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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
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
Abolt
Effective bolt cross section area: per bolt:
13
Ab
Effective bolt cross section area: total:
FLANGE RIGIDITY
14
J
Flange rigidity index:
RESULT
15
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
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(follows from previous page)
FACTORS
16
T
ho
K
17
U
ff
V
18
Y
Z
F
19
dd
ee
L
 
OPERATING
GASK.SEATING
20
 
H
Unit for: Load
Hydrostatic end force: total:
21
 
HHD
''
Hydrostatic end force: inside:
22
 
HHT
''
Hydrostatic end force: annular:
23
 
HHp
''
Gasket compression load:
24
Wm2
Wm1
''
Minimum bolt load:
25
Am2
Am1
Unit for: Area
Required bolt section:
26
resultBolt
Result for: Bolt stress:
27
W2
W1
Unit for: Load
Design bolt load:
28
Mo2
Mo1
Unit for: Moment
Design flange moment:
29
SH2
SH1
Unit for: Stress
Hub stress: longitudinal:
30
SHa2
SHa1
''
Hub stress: allowable:
31
resultHub2
resultHub1
Result for: Hub stress:
32
SR2
SR1
''
Radial flange stress:
33
ST2
ST1
''
Tangential flange stress:
34
SHR2
SHR1
''
(SH+SR)/2:
35
STR2
STR1
''
(ST+SR)/2:
36
Sa2
Sa1
''
Allowable stress for flange:
37
resultFlg2
resultFlg1
Result for: Flange stress:
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numTotPag
numPag2

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