secant pile RC retaining wall.xlsx

subject

RETAINING WALL ………………………….. computed PP checked …………………………..

CALCULATION SHEET

REF

job ……… job no …………… date …… page

CALCULATION

DESIGN OF RETAINING WALL

DIMENTIONS

ret ht :-

H=

7.15 m

depth :-

D=

12 m

depth to water table :-

Dw =

2.3 m

submerged depth :-

Dsub =

16.85 m

H=

19.2 m

total ht :-

soil report

wall tkness:-

300 mm

Base tkness

0 mm

d wall :-

225 mm

d Base :-

0 mm

DATA soil density :-

ysoil =

18 kN/m3

saturated soil density :-

ysat =

21 kN/m3

density of concrete :-

ycon =

24 kN/m3

water density :-

yw =

9.81 kN/m3

friction angle :-

q=

30 deg

coeff. of active pressure :-

ka =

0.33

surcharge :-

q=

100 kN/m2

water ht. :-

Hw=

16.85 m

loads on wall Active Forces

Force kN/ m run

m

Force due to soil:-

F1 =

1/2*kaysoilh =

15.7

17.617

Force due to submerged soil:-

F2 =

kaysoilh*Dsub =

230.20

8.425

Force due to submerged soil:-

F3 =

1/2*kaysubh2 =

524.22

5.617

Force due to surcharge:-

F4 =

kaqh =

631.95

9.575

Force due to water:-

Fwa =

ywh =

1392.64

5.617

GIVE moment :-

Ht. from base

MT =

0 kNm

Mmax (ser)=

26646.96 kNm

Mmax (ult)=

39970.44 kNm

2

subject

RETAINING WALL ………………………….. computed PP checked …………………………..

CALCULATION SHEET

REF

CALCULATION

U1 Mmax (ult)= M/bd2 = GIVE

p=

39970.44 kNm 789.54 0.130

As =

293 mm2

Mmax (ser)=

26646.96 kNm

S1

M/bd = 2

GIVE

p= As =

526.36 0.0020 450 mm2

S3 GIVE

dia. of thermal r/f :P= As =

0.0034 503 mm2

10 mm

job ………………… job no …………… date ……………… page

move n pick job no ………………………. 1/7/2013

1

of pages

OUTPUT

BM kNm 276.78 1939.47 2944.37 6050.92 7821.99 19033.54

job ………………………….. job no ………………………. date ………………………….. of pages

OUTPUT