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5/17/2018 195422191 Underground Pipe Stress Check
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Design Calculation Project No.
Project Title:
Checked By: Date: Jul/08/15
Date:
PIPE STRESSES - WHEELS ON RIGID PAVEMENT
Eart Loa!ing
Pipe Sie ! "# i". Co"c. Thick. hc ! $ i".
#.D. ! $% i".
&d ! Cd & Bd'% ! 1(1).) l* / li" +t.
&here: & ! %#& l*/+t'( ,oil u"it &t.
Bd ! ' +t. -actual &idth
Bd ! 5.0 +t. -eectie &idth
Bc ! #.D. ! (.50 +t
Cd ! 1 e' -% ku2-3/Bd
% ku2
! 0.$(4
3 ! #()) +t.
ku2 ! &(%) l* / i"'(
ku2 ! odulu, o+ ,u*6rade reactio"
Saturated clay ! 0.110
#rdi"ary clay ! 0.1(0
Saturated top,oil ! 0.150
Sa"d a"d 6rael ! 0.1)5
Bd a7. ! Tra",itio"al tre"ch &idth +ro ta*le *elo& Ref.
1
! ' +t. Table 13 to 28
Bd ! a7. eectie tra",itio"al tre"ch &idth
*! Pipe Coer ! 3 - +t.
Pipe Dia. 5 ) 9 8 4 10 15 %0
) 1.$% 1.5 1.58 1.)9 1.95 1.95 %.08 %.((
8 1.95 1.8( 1.4% % % %.08 %.$% %.95
1% %.5 %.58 %.95 %.8( %.4% ( (.(( (.)9
1) ( (.08 (.19 (.%5 (.(( (.$% (.8( $.%5
18 (.$% (.5 (.58 (.95 (.8( (.4% $.(( $.95
%$ $.%5 $.(( $.5 $.58 $.)9 $.8( 5.%5 5.)9
(0 $.8( 5.19 5.(( 5.$% 5.58 5.)9 ).19 ).)9
() 5.$% 5.95 ).19 ).%5 ).$% ).58 9.08 9.58
$% 5.4% ).(( ).)9 9.08 9.%5 9.$% 9.4% 8.$%
$8 ).5 ).4% 9.%5 9.)9 8.08 8.19 8.8( 4.((
5$ 9.08 9.$% 9.8( 8.19 8.58 4 4.)9 10.%5
)0 9.)9 8 8.$% 8.95 4.08 4.5 10.5 11.08
or ,hallo& depth, -; $+t. u,e :
&d ! 3 Bc & ! 498.) l* / li" +t.
There+ore &d ! 498.) l* / li" +t. < &t. o+ co"crete !
(50 l* / li". t.
&d total ! 1(%8.) l* / li" +t.
N:=ciil=,pread,h=>?Pipe,=u6 pipe.7l,
Weel Loa!ingro @"diidual Aheel oad,
Tire Pre,,ure ! $& p,i.
@pact actor ! i ! 1.%)9 1.5 at ,ur+ace Ref. 2 , 4.7.2.2.2
1.0 3 ! 5 +t.
k od. o+ ,u*6rade reactio" #&& l* / i"'(
c co"c. ! )"&&&&& p,i Ref. 4
Underground Pipe Stress Check - UGP 2
Bc
Bd
3
P
E
Su5 load,at thi, poi"t
r
P1
P%P(
P$
hc
-
5/17/2018 195422191 Underground Pipe Stress Check
2/9
Aheel P E F co"tact 3 / E / Pre,,. Coe+. Pre,,ure
G - l*,. - +t. - +t. '% - +t. - C +ro *elo& Top Pipe
-l*./
1 %+'&& &(&& 1.4% %.$5 0.45 0.00
&(&$#' Ref 4 1%0$.%
% %+'&& +(&& 1.4% %.$5 0.45 %.8) &(&%)
Table 1 184.9
( %+'&& #%(#& 1.4% %.$5 0.45 8.)9 & 0.0
$ %+'&& #&(&& 1.4% %.$5 0.45 8.18 &
0.0
5 &(&& 0.00 %.$5 0.45 0.00 0.0
) &(&& 0.00 %.$5 0.45 0.00 0.0
Total: ! 1(4(.4
Pressure Coe,cient CC E /
3 / 0.0 0.$ 0.8 1.% 1.) %.0 %.$ %.8 (.% (.)
