

 SAP2000 v14.2.0 Advanced (Analysis Build 8845/32)
 File: C:\Users\DANILO\Desktop...oni\Esercitazione_00\parcheggio sotterraneo.LOG




 B E G I N   A N A L Y S I S                                2011/12/02  10:04:32


 RUNNING ANALYSIS WITHIN THE GUI PROCESS
 USING THE ADVANCED SOLVER (PROVIDES LIMITED INSTABILITY INFORMATION)


 E L E M E N T   F O R M A T I O N                                      10:04:32



 L I N E A R   E Q U A T I O N   S O L U T I O N                        10:04:32

 FORMING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS

 TOTAL NUMBER OF EQUILIBRIUM EQUATIONS     =          15
 NUMBER OF NON-ZERO STIFFNESS TERMS        =          66

 NUMBER OF EIGENVALUES BELOW SHIFT         =           0


 L I N E A R   S T A T I C   C A S E S                                  10:04:32

 USING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS

 TOTAL NUMBER OF CASES TO SOLVE            =           1
 NUMBER OF CASES TO SOLVE PER BLOCK        =           1

 LINEAR STATIC CASES TO BE SOLVED:

 CASE: DEAD


 E I G E N   M O D A L   A N A L Y S I S                                10:04:32

 CASE: MODAL

 USING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS

 NUMBER OF STIFFNESS DEGREES OF FREEDOM    =          15
 NUMBER OF MASS DEGREES OF FREEDOM         =           0
 MAXIMUM NUMBER OF EIGEN MODES SOUGHT      =          12
 MINIMUM NUMBER OF EIGEN MODES SOUGHT      =           1
 NUMBER OF RESIDUAL-MASS MODES SOUGHT      =           0
 NUMBER OF SUBSPACE VECTORS USED           =     1118229
 RELATIVE CONVERGENCE TOLERANCE            =    1.00E-09

 FREQUENCY SHIFT  (CENTER) (CYC/TIME)      =     .000000
 FREQUENCY CUTOFF (RADIUS) (CYC/TIME)      =  -INFINITY-
 ALLOW AUTOMATIC FREQUENCY SHIFTING        =         YES

 * * * W A R N I N G * * *
 THE STRUCTURE HAS NO (UNRESTRAINED) MASS; NO EIGEN MODES CAN BE FOUND


 * * * W A R N I N G * * *
 NO EIGEN MODES WERE FOUND



 A N A L Y S I S   C O M P L E T E                          2011/12/02  10:04:32
