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Structure Wizard in Connect Edition Not Working

February 5, 2018, 8:39 am
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I am trying to import another STAAD.Pro model into a current model.  I am trying to use Structure Wizard in STAAD.Pro Connect Edition.  When Structure Wizard launches I went to Model Type Import CAD Models and then selected STAAD model.  I selected the STAAD file, but then nothing happens after that.  Nothing shows up in the Structure Wizard.  I selected File, Merge Model with STAAD.Pro model and then tried to select File, Exit.  At this point Structure Wizard will not close and it has not imported/merged with the current model.  Using File/Exit or using the "X" at the top right of the window.  The only way to close Structure Wizard is to use Ctrl, Alt, Delete.  See the attached pictures for the errors.  Does Structure Wizard work with STAAD.Pro Connect Edition?  This wasn't in the known issues on the Wiki, but are others having this problem?  I tried a simple file with just some nodes and beam elements and that did not work either.  Any help would be appreciated.  Thanks.

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Unstable Structure Detected

February 5, 2018, 3:30 pm
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I am currently modeling a 22 story steel building with braced frames. I keep getting the error "unstable structure detected. Instability found at rigid diaphragm defined at story XX and Diaphragm 1 for UX. Check the elements attached to this diaphragm or check PDelta effects." I checked the fixity of my braced frames and they are correct but I can not figure out the problem with my model. Attached is a picture of my floor plan if anyone has a suggestion.

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Simultaneous analysis of concrete structure and design of steel frame

February 5, 2018, 5:53 pm
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We are to replace the 5th, 6th, and roof with steel members which we want STAAD to select. How could I run it if I want these floors to be designed by STAAD and just analyze the reinforced concrete below. I tried assigning first the 5th, 6th, and roof to steel beams and columns, after which proceeded with the design of steel members. I ran the analysis and this was what it said "your model contains instructions for member selection or optimization and/or grouping. These are not followed by an instruction for re-analysis..." 

Attached below is the link of the file, this is the original, I haven't still replaced the 5th, 6th, and roof with steel here though. Could you check it out please? Would really be a big help. Thank you!


drive.google.com/.../view

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What commercial structural analysis software packages like etabs and staad pro have updated to conform to the new revised codes of IS 1838 2016 etc?

February 5, 2018, 9:53 pm
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What commercial structural analysis software packages like etabs and staad pro have updated to conform to the new revised codes of IS 1838 2016 etc?

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Design of Columns for Bi-axial bending in RCDC

February 5, 2018, 9:54 pm
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Dear Bentley Support Team,

I recently raised an issue related to Design error in the RCDC program. The program erroneously calculates the reinforcements for the columns under bi-axial bending and reports lower reinforcements than what is actually expected. Surprisingly, this is not common in all the columns with bi-axial bending. This does occur in few cases. After digging down deeper, it was evident that the RCDC program does really have difficulties in understanding the sign conventions. The effects of this error are much more drastic in the slender columns.

I raised this issue to bentley through our local supplier and explained them of this problem. Bentley never contacted me, but apparently sent a response to the supplier saying that this issue was addressed in the latest version, that is 06.03.01.02. Then I re-verified this issue with the latest available version, the problem still exists and I demonstrated the same to our supplier on his own system. After all the demonstration the supplier goes "actually bentley said they will be fixing it in the next version which is due for release in 2 weeks".

 This is a very blunt response and raises concerns on the credibility of the software.

A proper justification / response in this regards from the technical team is highly appreciated.

Best Regards,

   Likhin

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Hi, I have done FEM of L shape raft and provided sping support by assining foundation-plate mat, Direction - Y, Subgrage - 600000 kN/m2 & generate com. only/multi-linear spring-compression only. But my Raft is unsatble in Mz at 1 node. pl. help

February 6, 2018, 12:50 am
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Hi,

I have done FEM of L shape raft and provided sping support by assining foundation-plate mat, Direction - Y, Subgrage - 600000 kN/m2 & generate com. only/multi-linear spring-compression only. But my Raft is unsatble  in Mz at 1 node.

pl. help

Regards

Umesh Neware

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Export File

February 6, 2018, 7:19 am
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I would like to export a file from RAM element to RAM Structural, can I do that?

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QA/QC checklist for the review of a RAM model

February 6, 2018, 8:08 am
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Does anyone know where we can get a QA/QC checklist  for the review of a RAM model?

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How to fix "*** ERROR *** ABOVE LINE CONTAINS ERRONEOUS DATA." in STAAD file.

February 6, 2018, 4:24 pm
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Please help me resolve the error message I encounter.

 I have an error in my analysis program that reads " Error - Above line contains Erroneous Data. Data-Check Mode is Entered." What does this error mean, and how can it be resolved? 

Thank you!

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Load History Reactions

February 6, 2018, 6:14 pm
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We are designing a long span, post tensioned structure supported by four columns only. We have evaluated stiffness of the columns and modeled the supports as springs with appropriate stiffness. We require to determine horizontal reactions on the supports due to load term effects (creep & shrinkage).

What are the horizontal reactions when load history calculation is carried out?

We determined that horizontal shrinkage can not be determined.

We thought that the reactions are due to creep effects, however the reactions do not make any sense. Reactions for same load combination at 28 days and 30 years vary in direction, reaction on one support increases several times whilst at other column remains very similar. We have also run the same model without PT and the resulting reactions are much more consistent.

Any feedback would be greatly appreciated.

