Eccentric Footing

ECCENTRIC FOOTING DESIGN (a! of Conc(!t! fck, N/mm2 20

(a! of St!!l fy, N/mm2 415

S!lf t -f o%nation kN 32.4

t of 'oil ao! o%nation Kn 110.4

#om!nt %! to !cc!nt(icity kNm 53.$1

 Total  Total loa ", kN 223.8

SBC of Soil kN/m2 150

 Total  Total 7oa on fo%nation !c!*t aial loa

kN 142.8

Si! of ootin+ a''%m! B, m D, m 1.8 2.4

C of footin+ f(om to* m 1.2

C of col%mn f(om to* m 0.55

cc!nt(ici #aim%m Total mom!nt ty "(!''%(! #, kNm m kN/m2 103.$1 0.46 112.01

 Tickn!'' of ootin+ mm 30 0

C of loa f(om to* m 0.96 ootin+ contact l!n+t m 2.22

Safe Top Reinforcement required

:nt!n'ity at ot!( !n kN/m2 0

#om!nt, #% &'t, (!)%i(! kNm mm2 92.01 1125

&'t, min mm2 360

250

Dia of a( *(oi! mm 12

250 250

C(itical S!ction o( -n!ay S!a(

1.85

S*acin+ mm 10 1

1.8 C!ck fo( S!a( 7oa comin+ on footin+ %! S!a( > to 'oil = fo%nation c(itical fac! ζv kN/m kN N/mm2 < 33.6 15.$8 0.09 Safe in shear

*t

;

0.448 5.183495$

Col%mn Dim!n'ion , m , m 0.3 0.3

&ial 7oa D!*t of D!n'ity of f(om footin+ Soil Col%mn

m 1.$5

kn/m3 18

cc!nt(icit y f(om C ?!cti! of footin+ !*t m mm 0.24 250

&'t *(oi! mm2 1120 1$5.82

84.26 2.4

kN 81

#om!nt fac! = Dia of a( f(om o%natio to ! col%mn n *(oi! kNm mm mm 50 400 12

ζc

N/mm2 0.45$8602

20 25 30 35 40 45 50

250 415 500