Not Designed for Engineering Practice Please see notes
Pipe Geometry A Pipe 'nner iameter ( Di mm) T t mm) A $ominal *all &hic+ness ( t D A#erage %einforced %einforced *all *all &hic+ness ( t tr mm) r mm) T U Design Condition P N I esign Pressure ( Pd Pd MPa) MPa)
n o i t a u l a v E d n a n o i t a l External Pressure (Mpa) (Mpa) u Applied External c l a C Safetay Factor for Vacuum Condition Allo!a"le External External Collapse Pressure Pressure (Mpa) (Mpa)
0.031
Length of n
%esult
0.048
Applied Axial
pass
&emperature
1-External Compressive Pressure VS (D/tr) 0.45 0.40 0.35
h p a r G
0.30 Pressure (MPa) 0.25 0.20
Method of Ca
Fe=1.5 Fe=3 External Pressure
-Long
. 0.10 0.05 0.00 0
50
100
150
200
250
300
350
D/tr
Lo#al $oop stress due to saddle supporting
n o i t a u l a v E d n a n o i t a l u c l a C
support span (m)
4.00
saddle angle (deg)
saddle angle
!idth of the saddle support (mm)
Local hoop stress (Mpa) Allo!a"le (Mpa)
%esult
%-Lo#al &oop ('xial) Stress vs Saddle 'ngle
h p a r G
support span
250
!idth of the s
53.09
local axial st
92.63
Allo!a"le (M
pass
%esult
Local Stress (MPa)
Saddle Angle (deg)
o$al%oo" &tress % o o" & t re s s A l o wa b e l
o$alAx#al&tress A x# a l &t re s s A l o wa b le
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