IFC files takes numerical data also Like we can talk about XDim, YDim or Depth and many more also.
If we talk about Units they are well arranged in IFC , we get that is IFC that units are in mm or metre and then every values are according to it only .
Rest you have any other query in my problem then please ask i will be happy to answer it.
Thanks for your reply.
And if we talk about implementation of IFC i had tried maximum BIM software that are available in market , They all are useless in structure point of view, as too less structure engineers are working on IFC implementations that’s why IFC owners don’t know minor/major problems of reinforcement, and which structure engineers are facing all way.
NO authority is taking care of it .