: For existing buildings, STA4CAD is used to model performance levels. Cracks observed in the field can be factored into "performance analysis" to determine if a building requires retrofitting or if its current state meets safety requirements. Shear & Torsion Checks
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: You can find legitimate training and tutorials on their YouTube channel to learn the software's features before purchasing. STA4-CAD V13.0 Installation Guide | PDF - Scribd : For existing buildings, STA4CAD is used to