IDEA StatiCa tutorial – General 3D joint (EN)

Welcome to IDEA StatiCa tutorial. This tutorial shows how to use software IDEA StatiCa to model, design and check a structural steel joint.


1 New project

Let’s launch IDEA StatiCa and select application Connection. We create a new project by selecting a starting template closest to the desired design, filling the name and choose design code and default material properties – S 275.


2 Geometry

Three beams were automatically added.


Member SL

We will create a general cross-section for the column member. To do that, we select Welded, Composed tab and click on General steel cross-section.


General cross-section editor is opened and we start composing the cross-section by selecting the I sections in the Cross-section Navigator.


Then we continue by clicking on the icon Add new entity and selecting the Sections T (I-cut). The Rolled T (I-cut) window is opened and we edit the shape.


Then we make a copy of this entity by clicking Copy icon in the upper ribbon.


Next we move and rotate the added T-shaped entities to design the whole cross-section by editing of values in the Cross-section components tab as in the figure below.


We have the final design of cross-section for member SL.


For further information see the FAQ section How to create and use custom cross-section in the IDEA StatiCa Resources website.


Member B1

Let’s start with Right-click on the beam B1 and set the cross-section to HEB280 from the library.

And we have to change the member B1 properties.


Member B2

We set the cross-section to HEA180 on beam B2.

We can go on and change the member B2 properties.


For further information about the property Forces in see the FAQ section How to define load position in the IDEA StatiCa Resources website.


Member M4

Click by the right mouse button at the Members row in the tree of entities in the 3D scene. We choose the New member command from context menu.


We continue and change the member M4 properties, follow the picture below.


Member M5

We add another member, set its cross-section to L100X8 and update properties.


Let’s check the final geometry of members.


3 Load effects

One load effect was automatically added. We input the values of internal forces into the chart. More load cases can be added.


4 Design

Let’s add a new one by the command new Operation at the top ribbon. First, we select the Cut of member operation to extend the column.


Now we change the properties of the operation CUT1. Follow the picture below.


We can go on and add next Manufacturing operation. Now, we select the End Plate and set desired bolts.


We can proceed and change the properties of the operation EP1. Follow the picture below.


Let’s copy operation EP1. With the right mouse button click at the EP1 and choose Copy.


Now we have to set the correct properties of EP2.


We continue and input a Fin plate.


And we change the properties of the operation FP1. Follow the picture below.


We finish the design by adding a Gusset plate operation.


And set the parameters for GUSS1.


Finally, we edit the gusset plate shape. With the right mouse button by clicking on plate GUSS1 in 3D scene and choose Editor.

We modify the gusset plate by input of a Bevel.


Let’s check the final design of the joint.


5 Check

We start the analysis based on CBFEM by clicking Calculate in the ribbon. Analysis model is automatically generated, calculation is performed and we can see the Overall check displayed together with basic values of check results.


We go to the display tab Check and there we activate Equivalent stress, Bolt forces, Mesh and Deformed from the ribbon to get a full picture of what is happening in the joint.


6 Report

At last we go to the tab Report. IDEA StatiCa offers fully customizable report to print out or save in editable format.

We have designed, optimized and code-checked a General 3D joint according to Eurocode.


connection, joint, Eurocode, bolt, end plate, fin plate, welds, gusset plate, code-check, stress, bolt forces, deformation, CBFEM


Related articles and tutorials:

How to model one bolt connection

How to create and use a custom cross-section

Why is 5% strain limit used in material diagram for EC?

Is IDEA Connection a FEM solution like Abaqus or ANSYS?