Materials

This section defines material properties for structural steel, reinforcing steel, and concrete used in the Steel I Girder Bridge model.

Navigation: Properties > Materials

For detailed parameter explanations, see the Materials Reference.

Steps

Step 1: Navigate to Materials

Navigate to Properties > Materials in the tree view.

Step 2: Import Structural Steel Materials

Click the three-dots icon on the first cell under Name and select Import Material.

Import the following steel materials from the OpenBrIM Library:

Material Path	Material Name
OpenBrIM Bridge Objects > Steel Material Database (US) > Structural Steel	A709_50
OpenBrIM Bridge Objects > Steel Material Database (US) > Structural Steel	A709_50W
OpenBrIM Bridge Objects > Steel Material Database (US) > Reinforcement Steel	A615_60

Import Material

Material Selection

Step 3: Import Concrete Materials

Import the following concrete materials:

Material Path	Material Name
OpenBrIM Bridge Objects > Concrete Material Database (US) > US AASHTO	Fc_4ksi
OpenBrIM Bridge Objects > Concrete Material Database (US) > US AASHTO	Fc_4ksi (rename to Fc_4ksiforDeck)

Step 4: Assign Stress-Strain Models for Concrete

Click the three-dots icon on Fc_4ksi and select Edit.

Set Stress/Strain Model to Mander Concrete.

Edit Material

Mander Concrete

Repeat for Fc_4ksiforDeck.

Step 5: Assign Stress-Strain Model for Reinforcement

For A615_60, set Stress/Strain Model to Bilinear Steel.

Bilinear Steel

Step 6: Create Rigid Material

Add a new row and create RigidMaterial for rigid connections.

Set the unit weight of rigid materials to 0 to avoid adding artificial mass to the model.

Rigid Material

Step 7: Create FcCube_NoStiffness Material

Add another material named FcCube_NoStiffness for components where stiffness should be excluded.

FcCube NoStiffness

Quick Tip: Stress-Strain Curves

Each material includes a default stress-strain curve for section capacity calculations. To view or modify:

1. Click the three-dots icon on a material and select Edit

2. Select the Stress/Strain Model from the dropdown

3. The corresponding curve updates automatically

Verification

After completing these steps, the material definitions should match the view shown below.

Completed Materials

To view the entire procedure explained on this page, please watch the recorded video below.

Properties-Material SIGEX1