0.0 0.11( 0.105 0.084 0.0)8 0.0$8 0.0(% 0.0%0 0.011 0.00)
0.00%
0.$ 0.101 0.045 0.08% 0.0)5 0.0$9 0.0(( 0.0%1 0.011 0.00$
0.001
0.8 0.084 0.08$ 0.09$ 0.0)1 0.0$5 0.0(( 0.0%% 0.01% 0.005
0.00%
1.% 0.09) 0.09% 0.0)5 0.05$ 0.0$( 0.0(% 0.0%% 0.01$ 0.008
0.005
1.) 0.0)% 0.054 0.05$ 0.0$9 0.0(4 0.0(0 0.0%% 0.01) 0.011
0.009
%.0 0.051 0.0$4 0.0$) 0.0$% 0.0(5 0.0%8 0.0%% 0.01) 0.011
0.008
%.$ 0.0$( 0.0$1 0.0(4 0.0() 0.0(0 0.0%) 0.0%1 0.01) 0.011
0.008
%.8 0.0(9 0.0() 0.0(( 0.0(1 0.0%9 0.0%( 0.014 0.015 0.011
0.004
(.% 0.0(% 0.0(0 0.0%4 0.0%) 0.0%$ 0.0%1 0.018 0.01$ 0.011
0.004
(.) 0.0%9 0.0%) 0.0%5 0.0%( 0.0%1 0.014 0.01) 0.01$ 0.011
0.004
$.0 0.0%$ 0.0%( 0.0%% 0.0%0 0.014 0.018 0.015 0.01( 0.011
0.004
$.$ 0.0%0 0.0%0 0.014 0.018 0.019 0.015 0.01$ 0.01% 0.010
0.004
$.8 0.018 0.019 0.019 0.01) 0.015 0.01( 0.01% 0.011 0.004
0.0085.% 0.015 0.015 0.01$ 0.01$ 0.01( 0.01% 0.011 0.010 0.008
0.009
5.) 0.01$ 0.01( 0.01( 0.01% 0.011 0.010 0.010 0.004 0.008
0.009
).0 0.01% 0.01% 0.011 0.011 0.010 0.004 0.004 0.008 0.009
0.009
Total Aheel Pre,,ure at Top o+ Pipe ! 1(4(.4 l* / +t.'%
Pie Stresses
Pipe Dia. #.D. ! $% i". Hou"62, od. !
)&&&&&&& p,i.
Aall thick"e,, t ! &('& i". Poi,,o"2, Iatio !
&()
Pipe ?rade ! ./' Coe+. Theral 7p. !
&(&&&&&/' per de6
SHS ! /'&&& p,i.
Pipe #perati"6 Pre,. ! %&&&(& p,i. Tep. Pipe
@",tallatio" ! %& de6. SHS de,i6" +actor ! &($ a7./i".
#perati"6 Tep. ! %+& de6.
Circu01erential Stress Due to Eart Loa!
Ref. 2
She ! he Be e lada D ! %95).( p,i. &here: he ! ,oil/pipe
,ti"e,, coe+. ! $500 Fig. 3
t / d ! 0.011405 (set E' = 1
Kalue *y Ie+ 1 -a*oe ! 498.) p,i. Be ! 0.%1 Fig. 4
&here 3/Bd ! 0.))591$ (Soil Type fo! t!e
>,e lar6e,t Kalue ,et S3e ! %95).( p,i. e ! 1 -+or tre"ched
co",tuctio"
< &t. Co"crete ! She tot. ! %95).4 p,i. lada ! u"it
&t. Soil ! 1%0 l* / +t'(
D ! $% i"
Weel Loa! Stress
& ! 4.)8 p,i. +ro a*oe
&here: 3h ! circu+. ,ti"e,, +actor ! 1%.5 Fig. 14
Cyclic Circu+ere"tial Stre,, &here: t / d ! 0.011405 Set E!
= 1
S3h ! 3h ?3h I i & ?3h ! 6eoetry +actor ! &(2/ +ro i6.
15
! 8).10 p,i.
GH 3L ,oil coer - +t. Fig. 1%Pipe dia. ( $ ) 8 10
Cyclic o"6itudi"al Stre,, ) 1.$5 1.15 0.4 0.9
1% 1.%8 1.05 0.85 0.)9
Sh ! h ?h I i & 18 1.08 0.45 0.99 0.)(
! 55.4) p,i. %$ 1.1% 0.85 0.9( 0.58
(0 1.09 0.8 0.)8 0.5$() 1.01 0.9) 0.)$ 0.5
Internal Pressure Circu01erential Stress $% 0.4) 0.9% 0.)
0.$)
$8 0.4% 0.)4 0.55 0.$(
Shi ! p -D t / % t 5$ 0.89 0.)) 0.51 0.$1
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5/17/2018 195422191 Underground Pipe Stress Check
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! $1500 p,i. )0 0.85 0.)( 0.$9 0.(8
I ! paee"t +actor ! &(2& Ref. 2 ! F7le co"6uratio" !
