b)net Ultimate bearing Capacity; The net Ultimate bearing capacity
is the net increase in pressure at the base o oundation that causesshear ailure o soil.It is eual to the gross pressure minus o!erburden
pressure.
nu "u#yD
c) net safe bearing Capacity: It is the net soil pressure which can be
saely appliedto the soil considering only shear ailure.It is obtained by
di!iding the net ultimate bearing capacity by a suitable actor o
saety.Thus
$ns "nu%&
2 8a#7s
@.2
'rite the e(pression or a) immediate settlement o cohesi!e soil by
C*+,IC*,-
b) the teraghi/s bearing capacity euation
c) ultimate bearing capacity euation by 0-A1DT+/s A1A+2I
Ans. A)i"3445#67)%,s)I
b) u " c/1c 8 o18.9231y
c) u"9.5cu8yD !alid only or ooting with perectly smooth base in
contact with soil
58a#7s
@.4'rite the classifcation o settlement o oundation under loads
Ans.
5.Immediate or elastic settlement4i)#It ta;es place during or
immediately ater construction o the structure.
7.Consolidation ettlement4c)#This component o the settlement occurs
due to gradual e(pulsion o water rom the !oids o soil.
<.econdary consolidation settlement4s)#This component o the
settlement is due to secondary consolidation.this settlement occurs
ater completion o the primary consolidation
Thus total settlement is gi!en by "i8c8s
5 8a#7s
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@.9 'rite the assumption used in teraghi/s bearing capacity theory.
Ans. 5. The base o ooting is rough
7.The ooting is laid at a shallow depthi.e D"= 3
<.The shear strength o soil abo!e base o ooting is neglected.The soil
abo!e the base is replaced by uniorm surchargw 2D .
.The load on the ooting is !ertical and is uniormly distributed.
9.The ooting is long i.e +%3 ratio is infnite>where 3 is the width and + is
the length o the ooting.
?.The shear strength o soil is go!erned by @ohr Coulomb euation.
5 8a#7s
@.+'rite the limitation o plate load test
Ans. 4i) It has limited depth o inBuence. It could only gi!e the bearing capacity
o soils with depth up to two times the diameter o plate.
4ii) It may not pro!ide inormation on the potential or long term consolidation
o oundation soils. 4iii) There is scale eect as the sie o test plate is smaller
than actual oundation.
>!? T& )a!' a""%ss & %s &s!!&' %<"aa!&' !s "a##!%- &u ,!" "aus%s s!)'!!"a'
)#&u'- -!su#3a'"%. T% "a')% !' )#&u'- s#%ss (%a-s & % "a')% & s&!( #&%#!%s
,!" % %s !s (a''%- & !'%s!)a%.
5 8a#7s
@.Determine the ultimate bearing capacity o a strip ooting 5.7 m wide
and ha!ing the depth o oundation o 5 m .Use teraghi theory and
assume general shear ailure ta;e
/" <9E>2"5F G1%@<>and c/"59 G1%@<.
ol. u " c/1c 8 2D 18.9231y
&or /" <9E 1c"9H.F 1"5. and 1y"7.
u"599H.F 85F55. 8.95F5.77.
"7JHJ G1%@7
58a#7s
@.10Draw the diagram which show dierent type o shear ailure
Ans.Type o shear ailure is 5 8a#7s
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@.11A ooting 7 m suare is laid at a depth o 5.< m below the ground
surace Determine the net ultimate bearing capacity using I code
method.Ta;e 2"7J G1%@<> /"<JE and c/"J
ol. &or /"<JE
1c"<J.5 1"5F. and 1y"77.
c"5.< "5.7 and y".F
dc " 5 8 J.74D %3)tan 49E8 /%7)
"58.745.<%7)tan?JE"5.7<
d"dy"5 8.54D %3)tan 49E8 /%7)
"5.55
nu"c1ccdcic 8 41 #5) di 8 .9231yydyiy'/
"J85.<7J45F.#5)5.75.5558J.97J777..F5.555
"5JJJ G1%m7
5 8a#7s
@.12Determine the net ultimate bearing capacity o the ooting in ue 55. I
a)the water table rise to the le!el o the base
b)the water table rises to the ground surace
c)the water table is 5 m below the base
ol.a)'/".9
Thereore>nu" 5.<7J45F.#
5)5.75.5558.97J777.J.F5.55.9
"FJ5 G1%m7
b) '/".9J. the surcharge is also reduced as the eecti!e stress is
reduced.Thus
nu"5.<47J#K.F5)45F.#5)5.75.5558.97J777.J.F(5.55.9
"9J? G1%m7
c)'/ is obtained by linear interpolation
'/"J.984.95)%7".H9
5 8a#7s
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Thereore> nu"5.<745F.#5)5.75.5558.97J(777.J.F5.55.H9
"KJ5 G1%m7
@.14'rite the eect o water table on bearing capacity.
Ans. Ultimate bearing capacity has been de!eloped on the assumption
that the
water table is located at a great depth.I the water table is located close
to the
oundation>the bearing capacity euation needs
modifcation
CASE I –Water table located above the base of the footing g a The eecti!e surcharge is reduced as the eecti!e weight below the
water table is eual
to the submerged unit.
