Page 253 - Pressure Vessel Design Manual

Special Designs 231

Horizontal Stiffener Design A, = t,h

A, = ttJ

tsh3
Is =-
12
tlJ
Asy +-
c --
‘-AS+A, 2
b

an62.4S, PIl lb2
PI, = -144- M =- 8 = lesser of 32th or stiffener spacing

Stresses in BaffleIStiffener

Vertical Stiffener Design
a, = MCS
I
~
a62.4Sg
p=144
Size Welds Attaching Stiffeners
2.5pla4
s=-
384EI
For E70XX Welds:
I M = .0642pla2 VdY
w= 11,200In
pla
V=-
3
Table 4-9
Intermittent Welds
Percent of
Continuous Length of Intermittent Welds and
Weld Distance Between Centers

75% 34
Properties of Stiffener 66 4-6
60 3-5
L c L 57 4-7
1 1
50 2-4 34 4-8
44 4-9
43 I I 3-7 I
~~ ~
40 2-5 4-1 0
37 3-8
33 2-6 3-9 4-1 2