Steel connection design – reinvented

Design and check all your steel connections according to the code, in minutes.

IDEA StatiCa Steel

2D frames & trusses

Footings, anchoring

3D frames & trusses


Application IDEA StatiCa Connection can design all types of welded or bolted connections, base plates, footing and anchoring. It provides precise checks, results of strength, stiffness and buckling analysis of a steel joint. Bolts, welds and concrete blocks are checked according to EN/AISC/CISC/AU/SP 16. Templates for most-used connections are available as well as wide range of predefined hot rolled and sheet welded members.

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No limits in how many connections there are in the joint and how they are put together. Shape is defined by project requirements, not by software capabilities.



All forces are analyzed. The overall check of the joint takes into account interactions between all the beams and connections. Engineers stay on the safe side all the time.



The whole design and check process is kept short enough to be a part of everyday work of structural engineers and fabricators all around the world.

IDEA StatiCa Connection provides

Overall check

According to various national design

Overall check - steel joint with bolts and stub
Stress/strain analysis

FE model of steel joint is composed

Stress/ strain analysis - anchorage of a column with a bolted diagonal
Stiffness analysis

Rotational or transversal stiffness of any

Stifness analysis - Bolted steel joint with dog bones on flanges for seismic areas
Member capacity design

Seismic check of non-dissipative

Member Capacity Design - splices and inclined stiffeners
Buckling analysis

Local buckling effects and critical load

Buckling analysis - Local buckling of a steel plate at column anchoring with stiffeners, ribs and a hole in the web
Design joint resistance

Maximal possible loads, reserve in joint

Design Joint Resistance - general 3D joint with hollow cross-sections and stub

Any topology – manufacturing operations

Circular end plate, stiffeners
Irregular bolt group, flange notches
Double haunches

Any loading – all internal forces from 3D global analysis

Base plate – N, My, Mz

Base plate – N, My, Mz

Generally loaded node - Combination of internal forces

3D loaded joint

End plate - My, Mz, Vy, Vz

End plate – My, Mz, Vy, Vz

3D simulation of a steel joint

Steel joint is composed of plates, welds, bolts, contacts and can be anchored into concrete blocks.
FEA model is generated automatically.


Model is composed of steel plates – both parts of steel members and stiffening plates. Real shape of plates is kept.
Each plate is meshed independently. Equivalent strain is checked.

Plates - meshed independently



Contacts appear in places where two plates are in touch. They take 100% of the pressure but do not act in tension at all.

Contact - 100% of the pressure 0 % of the tension


Concrete block

Steel structure can be anchored into concrete block. Base plate is in contact with concrete. Tension is taken by anchors, shear by bolts, friction or shear iron.

Concrete block - Shear taken by bolts, friction or shear iron


Welds are modeled as constrains between plates. Forces in each weld are evaluated. Stress in weld is checked according to all supported codes.

Welds - constrains between plates



Bolts are nonlinear springs taking tension and shear.

Bolts - Nonlinear springs


Designed by IDEA StatiCa Connection

Roof of the stadium - 3D joint of a truss costruction with hollow cross-sections
Department store - column anchoring using anchors with washers and a shear iron
Pedestrian footbridge - The lower belt of the bridge truss structure with a gusset plate