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Nominal Weight of Structural Members

Nominal Weight of Structural Members

There's an inconsistency in all the BS4 Steel Members lookup tables - it could apply to other steel members too.

The Nominal Weight Parameter unit is given as "kgf/m" (which an unacceptable non-SI unit) but all the Nominal Weight figures in all the tables show the kg/m values.  It's a useless value making the calculation of member masses for tonnage calculations needlessly complicated.

Either:

  • Change the built in family to support a "Nominal Mass" or "Mass per metre" parameter with a kg/m unit replacing the "Nominal Weight" parameter.  The values in the lookup tables can then stay the same, just change the headings & units.
  • Change the "Nominal Weight" to the correct N/m or kN/m unit AND then change all the lookup tables to show the correct weight per metre values.
2 Comentarios
Karol_Piroska
Advisor

and it is not only that. There are massive differences between families of same category - naming, units, organisation etc etc. 

mark.jollyR7W78
Participant

Agree whole heartedly with you. 'kgf/m'  is a non-standard unit and is adopting the wrong unit for the value given. All steel tables relate to values in kg/m. Having to divide the result Revit gives you by the value of gravity is needless. 

Screenshot 2021-05-18 103710.png

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