Thereore
"Dwy 8ay/
'here Dw " depth o water table below the ground surace
a "height o water table abo!e the base o ooting
abo!e euation can be written as> substituting a "D #Dw>
"y/D 8 4y#y/)Dw
CASE II –Water table located at a depth !" belo! g b
I' !s "as% s&!( a3&% % 3as% & % &&!') !s 8&!s a'- 3%(&, 3as% 8ay 3% u((y &#
a#!a((y su38%#)%-. I % ,a%# a3(% !s a % 3as% %' % 3%a#!') "aa"!y %;ua!&' !s
,#!%' as/
@u( B "N" D N; $ N R :2 * >4?
I % ,a%# a3(% !s a a -% $ 3%(&, % "as% & % &&!') %' % 3%a#!') "aa"!y !s
'& a%"%- a'- '& "&##%"!&' !s #%;u!#%-. I % ,a%# a3(% !s a a' !'%#8%-!a% -% say
:2 3%(&, % 3as% & % &&!') ,%#% 0:2$ %' % 3%a#!') "aa"!y %;ua!&' !s
:#!%' as/
@u( B "N" D N; 1=2 :2 su3 >$ – :2?N
58a#7s
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@u( B "N" D N; $ N R :2 * >9?
:%#% R :2 "a' 3% &3a!'%- #&8 % %;ua!&'/
:2 su3>$ – :2? B $ R :2
:2 su3= >$ – :2? B $R :2
:2 $ – :2 B $R :2
K:2 0.5$ B $R :2
$R :2 B 0.5>:2 $?
R :2 B 0.5>1 :2=$? * >5?
:%' % ,a%# a3(% a 3as% :2 B 0 a'- R :2 B 0.5 a'- ,%' :2 B $ R :2 B 1. T!s
8%a's ,%' ,a%# a3(% !s a 3as% % ,%!) %#8 !' % 3%a#!') "aa"!y %;ua!&' !s
#%-u"%- 3y a( a'- ,%' ,a%# a3(% a )#%a -% > !.%. )#%a%# a' ,!- & &u'-a!&'
3%(&, % 3as% & &u'-a!&'? ,a%# a3(% ,!(( a% '& !'(u%'"% !' % 3%a#!') "aa"!y.
@.19A rectangular ooting 4<m7m) e(erts a pressure o 5JJ G1%m7. Ln a
cohesi!e soil 4,s"95J G1%m7and 6".9) Determine the immediate
settlement at the centre> assuming a)the ooting is Be(ible b)the ooting
is rigid.
olution. i"3445#67)%,s)I
As +%3"<%7"5.9
I"5.<?
i"5JJ7445#.97
)%495J
))5.<?5J#<
".JFmm
b)&or rigid ooting4I"5.J?)
s"5.J?%5.<?.JF"<.5Fmm
58a#7s2
@.15Determine the ultimate bearing capacity o a suare ooting 7m7m in a
soil with unit weight o 5F ;1%m<> /"7JE>c"7J;1%m7.Ta;e the depth o
5.9Jm.Use *ansen/s euation
u " c1ccdcic 81 di 8 .9231yydyiy
1c"5.F< 1"?.Jand 1y"<.9c" 5.7 "5.7 and y".?
Dc"5 8J.<5.9%7.J"5.779
D"dc"5.779
Dy"5
As ic"i"iy"5
$u"7J5.F<5.75.7795845F5.9)?.5.75.7795
8.95F7<.9.?55
"H7F.79 G1%m7
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IES COLLEGE OF TECHNOLOGY, BHOPAL
$.E. >+ SEM? Ass!)'8%' *1
G%& T%" E')) II >CE*+01?
Date o$ Ass%&n/ Date o$ S'()%ss%[email protected] 'rite the eect o water table on bearing capacity 2019 5
@.2 A rectangular ooting 4<m7m) e(erts a pressure o 5JJ G1%m7. Ln a cohesi!e
soil 4,s"95J G1%m7and 6".9) Determine the immediate settlement at the
centre> assuming a)the ooting is Be(ible b)the ooting is rigid
7J5
5
@.4 Draw the diagram which show dierent type o shear ailure 5
@.9 Determine the ultimate bearing capacity o a strip ooting 5.7 m wide and
ha!ing the depth o oundation o 5 m .Use teraghi theory and assumegeneral shear ailure ta;e
/" <9E>2"5F G1%@<>and c/"59 G1%@<.
5
@.5 'rite the basic assumption in!ol!ed in teraghi/s euation 5
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IES COLLEGE OF TECHNOLOGY, BHOPAL
$.E. >+ SEM? MID SEM 1
G%& T%" E')) II >CE*+01?
Ma<!8u8 Ma#7s/ 20 M!'!8u8 Pass Ma#7s/ N&%/ A%8 a'y &u# ;u%s!&'s. A(( ;u%s!&'s "a##y %;ua( 8a#7s. T!8%/ 2 H#s
@.1
2019
5
@.2
7J5
5
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@.4
5
@.9 Determine the ultimate bearing capacity o a strip ooting 5.7 m wide and
ha!ing the depth o oundation o 5 m .Use teraghi theory and assume
general shear ailure ta;e
/" <9E>2"5F G1%@<>and c/"59 G1%@<.
5
@.5 'rite the classifcation o settlement o oundation under loads 5