Spread Footing Foundation-2

8/16/2019 Spread Footing Foundation-2

1/12

30 kg/cm250 T/M2

8.61930.48 2.519

4.019

qc = qc B/40 Cwq Df/B +Cwgamma = 603.469 KN/M2qc = 30 kg/cm2 27.870912 tf ! = 2 M 200 CM" = 3.5D# = 1.5 M 150 CMC$% = 1C$& = 0.5

'"()T*Cqma = ,/B" -1 + 6/" 153.06509388 kN/m2="/6

qma = 2,/-3B -"/2 "/6 = " / 2

, 958.374 kNM 65.9643 kN.m 0.0688293923 m"/6 0.583 m


2/12

2.139%("" 201.156 KN/M2 3.639


3/12

Shallow Foundation Calculation

1. Data

. )fac 'at: : 8.239 m 1 ft = 30.48 cmDg:. 'at: : 6.100 m

D ; D fac

Df ; #:>at: >g: at:

qt ; c: at: >:g

qc B/40--Cwq

Df/B +Cwγ

)

Cwq

=

Cwγ

=


4/12

2.50 2.50 1.05 18.00 118.13

f:>at: 2.50 2.50 0.45 24.00 67.50

Tta 185.63

@m

o (!+) 1075.23 818.69 709.08 179.39

,- (!+.m) 62.52 90.12 24.85 0.28

(m) 0.06 0.11 0.04 0.00

, (!+.m) 18.63 26.06 91.99 0.28

- (m) 0.02 0.03 0.13 0.00

3. Soil ain" t

) t >t!t:

ma- A / -B . " -1 + 6 / " = 196.04 kN/m2 % a = 215.13 kN/m2

min A / -B . " -1 6 / " = 148.03 kN/m1 Safe

f

ma- 2 , /-3B -" / 2 = 240.5% kN/m2

f 7 & # 2

@m

di Ca 1 Ca 2 Ca 3 Ca 4

q ma -kN/m2 196.04 165.60 123.00 28.81 Safe

q m: -kN/m2 148.03 96.38 103.91 28.59 Safe

-di Ca 1 Ca 2 Ca 3 Ca 4

q ma -kN/m2 1%9.19 141.00 148.%8 28.81 Safe

q m: -kN/m2 164.88 120.99 %8.13 28.59 Safe

(!+#m3)


5/12


6/12


7/12

Sttlmnt Contol

1. latic ttlmnt

)ttm:t fma ;

) =

#t:g w>t ! = 2.50 m#:>at: :gt " = 2.50 m

#:>at: >m:: at - !/" = m = 1.00 m

) a tck: = 3 m

#act =ɑ 0.45

M>> a = 1.50 m

*:ta > at = 0.49

Cm Cc = 0.18

@cm -1/5 t 1/10 Cc C = 0.024

:t wgt γs = 1%.4 kN/m3at: at: ttm:t ;

)c = C g , + F, = 0.01%4 m

1 + ,

3. otal Sttlmnt

Tta ttm:t ;

)t = )c< + )

)t = 2.22 cm

< 2.5 cm, Safe

q B -1μ2/ ' H / 2

= 1 / π (ln ((√(1+ mɑ 2) + m) / ( √( 1+ m2) - m ))+ m . ln (( √( 1 + m2 ) +1) / √(1 + m) -1))

q B -1μ2/ ' H / 2


8/12

Sha chc!

#t:g w>tI ! = 2500 mm

Tck: t = 450 mm

Ctca ct: w>t ! = 2500 mm

c:ct c c = %0 mm

ffct > = 3%0.5 mm

cm: w>t = 450 mm

cm: :gt " = 450 mm

t !a >amt D = 19 mm

c:ct t:gt fc = 25 M t:gt f = 390 Mt: fact J = 0.%5

Mamm (a fc , = 889.60 kN

H = 40

w>t t :gt at f cm: = 1

#a t >amt D = 13 mm

1. One way Shear

a. Ac = 0I33 Lfc ! > = 1146.23 kN 889.60 kN

!. Ac = 0I17 -1 + 2/ Lfc ! > = 1771.45 kN 889.60 kN

c. Ac = 0I083 -H > / ! +2 Lfc ! > = 2285.61 kN 889.60 kN

Safe

2. wo way Shear

'fffct w>t f a t:g aa B = --! + > + - + > 2 = 3282 mm

a. Ac = 0I33 Lfc ! > = 1504.78 kN 889.60 kN

!. Ac = 0I17 -1 + 2/ Lfc ! > = 2325.56 kN 889.60 kN

c. Ac = 0I083 -H > / ! +2 Lfc ! > = 3000.54 kN 889.60 kN

Safe

;infocmnt

1. Fl-ual infocmnt

?:fm a> - , / -B . " q = 1%2.04 kN/m2

?tmat mm:t M = 101.16 kN.mM:. t at 0.0018

m = f / -0.85 fc m = 18.35

@: = @: = 0.3%

@q> t atI 0.00095

@q> t aaI (t = 166%.25 mm2

? D13 200

)t aaI (t = 1659.15 mm2

2. D$lo = fy ψt ψe ψs

ρmin =

-M: / -! >2

ρ =


9/12

f m! tak: a 2.5 1.1 λ √f'c (cb + Ktr)/b

> = 539 mm

ψt! ψe! ψs = 1

λ = 1

D = 550 mm


10/12


11/12


12/12

Documents

Spread Footing Foundation-2