W/WT/HSS/WWF/C/L shape having nominal weight parameter as kgf/m as built-in parameter, this parameter can't be able to use for Quantity take off for Steel material. Also unit is wrong and not able to into Revit as kg/m. If some how we have nominal weight as shared parameter instance that can be more useful with unit kg/m. Joist or Truss need to have Nominal Weight parameter to calculate tonnage. So user can type number for TRUSS / OWSJ Nominal weight in instance property.