gevolgklasse – BuildSoft Support https://support.buildsoft.eu BuildSoft Support Tue, 11 Aug 2026 07:16:26 +0000 en-US hourly 1 https://wordpress.org/?v=6.2.11 About the consequence class https://support.buildsoft.eu/knowledge-base/about-the-consequence-class/ Wed, 21 Apr 2021 08:29:51 +0000 https://buildsoftsupport.com/?post_type=ht_kb&p=6487 It is practically impossible to determine what the desired structural reliability for each different structure should be. Therefore EN 1990 Annex B divides structures into three consequence classes (CC for short):

Consequence Class Consequences Examples
CC3 Chance of losing lives: high
Economic/social impact: large		 Grandstands, public buildings, concert hall
CC2 Chance of losing lives: average
Economic/social impact: considerable		 Residential and office buildings
CC1 Chance of losing lives: low
Economic/social impact: small or negligible		 Agricultural buildings where people do not normally enter: storage buildings, greenhouses

The consequence class determines which partial safety coefficients for ULS-combinations should be used:

CC1 = CC2 x 0.9 CC2 CC3 = CC2 x 1.1
Fixed loads

  • Unfavourable
  • Favourable
 1.22
0,9		 1.35
1		 1.5
1
Variable loads

  • Unfavourable
  • Favourable
 1.35
0		 1.5
0		 1.65
0

Notes:

  • The National Annex may provide more detailed tables (which slightly different values) than the ones listed in this article.
  • In general, structures in reliability class RCi are associated with a consequence class CCi, with a design and calculation supervision DSLi and with an inspection level ILi.
    But the Belgian annex NBN EN 1990 ANB:2021 Annex B makes an exception for CC3:
    “Exceptionally, for a construction in RC3, the levels DSL 3 and IL3 may be omitted, provided that a KFI-factor of 1.1 is not taken, but a KFI-factor of 1.2 for the variable loads and a KFI-factor 1.1 for permanent loads. Even this last method is not the most preferable method.”
    This exception rule is implemented since Diamonds 2023r01 under CC3*.
  • The consequence class can be entered in the Load Group dialog . Diamonds will automatically adjust the partial safety coefficients.
]]>