*HEADING
ECA3SFD4: FOUNDATION TYPE F3  [CAX3]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE,NSET=ALL
 1, 1.,0.
 3, 4.,0.
 7, 1.,3.
 9, 4.,3.
*ELEMENT,TYPE=CAX3, ELSET=EALL
 1,1,3,9
 2,1,9,7
*FOUNDATION
 2,F3,700.
*SOLID SECTION,MATERIAL=A1, ELSET=EALL
*MATERIAL,NAME=A1
*ELASTIC,TYPE=ISOTROPIC
 1.E-6, 
*STEP,PERTURBATION
*STATIC
*OUTPUT,HISTORY,FREQUENCY=1
*ENERGY OUTPUT
*OUTPUT,FIELD
*NODE OUTPUT
 RF, 
*BOUNDARY
 1,1,,0.001
 7,1,,0.001
 3,1,2
 9,1
*EL PRINT,FREQ=0
*NODE PRINT
 RF, 
*END STEP