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COMPOUND INTEREST
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compound interest
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Compound Wall Data :There is a filling of 1.2 m in proposed site from neighbor site level. Type of soil is murmur at 1.8 m deep below the neighbors plot level. nd soil !"# is ta$en as 2% T&m' at depth of 1.8m #ompound wall is designed as retaining (um (ompound wall. !oil density is ta$en as 22%% $g&m) * soil + water unit weight , ngle of repose ta$en ta$en as 2 5 * assumed . !elf weight of stru(ture !l. 6o.
rea
a b ( d e f g
unit wt %.%2 %.28 %.4 %.4 %.4 %. %.81
moment arm
2%% 2%%% 24%% 24%% 24%% 24%% 24%%
load
moment
%.% %.12 %./ %./8 %.4 %. %.8
4/.0 2 1%8% 1%8% 12 184 144
4.%82 /.48 /24 4% 8/.2 801.2 1/12.2
total
00.0
//.12
!oil intensity !l. 6o.
rea
s1 s2 s/ s4
unit wt %.4 %./ %.20 %.1
moment arm
22%% 22%% 22%% 22%%
Total load
10285.75
Total Moment
6432.512
moment
%.8 1.% 1.1/ 1.2/
% 02 4 //%
.2 8/1. 8.2 4%4.2
total
20%
28./
esisting moment
Design Data:Density of soil ta$en :ø :!"# of so soil :2% T&m'
22%% $g&m) 2 3
verturning verturning pressure due to soil :w h³ 7
load
1 - sin ø] 1 + sin ø]
Page 1 of 4
w9 h9 ø9
22%% / 2
!in 2 9 1 - sin 2 9 1 + sin 2 9
%.42 %.8 1.42
**1-sinB,&*1+sinB,, 9 %.41 verturning 9
4018.18 $g.m
1. Check for overturnig :esisting moment 1. 7 overturning moment due to soil 4/2.12
>
%20.20
;a(tor of safety 9 resisting moment & overturning moment 1. 1. Therefore< safe 2. Check for Sability :;a(tor of safety 9 * C 7 = , & p C9 =9
%. 1%28.0
p 9 *1&/, 7 w 7 *h'&/,
9
//%% $g&m
;a(tor of safety
1. 1.
Therefore< safe 3. Check for Eccentricity :e9*b&2,->
> 9 total moment & total load > 9 %./
b *m, 9 1./ e 9
%.%
? b&
%.2/
Therefore< safe 4. Intensity of pressure at base :p9*=&b,7*1@**7e,&b,, p *maA, 9
2./%2
$g&m'
p *min, 9
/8.84
$g&m'
p *maA, and p *min, are less than !"# of soil.
Therefore< safe
Page 2 of 4
Compound Wall #oping in P## 1:2:4 a "ri($ =or$ in #. 1:
%.2/ 1.2
6ote : 1. ll dimensions are in eters. 2. 6ot to s(ale
b
P## 1:2:4
%.1
!oil filled up
s1 %.0 Nei!"o# $ite
c =eep holes %.
1.2
d %.&
s2
%. %.0 %.
e
#oursed rubble masonry in #. 1: s/
%.
%.
f
s4 1.1
%.
g 1./
P## in 1:4:8
%.1 1. 6ote:1. "ri($ wor$ in superstru(ture to be in # 1:. 2. "ri($ wall to be plastered in # 1:<1 mm thi($. /. #oursed rubble masonry in # 1:. nd ra($ing finish to be provided. 4. "ond stone shall be provided at every 1.2 m hori>ontally and %.m verti(ally staggered at every (ourse. . #onstru(tion Eoint to be provided at every interval of m< 2% mm thi($. . 0 mm dia pipe at 1 m interval to be provided hori>ontally and verti(ally staggered. 0. =eep hole should be given a fall of 1.8 from ba($ of (ompound wall 8. inimum height of weep hole from the base is /%% mm above the ground level. . ny (hanges in details to be (onsulted with respe(tive FAe(utive Fngineer.
