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  1. popabf

    Different rebar properties

    Hi! I have different rebars types: also different geometric caracteristics and different material caracteristics. How do I model them in SAP2000 and how do I use them as reinforcing in structural members? Ex.: 2 deformed rebars: D4 and D5. D4->diameter=0.225 in and D5->diameter=0.252 in. This...
  2. popabf

    Seismic reccurency parameters

    I have to find the recurrency parameters used in the Gumbel type III (maximum likelihood-Weibull) methodology for a catalog of earthquakes (needed for a seismic hazard analysis). Now, from what I understand the parameters are: w,m,u and LAMBDA. And I have to find...
  3. popabf

    Seismic recurrency parameters

    I have to find the recurrency parameters used in the Gumbel type III (maximum likelihood-Weibull) methodology for a catalog of earthquakes (needed for a seismic hazard analysis). Now, from what I understand the parameters are: w,m,u and LAMBDA. And I have to find...
  4. popabf

    portal frame approximation to pendulum

    How do I approximate a portal frame to a pendulum? EI Lumped mass !--------!( o -> ) ! ! ! ! !EI !EI !2EI ! ! ! - - - Specific beam, column sections with mass and weight. So, here are my concerns for some...
  5. popabf

    Implement a design code in SAP2000?

    Is it possible to implement a certain design code in SAP2000? i need to implement data from some Romanian design codes. Also material data bases. Thanks.
  6. popabf

    results for meshed or not meshed plate

    Hi. I have o problem with an uniformly distributed force over the surface of a plate restrained only at the corner nodes. The plate is a quadratic 1mx1m and the force is 2KN/m2. -------- ! ! Sorry about the drawing. !--------! I made 3 examples of this plate: a)...
  7. popabf

    Analysis using door opening in shell elements ?!?

    Hi to everyone! I tried to analyse (static and dynamic/modal) a 3D reinforced concrete frame structure having also walls and floors. The problems ("analysis incomplete" or "zero stiffness for joint..in direction ...") appeared when I meshed the walls. After meshing, I deleted some of the small...
  8. popabf

    import .sdb files??

    How can I import .sdb files from SAP2000 v.8.27 to SAP2000 v.8.12?
  9. popabf

    Stiffness modification

    Hi! I have a simple supported beam made of concrete, with a rectangular cross-section.And I loaded it with, let's say, 100KN. I obtain some results..everything is fine. Now I want to make the same static analysis, only that my beam is now damaged(certain percent). 1)So, the damage of the beam...
  10. popabf

    Analysis case?

    I have 4 analysis cases defined: Dead load, live load, modal and time history(TH- using 3 accelerograms or ground motion time histories). In the window where I show/modify the TH analysis case appears a column where I shoul define the scale factor. And it has a great importance. If I use 1 it...
  11. popabf

    jOINT DISPLACEMETS TOO BIG..

    Hi! I use SAP 2000 Educational v.8.27. After I make the analysis of a 3 levels reinforced concrete frame structure, I obtain maximum joint displacements about 1.2m..?!?!?!? How can it be possible? I mention that these maximum displacements apear only in the case COMBO. COMBO is defined...
  12. popabf

    Formulae neded..

    Hi! I have the FEMA 273 code but it's lacking the formulae. So, in chapter 2.6.1.3, for example I don't know which is the formulae for the mean return period Pr, formulae noted with (2-2). And so on, for the whole chapter. Also for chapters 5,6,7,8,9,10,11. It would be usefull a link where can I...
  13. popabf

    SAP90...distributed load

    Hi, my question is how can I model an uniformly distributed load using SAP90, on a frame structure? I understood that block POTENTIAL is not recomended for frame structures? Where can I get a manual of SAP 90 in order to enlight myself concerning this problem?
  14. popabf

    Time History Function???

    I have SAP2000 v.7.12 and I want to make a time history analysis. So, I have to introduce in SAP2000 a time history function. I chose to import from a text file. But, when I make the analysis I get a message like: Error...file not found. Anyone had this problem?
  15. popabf

    Seismic performance

    Hi, My question is "How can I make a seismic performance analysis for a building(simple one)?" Until now I modeled the building, loads, 3 time history functions(longitudinal, transversal and vertical series for the same earthquake)and in the end I made a modal analysis. What should I...

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