Regards, George 

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Change window resolution in RAM Concept V6 latest update

February 6, 2018, 6:25 pm
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Hi there, 

is there a way to change the screen resolution in the latest RAM Concept update back to the original pre recent update? It seems that the text and icons have increased in size. I have set-up shortcuts using auto hot-key and now these have all become obsolete as they are based on screen coordinates. 

Your help would be greatly appreciated. 

Regards

Lewis

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ISM: I am busy with a round-tripping process between ISM and Strand7. Would you please explain how the orientation axis t is derived?

February 6, 2018, 11:24 pm
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As I understand via section 11.3 of the ISM API 6.0, the R-axis is defined by the member location and would be the unit vector between the start and end nodes of the member. I do not see further information like this regarding the orientation axis t, but do see it under the orientation heading within the structural synchronizer of the ISM repository. Would you please explain how the orientation axis t is derived?

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manhole model

February 6, 2018, 11:34 pm
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Greeting

I want to create 28 meter depth Foul sewer manhole modeling  in staad using plate element ..

Internal diameter of manhole in 2.1 & Outer diameter is 2.7 meter

what is the diameter to be consider for staad modeling

is it 2.4 m or 2.1 or 2.7 (center to center of the wall or inernal dia or external dia)

pleas share if you have any supporting document or link for the center to center .consideration.

Thanks ..

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F S manhole modeling

February 6, 2018, 9:50 pm
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Greeting

I want to create 28 meter depth Foul sewer manhole modeling  in staad using plate element ..

Internal diameter of manhole in 2.1 & Outer diameter is 2.7 meter

what is the diameter to be consider for staad modeling

is it 2.4 m or 2.1 or 2.7 (center to center of the wall or inernal dia or external dia)

pleas share if you have any supporting document or link for the center to center ..consideration

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What is the difference in value for a base shear between the response spectrum and the time history, in Staad Pro?

February 7, 2018, 12:15 am
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What is the difference in value for a base shear between the response spectrum and the time history, in Staad Pro?

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Model crashes during steel "select commands" suggestions?

February 7, 2018, 5:53 am
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Hello,

I have a pretty large model I am working with, here's what happens;

  •  I ran it once without any design parameters: Runs fine w/ 0 Errors etc.
  • Ran it with parameters and profile, select and group commands: crashes when program gets to steel design
  • Removed profiles: crashes when program gets to steel design
  • Added profiles back and removed select and group commands: Runs fine w/ 0 Errors etc. 
  • Added back in group command: Runs fine w/ 0 Errors etc. 
  • Added back in select command and broke up the lines to reduce the memory required: crashes when program gets to steel design
  • Removed select command and went into GUI and added in select for a small number of members (40 or so): crashes when program gets to steel design

Any suggestions on how to fix this issue?

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STAAD 11.82 Bending capacity mistake with CSA S16-14

February 7, 2018, 6:06 am
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communities.bentley.com/.../6433.Helideck-Feb-2_2C00_-18-_2D00_-Return-old-Strut-_2D00_-NEWSTAAD.std

I recently upgraded to STAAD 20.07.11.82 from 11.50. As a check I copied a model run the day previous with 11.5 and ran it again with 11.82. The exact same model returned a number of additional fails.

Model details:

- Z Up

- Code Checked with CAN/CSA-S16-14

Comparing the URs revealed a number of IPE240 I-beams were failing in bending under the exact same loads that they were previously passing with. For a particular beam, the UR went from 0.46 to 1.47. Further examination revealed that the Design Strength MNZ and MNY had swapped under the steel design heading. It appears that STAAD is using the weak axis bending moment capacity for  strong axis bending and returning an incorrect code check. See the attached screenshots of the Steel Design tabs for the same beam run with both versions, as well as the Beam Design output sheets.

I've attached the .std file for the model as well.

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STAAD.Pro Results Along Line - Fx

February 7, 2018, 10:27 am
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I was checking the results from the "Results Along a Line" output using the plate center stresses and the plate areas.  I could match all the results except Fx.  I found a document the explained the Results Along a Line and found that Fx was calculated using Fx = sum(SLX*w*t)/L.  Can someone explain why "w" is used in this formula rather than the height of the plate element since SLX is a normal stress on the vertical face of the element/plate?  Document is attached.

communities.bentley.com/.../Results-Along-Line.pdf

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About the coefficient α in load contour method calculating biaxial bending of reinforced column

February 7, 2018, 5:35 pm
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In the help document of STAAD.PRO, I got this information:

Yet in STAAD FOUNDATION, the value of α is different from the above while calculating the pedestal of an isolated foundation:

I'm confused why the two values of α are not taken the same. And in which code can I find this value?

Any response is appreciated. Thanks!

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Member Offset

February 7, 2018, 8:50 pm
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This is bending moment using member offset in staad

This is bending moment by adding notes in staad

This is shear using member offset in staad

This is shear by adding notes in staad

We are modelling a truss structure as shown in the above sketches. There will be some offset in the diagonal and the top and bottom chord members, that mean the center line do not match each others. Please refer to the above sketches. We tried to model the offset using the member offset command and another model by adding notes on the top and bottom chords to consider the offset.

The checker commented that the results (both bending and shear) for the model using member offset command is not correct as there should be high shear and bending due to the point load effect causing by the offset diagonal members.

We would like to seek your explanation and advise on the staad member offset function, particularly on this example. Whether the results are correct? And what would be the best approach to consider the offset on this example?

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