Completing Seismic Analysis
Hi,I am trying to complete the combined seismic and static analysis and wondering if someone could clarify the confusions I am facing!!I have attached the model which runs fine for the static cases....
View ArticleRE: ***WARNING - Instability at Joint 253 Direction=My
I am also getting same warnings for a tower. I tried modelling the complete tower and sending only a portion of it. I could not figure how i can omit the error. When i remove the truss command to space...
View ArticleRE: INSTABILITY ERROR ****WARNING INSTABILITY AT JOINT XYZ DIRECTION = FY/FZ
Please find the text file as follows:STAAD TRUSSSTART JOB INFORMATIONENGINEER DATE 15-Jan-14END JOB INFORMATIONINPUT WIDTH 79UNIT METER KNJOINT COORDINATES1 0 0 0; 2 28 0 0; 17 3.41667 13.3333...
View ArticleRE: ***WARNING - Instability at Joint 253 Direction=My
Hi,You have specified all members in your model as truss member using the command STAAD TRUSS. When you declare all members connecting at specific nodes to be truss members, the alignment of the...
View Article***WARNING - Instability at Joint 253 Direction=My
I could not figure out why STAAD gives ***WARNING - Instability at Joint 253 Direction=My Thank you very much, IV STAAD SPACE START JOB INFORMATION END JOB INFORMATION INPUT WIDTH 79 SET NL 90 UNIT...
View ArticleRE: INSTABILITY ERROR ****WARNING INSTABILITY AT JOINT XYZ DIRECTION = FY/FZ
Hi,You have specified all members in your model as truss member using the command STAAD TRUSS. When you declare all members connecting at specific nodes to be truss members, the alignment of the...
View ArticleForum Feature Requests
I would like to request 2 items in the forum:- Either separate STAAD and RAM forums, or the ability to filter out keywords. I use the RAM suite and not STAAD, so If I don't come here frequently it is...
View ArticleRE: INSTABILITY ERROR ****WARNING INSTABILITY AT JOINT XYZ DIRECTION = FY/FZ
You can get general information on Instability and Zero stiffness in the FAQ section:...
View ArticleINSTABILITY ERROR ****WARNING INSTABILITY AT JOINT XYZ DIRECTION = FY/FZ
I dont understand why i am getting this error. I am attaching a file for small portion of a 170 m tower. I could not figure how i can omit the error. When i remove the truss command to space command, i...
View ArticleRE: Ram Connection - Solution only when Compatibility is Checked
Also - how can I "check" the design as oppose to "optimize" the design?
View ArticleRE: RAM Concept Integration into RAM SS
That is correct, slab or beam geometry altered in RAM Concept is not transfered back to the RAM Structural System, however, the revised loading due to these changes will be transfered back to allow any...
View ArticleRAM Concept Integration into RAM SS
It appears that when you update beam sizes in RAM Concept, they will not transfer back into RAM Structural System. So the only reason for the integrated link in RAM SS for RAM Concept is to import...
View ArticleDisplacement results using FEM in Staad
Hi, I just want to know that as per Finite element the forces are calculated at nodes whereas in staad the forces in output can be seen at different points along the beam between start and end node....
View ArticleRE: Ram Connection - Solution only when Compatibility is Checked
Technical information on the strain compatibility option can be found in the article on the following web...
View ArticleRam Connection - Solution only when Compatibility is Checked
Why might I only find a solution when "consider strain compatibility" is checked?In this case I have a large (24" diameter) custom HSS shape. The program only "finds" a solution when "consider strain...
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STAAD Foundation Analysis Problems
I am trying to run a Mat foundation design in STAAD Foundation Advance and after running the analysis, I am getting extreme deflection/stress/moment results for 2 of 8 load cases. After I got my Pro...
View ArticleRE: fundamentals period T
First STAAD calculates the T using Rayleigh method and for the X direction for your structure it is computed as 4.583 s. Now as per the section 12.8.2.1 of ASCE 7, the approximate fundamental period Ta...
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T Beam in STAAD PRO
IS IT POSSIBLE TO DESIGN T-BEAM IN STAAD PRO ( I MEAN T BEAM WITH SLAB ) AS SHOWN IN THE ATTACHED FILE ?REGARDS
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