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ASME Code - Toelaatbare Spanningen
  • Section II, Table 1A - Toel. spanningen
  • Section II, Table 1B - Toel. spanningen
  • Section II, Table 3 - Toel. spanningen
  • Toelaatbare spanningen koolstofstaal
  • Toelaatbare spanningen hooggelegeerd staal
Mantels en Bodems
  • Mantel onder inwendige druk
  • Elliptische bodem onder inwendige druk
  • Torisferische bodem onder inwendige druk
  • Klopperbodem (DIN28011) onder inwendige druk
  • Korfboogbodem (DIN28013) onder inwendige druk
  • Hemisferische bodem onder inwendige druk
  • Vlakke (cilindrische) bodem onder inwendige druk
  • Vlakke (niet-cilindrische) bodem onder inwendige druk
  • Equivalente flens druk bij externe belasting
  • Losse flens onder inwendige druk
  • ASME B16.5 flenzen
Bepalen van Vormspanningen
  • Vormingsspanning van een mantel
  • Vormingsspanning van een bodem
  • Vormingsspanning van buis of gebogen pijp

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Berekeningen van torisferische bodems - ASME Code Sectie VIII,
Divisie 1


inwendige druk P:

bar CIS ASME TÜV Thüringen Group

minimale wanddikte tmin:


toelaatbare spanning S:


Lasfactor E:


Kleine straal r:




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

nodige wanddikte treq:


ontwerp marge:




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

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ASME Section VIII Division 1
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