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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
Product form:
ProductB ProductW ProductF
7
Allow.stress: at design temperature:
allowStressB allowStressW allowStressF Unit for: Stress
8
Allow.stress: at room temperature:
allowStressaB allowStressaW allowStressaF
''
9
Elastic modulus: at temperature:
 
 
EF Unit for: Elastic modulus
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 numPag1 numTotPag (follows on next page)
 
nomeDoc nomeDocNum
nomeRedatto nomeContr nomeRev dataEmesso
nomeVessel nomeItem
nomePlant um_visua
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
(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
Hydrostatic end force: total:
 
H Unit for: Load
21
Hydrostatic end force: inside:
 
HHD
''
22
Hydrostatic end force: annular:
 
HHT
''
23
Gasket compression load:
 
HHp
''
24
Minimum bolt load:
Wm2 Wm1
''
25
Required bolt section:
Am2 Am1 Unit for: Area
26
resultBolt
Result for: Bolt stress:
27
Design bolt load:
W2 W1 Unit for: Load
28
Design flange moment:
Mo2 Mo1 Unit for: Moment
29
Hub stress: longitudinal:
SH2 SH1 Unit for: Stress
30
Hub stress: allowable:
SHa2 SHa1
''
31
Result for: Hub stress:
resultHub2 resultHub1
32
Radial flange stress:
SR2 SR1
''
33
Tangential flange stress:
ST2 ST1
''
34
(SH+SR)/2:
SHR2 SHR1
''
35
(ST+SR)/2:
STR2 STR1
''
36
Allowable stress for flange:
Sa2 Sa1
''
37
Result for: Flange stress:
resultFlg2 resultFlg1
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