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Strip Footings

//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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Strip Footings

//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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Strip Footings

//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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Strip Footings

//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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Strip Footings

//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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Strip Footings

//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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Strip Footings

//10

:))27.2

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Strip Footings

//10

. . )20%(