Bolted Frame Corner


The SRE-1 program designs bolted connections of frames in steel structures and performs the necessary verifications of the structural safety and the welded connections.

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Different materials can be selected for the beam and the column. The following materials are available:

  • Structural steel: S235, S275, S355, S450
  • Annealed steel (S275N – S460N)
  • Thermo-steel (S275M – S460M)
  • Weathering steel (S235W – S355W)
  • High-temperature steel (S460Q – S460QL1)
  • Hollow section, hot-finished (S235H – S355H)
  • Hollow section, hot-finished, fine-grain (S275NH – S460NH)
  • User-defined steel
Structural system

Available systems:

  • Beam to continuous column (T-joint)
  • Beam to column ending at the corner (knee joint)
  • Column to beam ending above the column (K-joint)
  • Column to continuous beam (rotated T-joint)
  • T-joint with haunch on one or both sides and inclined beam
  • Knee joint with haunch on one side and inclined beam
  • Knee joint with additional tension plate in the bolted connection, optionally also bolted to a top plate
  • Arrangement of diagonal stiffeners or a web plate on one side in the shear panel area
  • Arrangement of web stiffeners in the load-transferring component is possible


  • I-sections as standard shapes
  • User-defined I-sections
  • Design internal forces from axial force, moment and shear force
  • Multiple combinations of design internal forces can be entered
  • Bolts (black bolts and fit bolts)
  • Sizes: M12, M16, M20, M22, M24, M27, M30, M36
  • Strength classes: 4.6; 5.6; 8.8; 10.9

The calculation of joints with two vertical bolt rows is based on the component method as per DIN EN 1993-1-8. For the verification of butt plate joints with four vertical bolt rows, the model described in the following publications is used:

  • Research Report 3/2009: Entwicklung eines Bemessungsmodells für geschraubte momententragfähige Kopfplattenverbindungen mit 4 Schrauben in einer Schraubenreihe auf der Grundlage der prEN 1993-1-1:2003; Deutscher Ausschuss für Stahlbau DASt, Düsseldorf
  • WAGENKNECHT: Stahlbau Praxis nach Eurocode 3, Band 3 Komponentenmethode, 2nd edition; Beuth Verlag GmbH, Berlin, Wien, Zürich 2017

Either the elastic or plastic cross-sectional resistance is verified. The verification of the weld seam limit stresses is performed using the simplified method.

Document file formats
  • PDF
  • Word
  • Printer
  • Brief
  • Standard
  • Detailed
  • User-defined output scope
Import options
Export options
  • Word
  • PDF
  • DXF-file
Steel construction
  • DIN EN 1993
  • ÖNORM EN 1993