&(/' Table
Li0its o1 Calculate! Stressh ! lo"6. Sti"e,, +actor ! 10 Fig.
1
1. Check Pre,,ure Stre,, u,i"6 Barlo& +orula &here t / d
! 0.01140$8 Set E
?h ! 6eoetry +actor ! &(+$ +ro i6. 19
S3i -Barlo& ! p D / % t
; or ! T SHS -"atural 6a, GL 3L ,oil coer - +t. Fig. 1
; or ! SHS -liOuid, Pipe dia. ( $ ) 8 10
) 1.55 1.$5 1.(5 1.%5
&here: ! de,i6" +actor ! &($ Ref. 3 10 1.%( 1.1 1
0.4
! joi"t +actor ! %(& Ref. 2 1% 1.15 1.0% 0.88 0.8
T ! tep. derati"6 ! %(& 18 1.1 0.4( 0.8( 0.9
%$ 1.0% 0.89 0.95 0.59
(0 0.4$ 0.8 0.)4 0.5(
S3i -Barlo& ! $%000 p,i () 0.8) 0.9( 0.)( 0.$8
; ! 5%000 -"at. 6a, # $% 0.98 0.)5 0.58 0.$$
; ! 5%000 -liOuid, # $8 0.9 0.58 0.5% 0.$
5$ 0.)% 0.51 0.$) 0.()
)0 0.5$ 0.$$ 0.$1 0.(%
%. Check Total ectie Stre,,
Se !SIT Q 1/% - -S1 S%'% < -S% S('% < -S( S1'%R ; or !
SH
S1 ! S3e < S3r < S3i ! $$($( p,i
S% ! Sr , Coe+. Theral 7p. -T% T1 < poi,o", ratio - S3e <
S3i ! $$5(( p,i
S( ! P ! 1000.0 p,i
S e ! (%1(0 p,i ; or ! 5%000 p,i O3 -- Stress 4itin
allo4a5les
Ie+ere"ce,:
1. Co"crete Pipe De,i6" a"ual FCPF 5th Pri"ti"6 Ju"e 1480
%. FP@ Iecoe"ded Practice 110% Steel Pipeli"e, Cro,,i"6
Iailroad, a"d 3i6h&ay, )th dititio" 144(
(. CFN/CSF 18( 40
$. PCF Kertical Pre,,ure o" Culert, >"der Aheel oad, o"
Co"crete Paee"t Sla*,
5. PCF Co"crete loor, o" ?rou"d
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5/17/2018 195422191 Underground Pipe Stress Check
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Design Calculation Project No.Project Title: 01$19(
Checked By: Date: Jul/08/15
Date:
-
ar oa ng
Pipe Sie ! "# i".
#.D. ! $% i".
&d ! Cd & Bd'% ! 1))).) l* / li" +t. Ref. 1
& ere: & ! %#& / t'( ,oi u"it &t.
Bd ! ' +t. -actual &idth
Bd ! 5.0 +t. -eectie &idth
Bc ! #.D. ! (.50 +t
Cd ! 1 e' -% ku2-3/Bd
% ku2
! 0.55)
3 ! ) +t.
ku2 ! &(%) l* / i"'(
ku2 ! odulu, o+ ,u*6rade reactio"
Saturated clay ! 0.110
#rdi"ary clay ! 0.1(0
Saturated top,oil ! 0.150
Sa"d a"d 6rael ! 0.1)5
Bd a7. ! Tra",itio"al tre"ch &idth +ro ta*le *elo&
! ' +t. Ta
Bd ! a7. eectie tra",itio"al tre"ch &idth
*! Pipe Coer ! 3 - +t.
Pipe Dia. 5 ) 9 8 4 10 15 %0
) 1.$% 1.5 1.58 1.)9 1.95 1.95 %.08 %.((
8 1.95 1.8( 1.4% % % %.08 %.$% %.95
1% %.5 %.58 %.95 %.8( %.4% ( (.(( (.)9
1) ( (.08 (.19 (.%5 (.(( (.$% (.8( $.%5
18 (.$% (.5 (.58 (.95 (.8( (.4% $.(( $.95
%$ $.%5 $.(( $.5 $.58 $.)9 $.8( 5.%5 5.)9
(0 $.8( 5.19 5.(( 5.$% 5.58 5.)9 ).19 ).)9
() 5.$% 5.95 ).19 ).%5 ).$% ).58 9.08 9.58
$% 5.4% ).(( ).)9 9.08 9.%5 9.$% 9.4% 8.$%
$8 ).5 ).4% 9.%5 9.)9 8.08 8.19 8.8( 4.((
5$ 9.08 9.$% 9.8( 8.19 8.58 4 4.)9 10.%5)0 9.)9 8 8.$% 8.95 4.08
4.5 10.5 11.08
or ,hallo& depth, -; $+t. u,e :
&d ! 3 Bc & ! 1%)0.0 l* / li" +t.
