3. Properties

This section defines the material properties, sections, rebars, and bolt properties used throughout the bridge model.

Define these properties before modeling structural components. Once imported, they appear in property selection dropdowns throughout the workflow.

Properties to Define

Property Type	Description
Materials	Steel and concrete material definitions (A709 Grade 50, f'c=4 ksi)
Rebars	Reinforcement bar definitions for deck and substructure
Sections	Cross-frame member sections and other structural shapes
Bolt Property	Bolt specifications for field splices and connections

Materials Used in This Example

• Structural Steel: AASHTO M270, Grade 50 (Fy=50 ksi, Fu=65 ksi)

• Concrete: f'c=4 ksi, unit weight=150 pcf

• Reinforcing Steel: AASHTO M31, Grade 60 (Fy=60 ksi)