*HEADING
  BARREL VAULT (30 X 30 MESH) STRI65 
**PREPRINT,ECHO=YES,MODEL=NO,HISTORY=NO
*NODE ,  SYSTEM=C,NSET=CORNER
1 , 300.
61 , 300. ,,300.
 6001 , 300. , 40.
  6061 , 300. , 40. , 300.
*NGEN,LINE=C,NSET=WALL
1 , 6001 , 100
*NGEN,LINE=C, NSET=SYMM
61 , 6061 , 100  ,,,, 300.
*NFILL
WALL,SYMM,60,1
*NGEN,NSET=APEX
1, 61
*ELEMENT,TYPE=STRI65 ,ELSET=ROOF1
    1,     1,     3,   203,     2,   103,   102
50001,     1,   203,   201,   102,   202,   101
*ELGEN,ELSET=ROOF
    1,    30,     2,     1,    30,   200,   100
50001,    30,     2,     1,    30,   200,   100
*MATERIAL,NAME=STEEL
*ELASTIC
3.E6, 
*BOUNDARY
APEX,YSYMM
SYMM,ZSYMM
WALL,1,2
*SHELL SECTION,MATERIAL=STEEL,ELSET=ROOF
3.0, 3
*STEP
 SELF-WEIGHT
*STATIC
*DLOAD
ROOF, BX, -0.20833
*EL PRINT,FREQUENCY=0
*EL FILE,ELSET=ROOF1
S, 
E, 
*NODE FILE,NSET=CORNER
U, 
RF, 
*END STEP