The variation in joist and joist girder designations on plans can be different from office to office. RAM also has some default design results labels that can make things compilcated. The obvious standard design is something like 24K5. However, when a design does not 'fit' the traditional loading RAM will label those joists as 'XXGSP' or 'XXJST###/###' - all of which can be edited by the engineer.

On the other hand, Revit only has a set group of shapes in the joist families: 8-30K, 18-48LH, 52-72DLH and 16-120G

The following ground rules describe how Voxel Link deals with the incoming member names from RAM (standard or user defined). The same rules apply to all joist and joist girder types (K, LH, DLH and G). All new members are duplicates of the equivalent depth standard joist where possible. The examples show specific callouts for clarity but all depths and joist series are accepted and added as indicated:

  • XXGSP - these all become G16 joists/girders labeled XXGSP
  • 24K4 - this is a standard Revit accepted designation and is added as such
  • 24KSP1, 24KCS4 - these will be duplicates of the smallest 24" deep joist with the given name
  • KSP1 - no depth specified. the smallest K series joist (8K1) is duplicated with the given name
  • XXKSP1 - no depth specified. the smallest K series joist (8K1) is duplicated with the given name
  • 24JST250/125 - the smallest 24" K joist is duplicated with the given name.
  • XXJST250/125 - no depth specifed. the smallest K series joist (8K1) is duplicated with the given name
  • 21K4 - nonstandard depth. reassigned XXGSP label with no new joist family created.

Regardless of the families assigned at import, the location and slope of the incoming shapes match what is in RAM.