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ASME VIII Div.1 Addenda 11a
2.7
Circular flanges with hub: integral with hub slope 1/3 max: WN or LWN type: to internal pressure: gasket laying inside inner edge of bolt holes: with bolt spacing correction
nomeUnit
nomePart
Fig
boltnbDiBCAspecMaterialFspecMaterialWspecMaterialBtngothg1grooverisaltotfteffdgidgoCAgaskfacingbobbliqheightliqdensGhhhGhDhT
1
designPress
Design pressure: at top:
2
localPress
Design pressure: at location:
3
designTemp
Design temperature:
4
MAWP
Max.allow.working pressure: at top:
MATERIALS
FLANGE
WALL
BOLTS
5
Standard
Standard:
6
ProductB
ProductW
ProductF
Product form:
7
allowStressB
allowStressW
allowStressF
Unit for: Stress
Allow.stress: at design temperature:
8
allowStressaB
allowStressaW
allowStressaF
''
Allow.stress: at room temperature:
9
 
 
EF
Unit for: Elastic modulus
Elastic modulus: at temperature:
JOINT
10
mm
Gasket factor:
11
yy
Gasket seating stress: minimum:
12
db
Nominal bolt diameter:
13
Bs
Bolt spacing:
14
BSC
Bolt spacing factor:
15
Abolt
Effective bolt cross section area: per bolt:
16
Ab
Effective bolt cross section area: total:
FLANGE RIGIDITY
17
J
Flange rigidity index:
RESULT
18
result
Final result:
www.xcalcs.com
numTotPag
numPag1
(follows on next page)
 
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ASME VIII Div.1 Addenda 11a
2.7
Circular flanges with hub: integral with hub slope 1/3 max: WN or LWN type: to internal pressure: gasket laying inside inner edge of bolt holes: with bolt spacing correction
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(follows from previous page)
FACTORS
19
T
ho
K
20
U
ff
V
21
Y
Z
F
22
dd
ee
L
 
OPERATING
GASK.SEATING
23
 
H
Unit for: Load
Hydrostatic end force: total:
24
 
HHD
''
Hydrostatic end force: inside:
25
 
HHT
''
Hydrostatic end force: annular:
26
 
HHp
''
Gasket compression load:
27
Wm2
Wm1
''
Minimum bolt load:
28
Am2
Am1
Unit for: Area
Required bolt section:
29
resultBolt
Result for: Bolt stress:
30
W2
W1
Unit for: Load
Design bolt load:
31
Mo2
Mo1
Unit for: Moment
Design flange moment:
32
SH2
SH1
Unit for: Stress
Hub stress: longitudinal:
33
SHa2
SHa1
''
Hub stress: allowable:
34
resultHub2
resultHub1
Result for: Hub stress:
35
SR2
SR1
''
Radial flange stress:
36
ST2
ST1
''
Tangential flange stress:
37
SHR2
SHR1
''
(SH+SR)/2:
38
STR2
STR1
''
(ST+SR)/2:
39
Sa2
Sa1
''
Allowable stress for flange:
40
resultFlg2
resultFlg1
Result for: Flange stress:
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numTotPag
numPag2

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2.7: integral
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2.7: loose
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Bolt spacing corr. (5)
2.7: int.: w.bolt correction
2.7: l.hub: w.bolt correction
2.7: loose: w.bolt correction
2.7: lap: w.bolt correction
2.7: split ring: +bolt corr.
Appendix 24 (2)
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