Fictitious Flange Thickness
(in accordance with British Standards PD 5500:2003, issue 1, January 1997, Fig. 3.8.10)
Input data
Outside flange diameter
A
mm
Bolt circle diameter
C
mm
Minimum diameter at gasket face
A
min
mm
Maximum flange thickness
t
max
mm
Minimum flange thickness
t
min
mm
Angle
α
°
Calculation
Distance between:
outside diameter and minimum diameter at gasket face
d
A
mm
bolt circle diameter and minimum diameter at gasket face
d
C
mm
maximum flange thickness and minimum flange thickness
d
tA
mm
maximum flange thickness and flange thickness at bolt circle diameter
d
tC
mm
Results
Minimum flange thickness
t
min
mm
Angle
α
(see Fig.1)
°
Fictitious flange thickness (flange thickness at bolt circle diameter)
t
F
mm
Fig.1 - Calculation of fictitious flange thickness
ASCII DXF
Binary DXF
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