** SUBSTRUCTURE GENERATION FILE FOR substrframe_2level.inp
**substrframe_2level_gen2.inp SHOULD BE RUN FIRST
** Create substructure for the beam by combining two of the half-beam
** substructures
*ELEMENT,TYPE=Z92,ELSET=ZUPER2,FILE=substrframe_2level_gen2 
1,1,6
2,6,11
*SUBSTRUCTURE PROPERTY,ELSET=ZUPER2
**
**
*STEP
*SUBSTRUCTURE GENERATE,TYPE=Z201,MASS MATRIX=YES,OVERWRITE
*RETAINED NODAL DOFS
1 ,
11,
*SUBSTRUCTURE LOAD CASE, NAME=SNOW
*SLOAD
1,PSNOW,1.
2,PSNOW,1.
*END STEP