Metals USA C-Beam™ are specified by their sizes in RAM Steel but are exported to FloorVibe as User-Defined shapes.

For Castellated beams the section properties passed from RAM Steel to FloorVibe are based on the design dt value. If in the Define Idealized Framing dialog box the user selects a different Castellated beam size, the value of dt defaults to the value of dtstandard given in the Castellated beam design tables, but the user can modify that value.

For Cellular beams the section properties passed from RAM Steel to FloorVibe are based on the design Do and S values (Smax for optimized sizes and Sactual for user-specified sizes). If in the Define Idealized Framing dialog box the user selects a different Cellular beam size, the value of Do defaults to the value of Dostandard given in the Cellular beam design tables and the corresponding Smax, but the user can modify that value.