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//10 :56.2 :))20.2 :40 x 40 cm :
f`c = 25 N/mm2 , fy= 420 N/mm
2 :qall= 1.80 kg/cm2= 180 kPa
))20.2450 550
800 kN 1280 960
C1
C2
C3
40
40
40 40
60
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//10 :
: ).)21.2))x1 ))l1= 60 cmP 800 1280 960 3040 kN
: ( . ) ( . ) ( . ) ( )800 0 60 1280 5 10 960 10 60 3040 x
.x 5 65 m
:.L 2x 11 30 m
):)l2 2l 11 30 10 60 0 70 m. . .
))21.2
x1= 510 550
800 kN 1280 960
L = 1060
P = 3040
X
Y
x
l1 l2
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//10
:. 2
g
all
P 3040 x 1000A 16 90 m
q 180 x 1000
:.
..
gA 16 90B 1 50 m
L 11 30
: 2u
gu
all
P 1 3 x 3040 x 1000A 21 96 m
q 180 x 1000
..
gu
u
A 21 96B 1 94 1 95 m
L 11 30
.. .
.
))22.2
d/2 d
d/2
0.70
L = 11.30 m
C1 C2 C3
800 kN 1280 960
0.6 4.50 5.50
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Strip Footings
//10 .
. .
uu
gu
P 1 3 x 3040q 179 180 kPa
A 11 30 x 1 95
: ))63 cm))70 cm ).)C2 . ( )0b 4 630 400 4120 mm 412 cm
c
c 0
3
c
c
fv b d
12
25v 0 75 x 630 x 4120 x 10
3
v 3244 50 kN
`
.
.
.
csc 0
fdv 2 b d
b 12
`.
( ) . .
. ( ) 3c40 x 63 25
v 0 75 2 630 x 4120 x 10 6584 kN
412 12
. . .2u c
v 1 3 x 1280 1 03 x 195 1457 1 kN v ok : ))23.2 .. . /
u uq B 180 x 1 95 351 kN m
):( :
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//10 b = 1.80 m , d = 0.63 m :
: : :
))23.2
-1040 kN
351 kN/m
-1664 kN -1248 kN
837.47 921.97
742.03
1009
58.34
156.40
937.50
1365
81.63
-3
C
U
U C
25V = 0.75 630 1800 10 = 708.75 kN
6
max. V at d from column face 0.7 (1009) = 706.3 kN
V < V
+
ma xM = 1365 kN . m
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Strip Footings
//10
).)24.2
:67.2))24.2 8T14/m8T14/m
8T14/m 9T22/m
b = 1.800 m
d = 0.63 m
6
min2
25 210 x 81 = 0.85 x 1- 1-
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//10 ))25.2 :0.40 x 0.40 m :
).)c= 60 kg/cm2 ).)s= 1400 kg/cm2 ).)q = 1.5 kg/cm2
::
80 t
6 m
6 m
6 m
6 m
120 t 120 t
120 t
80 t
24 m
a
a
))25.2Sec. a-a
0.40
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//10 .
3 x 120 2 x 80 360 160 520A 34 67 m
15 15 15
:.
.34 67
B 1 44 m24
))B = 1.50 m :
. . /.
25 20q x 10 1 44 kg cm1 5 x 24
: :
1 50 0 40c 0 55 m
2
. ..
:. .
. .
214 44 x 0 55
M 2 18 t m2 :))d 52 18 x 10
d 0 315 14 71 cm100
.. .
: s s s
Q q c d 14 4 0 55 d( ) . ( . )
.))ds
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Strip Footings
//10 s s
s s
s
Q 14 4 0 55 dd d 0 275 m
b q 1 x 14 44
. ( . ).
. .
)h = 35 cm()d = 28 cm(. )AS= 7.66 cm2/m()min= 0.002.(
:: ))40 cm
. /b
520q 21 67 t m
24
.))26.2 ))hb= 135 cm).)d = 128 cm )As= 41.73 cm.(
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Strip Footings
//10
. ))11 T 22 / m .bQ 47 933
2
b
47 92 x 10q 9 40 kg cm ok
40 x 128
.. /
).)27.2
))26.2
50
80 70
60
60
70
50
80
80 t
120 t
120 t
120 t
80 t
14.4 t/m
77.8
77.8
55.6
64.8 77.8
55.677.8
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//10
:))27.2
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//10
. . )20%(
