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Found 6 results

  1. Assalam O Alykum 1 problem i have find out in one of our structural model. Etabs giving us the message as deleted. What can be the issue is? Can anybody help in this regard
  2. Hi. I am a student and recently I started my first project on Etabs to model a steel structure. I had faced some problems therefore I seek for your valuable advice. The problems are: 1) When I have done the analysis, there was a warning-“ Eigenvalue 3 was found out of sequence.” popped out. 2) Also when I started steel frame design, I found out that the axial force in the column is in negative value and some of them showing red colour. May I know what exactly the problem is and how to resolve it? The Etabs file is attached below. I hope that someone can help me to clear my doubt. Thank you. RUNNING ANALYSIS AS A SEPARATE PROCESS USING THE STANDARD SOLVER (PROVIDES COMPLETE INSTABILITY INFORMATION) NUMBER OF JOINTS = 1610 WITH RESTRAINTS = 225 WITH MASS = 1604 NUMBER OF FRAME/TENDON ELEMENTS = 1435 NUMBER OF SHELL ELEMENTS = 1132 NUMBER OF CONSTRAINTS/WELDS = 3 NUMBER OF LOAD PATTERNS = 7 NUMBER OF ACCELERATION LOADS = 9 NUMBER OF LOAD CASES = 8 NUMBER OF MASS SOURCES = 2 ADDRESSABLE PHYSICAL MEMORY (RAM) = 7.672 GB PARALLELIZATION OF ANALYSIS OPERATIONS: (Env. variable SAPFIRE_NUM_THREADS = 0) NUMBER OF THREADS: STATE (AUTOMATIC) = 2 NUMBER OF THREADS: STIFFNESS (AUTOMATIC) = 2 NUMBER OF THREADS: EVENT (AUTOMATIC) = 2 NUMBER OF THREADS: MOVE (AUTOMATIC) = 2 NUMBER OF THREADS: RESPONSE (AUTOMATIC) = 2 NUMBER OF THREADS: SOLVE (AUTOMATIC) = 2 NUMBER OF THREADS: FORM (AUTOMATIC) = 2 E L E M E N T F O R M A T I O N 12:32:51 NUMBER OF COUPLED CONSTRAINT EQUATIONS = 0 L I N E A R E Q U A T I O N S O L U T I O N 12:32:51 FORMING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS USING MASS SOURCE: MsSrc1 TOTAL NUMBER OF EQUILIBRIUM EQUATIONS = 8976 APPROXIMATE "EFFECTIVE" BAND WIDTH = 128 NUMBER OF EQUATION STORAGE BLOCKS = 1 MAXIMUM BLOCK SIZE (8-BYTE TERMS) = 1147837 SIZE OF STIFFNESS FILE(S) = 8.792 MB NUMBER OF EQUATIONS TO SOLVE = 8976 --------------------------------- BASIC STABILITY CHECK FOR LINEAR LOAD CASES: NUMBER OF NEGATIVE STIFFNESS EIGENVALUES SHOULD BE ZERO FOR STABILITY. (NOTE: FURTHER CHECKS SHOULD BE CONSIDERED AS DEEMED NECESSARY, SUCH AS REVIEWING EIGEN MODES FOR MECHANISMS AND RIGID-BODY MOTION) NUMBER OF NEGATIVE EIGENVALUES = 0, OK. --------------------------------- L I N E A R S T A T I C C A S E S 12:32:52 USING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS TOTAL NUMBER OF CASES TO SOLVE = 7 NUMBER OF CASES TO SOLVE PER BLOCK = 7 LINEAR STATIC CASES TO BE SOLVED: CASE: DEAD CASE: LIVE CASE: WINDX CASE: WINDY CASE: MANSORY CASE: FINISHES CASE: ~LLRF E I G E N M O D A L A N A L Y S I S 12:32:52 CASE: MODAL1 USING STIFFNESS AT ZERO (UNSTRESSED) INITIAL CONDITIONS USING MASS SOURCE: MsSrc1 NUMBER OF STIFFNESS DEGREES OF FREEDOM = 8976 NUMBER OF MASS DEGREES OF FREEDOM = 2782 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 = 24 RELATIVE CONVERGENCE TOLERANCE = 1.00E-09 FREQUENCY SHIFT (CENTER) (CYC/TIME) = .000000 FREQUENCY CUTOFF (RADIUS) (CYC/TIME) = -INFINITY- ALLOW AUTOMATIC FREQUENCY SHIFTING = YES Original stiffness at shift : EV= 