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WHAT WE DO
What we do
Simple end plate connections

Simple end plate connections

  • Partial depth end plates

  • Full depth end plates

Column splices

  • Cover plate splices

  • End plate splices

  • Bearing type splices

  • Non-bearing type splices

  • Welded splices

Column splices
Bracing connections

Bracing connections

  • Gusset plates

  • End plates

  • Angle cleats

Hollow section (truss) joints

Hollow section (truss) joints

  • Uniplanar joints: T, Y, X

  • Uniplanar joints: K, N, KT

  • Multiplanar joints: TT, XX, KK

Moment end plate connections

Moment end plate connections​

  • Haunched beams

  • Extended depth end plates

  • Full depth end plates

STEELCONN
DESIGN
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We assist structural steelwork companies and contractors with the design of a wide range of steel connections, from simple joints to complex moment connections.

Beam splices

Beam splices

  • End plate splices

  • Cover plate splices

  • Welded splices

  • Portal apex haunch

Angle cleat connections

Angle cleat connections

  • Single angle web cleats

  • Double angle web cleats

  • Double flange cleats

  • Clip and seating angles

Welded moment connections

Welded moment connections

  • Full strength connections,  butt welds / fillet welds

Column bases

Column bases

  • Nominally pinned bases

  • Moment-resisting bases

Fin plates

Fin plates

  • Single fin plates

  • Double fin plates

STEEL CONNECTION DESIGN CALCULATIONS
 
In our connection design process, we utilise two complementary analysis methods: the Finite Element Method (FEM), using specialised software, and the standard component method, using our internally developed advanced spreadsheets.Using both methods allows us to independently assess the capacity of the connection as a whole, as well as the critical components of the joint. This provides an additional level of verification, helping to ensure that the designs produced are robust, adequate, and safe.
Finite Element Method (FEM):
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Connected members and all components of the connection—including bolts, welds, and plates—are modelled using dedicated finite element analysis software.
We can analyse a wide range of connections, from simple standard joints to complex, bespoke, and non-standard connections, within a relatively short timeframe. This allows us to provide efficient and reliable solutions, even for challenging connection designs.
All design checks are carried out in accordance with the relevant Eurocodes, including:
  • BS EN 1993-1-1:2005 — General rules and rules for buildings
  • BS EN 1993-1-5:2006 — Plated structural elements
  • BS EN 1993-1-8:2005 — Design of joints
Finite Element Analysis
Finite Element Analysis
Finite Element Analysis
Component method with our in-house spreadsheets:
 
Connection design calculations are carried out in accordance with the latest applicable standards and technical publications, including SCI P358 and SCI P398.
For this method, we use internally developed advanced spreadsheets created through a thorough study of the design formulas and equations contained in a wide range of design standards, technical publications, and engineering literature, combined with our practical experience in connection design.
This approach enables us to carry out detailed and efficient assessments of individual connection components and verify their capacity in accordance with the applicable design requirements. The following documents and publications are used as references in our connection design process:
  • BS EN 1993-1-5:2006
  • BS EN 1090-1:2009+A1:2011 and BS EN 1090-2:2008+A1:2011
  • NA to: BS EN 1993-1-1:2005, BS EN 1993-1-5:2006, BS EN 1993-1-8:2005
  • BS EN ISO 19902:2007
  • The American Institute of Steel Construction - Design Examples V14.2
  • The British Constructional Steelwork Association, Publication No. 41/05, Steel Details
  • The British Constructional Steelwork Association, Publication No. 52/10, NSSS 5th Edition
  • Connections in Steel Structures IV, V, VI, VII: Behaviour, Strength and Design, International conferences
  • The Steel Construction Institute Publications: P060, P102, P143, P148,P207/95, P212, P375, P391, P403
  • The Steel Construction Institute Advisory Desk Notes
  • Access Steel NCCI Publications
  • Owens, G. W., Cheal, B. D., Structural Steelwork Connections
  • Wald, F., Design of Structural Connections to Eurocode 3, FAQ
  • Modern Steel Construction, Steel Interchange articles
  • CIDECT, General series of design guides: Construction with Hollow Steel Sections
 
      Please note this list is not exhaustive.
Steel calculations
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