K-series joists are specified by their size label given in the SJI manual. KCS-series joists are not recognized by FloorVibe, so an equivalent member size must be specified in RAM Steel before the information is exported to FloorVibe. LH- and DLH-series joists are specified by their size label in RAM Steel but are passed to FloorVibe by their depth and uniform total and live load capacities (e.g., 24LH420/260). Joist Girders are specified by depth, panels and concentrated total and live loads (e.g., 24G6N8.1/5.3K). These sizes and the related information are all automatically exported to FloorVibe.

When a joist or joist girder is a special joist as indicated by a size of "xxGSP" or "xxSJxx", the user must specify an equivalent joist or girder before FloorVibe can be launched. Joist Girder depths must also be established.