There+ore &d ! 1%)0.0 l* / li" +t.
N:=ciil=,pread,h=>?Pipe,=u6 pipe.7l,
Underground Pipe Stress Check - UGP 1
Bc
Bd
P
E
Su5 load,
P1P$
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5/17/2018 195422191 Underground Pipe Stress Check
5/9
ee oa ngro @"diidual Aheel oad,
Tire Pre,,ure ! $& p,i.
@pact actor ! i ! 1.%
1.5 at ,ur+ace Ref. 2 , 4.7.2.2.2
1.0 3 ! 5 +t.
Ref. 4
Aheel P E F co"tact r 3 / r E / r Pre,,. Coe+.G - l*,. - +t. -
+t. '% - +t. - C +ro *elo& Top
1 %+'&& &(&& 1.8% 0.9) (.4$ 0.00
&(&$+
% %+'&& +(&& 1.8% 0.9) (.4$ 4.14 &(&
( %+'&& #%(#& 1.8% 0.9) (.4$ %9.8(
&(&&%
$ %+'&& #&(&& 1.8% 0.9) (.4$ %).%)
&(&&%
5 &(&& 0.00 0.00 GD@K/0 GD@K/0
) &(&& 0.00 0.00 GD@K/0 GD@K/0
Total: !
Pressure Coe,cient C
C E / r
3 / r 0.0 1.0 %.0 (.0 $.0 5.0 ).0 9.0
0.0 1.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000
0.5 0.411 0.$%5 0.010 0.001 0.000 0.000 0.000 0.0001.0 0.)$)
0.(50 0.500 0.005 0.001 0.000 0.000 0.000
1.5 0.$%$ 0.%50 0.095 0.01% 0.00$ 0.001 0.000 0.000
%.0 0.%8$ 0.148 0.095 0.0%0 0.009 0.00( 0.001 0.001
%.5 0.%00 0.1$5 0.090 0.0%) 0.010 0.00$ 0.00% 0.001
(.0 0.1$) 0.110 0.0)) 0.0%4 0.01( 0.00) 0.00( 0.00%
(.5 0.110 0.101 0.0)0 0.0(1 0.015 0.008 0.00$ 0.00%
$.0 0.089 0.081 0.05$ 0.0(1 0.019 0.004 0.005 0.00(
5.0 0.059 0.05$ 0.0$1 0.0%8 0.019 0.011 0.00) 0.00$
).0 0.0$0 0.0(4 0.0(% 0.0%$ 0.019 0.010 0.009 0.005
9.0 0.0(0 0.0%4 0.0%5 0.0%0 0.015 0.011 0.008 0.005
8.0 0.0%( 0.0%( 0.0%0 0.019 0.01( 0.010 0.008 0.00)
4.0 0.018 0.018 0.01) 0.01$ 0.01% 0.004 0.009 0.00)
10.0 0.015 0.015 0.01$ 0.01% 0.010 0.004 0.009 0.00)
Total Aheel Pre,,ure at Top o+ Pipe ! 1%58.0 l* / +t.'%
e resses
Pipe Dia. #.D. ! $% i". Hou"62, od. !
)&&&&&&& p,i.
Aall thick"e,, t ! &('& i". Poi,,o"2, Iatio !
&()
Pipe ?rade ! ./' Coe+. Theral 7p. !
&(&&&&&/' per de6
SHS ! /'&&& p,i.
Pipe #perati"6 Pre,. ! %&&&(& p,i. Tep. Pipe
@",tallatio" ! %& de6.
SHS de,i6" +actor ! &($ a7./i". #perati"6 Tep. ! %+&
de6.
Circu01erential Stress Due to Eart Loa!
She ! he Be e lada D ! ()95.0 p,i. &here: he ! ,oil/pipe
,ti"e,, coe+. ! $500
t / d ! 0.011405
Kalue *y Ie+ 1 -a*oe ! 1%)0.0 p,i. Be ! 0.%8
&here 3/Bd ! 0.8591$( (Soi>,e lar6e,t Kalue ,et She !
