self weight

[kadirtopcu]

how can I include self weight of elements in an analysis in opensees? especially truss element and displacement beam column element. do I need to use element uniform load seperately or does the element include self weight on it automatically?

[xiell]

In OpenSees, you should define the mass and gravity respectively, you should use uniform load or node load to define the gravity

[fmk]

for line elements you must provide the selfweight either as nodal or as elemental loads (if using 3d transformation for the element, they must be applied as nodal loads)