CIS ASME TÜV Thüringen Group CIS
CIS ASME TÜV Thüringen Group
 
Ohne_Titel_1

Online Calculation-Tools

 
ASME Code - Allowable Stresses
  • Stress Values- Section II, Table 1A
  • Stress Values- Section II, Table 1B
  • Stress Values- Section II, Table 3
  • Carbon Steel - Example
  • High Alloy Steel - Example
Shells and Heads
  • Cylinder under internal pressure
  • Elliptical head under internal pressure
  • Torispherical head under internal pressure
  • Klöpperboden (DIN28011) under internal pressure
  • Korbbogenboden (DIN28013) under int. pressure
  • Hemispherical head under internal pressure
  • Flat head (circular) under internal pressure
  • Flat head (noncircular) under internal pressure
Flanges
  • Equivalent flange pressure due to ext. loads
  • Loose-type flange under internal pressure
  • ASME B16.5 Flanges
Determination of foming strains
  • Forming strain of a cylinder
  • Forming strain of a head
  • Forming strain of tube or pipe bends


Tips and Tricks
 
Why not join one of our ASME Code design workshops in:

December 2018
Brussels, Belgium
(English)

October 2018
Hamburg, Germany
(German)
 

Calculation of torispherical heads - ASME Code Section VIII, Division 1

CIS ASME TÜV Thüringen Group
Print

internal pressure P:

bar CIS ASME TÜV Thüringen Group
mm
mm

minimal wallthickness tmin:

mm

allowable stress S:

N/mm2

joint efficiency E:

-

inside knuckle radius r:

mm  

Intermediate Results

Results

  I [App.1-4(3)] II [App.1-4(3)]    
Online Rechner ASME Code Online Rechner ASME Code    

required wall-thickness treq:

   

design margin:

   

Input Errors

Notes

Torispherical heads with knuckle and crown radius are adressed in paragraph UG-32 of ASME Code Section VIII, Division 1. This special formula in the general UG part of the ASME Code only applies to 6% heads whose knuckle radius is 0,06 times Do. For all other torispherical heads the general formula of Appendix 1-4(d) is used.

Please note that the minimum length requirements of the straight flange as shown in Fig. UW-13-1 sketch (l) and (m) must be met if the wallthickness of the heads exceeds that of the attached cylinder(min[3xth; 38 mm]). If, however, the head is inserted into a flange ring, the minimum length of the straight flange is addressed in Appendix 1, Fig. 1-6, sketch (a), i.e. insertion length + leg dimension of the fillet weld at the backface of a loose flange, and insertion length + leg dimension of the fillet weld + 13 mm for integral flanges respectively.

P = MAWP + hydrostatic head
S = allowable stress according to ASME Code Section II, Part D
E = efficiency factor E = 1, if seamless and meeting UW-11(a)(5)(b)
efficiency factor E = 0,85, if not meeting UW-11(a)(5)(b)
efficiency factor according to UW-12, if welded

If you have further questions please contact us directly or start a discussion in our ASME Code Forum. To stay informed about any changes and amendments to our websites, upcoming seminars and the latest information about the ASME Code, please feel free to subscribe our newsletter.

These calculation tools are intended to be used for information and guidance only, they do not replace a detailed design calculation and compliance with all applicable Code requirements. CIS GmbH expressly disclaims liability for errors and omissions in the contents of this site.

ASME Section VIII Division 1
Imprint | Contact | phone +49 201 74 72 75-0 | service@cis-inspector.com ASME Facebook ASME Xing LinkedIn ASME

© CIS GmbH