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  1. popabf

    Shell

    I agree that are many different situation where the engineering call ca make you take the judgement to use constraints. But I don't think the floor of the balcony is a situation that require the use of them or that are not necessary to connect joint of the "floors" to beams/columns. It depends...
  2. popabf

    Different rebar properties

    I also made another simplification: I chose to define different materials (ex. BEAM) wtih "Design type=Concrete" and "Design property data: -bending reinf. yeld stress= 68 ksi (like D4 rebar) -shear reinf. stress= 56 ksi (like rebar type 11 ga.)" And now I can define new "BEAM" section with...
  3. popabf

    Different rebar properties

    Thanks. It has been helpfull.
  4. 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...
  5. popabf

    Shell

    I would dissagree with you on this one. there is no need to insert constraints in the analysis when we want the program to transfer the forces from the shells to the beams. For this is necessary to be carefull on the conetion fo the joints (every joint resulted from the meshing of the shell must...
  6. popabf

    Shell

    Of course the results depend on the type of meshing. All joints formed by meshing the shell elements must be in connection with the joints resulted from meshing the bar elements. If not, discontinuities appear.
  7. popabf

    why I need input Depth(t3) and Width(t2) when I define general section

    When using Import/Add GENERAL there are no Depth(t3), Width(t2) parameters to define. At least for version 9 or 10. what version of SAP are you using?
  8. popabf

    Assigning Loads To Frames

    There are 2 major possibilities to assign loads on bar elements (beams): according to the Local Coordinates of the element (1, 2 or 3) or accord. to the Global Coordinates (X, Y or Z). The help files contain all the informaions necessary.
  9. popabf

    please clarify to me

    I think of RATE OF FAILURE. Could be other parameters to determine. You should "register" the time of functioning versus the speed of functioning, if I may say so. This is one ideea. Than, calculate the failure probability using Gumbel or Weibull distribution models. The data should be processed...
  10. 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...
  11. 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...
  12. popabf

    Beam Difflections

    I didn't fin either the Deflection section in the Output. What you can do is to right-click on the deformed shape of the beam. In the window that will appear, you'll see at the bottom the panel Deflection. There you can see the values of the deflection for any given distance from node "i" to "j"...
  13. popabf

    Attic truss analysis

    You have to adjust the DOFs in the Analysis-Options according to the releases made to your joints.
  14. popabf

    portal frame approximation to pendulum

    I mean, is this correct??
  15. 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...
  16. popabf

    Frequency Analysis

    Can you give more details about "Extract the natural vibration modes"? Thanks.
  17. 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.
  18. 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)...
  19. popabf

    Negative Jacobian error message on Modal Analysis

    Well, tell the others what was the problem so they can learn from your mistakes. It would be a generous gesture.
  20. popabf

    optput for plastic hinges

    Maybe they are too small. Try to use some different(smaller) units of measure.

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