IDEA StatiCa Tutorial - Tubular 3D frame (AISC)

Welcome to IDEA StatiCa tutorial. We will show how to use IDEA StatiCa Connection to design and code-check a structural steel joint, an example is the connection of a tubular 3D frame.


1. New project

Let’s launch the IDEA StatiCa Connection.

We create a new project by selecting template closest to the required design, let’s fill the name and the description of the project. After choosing the required properties lets confirm by Create project.


2. Geometry

We start with a modification of the joint geometry. Right-click on the continuous beam opens the context menu with all available actions for the beams. We use Plus button to add a new cross section.


We choose the Circular hollow section profile, PIPE(Imp) category and PIPE(Imp)12XS cross-section.


We have to change the member CH properties, follow the picture below.


We are going to take advantage of the prepared member to copy its properties, use the right mouse button click at the CH row in the tree of the entities. Select Copy command.


Let’s proceed with the renaming the new member, again we use right mouse button click at the M4 row and choose from the context menu Rename. Let’s change the name at CH–2.


We change the properties of member CH-2 following the picture below.


Proceed with the change of cross-section on the diagonal member. Again, we use the right mouse button click at the member and choose Plus to add a new cross-section. Let’s select the PIPE(Imp) 6STD cross-section.


Properties of this member will be like at picture below.


We proceed to the second diagonal member D2, let’s change the properties following the picture below.


Now we have to add another member, we can do it by command new Member at the top ribbon. Now let’s change the properties for the new member.


3. Load effects

Let’s continue with the Load effects. One load effect was automatically added by the wizard. We will input all internal forces into the table. We should not forget to turn on the Loads in equilibrium command in the top ribbon.


4. Design

We have to define the right manufacturing operation. Let’s start with the right mouse button click at the member CH-2 in the 3D scene. We will choose the Connect to command from context menu.


Now we have to choose a member to connect, let’s click on the member CH.


Now the possible one-member templates are provided, we choose the first one.


Let’s define all necessary properties for manufacturing operation PP1. Follow the picture below.


We will connect the other members by Cut manufacturing operation. Let’s add a new one by the command new Operation at the top ribbon. We change the properties of the operation CUT1. Follow the picture below.


Now we can take advantage of already defined operation, we will create the copy by right mouse button click and from the context menu, we will choose the Copy command.


We change the properties of CUT2 operation following the picture below.


Let’s copy the CUT2 manufacturing operation and change the properties of CUT3 manufacturing operation following the picture below.


The last step in the design of the joint is the last copy of the CUT3. Change the properties of the CUT4 following the picture below.


5. Calculation and Check

We can calculate the analysis right in the Design tab by the Calculate command.


After a while, the results summary will appear at the left top corner of the 3D scene and the Overall check model view is set. We can quickly fine-tune the model in case we are not satisfied.


We will choose the Check tab and turn on the Equivalent stress, Mesh and Deformed model view. We can explore the detailed results for the Bolts also, let’s expand the results for the bolt B7.


6. Report

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


Related articles and tutorials:

IDEA StatiCa FAQ – Equilibrium and supporting member

Theoretical Background – check of components according to AISC

Verification examples AISC



connection, joint, AISC, bolt, plate to plate, code-check, pipes, truss, template