()95.0 p,i. e ! 1 -+or tre"ched co",tuctio
lada ! u"it &t. Soil ! 1%0 l* / +t'(
D ! $% i"
Weel Loa! Stress
& ! 8.9$ p,i. +ro a*oe
E
Su5 load,at thi, poi"t
r
P1
P%P(
P$
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5/17/2018 195422191 Underground Pipe Stress Check
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&here: 3h ! circu+. ,ti"e,, +actor ! 1%.5
Cyclic Circu+ere"tial Stre,, &here: t / d ! 0.011405
S3h ! 3h ?3h I i & ?3h ! 6eoetry +actor ! &(2/ +ro i6.
15
! 84.45 p,i.
GH 3L ,oil coer - +t.
Pipe dia. ( $ ) 8 10
Cyclic o"6itudi"al Stre,, ) 1.$5 1.15 0.4 0.9
1% 1.%8 1.05 0.85 0.)9Sh ! h ?h I i & 18 1.08 0.45 0.99
0.)(
! 58.$) p,i. %$ 1.1% 0.85 0.9( 0.58
(0 1.09 0.8 0.)8 0.5$
() 1.01 0.9) 0.)$ 0.5
Internal Pressure Circu01erential Stress $% 0.4) 0.9% 0.)
0.$)
$8 0.4% 0.)4 0.55 0.$(
Shi ! p -D t / % t 5$ 0.89 0.)) 0.51 0.$1
! $1500 p,i. )0 0.85 0.)( 0.$9 0.(8
I ! paee"t +actor ! %(%&
! F7le co"6uratio" ! &(/'
0 s o a cu a e ress
h ! lo"6. Sti"e,, +actor ! 101. C ec Pre,,ure Stre,, u,i"6 Bar
o& oru a &here t / d ! 0.01140$8
?h ! 6eoetry +actor ! &(+$ +ro i6. 19
S3i -Barlo& ! p D / % t
; or ! T SHS -"atural 6a, GL 3L ,oil coer - +t.
; or ! SHS -liOuid, Pipe dia. ( $ ) 8 10
) 1.55 1.$5 1.(5 1.%5
&here: ! de,i6" +actor ! &($ Ref. 3 10 1.%( 1.1 1
0.4
! joi"t +actor ! %(& Ref. 2 1% 1.15 1.0% 0.88 0.8
T ! tep. erati"6 ! %(& 18 1.1 0.4( 0.8( 0.9
%$ 1.0% 0.89 0.95 0.59
(0 0.4$ 0.8 0.)4 0.5(
S3i -Barlo& ! $%000 p,i () 0.8) 0.9( 0.)( 0.$8
; ! 5%000 -"at. 6a, # $% 0.98 0.)5 0.58 0.$$
; ! 5%000 -liOuid, # $8 0.9 0.58 0.5% 0.$
5$ 0.)% 0.51 0.$) 0.()
)0 0.5$ 0.$$ 0.$1 0.(%
%. C ec Tota ectie Stre,,
Se !SIT Q 1/% - -S1 S%'% < -S% S('% < -S( S1'%R ; or !
SH
S1 ! S3e < S3r < S3i ! $5%)5 p,i
S% ! Sr , Coe+. Theral 7p. -T% T1 < poi,o", ratio - S3e <
S3i ! $$811 p,i
S( ! P ! 1000.0 p,i
S e ! (%555 p,i ; or ! 5%000 p,i O3 -- Stress 4itin
allo4a5les
Ie+ere"ce,:
1. Co"crete Pipe De,i6" a"ual FCPF 5th Pri"ti"6 Ju"e 1480
%. FP@ Iecoe"ded Practice 110% Steel Pipeli"e, Cro,,i"6
Iailroad, a"d 3i6h&ay, )th dititio" 144(
(. CFN/CSF 18( 40
$. PCF Kertical Pre,,ure o" Culert, >"der Aheel oad, o"
Co"crete Paee"t Sla*,
-
5/17/2018 195422191 Underground Pipe Stress Check
7/9
Ref. 1
le 13 to 28
-1 o+ (
c
3
P
load,
P1
-
5/17/2018 195422191 Underground Pipe Stress Check
8/9
Pre,,urePipe -l*./+t'%
1%0%.9
%9.)
1(.8
1(.8
0.0
0.0
1%58.0
Ref. 2
Fig. 3
(set E' = 1.0)
Fig. 4
Type fo! t!e"#$es)
"
-% o+ (
load,hi, poi"t
P1
P%
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5/17/2018 195422191 Underground Pipe Stress Check
9/9
Fig. 14
Set E! = 10
Fig. 1%
Ref. 2 !!M
Table 2
Fig. 1&
Set E! = 10
Fig. 17
-( o+ (