EN1380-3 2017 upcoming addenda

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rickand
Beiträge: 13
Registriert: Mi 14. Sep 2011, 09:49

EN1380-3 2017 upcoming addenda

Beitrag von rickand »

Hi

The Technical Committee TC267 had it's annual meeting 22th of November and as usual the Working Group 3 for "Design" also met on the days before. The current consolidated version of EN13480 is from 2017 and the following Addenda are under preparation for the part "Design and Calculation":

A1: This addenda is basically a correction addenda for all the minor issues detected since the publishing of the consolidated version 2017. The corrections are coming either from the MHD Help-Desk questions (See http://www.unm.fr/main/core.php?pag_id=121 ) or from the national mirror groups.

A2: This is the mainly the modification of chapter 12 and annex H with:
  • explicitly write the alternative stress equations for ii and io and including torsion
  • including axial force in stress calculation
  • specify how to deal with corrosion allowances
  • correct problems with the sectional modulus at tees
  • update annex H tables with the correct sectional modulus, shape conditions and correct some graphics
A3: Revision of Annex A for dynamic analysis and Annex G for material data
Annex A:
  • new "best practice" rules for design that minimized vibration problems
  • explanations of superpositions for modal response earthquake calculations including residual-mode
  • introduction of a new criteria "dynamic susceptibility" to estimate risk of vibration problems before excitation is known.
Annex G:
  • allowable stresses for structural steel used for support design acc. to chapter 13.
These 3 addenda have been finalized for circulation in the member states and formal vote.
In addition there are 3 preliminary work-item which are under discussion:

prA4 - Clarification of support design in chapter 13 especially with the use of Eurocode 3 rules.

prA5 - rewriting of chapter 9 - "External Pressure" to take into account piping "out of roundness" bigger than 1%

prA6 - Chapter 10 - Design against cyclic failure

Best regards
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rickand
Beiträge: 13
Registriert: Mi 14. Sep 2011, 09:49

Re: EN1380-3 2017 upcoming addenda

Beitrag von rickand »

Hi

Just some updates ont the normative work on EN13480-3.

The Technical Committee TC267 had it's annual meeting 28th of November and as usual the Working Group 3 for "Design" also met on the days before. The current consolidated version of EN13480 is from 2017 and the Addenda listed in my previous are under preparation for the part "Design and Calculation".

The addenda 1 to 3 are now finalized and are submitted for formal vote, so I guess they will be published mid 2020.

The prA4, which clarifies how to use EC3 when designing pipe supports has also been prepared. It is supposed to go to CEN Inquiery beginning 2020.

The prA5 will include :
  • rewriting of chapter 9 - "External Pressure" to take into account piping "out of roundness" bigger than 1%
  • Threaded connections (for supports)
  • Welded connections (for supports)
  • adaptation of chapter 11 "integral attachments" go get in line with the modified chapter 12
The prA6 is to make the fatigue analysis (chapter 10 and 12) more consistent.

Best regards
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