creaform wind 3dCreaform worked with Versilis to perform the structural integrity assessment of the SwiftGate road sign as per AASHTO – Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, Sixth Edition (LTS-6). The first step was to determine drag coefficients for different wind direction using CFD, which turned out to be greatly helpful because the generic coefficients pulled from the standards were much too conservative. The aerodynamic loading was then applied on the gate within a finite element model of the entire structure, including the anchoring system, the swivel gate welded support, shaft, bearings and polymer gate. The model enabled Versilis to confidently set the maximum wind velocities that the gate could withstand in both deployed and retracted configurations, in accordance with all the prescribed factors and norms stated by AASHTO LTS-6. Read More