0.0000000E+00, f= .000000, T= -INFINITY- Number of eigenvalues below shift = 0 Forming stiffness, new shift: EV= 1.0000000E-03, f= 0.005033, T= 198.691765 Number of eigenvalues below shift = 251 Forming stiffness, new shift: EV= 5.0000000E-04, f= 0.003559, T= 280.992589 Number of eigenvalues below shift = 146 Forming stiffness, new shift: EV= 2.5000000E-04, f= 0.002516, T= 397.383531 Number of eigenvalues below shift = 83 Forming stiffness, new shift: EV= 1.2500000E-04, f= 0.001779, T= 561.985178 Number of eigenvalues below shift = 47 Found mode 1 of 12: EV= 1.2519803E-04, f= 0.001781, T= 561.540539 Found mode 2 of 12: EV= 1.2519803E-04, f= 0.001781, T= 561.540539 Forming stiffness, new shift: EV= 6.2500000E-05, f= 0.001258, T= 794.767061 Number of eigenvalues below shift = 27 Forming stiffness, new shift: EV= 3.1250000E-05, f= 0.000890, T= 1123.970 Number of eigenvalues below shift = 14 Forming stiffness, new shift: EV= 1.5625000E-05, f= 0.000629, T= 1589.534 Number of eigenvalues below shift = 2 Forming stiffness, new shift: EV= 7.8125000E-06, f= 0.000445, T= 2247.941 Number of eigenvalues below shift = 0 Found mode 3 of 12: EV= 1.2916113E-05, f= 0.000572, T= 1748.292 * * * W A R N I N G * * * EIGENVALUE 3 WAS FOUND OUT OF SEQUENCE Found mode 4 of 12: EV= 1.2916113E-05, f= 0.000572, T= 1748.292 Found mode 5 of 12: EV= 2.3206534E-05, f= 0.000767, T= 1304.292 Found mode 6 of 12: EV= 2.3206534E-05, f= 0.000767, T= 1304.292 Found mode 7 of 12: EV= 2.3217637E-05, f= 0.000767, T= 1303.980 Found mode 8 of 12: EV= 2.3217637E-05, f= 0.000767, T= 1303.980 Found mode 9 of 12: EV= 2.3992956E-05, f= 0.000780, T= 1282.738 Found mode 10 of 12: EV= 2.3992956E-05, f= 0.000780, T= 1282.738 Found mode 11 of 12: EV= 2.9689614E-05, f= 0.000867, T= 1153.128 Found mode 12 of 12: EV= 2.9689614E-05, f= 0.000867, T= 1153.128 NUMBER OF EIGEN MODES FOUND = 12 NUMBER OF ITERATIONS PERFORMED = 48 NUMBER OF STIFFNESS SHIFTS = 8 Etabs problem file.EDB Column report.pdf
  3. Hello, Does anyone know the origine of and how to solve the following error message in ETABS: " Error in recovering group results: CSI.SAPmodel.cReadSAPBase.GetReponseGroup: CsiGo error Details: kFatal=22 " Many thanks
  4. Hi, I am using auto select list to pick a section for shear wall design. when i run analysis for second time, to revise auto selection i got this error " NO Load Cases to run". Also when i unlock the Model i got another warning. i am unable to comprehend this behavior please help.
  5. Hello dear Seniors, i am new to etabs i was designing a multistory plaza and when i ran the analysis following error occurred Warning: Area load transfer, Check StoryX, F659. Total loss = ....... i have tried to re mesh my model using default meshing but it does not help can any one tell me whats wrong with my model. Please see the below picture for more info on the same issue Note: if i design the model while these error are present majority of my beams and columns fail, if i try to increase their sections to the max even then they dont satisfy......
  6. Hi Everyone: My Etabs model of v 9.2 is showing this error (Warning: Check meshing, AtGROUND area F48 ( 99.95% Increment)) when i am checking model please anyone suggest solution.
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